ACCESSORIES FOR MEDIUM VOLTAGE DISTRIBUTION NETWORKS · PDF fileACCESSORIES FOR MEDIUM VOLTAGE DISTRIBUTION NETWORKS Ensto Overhead. ... electricity networks with a low failure ...

ACCESSORIES FOR MEDIUM VOLTAGEDISTRIBUTION NETWORKSEnsto Overhead

Content

Ensto in short 4

Ensto Solutions for Various Medium Voltage Systems 5Covered Conductor System 5Introduction 5Reliability 5Line Corridors 5

Covered Conductor Systems 6Costs 6Design 6Arc Protection 6

Ensto Covered Conductor Solutions 8Arc Protection Device 8Installing Arc Protection Devices 10Power Arc Device 13Installing Power Arc Devices 13Current Limiting Devices 17Surge Arrester 18Radio Interference 18Protection from Birds 18Installing Connectors 19Tensioning of the Conductors 19Tying Conductors 19Temporary Earthing 19

Accessories for Covered Conductors 21

36 kV Covered Conductor Solution 29

Ensto Solutions for Universal Cables, 12-36 kV 33

Ensto Accessories for Bare Conductors 37

Green Line Installation 41

Ensto Crossarms and Pole Accessories for Medium Voltage Systems 44

Tools 45

Notes 49

Product Index 50

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Ensto is an international industrial group founded in 1958, specializing in the de-velopment, manufacturing and marketing of electrical systems and accessories. Today Ensto has opera-tions in 17 countries, export to over 80 countries and more than 1300 employees. Ensto´s products play a significant role in the con-struction and maintenance of power electricity net-works. The products can be found in electrical installa-tions, lighting solutions and various high-tech control and monitoring systems in homes, as well as in public and business premises.

Close co-operation with customers, direct infor-mation links and ready availability of high quality products are the key ele-ments of Ensto´s customer service.

Ensto Utility NetworksEnsto Utility Networks, one of the three business units of Ensto Group, is one of the biggest international groups of companies in Europe developing, manufacturing and marketing network construction accessories and offering solutions for the transmission and distribution of electricity. The main product lines are Overhead Line Materials and Un-derground Cable Materials. We have sales offices in Scandinavia, Central Europe, Baltic countries and Russia.

ProductionEnsto Utility Networks offers acces-sories and solutions for:• 0.� kV Overhead Lines focused on

Aerial Bundled Cable Systems• Medium Voltage Lines (for bare

and covered conductor lines)• Underground Cable Lines (our

underground cable product family covers low and medium voltage accessories)

We have production plants in Fin-land, Estonia and Poland.

Ensto reliability is based on• Strong product development in co-

operation with our customers• Products, which are easy to install,

safe, reliable and cost effective• Professional customer training

and technical support• Continuous laboratory testing in

various climatic conditions for electrical and mechanical proper-ties

• Products, which meet various international standards such as IEC and EN and national standards VDE/DIN, etc.

Certified QualityEnsto Utility Networks factories have received ISO 9001 and ISO 1�001 Environmental Management System Certification. Our high quality pro-ducts make it possible to construct electricity networks with a low failure frequency.

Ensto in short

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Ensto has developed inte-grated product packages and solutions for various overhead lines from Bare Wires to Covered Conduc-tors (CC) and Universal Cables. These packages are designed to meet local conditions and require-ments. All accessories have been developed and tested in close collabora-tion with electricity power companies. This catalogue starts by introducing the CC System and thereafter Ensto product packages for both Bare and Universal Cable Systems.

CC System Plastic covered overhead conductors without metal sheaths, PAS and BLX conductors, were developed in order to improve the reliability of the distri-bution and transfer of electricity.

IntroductionThe CC system has diminished the number of interruptions caused by faults. It has also helped to make line corridors narrow, a particular advantage in built-up areas. Using overhead line structures, it is pos-sible to fit substation outputs into a small space, an excellent solution in aesthetic terms.

Several years in use have proven the CC system to be extremely functional and reliable. In Finland there are currently more than 8,500 kilometres of covered conductors, their share of new medium voltage network construction totalling around 80%. Sweden has more than 9,500 kilometres of BLX conductors, their share of new medium voltage network construction as high as 80%. Cur-rently, the CC system is in commonly use in several European countries, including Norway, England, the Baltic countries, Poland, the Czech Repub-lic, Slovenia and Germany and is also approved in several other countries.

With the CC system now estab-lished, Ensto is continuing its devel-opment, with accessories that make installation easy, quick and reliable. These are based on reliable and economical construction solutions, were developed in collaboration with network constructors and satisfy all Nordic regulations.

ReliabilityThe plastic covering for covered conductors prevents interruptions, or outages, due to collisions or

momentary contact with a foreign object. Due to its coating, faults caused by snow and ice falling from trees have been almost completely eliminated. According to statistics, the failure rate has diminished from �.5 faults/100 km per annum for bare conductors, to 0.9 faults/100 km per annum for covered conductors.

Thus, several network companies have secured an interruption-free electricity supply for their key cus-tomers by choosing the CC structure for their medium voltage lines.

Line CorridorsThe space requirement for a CC line is approximately �0% less than that of a standard bare line. This has enabled overhead line installations in built-up areas, while in forests, the required line corridor has narrowed to � metres trunk-to-trunk, so it is now possible to leave tree stands on roadsides as visual and noise barriers.

CC structures offer considerable space savings, especially in substa-tion outputs, a desirable outcome in terms of preserving natural scenery. Considerable space savings can also be made in parallel line structures.

Ensto Solutions for VariousMedium Voltage Systems

normal bare conductor

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CostsCovered Conductor (CC) line construction costs are moderate, considering their advantages over traditional bare line structures. When constructing parallel lines, bare and CC lines cost the same.

DesignCompared to traditional bare con-ductor construction, some additional requirements have been set for covered conductors. The most important requirements include:• Conductors must be handled with

care• Only accessories designed and

approved for the conductor may be used

• Arc protection devices must be used on lines vulnerable to over-voltages

• Substations must have tripping earth-fault protection devices and alarming secondary devices

Arc ProtectionOvervoltage is induced on the line when lightning strikes an overhead line or its vicinity. The magnitude of the overvoltage is approximately the same in all phases and may rise to several hundred kilovolts between the phase and earth.

Overvoltage travels along the line to the nearest pole where it discharges by igniting an arc between the cros-sarm and conductors. After the overvoltage has discharged a power frequency short-circuit current – the magnitude of which depends on the short-circuit power of the network and distance to the substa-tion – starts to flow through ionized air resulting a power arc between the phases. Power arc magnitude is normally several kilo amperes.

Power arc can move freely along an ordinary bare conductor line towards the load, but in the covered conductor line the covering forms an obstacle. When an arc ignites, it burns a small hole in the covering and keeps burning until the conduc-tor is damaged or burned through.

Circuit breakers cannot respond quickly enough. In order to prevent damage a covered conductor must be protected by installing arc pro-tection devices at the appropriate locations. These offer the power arc a safe discharge route without dam-aging the conductor.

An arc protection device is used to protect the conductors as well as other network components. In this way, it is possible to achieve disrup-tion-free distribution of electricity, a major benefit to the consumer. Arc protection devices must be installed in places in which overvoltage is likely to occur, e.g. fields and hills. Furthermore, protection is required in frequented areas; for example, buildings, yards, their immediate vi-cinity, traffic routes and sports fields.

Covered Conductor Systems

The cost of a pole transformer with the PAS structure is approximately one third cheaper than a park transformer required for an underground cable network.

Relative costs:

Structure Conductor Cost of complete lineBare line 5�/9 AlFe RAVEN 1.0

CC line PAS 3x70 1.3

Aerial cable SAXKA 3x70 2.5

Underground cable AHXMKW 3x70 3.0

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Arc protection can be accom-plished using the following methods:• Arc protection device (APD)• Power arc device (PAD)• Surge arrester• Current limiting device

The protection chosen also de-pends on the network’s short-circuit values. The adjoining table displays the selected phase spacing of the covered conductors, the value of the short-circuit current with a protected object, and the recommended arc protection devices.

Crossarm type Short-circuit current Protection methods (kA)

Phase spacing approx. 1.0 Power arc device,�0-60 cm surge arrester, current limiting devicePhase spacing 2.0 - 3.0 Arc protection device�0-60 cm with double wire, power arc device, surge arrester, current limiting devicePhase spacing › 3.0 Arc protection device,�0-60 cm power arc device, surge arrester, current limiting devicePhase spacing Power arc device, surge over 60 cm arrester, current limiting device

Covered conductor arc protection methods

Arc protection device Power arc device Surge arrester Current limiting (APD) (PAD) device

Protection of Efficient Efficient Efficient Efficientthe conductorProtection of No protection Small spark gap Protects transformers Protects small other line protects small and cables transformerscomponents transformersQuality of High-speed High-speed No interruption No interruptionpower supply autoreclosure autoreclosureUncovered Bird protection Bird protection Bird protection Bird protectioncomponents needed needed needed neededof the lineRadio No RIV No RIV No RIV No RIVinterferenceDevice Withstands 2-3 Withstands 2-3 May be damaged by May be damaged byendurance operations at operations at high lightning high lightning 10 kA/1 sec. 10 kA/1 sec. current/energy current/energyPrice Economical Economical High Reasonable

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Arc Protection Device (APD)

Arc protection devices are designed to direct the arc generated to a sufficient distance from the conduc-tor and insulator. An arc protection device implemented with an arcing horn is recommended for pin and line post insulators. We also recom-mend power arc devices (PAD) for branching and tension insulators (see p. 1�).

While it is burning, the arc will not damage the conductor itself, but ignite over the insulator (1), after which it will move along the Al wire twisted onto the insulator’s neck to the arcing horn (2). While burning at the end of the horn, the arc ionises the air, making it conductive (3) and creates a short circuit between the phases (�), at which point the circuit breakers are tripped. The distance between the horns must be no greater than the CC phase spacing for covered conductor. Installation is performed through the insulation, avoiding the need to strip the con-ductor. The installation of a connec-tor will not damage the mechanical strength of the conductor; this has been proven in several tension and vibration tests.

Arc protection devices can also easily be installed afterwards if fault sta-tistics so require. In network, an arc protection device should be installed on the side of the load, and in a ring network on both sides of the insula-tor. Arc protection devices have also been approved as mounting points for screw-on temporary earth tools and can be used with pin, tension, and suspension insulators. For small short circuit currents, arc protection connectors with double wire must be used. In such cases, two 25 mm2 Al binding wires are installed in the same way as a single wire.

Ensto Covered Conductor Solutions

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Installing ConnectorsBefore beginning installation, you should carefully read the installa-tion instructions, which explain the installation methods in detail.

When installing the arc protection connectors SE 20.1, SE 20.2 or SE 20.3, connectors SE 21.1, SE 21.2 or SE 21.3, there is no need to remove the conductor cover-ing (see figure). The connector is equipped with an insulation piercing feature, whose grease must not be removed, since this will contribute towards ease of installation and protect the installation section from dirt, dust and corrosion.

Install the connector carefully and according to the installation instruc-tions, tightening it to nominal torque of �0 Nm with a torque wrench. Extreme care must be taken when installing in subzero conditions. Arc protection connectors must not be reused. For phase spacing over 60 cm and with low short-circuit cur-rents, arc protection devices do not adequately protect the conductor and you must therefore choose another method of protection, e.g. a power arc device.

Arc Protection Device for a Branch PoleOn a branching pole we recom-mend the use of power arc devices with tension insulators (see p. 15). However, in exceptional cases, arc protection devices can be used.

Radially operated covered main line should be branched by installing branching connectors on the load side of the crossarm between the arc protection devices and the crossarm (see figure).

Ring operated covered or bare main lines should be branched by install-ing branching connectors on the load side of the crossarm between the arc protection devices and the crossarm (see figure). If covered main line may be fed also from branch line, the connecting wires (down leads) must be bare. Exceptions to this are pole struc-tures, in which SDI90-series tension insulators equipped with arching horns SDI10.2 or surge arresters or current limiting devices are used. In such cases connecting wires may be covered conductors.

DIRECTION OF POWER

MAIN LINE

DIRECTION OF POWER

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Installing Arc Protection DevicesHorizontal crossarm, radial network, one line on pole

In a radial network, the arc protec-tion connectors must be installed on the side of the load with the horn facing down. The Al wire used to bind the conductor must have a cross-section of 25 mm2, and the end of the wire closest to the connector must be installed in the connector. If pre-formed helical ties are used, the arc protection devices must be connected with a separate 25 mm2 Al wire to the insulator neck so that it is wound twice around the conductor and twice around the insulator neck.

Vertical crossarm, radial net-work, on line

In a radial network, the arc protec-tion connectors must be installed on the side of the load with the horn facing out. The Al wire used to bind the conductor must have a cross-section of 25 mm2, and the end of the wire closest to the connector must be installed in the connector. If pre-formed helical ties are used, the arc protection devices must be connected with a separate 25 mm2 Al wire to the insulator neck so that it is wound twice around the conductor and twice around the insulator neck.


DIRECTION OF POWER

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Horizontal crossarm, ring net-work, one lineIn a ring network, the arc protection connectors must be installed on both sides of the insulator with the horn facing down. The Al wire used to bind the conductor must have a cross-section of 25 mm2, and the ends of the wire closest to the connectors must be installed in the connectors. If pre-formed helical ties are used, the arc protection devices must be connected to the insulator neck with a separate 25 mm2 Al wire.

The wire must be wound twice around the insulator neck and at least twice around the conductor, after which the ends of the Al wire should be installed in the connec-tors.

Vertical crossarm, ring net-work, one lineIn a ring network, the arc protection connectors must be installed on both sides of the insulator with the horn facing out. The Al wire used to bind the conductor must have a cross-section of 25 mm2, and the ends of the wire closest to the connectors must be installed in the connectors. If pre-formed helical ties are used, the arc protection devices must be connected to the insulator neck with a separate 25 mm2 Al wire.

The wire is wound twice around the insulator neck and at least twice around the conductor, after which the ends of the Al wire are installed in the connectors.

Horizontal crossarm, radial network, double lineIn a radial network, the arc protec-tion connectors must be installed on the side of the load with the horn facing out. The Al wire used to bind the conductor must have a cross-section of 25 mm2, and the end of the wire closest to the connector must be installed in the connector. If pre-formed helical ties are used, the arc protection devices must be connected to the insulator neck with a separate 25 mm2 Al wire wound twice around the conductor and twice around the insulator neck.

The crossarms must be con-nected to each other with a minimum 50 mm2 Cu conductor.

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Vertical crossarm, radial net-work, double line

In a radial network, the arc protec-tion connectors must be installed on the side of the load with the horn facing out. The Al wire used to bind the conductor must have a cross-section of 25 mm2, and the end of the wire closest to the connector must be installed in the connector. If pre-formed helical ties are used, the arc protection devices must be con-nected to the insulator neck with a separate 25 mm2 Al wire so that it is wound twice around the conductor and twice around the insulator neck.

Horizontal crossarm, ring net-work, double line

In a ring network, the arc protection connectors must be installed on both sides of the insulator with the horn facing out. The Al wire used to bind the conductor must have a cross-sec-tion of 25 mm2, and the ends of the wire closest to the connectors must be installed in the connectors. If pre-formed helical ties are used, the arc protection devices must be connected to the insulator neck with a separate 25 mm2 Al wire.


The crossarms must be connected to each other with a 50 mm2 minimum Cu conductor.

Vertical crossarm, ring net-work, double line

In a ring network, the arc protection connectors must be installed on both sides of the insulator with the horn facing out. The Al wire used to bind the conductor must have a cross-section of 25 mm2, and the ends of the wire closest to the connectors must be installed in the connectors. If pre-formed helical ties are used, the arc protection devices must be connected to the insulator neck with a separate 25 mm2 Al wire.


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Power Arc Devices

With small short-circuit currents, an arc will move slowly and stress the insulator for a prolonged period. To avoid damage to the insulator, the arc must be ignited directly in the spark gap (1), so that the short circuit occurs through the crossarm (2) and trips the circuit breakers. The spark gap can also withstand the stresses of high short-circuit currents (Ik = 10 kA/1 sec). Power arc devices are not dependent on the direction of power feed and therefore can be installed on either side of the insula-tor. Power arc devices can also be in-stalled on different sides of the pole. Power arc devices can be used with tension and suspension insulators.

Installing Power Arc Devices

Tension InsulatorsThe best method of implementing power arc protection with tension insulators is to use the SDI 90.X equipped with the set SDI 27.1 or SDI 10.2 power arc device. Power arc devices are not dependent on the direction of power feed, and can be installed on either side of the cross-arm. Power arc devices for different phases can be installed on different sides of the crossarm. The spark gap L should be adjusted to 130...150 mm on 2� kV.


1�

Horizontal CrossarmsA spark gap is formed using the complete set SDI 20.3 or SDI 21.3, containing an arc protection connec-tor and a mounting iron for the cross-arm pin, equipped with an arcing horn. Three SDI 20.3 or SDI 21.3 series are required per crossarm. The spark gap may be located on either side of the insulator; the effec-tiveness of the protection not being dependent on the direction of the power feed. The spark gap should be set to 130-150 mm on 2� kV.

Crossarm for Line Angle with specially for Covered Con-ductors designed Suspension Clamp with pulling wheel and Arcing Horns in Tension Insu-lator.The best method on crossarms is to use the suspension clamp with pull-ing wheel SO 181.5, accessory kit SDI 27.1 (see p. 23) and tension in-sulator SDI 90.X. These accessories provide the best conductor protec-tion and eliminate radio interference. The covered conductor need not be stripped.

The normal suspension clamp (SO 181) is not recommended for CC installations.

Angle with Tension InsulatorsWhen constructing an angle with tension insulators installed in vertical line formation, arcing horns SDI 27.1 must be used for tension insulator SDI 90.X. The bolts must always be connected behind the pole with a vertical iron, e.g. PEK 68, or a conductor (min. Cu 50 mm2). This prevents short-circuiting through the pole. Otherwise, the same structures should be used as for crossarms for line angle.

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Terminal Crossarm with Spark GapFor the termination or tension of a convered conductor the best method is to use tension clamp SO 235 or SO 236 and tension insulator SDI 90.X equipped with arcing horns SDI 27.1. You may also use the SDI 10.2 and SO 85.

Branch lines should be connected using the insulation piercing connec-tor SL 25.2 and SP 16 without other protection. The covered conductor needs not be stripped.

Main Line Bare Conductor / Branch Line CCThe best and easiest way to imple-ment arc protection at a branch pole is to install the SDI 27.1 spark gap set with tension clamp SO 235 or SO 236, so that the conductor does not need to be stripped. It is also possible to use the SDI 10.2 and SO 85. When using a spark gap on the tension insulators of the branch conductor, the connecting conductors can be bare or covered.

Main Line CC / Branch Line CC or Bare ConductorThe main line shall be equipped with spark gaps.

The connectors may be positioned freely, and the connecting conduc-tors may be either covered or bare.

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Current Limiting Devices

To protect a conductor, it is more economical to use a current limiting device than only a surge arrester. The advantage is based on selecting a smaller surge arrester. Under nor-mal operating conditions the smaller surge arrester is not stressed at line voltage, as its other end is in the air. This protection method also provides consumers with an uninterrupted electricity supply, because the arc protection does not cause high-speed auto-recloser operations. A surge arrester should be installed in the crossarm in the same way as an arcing horn.

Installation can be performed on either side of the crossarm regard-less of the direction of power supply. The crossarm must always be earthed. The protection device instal-lation density depends on the span length, the height of conductors from the ground, the position of any trees and the relief of the terrain.

Installing Current Limiting DevicesAn advantage of current limiting pro-tection is uninterrupted distribution of electricity to consumers. Activa-tion of this protection does not cause any high-speed automatic reclosing in substation protection devices. A lightning discharge to a covered con-ductor is directed via a metal oxide protection device and spark gap past the insulator, but supply voltage can no longer pass through the protec-tion device. The device ignites at a lower level than the flashover level of the insulator, and the discharge passes through the protection. Birds, other animals or branches straying onto the device do not activate the protection. The crossarm must be earthed. For installation, the

SDI �6.7 series is used, in which the protection device is installed in the crossarm pin and the arcing horn in the conductor. The surge arrester is installed onto the crossarm with an adjustable mounting bracket. The spark gap is adjusted to the required value: 80 mm. The arcing horn is equipped with an insulation piercing connector. Three sets per crossarm are required.


Place for earthing the crossarm

Adjustable support

Spark gap = 80 ± 10 mm

Arcing horns

Connector and housing

surge arrester

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Surge Arrester

In addition to the conductor, a surge arrester also protects other network components, no arc being generated. In action, the arrester does not cause any noticeable electricity supply disruption but significantly increases the network’s construction costs. Usually, it is used only with pole transformers and terminal poles on underground cables, in which case no other protection method is re-quired for protecting the conductor.

Radio Interference

Radio interference refers to partial discharges that may cause interfer-ence in electronic devices. With cov-ered conductors, the main sources of radio interference are the following:

1. Crossarms for line angle, when an ordinary overhead line suspen-sion clamp is used. No interference occurs when using the radio interfer-ence-tested suspension clamp SO 181.5 with pulling wheel or SO 2�1 + SDP �.1.

2. Crossarms for line angle, when an ordinary pulling wheel suspension clamp (SO 181) is used. No interfer-ence occurs when using the radio interference-tested SO 181.5 sus-pension clamp with pulling wheel.

3. Radio interference may also be generated in the oxidized cups and pins of glass insulators. This problem can be avoided by using composite insulator.

Protection from Birds

Covered conductors are not as vulnerable to damage and disruption caused by birds or branches as tra-ditional, bare conductors. However, smaller phase distance of covered conductors increases the risk of such short circuits on cross arms. This risk can be diminished with e.g. twig protector, preventing branches from sliding along the covering, and bird protection that - when installed onto live parts - prevents birds and branches from touching live parts. Insulators can also be protected with SP �5.3 bird protection sets.

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Installing Connectors

For covered conductors, the insula-tion piercing connectors SL 25.2 and arc protection connectors SE 20, SE 20.1, SE 20.2 or SE 20.3 as well as corresponding SE21 series are recommended. If the conductor is stripped, it is possible to use SL �.25 or SL 8.21 connectors, which can be protected by using plastic insulation covers SP 15 or SP 16.

When installing connectors, the main rule is that the branch con-nector should always be located between the arc protection connec-tor and crossarm. For this reason, the arc protection connectors must be installed at an adequate distance from the crossarm so that the con-nection can be made properly. Bare or covered conductors can be used as branch and down leads.

Tensioning of the Conductors

Conductors are tensioned by evenly tensioning each conductor. The sag and tension tables and recommen-dations of conductor manufacturer should be utilized.

Tying Conductors

Conductors can be tied to the top or neck of an insulator with preformed spirals or with aluminium wire. When using pre-tensioned helical ties, e.g. CO 35, CO 70, CO 120, SO115 series or SO 216 series, two spirals are installed for each conductors. Only 25 mm² wire may be used for connecting arc protection connectors to insulator neck. 16 mm² is not suit-able for arc protection.

Temporary Earthing

Temporary earthing must be per-formed in the same way as for bare overhead lines, i.e. a covered con-ductor has to have points of attach-ment for temporary earth equipment at adequate intervals. These tempo-rary earth points must be located so close to a pole that temporary earth-ing can easily be made from the pole. Temporary earthing can be made with the arc protection connector SE 20.1 alternatively SE 21.1 or temporary earth connec-tor SE 20.3 alternatively SE 21.3, which also acts as an arc protection device. Approved screw-on tempo-rary earth equipment, e.g. CT 86.5 (5 kA) or CT 86.8 (8 kA) must be used for temporary earthing.

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Pin insulator SDI 37These ceramic pin insulators are used with 2� kV bare or covered conductors. The insulator incor-porates a split plastic cylinder in the top groove which allows the conductor to be dropped into the groove and retained by the plastic cylinder which enables the conductor to be pulled along the line without the use of pulleys. This arrangement saves time and erection costs. After line tensioning the conductor may be bound to the top groove or to the neck of the insulator with straight lines and to the neck with angle lines.Creepage distance 325 mm. Neck diameter 85 mm. The insulator is tested and certified to IEC 60383 by SGS-FIMKO in Finland.

TYPE EAN HIGHEST PER- BREAKING PIN WEIGHT PACKAGE MITTED OPER- LOAD MIN g pcs ATING VOLTAGE kV kNSDI 37 6� 18677 �0873 1 2� 12.5 SOT 2� 3500 3

Accessories for Covered Conductors

Pin insulator SDI 30The insulator SDI 30 is a conventional type 2� kV ceramic pin insulator according to the SFS 500� standard. Suitable for installation on pin SOT 2�. The conductor can be tied to the top groove or to the neck.Creepage distance 325 mm. Neck diameter 85 mm. The insulator is tested and certified to IEC 60383 by SGS-FIMKO in Finland.

TYPE EAN HIGHEST PER- BREAKING PIN WEIGHT PACKAGE MITTED OPER- LOAD MIN g pcs ATING VOLTAGE kV kNSDI 30 6� 18677 �087� 8 2� 12.5 SOT 2� 2900 3

Stay insulator SDI 4.5These nominal 2� kV ceramic insulators are suitable for installation in stay wires up to 52 mm2. Conforms with Standard SFS 37�1. Creepage distance is 95 mm.

TYPE EAN HIGHEST PER- TENSILE WEIGHT PACKAGE MITTED OPER- BREAKING g pcs ATING VOLTAGE kV LOAD kNSDI �.5 6� 18677 �1855 6 2� › 120 2800 10

Composite stay insulators SDI 70.24SDI 70.2� insulator has high mechanical and electrical capacity combined with light weight.The insulating section is made of glass fibre impregnated with UV stabilized resin and twice cov-ered with silicon rubber. The end thimble is made of aluminium and dimensioned for minimum 52 mm eyelet. Suitable for installation on stay wires up to Fe 52. Tested according to IEC 60383. Ordinary mechanical load �8 kN, max. mechanical load 1�� kN, specified mechanical load 180 kN.Creepage distance 160 mm.

TYPE EAN HIGHEST PER- HIGHEST TENSILE WEIGHT PACKAGE MITTED OPER- PERMITTED BREAKING g pcs ATING VOLTAGE kV LOAD IN LOAD kN USE kNSDI 70.2� 6� 18677 �0178 7 2� 35 › 180 800 15

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Composite insulators SDI 90 seriesSDI 90 composite insulators are the next step on Ensto’s composite insulator series. Tension insulators are even lighter than the previous SDI 80 series but still very strong and durable in every day use. SDI 90 insulators fullfill the requirements of IEC 61109. The sheds of the insulators are made of highly hydrophobic silicon rubber. The core is made of corrosion resistant fiber glass rod and the end fittings are made of hot-dip galvanized steel. Tension insulators SDI 90.15x are meant to be used on 10 kV up to 2� kV depending on pollution class requirements. SDI 90.28x are meant to be used on 2� kV up to 36 kV.Creepage distance of SDI 90.15x is 391 mm and creepage distance of SDI 90.28x is 613 mm.

TYPE EAN NOMINAL END WEIGHT PACKAGE VOLTAGE FITTINGS g pcs kVSDI 90.150 6� 18677 �2266 9 10…2� eye / eye 950 3SDI 90.15� 6� 18677 �2270 6 10…2� clevis / tongue 1200 3SDI 90.280 6� 18677 �2276 8 2�…36 eye / eye 1100 3SDI 90.282 6� 18677 �2278 2 2�…36 socket / eye 1300 3SDI 90.283 6� 18677 �2279 9 2�…36 ball / socket 1100 3SDI 90.28� 6� 18677 �2280 5 2�…36 clevis / tongue 1300 3SDI 90.285 6� 18677 �2281 2 2�…36 clevis / ball 1200 3SDI 90.288 6� 18677 �228� 3 2�…36 socket / tongue 1300 3

Power arc device SDI 27.1Power arc device SDI 27.1 is used with SDI90.x composite insulators on angle poles with suspension clamp SO 181.5 and on tension poles with tension clamps SO 235 or SO 236. The package includes arching horns and a 95 mm² conductor with cable lugs. Spark gap is adjusted to 130-150 mm on 2�-36 kV.

TYPE EAN WEIGHT PACKAGE g pcsSDI 27.1 6� 18677 �1913 3 1�00 9

Power arc device SDI 10.2Used as arc protection with tension insulators SDI 90 on covered conductors. SDI 10.2 includes two horns, which are fixed to the metal parts of the tension insulator so that the points are towards each other and the distance between the points is 100-150 mm for 2� kV.

TYPE EAN WEIGHT PACKAGE g pcsSDI 10.2 6� 18677 �1067 3 910 15

Power arc devices SDI 20.3 and SDI 20.2Used on straight line cross arms for making spark gap protection. The set includes one arc protection device SE 20.1 and one arc horn. The spark gap is adjustable. SDI 20.2 is for line-post insulator and SDI 20.3 is for pin insulators.

TYPE EAN CROSSARM WEIGHT PACKAGE g pcsSDI 20.3 6� 18677 �0153 � horizontal 1600 9SDI 20.31 6� 18677 �1856 3 vertical 1600 9SDI 20.2 6� 18677 �1860 0 horizontal 1250 12

49.7

14

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Power arc device SDI 25Arc protection device for covered conductors with pin insulators. The spark gap is adjustable.

TYPE EAN WEIGHT PACKAGE g pcsSDI 25 6� 18677 �015� 1 1600 3

Current limiting arc horn SDI 46 seriesUsed on straight line cross arms for making the protection. The set includes a surge arrester, a fixing bracket, an insulation piercing connector, an arc protection horn and a connector cover.

TYPE EAN WEIGHT SPARK LINE INSULA- PACKAGE g GAP mm kV TION pcsSDI �6.7 6� 18677 �0162 6 3000 80 2� PIN 3SDI �6.710 6� 18677 �1910 2 2300 �6 12 PIN 3SDI �6.5 6� 18677 �1863 1 3860 80 2� line-post 3SDI �6.510 6� 18677 �1865 5 3160 �6 12 line-post 3

Spark gap horn PSS 715Used for arc protection on CC lines. The arc horn is fixed to the insulator pin so that the horn points towards the arc protection horn. The spark gap is adjusted to 100-150 mm on 2� kV. On a wooden crossarm, the pins must be connected with min. 50 mm² Cu-wire. PSS 715 is for horizontal crossarm, PSS 715.1 is for vertical crossarm.

TYPE EAN CROSSARM WEIGHT PACKAGE g pcsPSS 715 6� 18677 �0131 2 horizontal 1135 12PSS 715.1 6� 18677 �1857 0 vertical 1135 12

Suspension clamp SO 181.5SO 181.5 is suitable for covered conductors.This suspension clamp also functions as an installation pulley thereby completely eliminating the need for separate pulleys. Conductor joints with diameter under 30 mm can be pulled through the suspension clamp.SO 181.5 has an insulation piercing clamping piece. The clamping piece is connected to the body with a wire for balancing the potential. Tested for radio interference. The clamp body is made of hot-dip galvanised steel plate. The rollers are made of corrosion resistant aluminium alloy, other steel parts are hot dip galvanised. Suspension bolt 16 mm. Breaking strength 36 kN.

TYPE EAN COVERED TIGHTENING WEIGHT PACKAGE CONDUCTORS mm2 TORQUE Nm g pcsSO 181.5 6� 18677 �0��9 8 35-150 �0 1000 3

Tension clamp SO 85For dead-ending bare and covered conductors. The covered conductor has to be peeled before installing the tension clamp. The body is made of corrosion resistant aluminium alloy and the bolts are hot-dip galvanised steel. The conductor is inserted on one side and clamped by two bolts. Breaking strength 35 kN. Suspension bolt 16 mm.SO 85.2 with 19 mm suspension bolt.

TYPE EAN COVERED TIGHTENING WEIGHT PACKAGE CONDUCTORS mm2 TORQUE Nm g pcsSO 85 6� 18677 �0511 2 35-150 55 700 25

2�

Waterproof tension clamps SO 235 and SO 236For dead-ending covered conductors. The clamp is very easy to install compared with the other clamps on the market as there is no need to peel the conductor. The insulation piercing part of the clamp keeps the parts of the clamp at the same potential and prevents partial discharges and radio disturbances. The insulation piercing part also makes it possible to add an arc protection device to the clamp. Tested according to ESI �3-1� and SFS 2663.

TYPE EAN COVERED TIGHTENING WEIGHT PACKAGE CONDUCTORS mm2 TORQUE Nm g pcsSO 235 6� 18677 �1629 3 35-70 �0 1000 9SO 236 6� 18677 �1951 5 95-157 �� 2�50 3

Tension clamp SO 105For dead-ending bare and covered conductors. The covered conductor has to be peeled before installing the tension clamp. The body is made of corrosion resistant aluminium alloy and the bolts are hot-dip galvanised steel. The conductor is in-serted on one side and clamped by four bolts. Breaking strength 50 kN. Suspension bolt 16 mm.

TYPE EAN COVERED TIGHTENING WEIGHT PACKAGE CONDUCTORS TORQUE Nm g pcs mm2

SO 105 6� 18677 �0�03 0 95-2�1 �� 1�00 10

Tension clamp SO 146For dead-ending bare or covered conductors. The covered conductor has to be peeled before installing the tension clamp. The body is made of corrosion resistant aluminium alloy. Bolts are hot-dip galvanised steel. The conductor is inserted on one side and clamped by two bolts. Breaking strength 35 kN. Suspension bolt 16 mm.

TYPE EAN COVERED TIGHTENING WEIGHT PACKAGE CONDUCTORS TORQUE Nm g pcs mm2

SO 1�6 6� 18677 �0��3 6 35-150 55 800 25

Helical tie sets CO and SOUsed with covered conductors for tying the conductors to the pin insulators SDI 30 and SDI 37. Can be used as both top and side ties. Easy to install without tools. The tie is installed on the insulation of the covered conductor. The sets include 6 pcs ties (one set / cross arm). The right size is easy to recognise by the color code.

TYPE EAN COVERED INSULATOR COLOR WEIGHT PACKAGE CONDUCTORS mm2 NECK mm CODE g pcsCO 35 6� 18667 �0916 5 35-50 85 yellow 550 1CO 70 6� 18677 �0917 2 70-95 85 green 650 1CO 120 6� 18677 �0913 � 120-150 85 black 710 1SO 115.5073 6� 18677 �0�08 5 35-50-62 73 yellow 530 1SO 115.9573 6� 18677 �0�10 8 70-95-99 73 green 570 1SO 115.5085 6� 18677 �0�09 2 35-50-62 85 red 520 1SO 115.9585 6� 18677 �0�11 5 70-95-99 85 blue 570 1SO 115.150 6� 18677 �1�32 9 120-150-157 73-85 white 630 1SO 216.62 6� 18677 �0�56 6 62 85 white 520 1SO 216.99 6� 18677 �0�57 3 99 85 red 610 1SO 216.157 6� 18677 �0�5� 2 157 85 blue 660 1SO 216.2�1 6� 18677 �0�55 9 2�1 85 yellow 1710 1

Insulation piercing connectors SE 20 and SE 21Used as branching connectors from covered to bare conductors. For aluminium to aluminium connections where no mechanical tension is involved. The body is made of corrosion resistant aluminium alloy, and the bolts are hot-dip galvanised steel. The paral-lel conductor groove side with teeth is brushed and prepared with joint compound.

TYPE EAN COVERED TIGHTENING WEIGHT PACKAGE CONDUCTORS mm2 TORQUE Nm g pcsSE 20 6� 18677 �0186 2 35-157 �0 270 2�SE 21 6� 18677 �0888 5 185-2�1 �0 280 2�

25

Arc protection devices SE 20.1 and SE 21.1Used with covered conductors for arc protection. There is no need to peel the covered conductor. The connectors include an arc protection horn suitable also for use with temporary earthing devices with a screw fixing. The connector has a place for installing the Al-thread, which must be connected to the neck of the insulator.

TYPE EAN COVERED TIGHTENING WEIGHT PACKAGE CONDUCTORS mm2 TORQUE Nm g pcsSE 20.1 6� 18677 �0187 9 35-157 �0 �70 2�SE 21.1 6� 18677 �1�31 2 185-2�1 �0 �70 2�

Arc protection devices SE 20.2 and SE 21.2Used with covered conductors for arc protection. There is no need to peel the covered conductor. The connectors include an arc protection horn suitable also for use with temporary earthing devices with a screw fixing. The connector has a place for installing the Al-thread 25 mm², which must be connected to the neck of the insulator. Length of the thread is 2.1 m.

TYPE EAN COVERED TIGHTENING WEIGHT PACKAGE CONDUCTORS mm2 TORQUE Nm g pcsSE 20.2 6� 18677 �0189 3 35-157 �0 570 2�SE 21.2 6� 18677 �1102 1 185-2�1 �0 570 2�

Temporary earthing connectors SE 20.3 and SE 21.3Used as a temporary earthing connector when arc protection devices SE 20.1/SE 21.1 or SE 20.2/SE 21.2 are not present. There is no need to peel the covered conductor. The connector includes an arc protection horn suitable for use with a temporary earthing device with screw fixing. The connector has a place for installing Al-thread, so it also works as an arc protection device.

TYPE EAN COVERED TIGHTENING WEIGHT PACKAGE CONDUCTORS mm2 TORQUE Nm g pcsSE 20.3 6� 18677 �0192 3 35-157 �0 560 2�SE 21.3 6� 18677 �130� 9 185-2�1 �0 570 2�

Insulation piercing connector SL 25.2Used as a branch connector for covered conductors. There is no need to peel the covered conductor because the connector is equipped with insulation piercing teeth. The connector is made of corrosion resistant aluminium and the bolts are hot-dip galva-nised steel. The connector is prepared with joint compound.

TYPE EAN FOR COVERED CONDUCTORS TIGHTENING WEIGHT PACKAGE MAIN Al mm2 BRANCH Al mm2 TORQUE Nm g pcsSL 25.2 6� 18677 �0363 7 35-157 35-157 �0 250 25

Live-line connector SL 36 and stirrups PSS 923 and PSS 924The connector SL 36 is made of corrosion resistant aluminium and the bolts of stainless steel. The installation can be made with a live-line stick (e.g. CT �8). Branching and temporary earthing can be made with SL 36 and SL 30 by using stirrups PSS 923 and PSS 92�. The stirrups are made of corrosion resistant aluminium. PSS 923 is a stirrup of L shape and PSS 92� is a stirrup of U shape.

TYPE EAN MAIN BRANCH TIGHTENING WEIGHT PACKAGE CONDUCTORS CONDUCTORS TORQUE mm2 mm2 Nm g pcsSL 36 6� 18677 �1179 3 Al 35-185 Al 35-157 �0 ��0 12PSS 923 6� 18677 �1�29 9 L-stirrup �0 100 12PSS 92� 6� 18677 �1�30 5 U-stirrup �0 170 6

26

Live-line connectors SL 30SL 30 is used as a live-line branching connector for bare conductors. The connector is made of corrosion resistant aluminium and the bolts of stainless steel. The installation can be made with a live-line stick (e.g. CT �8). Branching and temporary earthing can be made with SL 30 and SL 36 by using stirrups PSS 923 and PSS 92�. The stirrups are made of corrosion resistant aluminium. PSS 923 is a stirrup of L shape and PSS 92� is a stirrup of U shape. In SL30 branching point is downwards. In SL 30.1 the branch-ing point is on the side of the connector.

TYPE EAN FOR COVERED CONDUCTORS TIGHTENING WEIGHT PACKAGE MAIN Al mm2 BRANCH mm2 TORQUE Nm g pcsSL 30 6� 18677 �0370 5 25-150 25-150 main �0 �50 2� branch �� SL 30.1 6� 18677 �1153 3 25-150 25-150 main �0 �50 2� branch ��

Sleeve PSS 830PSS 830 is used with live-line connectors SL 30, SL 30.1 and SL 36, when the branch conductor is copper. The sleeve is tin coated aluminium and it is installed into the live-line clamp. The inner diameter of the sleeve is 16 mm.

TYPE EAN Cu WEIGHT PACKAGE mm2 g pcsPSS 830 6� 18677 �0673 7 50-95 10 30

Arc protection horn PSS 464Used with covered conductors as an arc protection horn. The horn withstands 2-3 arcs 10 kA/1 s and after that, it has to be changed. The horn has been approved for fixing temporary earthing device with screw fixing.

TYPE EAN WEIGHT PACKAGE g pcsPSS �6� 6� 18677 �0127 5 200 25

Earthing horn PSS 469Used with covered conductors as a temporary earthing point. The temporary earthing device with screw fixing can be installed to the horn.

TYPE EAN WEIGHT PACKAGE g pcsPSS �69 6� 18677 �0657 7 300 25

Arc protection horn PSS 463 for crossarmUsed with covered conductors on angle crossarms (SH 153.10). The arc protection horn is hot-dip galvanised steel and is supplied with bolt and nut.


Arc protection horn PSS 465 for tension clampUsed with tension clamps SO 85, SO 105 and SO 1�6 on covered lines. The arc protection horn is hot-dip galvanised steel and supplied with a bolt and a nut.


27

Connection set SDP 4.1Connection set SDP �.1 is used for connecting the arc horn of arc protection device SE 20.1 to the suspension clamp SO 2�1 giving the same potential to both components and eliminating radio interference. The set includes an aluminium binding thread and fastening accessories.

TYPE EAN WEIGHT PACKAGE g pcsSDP �.1 6� 18677 �1739 9 200 10

Earthing horn PSS 597Used on pole transformers when temporary earthing is made on jumpers. The horn has been approved for screw type temporary earthing devices. The horn is installed on the conductor with SL �.25, SE 20, SE 21 or SL 25.2 connectors and insulating covers. The earthing horns can be installed on different heights in the conductors.

TYPE EAN COVERED WEIGHT PACKAGE CONDUCTORS mm2 g pcsPSS 597 6� 18677 �0658 � 35-2�1 210 25

Automatic tension joint kitsSuitable for covered conductors, which have to be peeled. The automatic joints are reliable and fast to make. The installation can be made without tools. The color codes make it easy to identify the right type. The wedges ensure a secure joint. The joint kits include a joint, an insulation sleeve and an abrasive band.

TYPE EAN FOR COVERED CONDUCTOR WEIGHT PACKAGE CONDUCTORS ø mm g pcs mm2 / COLORCIL 66 6� 18677 �1�25 1 35-50 / orange-red 5.81-8.6 260 1CIL 67 6� 18677 �1�26 8 70-95 / yellow-grey 9.27-12.06 �70 1CIL 68 6� 18677 �1�27 5 120-150 / pink-black 12.75-1�.86 790 1CIL 69 6� 18677 �3889 9 BLL 157 /green-brown 1�.73-18.�0 850 1

Pulling grips ST 103.501 and ST 103.502For pulling out bare and covered conductors in overhead lines through rollers and pulley fittings. The stockings are manufactured from high strength, parallel stranded fibres and they have a polyethylene sheath. The plastic material is non-conductive, non-cor-rosive and abrasion resistant. The construction is made to prevent damage to other equipment during the pulling operation.

To secure maximum tension force, it is recommended to tape the back end of the stocking on to the conductor with a 50 mm broad PVC tape zone.

TYPE EAN LENGTH mm / TENSION FORCE DIAMETER WEIGHT PACKAGE MATERIAL kN mm g pcsST 103.501 6� 18677 �0823 6 1000 / metal 18 10-20 250 1ST 103.502 6� 18677 �082� 3 1000 / plastic 11 10-20 100 1

Come along clamps CT 102.501 and CT 102.1201For tensioning overhead line spans of both bare and covered conductors. The grips cover a wide range of diameters and can apply high tension force. CT 102 uses an articulated construction. It is easy to mount and change on the line.

TYPE EAN FOR COVERED DIAMETER WEIGHT PACKAGE CONDUCTORS mm g pcs mm2

CT 102.501 6� 18677 �0919 6 35-50 7.87-13.�6 1700 1CT 102.1201 6� 18677 �0918 9 70-120 13.�6-18.80 2800 1

Spiral vibration dampers CO 27 and CO 28Spiral vibration dampers are designed to control high frequency aeolian vibration and are particularly effective on small sized earth wire and cables. They do not impose a concentrated mass or clamping stress on the conductor or cable at the point of at-tachment and are therefore ideally suited for use also on PAS, OPGW, OPCON and ADSS applications.

TYPE EAN FOR COVERED WEIGHT PACKAGE CONDUCTORS mm2 g pcsCO 27 6� 18677 �091� 1 35-50 350 1CO 28 6� 18677 �0915 8 70-150 1000 1

28

Twig protector ST 149Used with covered conductors as a branch protector to prevent the sliding of the branches along the conductor to the arc protec-tion devices or other bare live-line parts. Made of UV-radiation resistant plastic. Can be installed on a conductor under voltage e.g. with live-line tool CT �8.

TYPE EAN DIAMETER WEIGHT PACKAGE mm g pcsST 1�9 6� 18677 �05�3 3 10-20 70 1

Insulating covers SP 15 and SP 16Used as a connector cover. The cover has to be installed so that the drain hole for ambient water is downwards. The cover is made of UV-radiation and weather resistant thermoplastic.

TYPE EAN WEIGHT PACKAGE g pcsSP 15 6� 18677 �0521 1 30 10/100SP 16 6� 18677 �1020 8 50 5/50

Number plates PEM 241Used with conductors to mark the phases. Made of UV radiation resistant plastic. The plates are installed by nylon ties.

TYPE EAN PHASE WEIGHT PACKAGE NO. g pcsPEM 2�1.1 6� 18677 �00�� 5 1 7 1PEM 2�1.2 6� 18677 �00�7 6 2 7 1PEM 2�1.3 6� 18677 �00�9 0 3 7 1

Ensto Green Line products

Ensto is developing a constantly growing family of products to protect wildlife and to gua-rantee uninterrupted power supply. Please, familiarize yourself with our wire markers, live line tools, bird protection sets, protectors for bushings of transformers, flexible covers for jumper loops and protectors for surge arresters and cable terminations. These products you can find on page �2.

Tools

Ensto has a wide range of tools for network building. The range includes e.g. ratchet, torque and fork wrenches, wedges, wire stringing wheels, pole climbing irons, dynamo-meters and swivel for wire linking. For Ensto tools please see page �6.

29

Having a long experience of the advantages of the 6-2� kV Covered Conductor Solu-tion Ensto has developed its special accessories for 36 kV CC. As the 36 kV requires larger phase spacing between the phases we have designed special 36 kV crossarms, insulators and power arc devices.

The traditional range of tension clamps and suspension clamps suits for both 6-2� kV and 36 kV lines. These products are introduced in this catalogue.

Ensto is developing a constantly growing family of products to protect wildlife and to guarantee uninter-rupted power supply. For bird protection sets and insulator covers please see Greenline on page �2.

Ensto has a wide range of tools for network building. For tools please see page �6.

36 kV Covered Conductor Solution

30

Power arc device SDI 20.2Power arc device SDI 20.2 is used as a arcing protection device for covered conductors. The device is suitable for horizontal suspension crossarms that are equipped with line post insulators e.g. SDI 81. Nominal thickness of covering may vary from 2.0 mm up to 3.6 mm. Spark gap is adjusted to 150 mm on 36 kV.

TYPE EAN CROSSARM WEIGHT PACKAGE g pcsSDI 20.2 6� 18677 �1860 0 Horizontal 1250 12

Porcelain line post insulators SDI 81 and SDI 81.1Line post insulator SDI 81 is used for bare or covered 36 kV lines. Creepage distance is 600 mm.

TYPE EAN HIGHEST PER- BREAKING PIN WEIGHT PACKAGE MITTED OPER- LOAD MIN BOLT g pcs ATING VOLTAGE kV kNSDI 81 6� 18677 �2287 � 36 6 M2� x 105 6500 3SDI 81.1 6� 18677 �2288 1 36 6 M2� x 1�0 6600 3

Power arc device SDI 27.1Power arc device SDI 27.1 is used with SDI90.x composite insulators on angle poles with suspension clamp SO 181.5 and on tension poles with tension clamps SO 235 or SO 236. The package includes arcing horns and a 95 mm² conductor with cable lugs. Spark gap is adjusted to 130-150 mm on 2�-36 kV.

TYPE EAN WEIGHT PACKAGE g pcsSDI 27.1 6� 18677 �1913 3 1�00 9

Composite insulators SDI 90 seriesComposite tension insulator SDI 90 series are used for terminal and intermediate poles of 36 kV lines. Creepage distance 613 mm.

TYPE EAN NOMINAL END WEIGHT PACKAGE VOLTAGE FITTINGS g pcs kVSDI 90.280 6�18677�22768 2�…36 eye / eye 1100 3SDI 90.282 6�18677�22782 2�…36 socket / eye 1300 3SDI 90.283 6�18677�22799 2�…36 ball / socket 1100 3SDI 90.28� 6�18677�22805 2�…36 clevis / tongue 1300 3SDI 90.285 6�18677�22812 2�…36 clevis / ball 1200 3SDI 90.288 6�18677�228�3 2�…36 socket / tongue 1300 3

Suspension clamp SO 181.5Suspension clamp SO 181.5 is suitable for covered conductors. This suspension clamp also functions as installation pulley thereby completely eliminating the need for separate pulleys. Conductor joints with diameter under 30 mm can be pulled through the suspension clamp. SO 181.5 has an insulation piercing clamping piece. The clamping piece is connected to the body with a wire for balancing the potential. The insulation piercing part also makes it possible to add an arc protection device to the clamp. Tested for radio interference. The clamp body is made of hot-dip galvanized steel plate. The rollers are made of corrosion resist-ant aluminium alloy, other steel parts are hot-dip galvanized. Suspension bolt 16 mm. Breaking strength 36 kN.

TYPE EAN COVERED TIGHTENING WEIGHT PACKAGE CONDUCTORS mm2 TORQUE Nm g pcsSO 181.5 6� 18677 �0��9 8 35-150 �0 1000 3

ø65

ø80

L36

538

5

55m

in.

A

49.7

14

31

Waterproof tension clamps SO 235 and SO 236For dead ending covered conductors. The clamp is very easy to install compared with the other clamps on the market as there is no need to peel the conductor. The insulation pierc-ing part of the clamp keeps the parts of the clamp at the same potential and prevents partial discharges and radio disturbances. The insulation piercing part also makes it possible to add an arc protection device to the clamp.

TYPE EAN COVERED TIGHTENING WEIGHT PACKAGE CONDUCTORS mm2 TORQUE Nm g pcsSO 235 6� 18677 �1629 3 35-70 �0 1000 9SO 236 6� 18677 �1951 5 95-157 �� 2�50 3

Insulation piercing connector SL 25.2Insulation piercing connector SL 25.2 is used as branch connector for covered conductors. There is no need to peel the covered conductor because the connector is equipped with insulation teeth. The connector is made of corrosion resistant aluminium and the bolts are hot-dip galvanized steel. The connector is prepared with joint compound.

TYPE EAN FOR COVERED CONDUCTORS TIGHTENING WEIGHT PACKAGE MAIN Al mm2 BRANCH mm2 TORQUE Nm g pcsSL 25.2 6� 18677 �0363 7 35-150 35-150 �0 250 25

Insulating cover SP 16Insulating cover SP 16 is used as connector cover. The cover is made of UV-radiation and weather resistant thermoplastic.

TYPE EAN WEIGHT PACKAGE g pcsSP 16 6� 18677 �1020 8 50 5/50

Automatic tension joint kits CIL 66-68Automatic tension joints are suitable for covered conductors which have to be peeled. The automatic joints are reliable and fast to make. The installation can be made without tools. The color codes make it easy to identify right size. The wedges ensure a safe joint. Insulation sleeves and an abrasive band included in kits.

TYPE EAN FOR COVERED CON- CONDUCTOR WEIGHT PACKAGE DUCTORS mm2 / COLOR ø mm g pcsCIL 66 6� 18677 �1�25 1 35-50 / orange-red 5.81-8.6 260 1CIL 67 6� 18677 �1�26 8 70-95 / yellow-grey 9.27-12.06 �70 1CIL 68 6� 18677 �1�27 5 120-150 / pink-black 12.75-1�.86 790 1

Helical tie 115 seriesHelical ties SO 115 series are used for binding the covered conductor on the side groove eg. with the insulator. These helical ties are easy mounting without any special tools. Stripping of insulation is not necessary on covered conductors. The sets (Cat. No.) include 6 pcs ties (one set / cross arm).

TYPE EAN COVERED INSULATOR COLOR WEIGHT PACKAGE CONDUCTORS mm2 NECK mm CODE g pcsSO 115.5073 6� 18677 �0�08 5 35-50-62 73 yellow 530 1SO 115.9573 6� 18677 �0�10 8 70-95-99 73 green 570 1SO 115.5085 6� 18677 �0�09 2 35-50-62 85 red 520 1SO 115.9585 6� 18677 �0�11 5 70-95-99 85 blue 570 1SO 115.150 6� 18677 �1�32 9 120-150-157 73-85 white 630 1

32

Horizontal suspension crossarm SH 248For intermediate poles for covered conductor line. Line post insulators SDI81 are used with the crossarm. Insulators shall be ordered separately.

TYPE EAN PHASE SPACING WEIGHT mm gSH2�8 6� 18677 �22898 600 12900

Horizontal suspension crossarm SH 249For intermediate poles for covered conductor line. Line post insulators SDI81 are used with the crossarm. Insulators shall be ordered separately.

TYPE EAN PHASE SPACING WEIGHT mm gSH2�9 6� 18677 �2290 � 600 12600

Horizontal angle crossarm SH 250For intermediate poles for covered conductor line in angles. Tension insulators SDI90.280 equiped with SO151.5 suspension clamps with SDI 27.1 are used with the crossarm. Insulators and clamps shall be ordered separately.

TYPE EAN PHASE SPACING A PHASE SPACING B WEIGHT mm mm gSH250 6� 18677 �2291 1 1070 1270 35000

Horizontal angle crossarm SH 251For intermediate poles for covered conductor line in angles. Tension insulators SDI90.280 equiped with SO151.5 suspension clamps with SDI 27.1 are used with the crossarm. Insulators and clamps shall be ordered separately.

TYPE EAN PHASE SPACING A PHASE SPACING B WEIGHT mm mm gSH251 6� 18677 �2292 8 1270 1070 38000

Terminal crossarm SH 252For terminating of 36 kV covered conductor line in angles. Tension insulators SDI90.280 equiped with SO235 or SO326 tension clamps with SDI 27.1 are used with the crossarm. Insulators and clamps shall be ordered separately.

TYPE EAN PHASE SPACING WEIGHT mm gSH252 6� 18677 �2293 5 600 22000

Intermediate tension crossarm SH253For intermediate tensioning of 36 kV covered conductor lines. Tension insulators SDI90.280 equiped with SO235 or SO326 tension clamps with SDI 27.1 are used with the crossarm. Additional SDI81 insulator is also needed. Insulators and clamps shall be ordered separately.

TYPE EAN PHASE SPACING WEIGHT mm gSH253 6� 18677 �229�2 600 25000

33

Universal cables can be installed in demanding conditions underground, in water or in air. Ensto has designed a range of special accessories for universal cable systems. Our long experience of demanding circumstances, cold and snowy as well as hot and humid, has helped us to develop reliable and safe accessories. However, because there are so many different manufacturers of universal cables the suit-ability of the accessories should always be con-firmed by the cable manu-facturer.

Ensto Underground Solutions offer a wide range of strong and reli-able joints and terminations. There is a separate Ensto Underground brochure, which can be found in our web-pages www.ensto.com.

Ensto Solutions for Universal Cables, 12-36 kV

3�

Suspension clamp SO 86 with PK rubber insertsUsed for universal cables at straight line and angle poles. The rubber inserts PK 1�3.12 or PK 1�3.2� must be ordered separately for various cables. The suspen-sion clamp is used in angles, one up to 30° and two up to 60°. With a construction of two suspension clamps a yoke SOT 73 is needed.

TYPE EAN OPERATING TIGHTENING WEIGHT PACKAGE VOLTAGE kV TORQUE Nm g pcsSO 86 6� 18677 �051� 3 12-2� 15 910 1PK 1�3.12 6� 18677 �0080 3 12 1�0 1PK 1�3.2� 6� 18677 �0081 0 2� 80 1

Suspension clamp SD 21 with rubber insertsUsed for universal cables at straight line and angle poles. The rubber inserts PK 88 must be ordered separately. The suspension clamp is used in angles, one up to 30° and two up to 60°. With a construction of two suspension clamps a yoke SOT 73 is needed.

TYPE EAN OPERATING TIGHTENING WEIGHT PACKAGE VOLTAGE kV TORQUE Nm g pcsSD 21 6� 18677 �0152 7 12-2� 10 1900 1PK 88 6� 18677 �0098 8 12-2� 1100 1

Suspension clamp SO 99Used for universal cables at straight line and angle poles. The suspension clamp can also be used as an installation pulley for pulling the cable. After a cable has been tightened to its final tension, it is attached to the suspension clamp. The suspension clamp is used for max. 30° angles, depending on the bending radius and tension forces of the cable. At angles exceeding 30° the use of an additional roller set ST 26.99 is recommended.

TYPE EAN OPERATING TIGHTENING WEIGHT PACKAGE VOLTAGE kV TORQUE Nm g pcsSO 99 6� 18677 �0518 1 12 12 830 1

Suspension clamp SO 150Used for universal cables at straight line and angle poles. The suspension clamp can also be used as an installation pulley for pulling the cable. After the cable has been tightened to its final tension, it is attached to the suspension clamp. The suspension clamp is used in max. 30° angles depending on the bending radius and tension forces of the cable.

TYPE EAN OPERATING TIGHTENING WEIGHT PACKAGE VOLTAGE kV TORQUE Nm g pcsSO 150 6� 18677 �0�� 3 12-2� 25 2200 1

Suspension clamp SO 241.1The suspension clamp SO 2�1.1 is suitable for uninsulated messenger. The body is made of corrosion resistant aluminium alloy and the bolt is of hot-dip galvanised steel.

TYPE EAN TIGHTENING MESSENGER WEIGHT PACKAGE TORQUE Nm mm g pcsSO 2�1.1 6� 18677 �19�8 5 �0 6-18.5 655 20

Suspension clamp SO 214Used for the suspension of overhead cables with uninsulated messenger in straight lines and angles up to 90º.

TYPE EAN MESSENGER WEIGHT PACKAGE mm g pcsSO 21� 6� 18677 �1066 6 �.8-13 250 50

115

62

19

R40

M821

3

Ø16

Ø22

240 142

123

24

20d

D

120

120

35

Suspension clamp SO 69.95The suspension clamp SO 69.95 is used for the suspension of the insulated mes-senger in straight lines and at angles up to 90º.

TYPE EAN MESSENGER WEIGHT PACKAGE mm g pcsSO 69.95 6� 18677 �1�57 2 7.0-16.5 230 50

Suspension clamp SO 220Used for the suspension of the Axclight-H and Exclight-H cables with messenger at straight lines and at angles. In angles up to 30° one suspension clamp is used and in angles up to 60° two suspension clamps are needed. With the construc-tion of two suspension clamps a yoke SOT 73 is needed.

TYPE EAN MESSENGER WEIGHT PACKAGE mm g pcsSO 220 6� 18677 �1�3� 3 10-11.5 280 25

Yoke SOT 73SOT 73 is used for universal cable constructions of two suspension clamps with line angles up to 60°.

TYPE EAN LENGTH OF THE WEIGHT PACKAGE HOOK mm g pcsSOT 73 6� 18677 �0892 2 210 7200 1

Tension spiral SO 222.24Used in angle and tension line constructions. When the cable has been pulled to the final tension, it is locked with tension spirals. The suitability has to be checked from the cable manufacturer.

TYPE EAN WEIGHT PACKAGE g pcsSO 222.2� 6� 18677 �19�9 2 7200 1

36

37

Ensto Accessories for Bare ConductorsEnsto´s products for the conventional Bare Conductor Line Networks cover most com-mon conductors. The comprehensive range of the accessories provides a simple and economic system for line erection. They comply with the most commonly used European standards. The Ensto accessories are designed in co-operation with power supply companies. They are easy to install and have a long service life in extremely hard climatic conditions.

Glass tension insulator strings SH 193Suitable for installation on angle and terminal crossarms as well as hooks. The insulators are 2� - 52 kV glass insulators U�0BL according to IEC 60305. They are tested according to IEC 60383/1983. Breaking load is �0 kN.

TYPE EAN CREEPAGE NUMBER TOTAL WEIGHT PACKAGE DISTANCE OF DISCS LENGTH g pcs mm mmSH 193 6� 18677 �0726 6 380 2 3�5 ��00 1SH 193.�53 6� 18677 �1�10 7 570 3 �55 6160 1SH 193.�5� 6� 18677 �1�11 � 760 � 565 7920 1SH 193.�55 6� 18677 �1�12 1 950 5 675 9680 1

Pin insulator SDI 37These ceramic pin insulators are used with 2� kV bare or covered conductors. The insulator incor-porates a split plastic cylinder in the top groove which allows the conductor to be dropped into the groove and retained by the plastic cylinder which enables the conductor to be pulled along the line without the use of pulleys. This arrangement saves time and erection costs. After line tensioning the conductor may be bound to the top groove or to the neck of the insulator with straight lines and to the neck with angle lines.Creepage distance 325 mm. Neck diameter 85 mm. The insulator is tested and certified to IEC 60383 by SGS-FIMKO in Finland.

TYPE EAN HIGHEST PER- BREAKING PIN WEIGHT PACKAGE MITTED OPER- LOAD MIN g pcs ATING VOLTAGE kV kNSDI 37 6� 18677 �0873 1 2� 12.5 SOT 2� 3500 3

Pin insulator SDI 30The insulator SDI 30 is a conventional type 2� kV ceramic pin insulator according to the SFS 500� standard. Suitable for installation on pin SOT 2�. The conductor can be tied to the top groove or to the neck.Creepage distance 325 mm. Neck diameter 85 mm. The insulator is tested and certified to IEC 60383 by SGS-FIMKO in Finland.

TYPE EAN HIGHEST PER- BREAKING PIN WEIGHT PACKAGE MITTED OPER- LOAD MIN g pcs ATING VOLTAGE kV kNSDI 30 6� 18677 �087� 8 2� 12.5 SOT 2� 2900 3

Stay insulator SDI 4.5These nominal 2� kV ceramic insulators are suitable for installation in stay wires up to 52 mm2. Conforms with Standard SFS 37�1. Creepage distance is 95 mm.

TYPE EAN HIGHEST PER- TENSILE WEIGHT PACKAGE MITTED OPER- BREAKING g pcs ATING VOLTAGE kV LOAD kNSDI �.5 6� 18677 �1855 6 2� › 120 2800 10

38

Suspension clamp SO 181Suitable for bare conductors. The clamp also functions as an installation pulley thereby completely eliminating the need for separate pulleys. Conductor joints with diameter under 30 mm can be pulled through the suspension clamp. No loose parts, so it is easy to handle even in difficult conditions. The serrated clamping piece is connected to the body with a wire for balancing the potential. Tested for radio interference. Breaking strength 36 kN. Suspension bolt 16 mm.

TYPE EAN CONDUCTORS TIGHTENING WEIGHT PACKAGE mm2 TORQUE Nm g pcsSO 181 6� 18677 �0��7 8� Al 25-201 20 1000 3 Al/Fe 25-131

Suspension clamps SO 241The suspension clamp SO 2�1 is suitable for bare conductors at medium and low voltages. The body is made of corrosion resist-ant aluminium alloy and the bolt is of hot-dip galvanised steel. Suspension bolt 16 mm.

TYPE EAN BREAKING CONDUCTOR CONDUCTORS TIGHTENING WEIGHT PACKAGE LOAD kN DIAMETER mm mm2 TORQUE Nm g pcsSO 2�1 6� 18677 �1630 9 60 6.0 - 18.5 Al 25-201 �0 550 20 Al/Fe 25-131SO 2�1.2 6� 18677 �1631 6 50 6.0 - 18.5 Al 25-201 �0 630 20 Al/Fe 25-131

Tension clamps SO 85For dead-ending bare and covered conductors. The covered conductor has to be peeled before installing the tension clamp. The body is made of corrosion resistant aluminium alloy and the bolts are hot-dip galvanised steel. The conductor is inserted on one side and clamped by two bolts. Breaking strength �0 kN.

TYPE EAN CONDUCTORS CONDUCTOR TIGHTENING SUSPENSION WEIGHT PACKAGE mm2 DIAMETER mm TORQUE Nm BOLT mm g pcsSO 85 6� 18677 �0511 2 Al 25-132 6.0 - 1�.9 55 16 700 25 Al/Fe 25-99SO 85.2 6� 18677 �0513 6 Al 25-132 6.0 - 1�.9 55 19 700 25 Al/Fe 25-99

Composite stay insulators SDI 70.24SDI 70.2� insulator has high mechanical and electrical capacity combined with light weight.The insulating section is made of glass fibre impregnated with UV stabilized resin and twice cov-ered with silicon rubber. The end thimble is made of aluminium and dimensioned for minimum 52 mm eyelet. Suitable for installation on stay wires up to Fe 52. Tested according to IEC 60383. Ordinary mechanical load �8 kN, max. mechanical load 1�� kN, specified mechanical load 180 kN. Creepage distance 160 mm.

TYPE EAN HIGHEST PER- HIGHEST TENSILE WEIGHT PACKAGE MITTED OPER PERMITTED BREAKING g pcs ATING VOLTAGE LOAD IN LOAD kN kV USE kNSDI 70.2� 6� 18677 �0178 7 2� 35 › 180 800 15

39

Tension clamp SO 146For dead-ending bare or covered conductors. The covered conductor has to be peeled before installing the tension clamp. The body is made of corrosion resistant aluminium alloy. Bolts are hot-dip galvanised steel. The conductor is inserted on one side and clamped by two bolts. Breaking strength �5 kN. Suspension bolt 16 mm.

TYPE EAN CONDUCTORS CONDUCTOR TIGHTENING WEIGHT PACKAGE mm2 DIAMETER TORQUE Nm g pcs mmSO 1�6 6� 18677 �0��3 6 Al 25-132 6 - 15 55 800 25 Al/Fe 25-99

Waterproof tension clamps SO 235SO 235 is to be used with dead-ending medium voltage covered conductors. The insulation piercing part also makes it possible to add an arc protection device to the clamp.

TYPE EAN CONDUCTOR CONDUCTOR WEIGHT PACKAGE ø mm g pcsSO 235 6� 18677 �1629 3 Raven, Pigeon, AAAC 132 10 - 15 1000 9SO 235.1 6� 18677 �19�6 1 Sparrow 8 - 10.1 1200 9

Sleeve PSS 830PSS 830 is used with live-line connectors SL 30, SL 30.1 and SL 36, when the branch conductor is copper. The sleeve is tin coated aluminium and it is installed into the live-line clamp. The inner diameter of the sleeve is 16 mm.

TYPE EAN Cu WEIGHT PACKAGE mm2 g pcsPSS 830 6� 18677 �0673 7 50-95 10 30

Live-line connector SL 30Used with bare conductors as a live-line branching connector. The connector is made of corrosion resistant aluminium and the bolts of stainless steel. For copper branch conductors sleeve PSS 830 is needed. The installation can be made with a live-line stick (e.g. CT �8). In SL 30 branching point is downwards. In SL 30.1 the branching point is on the side of the connector.

TYPE EAN MAIN CON- BRANCH CON- TIGHTENING WEIGHT PACKAGE DUCTORS mm2 DUCTORS mm2 TORQUE Nm g pcsSL 30 6� 18677 �0370 5 25-150 25-150 main �0 �50 2� branch �� SL 30.1 6� 18677 �1153 3 25-150 25-150 main �0 �50 2� branch ��

Parallel groove connectors SL 14.2, SL 4.25 and SL 8.21For aluminium or steel to aluminium connections where no mechanical tension is involved. The lower section of the body protects the bolts from corrosion and makes tightening of the bolts easy, using fork wrench ST 3�. The correct tightening torque is essen-tial to the connection. The body is made of corrosion resistant aluminium alloy, and the bolts are hot-dip galvanised steel. All con-nectors are pre-brushed and prepared with joint compound. SL �.25 is equipped with springs to make the installation even easier.

TYPE EAN MAIN CON- BRANCH CON- TIGHTENING WEIGHT PACKAGE DUCTORS mm2 DUCTORS mm2 TORQUE Nm g pcsSL 1�.2 6� 18677 �0355 2 Al/Cu 50-2�0 Al/Cu 50-150 �� 280 25SL �.25 6� 18677 �0375 0 Al 16-120 Al 16-120 20 125 50SL 8.21 6� 18677 �0378 1 Al 50-2�0 Al 50-2�0 �0 280 25

Tension clamp SO 105For dead-ending bare and covered conductors. The covered conductor has to be peeled before installing the tension clamp. The body is made of corrosion resistant aluminium alloy and the bolts are hot-dip galvanised steel. The conductor is inserted on one side and clamped by four bolts. Breaking strength 65 kN. Suspension bolt 16 mm.

TYPE EAN CONDUCTORS CONDUCTOR TIGHTENING WEIGHT PACKAGE mm2 DIAMETER TORQUE Nm g pcs mmSO 105 6� 18677 �0�03 0 Al/Fe 63-99 10 - 20 �� 1�00 10

�0

Parallel groove connectors SL 37.1, SL 37.2 and SL 39.2These connectors are used for aluminium or steel to aluminium connections where no mechanical tension is involved. The cor-rect tightening torque is essential to the connection.

TYPE EAN MAIN CON- BRANCH CON- TIGHTENING WEIGHT PACKAGE DUCTORS mm2 DUCTORS mm2 TORQUE Nm g pcsSL 37.1 6� 18677 �1��0 � Al 6-95 Al 6-95 22 55 200SL 37.2 6� 18677 �1��1 1 Al 6-95 Al 6-95 22 100 50SL 39.2 6� 18677 �1960 7 Al 16-150 Al 16-150 22 120 50

Automatic tension jointsThe automatic joints are reliable and fast to make. The installation can be made without tools. The colour codes make it easy to identify the right type. The wedges ensure a safe joint.

TYPE EAN CONDUCTOR CONDUCTOR COLOR CODE WEIGHT PACKAGE ø mm g pcsCIL 63 6� 18677 �1�22 0 Sparrow 5.81-8.6� orange/red 155 25CIL 6� 6� 18677 �1�23 7 Raven 9.27-12.06 yellow/grey 220 25CIL 65 6� 18677 �1�2� � Pigeon 12.75-1�.86 pink/black 730 10CIL 71 6� 18677 �1772 6 AAC 132, AAC 201 1�.73-18.�0 green/brown 8�0 10CIL 72 6� 18677 �18�� 0 AAC 2�1 18.8-21.7 bluegreen 1080 10

Automatic joints CIL 9.xxCIL 9 automatic tension joints are used for universal cables with steel messenger and also for stay wire applications.

TYPE EAN CONDUCTORS CONDUCTOR WEIGHT PACKAGE ø mm g pcsCIL 9.25 6� 18677 �185� 9 Fe 25 5.�6-6.86 272 50CIL 9.33 6� 18677 �1907 2 Fe 33 6.86-8.00 381 50CIL 9.52 6� 18677 �1908 9 Fe 52 8.25-9.96 599 25CIL 9.68 6� 18677 �1853 2 Fe 68 9.96-11.56 726 25CIL 9.89 6� 18677 �1909 6 Fe 89 11.56-13.21 871 25

Dead ends COL 25, COL 33 and COL 52COL automatic dead ends are used for steel stay wire or steel messenger wire. COL dead ends are guaranteed to hold a minimum of 90% of the rated strength of the steel wire. They are easy and quick to install - tools are not needed.

TYPE EAN CONDUCTORS CONDUCTOR WEIGHT PACKAGE ø mm g pcsCOL 25 6� 18677 �18�9 5 Fe 25 5.�6-6.86 280 50COL 33 6� 18677 �1850 1 Fe 33 6.86-8.00 380 50COL 52 6� 18677 �1851 8 Fe 52 8.25-9.96 590 25

Insulated stay wire sets SHSThe complete stay wire sets are standardized in 10 sets. There are sets for low voltage and medium voltage lines. The latter ones are supplied with a ceramical stay insulator. The wire gauge is 25 mm² steel wire and the permitted load up to 17.5 kN. All steel parts are hot-dip galvanized and plastic marking tubes are made of weather and UV-resistant material.

TYPE EAN STAY WIRE TOTAL LENGTH INSULATOR UPPER END WEIGHT PACKAGE mm2 m TYPE FITTING g pcsSHS 25K.165L 6� 18677 �0769 7 25 16.50 ceramic clamp 9600 1/50SHS 25K.165R 6� 18677 �0770 3 25 16.50 ceramic iron 10700 1/50SHS 12.0611232 6� 18677 �0253 1 52 18 composite clamp 11200 1/50SHS 5.0610052 6� 18677 �1�35 0 68 18 composite clamp 1�500 1/50

Disconnector SZ 24SZ 2� disconnector is an ideal solution for MV overhead lines. SZ 2� is a more economical and practical solution for pole mounted transformer substations, cable terminations, branch lines and sectional poles compared to the traditional disconnectors. SZ 2� includes three disconnector units.

TYPE EAN RATED RATED RATED RATED LINE- WEIGHT PACKAGE VOLTAGE FREQUENCY NOMINAL CHARGING g set Ur Hz CURRENT BREAKING Ir CURRENT I4b, ASZ 2� 6� 18677 �1956 0 2� 50 �00 10 9600 1

�1

Ensto has developed a range of live line tools to facilitate live line work. We have live line branching connectors for bare and covered conductor lines. Please note that there are different local regulations for live line work. The live line work may only be done by professionals who have been trained accord-ing to local regulations.

Ensto Green LineEnvironmental aspects are increas-ingly important when building an electricity network today.

Ensto is working together with electricity utilities and environmen-tal experts to find ways to protect wildlife from electricity distribution network.

At the same time, the quality of electricity distribution is improving as the damage caused by birds and small animals is decreasing. You should also bear in mind the savings on repair expenses.

The most problematic places are electricity supply lines when they cross bird migration routes, trans-former stations and high voltage terminals in the poles.

Ensto is developing a constantly growing family of products to protect wildlife and to guarantee uninter-rupted power supply.

The present package comprises a wire marker, live line tools and working methods, bird protectors for line insulators, protectors for bush-ings of transformers, flexible covers for jumper loops and protectors for surge arresters and cable termina-tions.

Green Line Installation

�2

Bird protector set SP 46.3 for underground cable terminalsPrevents short-circuiting by large birds or airborne debris at surge arresters or cable terminals in medium voltage networks. Bare jumpers can be protected with flexible protectors SP 31.3. Made of weather and UV resistant plastic. SP �6.3 consists of 3 protector units.

TYPE EAN WEIGHT PACKAGE g setSP �6.3 6� 18677 �0533 � 300 1

Bird protector sets SP 45.3 and SP 60.3SP �5.3 and SP 60.3 bird protectors prevent failures created by birds or other animals in bare or covered lines. These protectors are suitable for different pin and line post insulators. They are also easy to install even in line angles or when the conductor is attached to the neck of the insulator. SP �5.3 and SP 60.3 covers arc protecting devices (i.e. SE 20.2) in covered conductor lines and it is weather resistant. The SP �5.3 bird protector is 1000 mm long. Extra length can be achieved in combination with SP 31.3. SP 60.3 can be installed in a live line with the aid of special tools.

TYPE EAN WEIGHT PACKAGE g setSP �5.3 6� 18677 �0532 7 660 1SP 60.3 6� 18677 ��171� 1780 3

Cable protector set SP 31.3Flexible cover for jumpers or conductors close to insulators. Can be used together with SP 36.3 for pin insulators or transformer bushings. Easy tie fixing. Made of weather and UV resistant plastic. Delivered in complete sets of 3 pcs.

TYPE EAN WEIGHT PACKAGE g setSP 31.3 6� 18677 �0526 6 330 1

Bird protection set SP 36.3Used for bushings, insulators and surge arresters in dia. 100-180 mm. Can be used together with flexible protector SP 31.3. Easy tie fixing. Made of weather and UV resistant plastic. Delivered in complete sets of 3 pcs for one transformer.


Bird protection set SP 38.3Flexible cover for low voltage bushings, transformers and motors. Easy tie fixing. Made of weather and UV resistant rubber. Delivered in complete sets of 3 pcs.


68

1000

76,5

Ø130

100

32

�3

Warning balls SP 48Wire markers are used for marking overhead lines and wires. Can be used at crossings of water courses and roadways, birds mi-gration routes and near airports. Warning balls SP �8 have a diameter of 600 mm. Available in different red-white combinations.

TYPE EAN CONDUCTOR COLOR DIAMETER WEIGHT PACKAGE DIAMETER mm CODE mm g pcsSP �8.1 6� 18677 �053� 1 Al Fe 9-20 red - white 600 6100 1SP �8.2 6� 18677 �1366 7 Al Fe 9-20 white 600 6100 1SP �8.3 6� 18677 �1367 � Al Fe 9-20 red 600 6100 1

Wire markers SP 43Wire markers are used for marking overhead lines and wires. They can be used at crossing of water courses and roadways, bird migration routes and near airports. It also prevents conductors from clashing together. The installation is easy with any standard operating rod, like CT �8.6�. Wire markers SP �3 have a diameter of 200 mm.

TYPE EAN CONDUCTOR COLOR DIAMETER WEIGHT PACKAGE DIAMETER mm mm g pcsSP �3 6� 18677 �0530 3 Al Fe 7-21 orange 200 �50 1SP �3.1 6� 18677 �0820 5 Al Fe 7-21 orange + reflectors 200 �50 1SP �3.2 6� 18677 �0821 2 Cu 7-21 orange 200 �50 1 SP �3.3 6� 18677 �0822 9 Al Fe 7-21 red - white 200 �50 1

��

Ensto has a wide range of crossarms and pole acces-sories for medium voltage lines. For instance, our full range of crossarms develo-ped for PAS or BLL/BLX lin-es has been in use in Nor-dic countries for decades.

CrossarmsOur existing range of crossarms cov-ers most typical products for• PAS system with pin insulators• BLL/BLX system with line post

insulators• Bare MV systems

For more detailed information of all available crossarm types, please contact us to find out the best solu-tion for different needs. Ensto is also capable to develop new cros-sarm models fulfilling many differ-ent standards. Ensto’s crossarm production facilities are flexible to all custom solutions. Material for cros-sarms is hot dip galvanized steel.

Pole AccessoriesEnsto provides also very vast product portfolio for different kind of pole ac-cessories made of hot dip galvanized steel. Ensto offers• Finished stay wire sets• Eye-bolts and stay anchors• Stay anchors for rock installations • Pole braces for wooden poles• Hooks• Pole reinforcers for wooden poles• Pole foundations for marsh poles

Ensto Crossarms and Pole Accessories for Medium Voltage Systems

�5

Tools

Ensto has a wide range of tools for network building. Together with our custom-ers we have developed many tools to facilitate the installation work. The range includes e. g. ratch-et, torque and fork wrench-es, wedges, wire string-ing wheels, pole climbing irons, dynamometers and swivel for wire linking.

46

Wire brush ST 18 In aluminium connections it is important to remove the Al-oxide from the aluminium surfaces by using a wire brush. Use of joint compound SR 1 prevents further re-oxidation.ST 18.2 is the case for ST 18.

CaT.No. EaN WEighT PaCkagE g pcsST 18 64 18677 40544 0 70 10ST 18.2 64 18677 40545 7 20 10

Joint compound SR 1Used for the prevention of oxidation on aluminium surfaces. The use of the wire brush and joint compound SR 1 reduces the contact resistance. It also protects the connection from corrosion. There are no skin- irritant ingredients in the grease. CaT.No. EaN WEighT PaCkagE g pcsSR 1 64 18677 40540 2 225 25SR 1.1 64 18677 41470 1 80 20

Ratchet wrench CT 164

For installation of connectors and suspension fittings. The wrench body is made of steel and the grip of oil resistant rubber. The wrench is double-sided 13 and 17 mm.

CaT.No. EaN SoCkET SizE LENgTh WEighT PaCkagE mm mm g pcsCT 164 64 18677 41421 3 13 and 17 280 280 1

Torque wrench ST 30

For tightening connectors and fittings with standard sockets. With aluminium connectors it is essential that the bolts are tightened by using the correct torque. ST 30 is a high quality adjustable wrench with a wide torque range. The read-outs are given in Nm and lbs.-ft.

CaT.No. EaN TighTENiNg WEighT SoCkET adaPTER PaCkagE ToRquE Nm g mouNT/iNChES pcsST 30 64 18677 40875 5 8-54 600 1/2” 1

Sockets for torque wrench ST 30: ST 12, ST 13, ST 113 and ST 115

CaT.No. EaN SoCkET SizE FoRm WEighT PaCkagE mm g pcsST 12 64 18677 41155 7 17 hexagonal 60 1ST 13 64 18677 41156 4 13 hexagonal 60 1ST 115 64 18677 41413 8 19 hexagonal 75 1CT 113 64 18677 41414 5 6 allen 60 1

Fork wrench ST 34Used for holding the connector while tightening the bolts. Approved also for insulation piercing connectors with conductors live.

CaT.No. EaN WEighT PaCkagE g pcsST 34 64 18677 40554 9 375 25

47

Wire stringing wheels ST 26.1, ST 26.11, ST 26.22 and ST 26.33 Used for pulling in overhead cables. ST 26.1, ST 26.33 and ST 26.11 are used for straight lines and small angles up to 30 degrees. Double pulley ST 26.22 is used for larger angles up to 90 degrees.

CaT.No. EaN dESCRiPTioN SizE oF ThE CabLE WEighT PaCkagE gRoovE dia mm g pcsST 26.1 64 18677 40862 5 Pulley/hook attachment 50 1500 10 Plastic wheelST 26.11 64 18677 41011 6 Pulley/chain attachment 50 3900 3 Plastic wheelST 26.22 64 18677 41012 3 Pulley/chain attachment 50 5300 3 Plastic wheelST 26.33 64 18677 41013 0 Pulley/hook attachment 50 2500 5 Al wheel

Pole climbing irons CT 2Made of Al-alloy. The irons can be adjusted with different sizes of wooden poles. CaT.No. EaN PoLE WEighT PaCkagE diamETER mm g pcsCT 2 64 18677 40878 6 200-300 4200 1

Pole climbing irons ST 155

Made of alloyed and heat-refined steel. The welded and forged areas of the irons are tested for cracks. Irons ST 155 are supplied with straps.

CaT.No. EaN max. PoLE WEighT PaCkagE diamETER mm g pcsST 155.8 64 18677 40830 4 200 2600 1ST 155.11 64 18677 40828 1 280 2700 1ST 155.14 64 18677 40829 8 350 2800 1

Come along clamps CT 102 and CT 105For tensioning overhead line spans of single wire.

CaT.No. EaN CoNduCToR WEighT PaCkagE diamETER mm g pcsCT 102.501 64 18677 40919 6 7.87 - 13.46 1900 1CT 102.1201 64 18677 40918 9 13.46 -18.80 3800 1CT 105.20 64 18677 41613 2 4 - 20 1700 1CT 105.35 64 18677 41614 9 6 - 35 2000 1CT 105.70 64 18677 41615 6 5 - 10 900 1

Pulling grips CT 103

Pulling grips are made of high-grade galvanised steel wire, in a double weave construction for safe and secure cable pulling. CaT.No. EaN diamETER gRiP LENgTh SmFL WEighT RaNgE mm mm kN gCT 103.35 64 18677 41207 3 20-30 600 22 200CT 103.50 64 18677 41208 0 30-40 600 36 200CT 103.95 64 18677 41209 7 40-50 600 54 300ST 103.501 64 18677 40823 6 10-20 1000 18 400ST 103.502 64 18677 40824 3 10-20 1000 11 150

�8

Dynamometer ST 112

Used for setting the correct tension on all kinds of overhead line conductors.The dynamometers are lightweight and compact. They have a built-in measuring dial with scales accord-ing to the maximum load.

CAT.NO. EAN MAXIMUM STEP WEIGHT PACKAGE LOAD kg kg g psc ST 112.1 6� 18677 �1�15 2 1000 20 800 1 ST 112.2 6� 18677 �1�16 9 2000 50 1200 1 ST 112.3 6� 18677 �1�17 6 3000 50 2300 1

Cable hoists ST 116 and CT 116

Ratchet puller for line tensioning.

CAT.NO. EAN LIFT HEIGHT m CAPACITY kg WEIGHT PACKAGE SINGLE/DOUBLE WIRE SINGLE/DOUBLE WIRE g pcsST 116 6� 18677 �1�18 3 3/1,5 500/1000 �100 1ST 116.1 6� 18677 �1�19 0 �/2 750/1500 �700 1CT 116.3 6� 18677 �1�20 6 �/2 �5�/908 �300 1CT 116.7 6� 18677 �1216 5 9/�.5 680/1360 6100 1

Swivel for conductor linking CT 104

Swivels are essential for effective pulling operation of underground cables and overhead conductors. The swivels are fitted with bearings to prevent build up of twist and loops in the cable or pulling rope.

CAT.NO. EAN LENGTH ROPE DIA WEIGHT WORKING PACKAGE mm mm g TENSION kN pcsCT 10� 6� 18677 �1210 3 125 10 500 12 1

�9

Notes

50

Product index

Type Product description page

CHK 25.1 Stay wire clamp �8

CIL 63 Automatic tension joint �0

CIL 6� Automatic tension joint �0


CIL 66 Automatic tension joint kit 27, 31



CIL 69 Automatic tension joint kit 27



CIL 9.25 Automatic joint �0





CO 120 Helical tie set 2�

CO 27 Spiral vibration damper 27

CO 28 Spiral vibration damper 27



COL 25 Dead-end �0



CT 102.1201 Come along clamp 27, �7

CT 102.501 Come along clamp 27, �7

CT 103.35 Pulling grip �7



CT 10� Swivel for conductor linking �8

CT 105.20 Come along clamp �7



CT 113 Sockets for torque wrench �6

CT 116.3 Cable hoist �8

CT 116.7 Cable hoist �8

CT 16� Ratchet wrench �6

CT 2 Pole climbing irons �7

PEM 2�1.1 Number plates 28




PK 1�3.12 Suspension clamp 3�

PK 1�3.2� Suspension clamp 3�

PK 88 Suspension clamp 3�

PSS �63 Arc protection horn for cross arm 26

PSS �6� Arc protection horn 26

PSS �65 Arc protection horn for tension clamp 26

PSS �69 Earthing horn 26

PSS 597 Earthing horn 27

PSS 715 Spark gap horn 23

PSS 715.1 Spark gap horn 23

PSS 830 Sleeve 26, 39

PSS 923 Stirrups 25

PSS 92� Stirrups 25

SD 21 Suspension clamp 3�

SDI 10.2 Power arc device 22

SDI 20.2 Power arc device 22, 30



SDI 25 Power arc device 23

SDI 27.1 Power arc device 22, 30

SDI 30 Pin insulator 21, 37

SDI 37 Pin insulator 21, 37

SDI �.5 Pin insulator 21, 37

SDI �6.5 Current limiting arc horn 23




SDI 70.2� Composite stay insulator 21, 38

SDI 81 Porcelain line post insulator 30

SDI 81.1 Porcelain line post insulator 30

SDI 90.150 Composite insulator 22

SDI 90.15� Composite insulator 22

SDI 90.280 Composite insulator 22, 30



SDI 90.28� Composite insulator 22, 30



51


SDP �.1 Connection set 27

SE 20 Insulation piercing connector 2�

SE 20.1 Arc protection device 25



SE 21 Insulation piercing connector 2�




SH 193 Glass tension insulator string 37

SH 193.�53 Glass tension insulator string 37

SH 193.�5� Glass tension insulator string 37

SH 193.�55 Glass tension insulator string 37

SH 2�8 Horizontal suspension crossarm 32

SH 2�9 Horizontal suspension crossarm 32

SH 250 Horizontal angle crossarm 32

SH 251 Horizontal angle crossarm 32

SH 252 Terminal crossarm 32

SH 253 Intermediate tension crossarm 32

SHS 12.0611232 Insulated stay wire set �0

SHS 25K.165L Insulated stay wire set �0

SHS 25K.165R Insulated stay wire set �0

SHS 5.0610052 Insulated stay wire set �0

SL 1�.2 Parallel groove connector 39

SL 25.2 Insulation piercing connector 25, 31

SL 30 Live-line connector 26, 39

SL 30.1 Live-line connector 26, 39

SL 36 Live-line connector 25

SL 37.1 Parallel groove connector �0



SL �.25 Parallel groove connector 39

SL 8.21 Parallel groove connector 39

SO 105 Helical tie set 2�, 39

SO 115.150 Helical tie set 2�, 31





SO 1�6 Helical tie set 2�, 39

SO 150 Suspension clamp 3�

SO 181 Suspension clamp 38

SO 181.5 Suspension clamp 23, 30

SO 21� Suspension clamp 3�

SO 216.157 Helical tie set 2�

SO 216.2�1 Helical tie set 2�



SO 220 Suspension clamp 35

SO 222.2� Tension spiral 35

SO 235 Waterproof tension clamp 2�, 31, 39


SO 235.1 Waterproof tension clamp 39

SO 236 Waterproof tension clamp 2�, 31

SO 2�1 Suspension clamp 38

SO 2�1.1 Suspension clamp 3�

SO 2�1.2 Suspension clamp 38

SO 69.95 Suspension clamp 35

SO 85 Tension clamp 23, 38

SO 85.2 Tension clamp 38



SOT 73 Yoke 35

SP 15 Insulating cover 28

SP 16 Insulating cover 28, 31

SP 31.3 Cable protector set �2

SP 36.3 Bird protection set �2

SP 38.3 Bird protection set �2

SP �3 Wire marker �3

SP �3.1 Wire marker �3



SP �5.3 Bird protector set �2

SP �6.3 Bird protector set for underground cable terminals �2

SP �8.1 Warning balls �3



SP 60.3 Bird protector set �2

SR 1 Joint compound �6

SR 1.1 Joint compound �6

ST 103.501 Pulling grip 27, �7

ST 103.502 Pulling grip 27, �7

ST 112.1 Dynamometer �8



ST 115 Sockets for torque wrench �6

ST 116 Cable hoist �8

ST 116.1 Cable hoist �8



ST 1�9 Twig protector 28

ST 155.11 Pole climbing irons �7

ST 155.1� Pole climbing irons �7

ST 155.8 Pole climbing irons �7

ST 18 Wire brush �6

ST 18.2 Wire brush �6

ST 26.1 Wire stringing wheels �7




ST 30 Torque wrench �6

ST 3� Fork wrench �6

SZ 2� Disconnector �0

UTILITY NETWORKS ENSTO SEKKO OYP.O. BOX 51FI-06101 PORVOOTEL. 0204 76 21FAX 0204 76 [email protected]

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ACCESSORIES FOR MEDIUM VOLTAGE DISTRIBUTION NETWORKS · PDF fileACCESSORIES FOR MEDIUM VOLTAGE DISTRIBUTION NETWORKS Ensto Overhead. ... electricity networks with a low failure ...

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