Translation of original operating manual Version 1.0 Operating Manual G HSI500 / HSI640 / HSI1000 / HSI1250 Helios Systems Eckernförder Landstrasse 78 24941 Flensburg Germany Tel.: +49-(0)461-318011-70 Fax: +49-(0)461-318011-71 Mail: [email protected]All rights reserved. Full or partial reproduction is only permitted with the consent of Helios Systems. Creation date: 25. November 2010
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Operation Manual HSI500 HSI640 HS1000 HSI1250 V31 Eng
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Transcript
Translation of original operating manual Version 1.0
The HSI500 / HSI640 / HSI1000 / HSI1250 from Helios Systems has been specially developed for use in photovoltaic systems. The HSI500 / HSI640 / HSI1000 / HSI1250 converts the DC voltage that is given off by the solar generators into grid-conformant alternating current and feeds it into the power grid.The HSI500 and HSI640 are each comprised of a central inverter and a control cabinet. Three cabinets are supplied with the product groups HSI1000 and HSI1250 – two central inverters and a control cabinet.
1.2 Intended use
The HSI500 / HSI640 / HSI1000 / HSI1250 may only be operated in photovoltaic systems and serves exclusively for the conversion of direct current into alternating current.It may only be operated in IT networks.
Intended use also includes reading the operating manual, as well as complying with all instructions contained in the operating manual, particularly the safety instructions. The operating manual must be kept for the entire service life of the product. Maintenance work of any type may only be performed by employees of Helios Systems. Observe all prescribed time intervals.
The HSI500 / HSI640 / HSI1000 / HSI1250 may only be set up within the ambient conditions specified in section “Technical data" on page 25.
1.3 Improper use
Any use other than the use specified under section “Intended use" on page 1 is considered improper use.The following uses of the HSI500 / HSI640 / HSI1000 / HSI1250 are included under improper use:
• in uninterruptible power supplies (UPS),
• in powered vehicles or
• as a component of a frequency converter.
In the case of improper use of the HSI500 / HSI640 / HSI1000 / HSI1250, safe operationis not guaranteed.Any modifications of the HSI500 / HSI640 / HSI1000 / HSI1250 are prohibited.
The HSI500 / HSI640 / HSI1000 / HSI1250 conforms to the standards and the declaration of conformity.
1.5 About this operating manual
This operating manual provides information about safety, function, transport, installation (including commissioning and decommissioning), disposal, faults and maintenance of the HSI500 / HSI640 / HSI1000 / HSI1250 from Helios Systems.
This operating manual is only intended for expert personnel authorised by the operator and trained in electrical engineering. The respective competences of the electrician must be clearly established by the operator.In addition, special qualifications are required for the following activities:
Activity Qualification/may only be performed by
Transport Authorised and trained specialists
Set-up Qualified electricians who have been trained and authorized
Commissioning Qualified electricians who have been trained and authorized
Instruction Employees of Helios Systems
Fault remedy Qualified electricians who have been trained and authorized
Maintenance/service Qualified electricians who have been trained and authorized
Cleaning Authorised and trained specialists
Repair Employees of Helios Systems
Decommissioning Qualified electricians who have been trained and authorized
During operation the doors of the central inverter must remain closed!
DANGER!
Life-threatening danger due to residual voltage.
After switching off the central inverter, observe a minimum wait time of 30 minutes before opening, without fail!
DANGER!
Life-threatening danger due to high voltage.
For all tasks in the vicinity of the central inverter:
• Maintain the safety distance to the central inverter that must be complied with in accordance with BGV A3 (see Table 4/BGV A3 "Safety distances for non-electrical work, depending on the rated voltage")!
• Comply with the sequence of protective measures:
1. Disconnect,
2. Safeguard from being switched on again,
3. Ensure that equipment is de-energized,
4. Ground and short circuit,
5. Cover or shield adjacent live components.
• Have the work area marked before starting work (responsible party according to BGI 758).
Make sure that only authorized and trained electricians work on the central inverter. The respective competences of the qualified electrician must be clearly established. In addition, special qualifications are required for the following activities: (see section “About this operating manual" on page 2).
Prior to starting all tasks on the central inverter:
• Ensure that the central inverter is disconnected from the grid.
• Ensure that the intermediate circuit of the central inverter has discharged.
• Safeguard the central inverter from switching on again spontaneously.
• Prior to performing tasks on the central inverter use a suitable tool to ensure that residual voltage is not present.
• Use suitable tools with appropriate markings and PPE for working on live parts (VDE 0680/VDE 0682).
DANGER!
Life-threatening danger due to a lack of help.
• If there is an accident a second person must provide help.
• Always work with a second person near you!
NOTICE!
Warning against damage to the HSI500 / HSI640 / HSI1000 / HSI1250.
Improper repair work can cause damage to the central inverter.
All repair tasks should be performed by employees of Helios Systems.
DANGER!
Life-threatening danger due to failure to comply with the safety instructions.
• Comply with the information and safety instructions affixed to the device and in this operating manual.
• Make sure that the operating manual is kept near the HSI500 / HSI640 / HSI1000 / HSI1250.
• Only use knives with a covered handle and cable measurement handles with a circular protrusion to prevent fingers from sliding in the direction of the blade.
• Wear protective gloves when using knives with a fixed blade.
• Do not keep a knife with open blade in work clothes or in the tool belt.
DANGER!
Danger of falling and injury when working on ladders.
• Check whether the tasks that must be performed can be safely performed from ladders. Otherwise, use work platforms or scaffolds.
• Select a suitable ladder and use it as intendede. g. do not use a step ladder as an extension ladder).
• Ensure that the set-up site is safe (capable of bearing a load, level, and that the ladder cannot slip).
• Wear safety footwear.
WARNING!
Warning - harmful to health.
The electrolytic capacitors contain ethylene glycol that is considered to be an irritant and harmful to health.
Make sure that only authorized and trained electricians work on thecentral inverter. The respective competences of the qualified electrician must be clearly established. In addition, special qualifications are required for the following activities: (see section “About this operating manual" on page 2).
For tasks performed on the central inverter it must remain in a de-energised state to the extent possible for the entire duration of the tasks. This is achieved via the following five safety rules:
1. Disconnect – provide suitable devices for activating the switch elements.
2. Safeguard against restarting – provide suitable devices to safeguard against restarting.
3. Ensure de-energised state – provide suitable voltage detectors(up to 1000 V rated voltage, two-pole).
4. Ground and short circuit.
5. Cover or shield adjacent live components – provide suitable covering material appropriate for the activity to be performed.
The release for work should only be given after the person responsible for the work executes and checks the five safety rules.
• the operation of the HSI500 / HSI640 / HSI1000 / HSI1250 takes place in accordance with the valid legal provisions and the applicable safety instructions for the equipment in this operating manual,
• all safety instructions cited in this manual and affixed to the HSI500 / HSI640 / HSI1000 / HSI1250 are complied with, understood, and followed,
• all safety devices are always in faultless and functional operating status, (e. g. emergency stop switch on the control cabinet),
• the prescribed intervals or intervals specified in the operating manual for maintenance tasks are complied with,
• maintenance work may only be performed by authorizedand trained, qualified electricians,
• repair tasks are only executed by employees of Helios Systems.
Ensure that the guidelines specified in BGV D6: Cranes, are satisfied.The angle between the ropes or chains of the crane and the top side of the HSI500 / HSI640 / HSI1000 / HSI1250 must be at least 45° (see section “Crane transport" on page 34).
DANGER!
Life-threatening danger due to residual voltage.
The HSI500 / HSI640 / HSI1000 / HSI1250 may only be installed, maintained, commissioned and de-commissioned by qualified electricians who have been trained and authorized.
• Ensure that a second instructed person, who can help in an emergency, is always present for all tasks performed on electrical equipment. If there is an accident the second person must switch off the power supply and provide help.
• After switching off the central inverter, observe a minimum wait time of 30 minutes prior to opening, without fail!
• Prior to performing tasks on the central inverter use a suitable tool to ensure that residual voltage is not present. On the display (optional), read out the DC voltage that is applied.
• Never open the central inverter during operation. Observe the operating manual, and especially the safety instructions, without fail.
• Observe the safety instructions affixed to the HSI500 / HSI640 / HSI1000 / HSI1250.
• Only operate the HSI500 / HSI640 / HSI1000 / HSI1250 in IT networks.
DANGER!
Danger of injury during crane operation.
Deficiencies emerging during crane operation can result in severe or fatal injuries.The crane should only be operated by authorized specialists who have been trained in the area of crane operation.
Ensure that the guidelines specified in BGV D27: Industrial trucks, are satisfied.
DANGER!
Danger of injury during transport.
Deficiencies emerging during transport can result in severe or fatal injuries.The industrial truck may only be operated by authorized, qualified personnel who are trained in the use of industrial trucks.
2.8 Identification of the HSI500 / HSI640 / HSI1000 / HSI1250
The type plates of the inverter and the control cabinet are located at the bottom on the outside of the door, at the top on the inside of the door and on the respective mounting plates.
The type plate includes the following information:• Serial Number• Name• Type• Power• Voltage• Frequency• Short Circuit Level• Year of Manufacture
Examples of the respective type plates are shown in the following:
HSI500 power element HSI640 power element
HSI500 / HSI640 control cabinet HSI1000 / HSI1250 control cabinet
Check the delivery for completeness. If the delivery is not complete, please contact Helios Systems.
Check the HSI500 / HSI640 / HSI1000 / HSI1250 for transport damage. If you determine that there is transport damage, immediately contact the freight forwarder.
3.1.1 Included in the delivery
The scope of delivery varies, depending on whether you are using the HSI500, HSI640, HSI1000 or HSI1250:
HSI500 / HSI640:
• 1x central inverter
• 1x control cabinet
• Control cabinet key for central inverter and control cabinet
• Operating manual
• Test log - final test
• Test protocol - insulation monitor
HSI1000 / HSI1250:
• 2x central inverter
• 1x control cabinet
• Control cabinet key for central inverter and control cabinet
The HSI500 / HSI640 / HSI1000 / HSI1250 from Helios Systems has been specially developed for use in photovoltaic systems and equipped with the state-of-the-art, efficiency-optimised technology.
It converts the DC voltage that is given off by the solar generators into grid-conformant alternating current and feeds it into the public power grid, three-phase. The HSI500 / HSI640 is comprised of a 500 kW / 640 kW central inverter and a control cabinet. The HSI1000 and HSI1250 are comprised of two 500 kW / 640 kW central inverters and a control cabinet. The central inverter is only intended for connection to the IT network.
Description Components
HSI500 1x 500 kW power element and 1x control cabinet
HSI640 1x 640 kW power element and 1x control cabinet
HSI1000 2x 500 kW power element and 1x control cabinet
HSI1250 2x 640 kW power element and 1x control cabinet
The HSI500 / HSI640 is a three-phase central inverter for grid-coupled photovoltaic systems.
The HSI500 / HSI640 is comprised of two cabinets, a central inverter and a control cabinet. From left to right: DC switch disconnector Q1, interference suppression filter (EMC), DC connection with IGBT bridge, interference suppression filter and the grid contactor K1.
The HSI1000 / HSI1250 is a three-phase central inverter for grid-coupled photovoltaic systems.
The HSI1000 / HSI1250 is comprised of three cabinets, two central inverters and a controlcabinet. From left to right: DC switch disconnector Q1, interference suppression filter (EMC), IGBT bridge, interference suppression filter and the grid contactor K1.
The display is used to show status data, to reset error messages, and to switch the central inverter on and off. The display and control functions of the display run parallel to the software interface.
3.4.4 Emergency stop switch
In an emergency the central inverter can be immediately disconnected from the grid (AC) and from the solar generator (DC) (See "Emergency stop switch" on page 56).
DANGER!
Life-threatening danger due to residual voltage.
• Strictly maintain a minimum wait time of 30 minutes after switching off and prior to opening the central inverter!
• Prior to performing tasks on the central inverter use a suitable tool to ensure that residual voltage is not present.
right HSI1000 / HSI 1250, with and without the display option)
Optionally, two heating elements can be installed on the inside of the door. In addition, there are two thermostats and a hygrostat in the control cabinet.
The values are set at the factory and may not be changed:
• -BT1 -5 °C,
• -BT2 +5 °C,
• -BT3 > 90 % relative humidity.
The heating elements switch on automatically as soon as the temperature falls below 5 °C or the relative humidity exceeds 90 %. If the temperature falls below -5 °C the power supply of the control card is switched off. The heating elements remain switched on. If the temperature exceeds -5 °C, the power supply of the control card is automatically switched on again.
NOTICE!
Warning against damage to the HSI500 / HSI640 / HSI1000 / HSI1250.
The values of the thermostats and of the hygrostats should not be adjusted.
4 Transport and the necessary conditions at the installation site
4.1 Packaging
Unless otherwise agreed, the packaging satisfies the HPE packaging guidelines that have been specified by the German Associations for Wooden Materials, Pallets, Export Packaging (Bundesverband Holzmittel, Paletten, Exportverpackung e. V).
4.2 Transport
4.2.1 General instructions
Check the delivery immediately after it arrives for completeness and possible transport damage. If the delivery is incomplete contact Helios Systems.
Only transport the inverter cabinet with an industrial truck. The control cabinet is supplied with transport eyes and can be transported using a crane or an industrial truck.
Use suitable transport equipment appropriate for the local conditions. Comply with the information in sections “Obligations of the crane operator" on page 10 and “Obligations of the industrial truck operator" on page 11 in this regard.
DANGER!
Life-threatening danger due to the HSI500 / HSI640 / HSI1000 / HSI1250 tipping over.
• Only transport the inverter cabinet of the HSI500 / HSI640 / HSI1000 / HSI1250 using an industrial truck with sufficient load-bearing capacity.
• Only transport the control cabinet of the HSI500 / HSI640 / HSI1000 / HSI1250 using a crane or industrial truck with sufficient load-bearing capacity.
• The HSI500 / HSI640 / HSI1000 / HSI1250 may only be transported by authorized, qualified personnel trained in the operation of industrial trucks and cranes.
NOTICE!
Improper transport can damage the device.
• Only transport the devices HSI500 / HSI640 / HSI1000 / HSI1250 in an upright position in order to prevent damage.
Transport and the necessary conditions at the installation site
Only remove the transport safeguards when the HSI500 / HSI640 / HSI1000 / HSI1250 is standing vertically at the intended installation site.
4.2.2 Crane transport
Transport eyes in accordance with DIN 580 are provided for loading the control cabinet of the HSI500 / HSI640 / HSI1000 / HSI1250. The following permissible total loads apply for systematic load:
• At 45° cable angle 4800 N
• At 60° cable angle 6400 N
• At 90° cable angle 13600 N
DANGER!
Life-threatening danger due to falling loads.
Falling loads can cause fatal injuries.
• Only use the permissible lifting devices to lift loads.
• Ensure that no one is in the danger zone of the suspended load.
• Wear appropriate protective work clothing.
DANGER!
Life-threatening danger if the wrong lifting devices are used.
Use of the wrong lifting devices can cause severe or fatal injuries.
• When lifting the control cabinet of the HSI500 / HSI640 / HSI1000 / HSI1250, only use the permissible lifting devices (weight of the respective device: See "Technical data" on page 25).
Transport and the necessary conditions at the installation site
Warning against damage from improper transport safeguards.
Improper transport safeguarding can result in damage to the HSI500 / HSI640 / HSI1000 / HSI1250.
• For transport on a truck or trailer the HSI500 / HSI640 / HSI1000 / HSI1250 must be properly lashed. The truck or trailer must have lashing eyes.
• Trained, specialised personnel that meet the requirements specified in regulations VDI 2700 and VDI 2703 must load the central inverter. The correct dimensioning and implementation of load securing measures must be specified on a case-by-case basis.
• To lash the HSI500 / HSI640 / HSI1000 / HSI1250, fasten the ratchet strap on the lashing eyes of the equipment and the lashing eyes of the landing surface.
• Tighten the ratchet strap with the tensioning device.
Transport and the necessary conditions at the installation site
The HSI500 / HSI640 / HSI1000 / HSI1250 may only be operated in an IT network. The connection of two or more inverters to an IT network is not permitted.
NOTICE!
Ensure that the rotary field is correct.
The rotary field must be clockwise. If this is not the case the central inverter will not establish a connection to the public grid.
Transport and the necessary conditions at the installation site
The following connection cables must be present, prepared, and secured:
• Solar generator connection,
• Grid connection,
• Auxiliary voltage connection,
• Communication connection.
4.4 Foundation
The foundation must be able to support the weight of the HSI500 / HSI640 / HSI1000 / HSI1250 and the transport device.
The foundation must be level, stable, slip-resistant, and fire resistant.
DANGER!
Life-threatening danger due to high voltage.
Protect cables and lines against mechanical influences.
• All cables and lines must be protected by a highly flexible plastic protective hose.
• Offload the plastic protective hose on both ends with catching clamps to relieve the hose from pull and pressure.
• Fit a marked pull-in aid (not metal) on each plastic protective hose.
• Ensure that the cables and lines are introduced into the central inverter and control cabinet from below. In this regard at least protection class IP20 must be ensured.
DANGER!
Life-threatening danger due to defective lines and cable.
• Comply with the specified bend radii.
• Offload the plastic protective hose on both ends to relieve the hose from pull and pressure.
• Only route one cable through each cable gland.
• Ensure that the diameter of the cables and lines match the diameters of the cable glands and threaded unions.
Transport and the necessary conditions at the installation site
The HSI500 / HSI640 / HSI1000 / HSI1250 must be easily accessible for operation and maintenance. In this regard the following distances must be maintained:
• Front: 500 mm minimum with open door.
• The HSI500 / HSI640 / HSI1000 / HSI1250 requires a minimum distance of 50 mm to the side and rear.
Fig.4-2 Distances with open door
(left HSI1000 / HSI1250; right HSI500 / HSI640)
min 50 mm
min 500 mm
min 50 mm
min
50
mm
min 50 mm
min 500 mm
min 50 mm
min
50
mm
HSI1000 / HSI1250 HSI500 / HSI650
Transport and the necessary conditions at the installation site
The central inverter must be set up on a foundation that ensures that sufficient air can be suctioned in. The suctioned air is distributed in the interior of the central inverter by fans. The central inverter circulates the air with three small fans in the doors and two large radial fans in the cover. The air is suctioned in from below and blown out on the top side of the central inverter.
The required air quantity, the air quality and the protection class must fulfil the requirements in section “Technical data" on page 25.
DANGER!
Life-threatening danger due to flammable or explosive gasses.
• Ensure that the ambient air is free of flammable or explosive gasses.
DANGER!
Life-threatening danger due to corrosive substances.
• Ensure that the ambient air is free of corrosive substances.
NOTICE!
Warning - damage or overheating of the HSI500 / HSI640 / HSI1000 / HSI1250.
Insufficient cooling air for the HSI500 / HSI640 / HSI1000 / HSI1250 can lead to damage or overheating.
Ensure that sufficient cooling air is available at the installation site.
Transport and the necessary conditions at the installation site
The control cabinet must be set up on a foundation that ensures that sufficient air can be suctioned in. The suctioned air is distributed in the interior of the control cabinet by fans. The control cabinet circulates the air with fans in the cover. The air is suctioned in from below and blown out on the top side of the control cabinet.
The required air quantity, the air quality and the protection class must fulfil the requirements in section “Technical data" on page 25.
4.7 Ambient variables
The protection class must meet the specifications in section “Technical data" on page 25.
3. Route the cable to the connection area from below.
4. Check the cable feeds of the grid connection for damage.
Fig.5-2 AC power switch Q2
5. The cable lugs must be configured for fastening with M12 screws. Route the cable lugs to the correct contactor inputs. The colour sequence is as follows, from left to right (tightening torque: 80 Nm).
The inverter cabinet is positioned to the left of the control cabinet. An additional converter cabinet is positioned to the right of the control cabinet for the HSI1000 / HSI1250.The left half of the control cabinet contains the following cable connections for the HSI500 / HSI640 / HSI1000 / HSI1250:
For the HSI1000 / HSI1250 the right half of the control cabinet contains the following additional cable connections:
HSI500 / HSI640 / HSI1000 / HSI1250
X1A • DC voltage for insulation monitor• AC voltage L1, L2 and L3 for AC voltage measurement• Supply voltage for roof fan
X3A • Q1 and K1 feedback• Overvoltage protection• Control signal for roof fan
X5A Control for intermediate circuit fans in the door and/or rear wall
X20A Q1 and K1 control
X13A 230 V supply voltage for the optional heating elements.
PE Screw the green-yellow PE cable on the mounting plate with 8 Nm.
Drive cable
DC measurement line
HSI1000 / HSI1250
X1B • DC voltage for insulation monitor• AC voltage L1, L2 and L3 for AC voltage measurement• Supply voltage for roof fan
X3B • Q1 and K1 feedback• Overvoltage protection• Control signal for roof fan
X5B Control for intermediate circuit fans in the door and/or rear wall
X20B Q1 and K1 control
X13B 230 V supply voltage for the optional heating elements.
PE Screw the green-yellow PE cable on the mounting plate with 8 Nm.
All connections between the inverter and the control cabinet were disconnected for transport. In the following an explanation on the basis of a control cabinet for the HSI1000 and 1250 is provided for which cables must be connected in order to ensure correct operation. The respective connections are only provided once in the control cabinet of the HSI500 or HSI640.
Fig. 5-4 Control cabinet connections
1 Ethernet connection
2 D-SUB plug connector
3 Plug connectors for periphery
4 Potential equalisation screws
5 Auxiliary transformer -T1
6 Terminal strip X9
Points 1 to 4 are provided twice. The left inverter is connected to the left and the right inverter is connected to the right.
5.3.1 Internal connections between central inverter and control cabinet
Fig.5-5 View of control cabinet with connected connections
1. Guide the cable through the provided opening from the inverter to the control cabinet.
2. Connect the D-SUB plug connections to the connections (2, see page 47) and screw them onto the control card.The D-SUB plug connections serve for the control of the power elements and, therefore, are of considerable importance for the correct operation of the inverter.The D-SUB plug connectors X104 to X105 serve for the control of the power stages. The plug X103 includes the Idc input current.
3. Then connect the five plug connectors for the periphery to the connections (3, see page 47) by plugging the respective plug connector into the terminal strip.
4. Fasten the green-yellow PE wire to the potential equalisation using the screw (4, see page 47).
The supply, feedback and communication lines are connected to the control cabinet as external connections.
1. There are two different possibilities for connecting the external voltage supply. Both possibilities are achieve through the terminal strip X9 (6, see page 47).
• The inverter is supplied directly from the 270 / 300 V IT network. For this purpose, the connection takes place at terminals 1 and 2 of the terminal strip X9. The voltage is converted to 230 V TN using the auxiliary transformer -T1 (5, see page 47).
• The inverter is operated directly with a supply voltage of 230 V TN. Connect the supply to the terminals 6 to 8 of the terminal strip X9 (6, see page 47).
Fig.5-6 Terminal configuration of the connection X9.
DANGER!
Life-threatening danger from missing overload / lightning protection.
No lightning / overvoltage protection is installed for the communication lines.
If the lines should leave the building in which the HSI500 / HSI640 / HSI1000 / HSI1250 is located, appropriate lightning protection must be installed by an authorized electrician.
NOTICE!
Material damage from improper routeing of cable.
Use the available wiring conduit to route the cable within the control cabinet.
2. The data communication between the inverter and the monitoring system takes place through the Ethernet interface of the control cabinet (HSI500 / HSI640 each have one and the HSI1000 / HSI1250 each have two Ethernet connections).Connect the Ethernet cable to the Ethernet connection (1, see page 47). For further information about the monitoring system, the latest version is available for download at www.helios-systems.net.
3. Every inverter has zero potential signal and control contacts which can be used as necessary.
1. The central inverter must be connected on the DC main supply.
2. The central inverter must be connected on the AC main supply.
3. Measure the DC voltage. The polarity must correspond to the plus/minus markings, and the measured values must be within the tolerances (see section “Technical data" on page 25).
4. Switch on all DC power switches.
5. Measure the grid voltage AC from phase to phase.
The measured values must be within the tolerances (see section “Technical data" on page 25).
DANGER!
Life-threatening danger due to high voltage.
Observe the safety instructions affixed to the HSI500 / HSI640 / HSI1000 / HSI1250 and in this operating manual.The HSI500 / HSI640 / HSI1000 / HSI1250 may only be commissioned by qualified electricians who have been trained and authorized.
DANGER!
Life-threatening danger due to high voltage.
Ensure that
• the central inverter is de-energized,
• the slide switch on the DC switch disconnector Q1 is in position “Auto”,
• the emergency stop switch is pressed,
• all cables and lines are undamaged, correctly connected and in faultless condition,
• the threaded unions on all connection rails and terminal strips have the correct tightening torque.
DANGER!
Life-threatening danger due to high voltage.
Only take measurements with appropriate measurement devices.
After commissioning, the central inverter runs through operating states described below.The parameters that cause the central inverter to change to a certain operating state are prescribed.
7.1 Standby
If the solar generator voltage is below Umpp min, the central inverter switches to "Standby" mode. The central inverter is connected to the grid via the grid contactor K1.
7.2 Start up
If the solar generator voltage increases to 50 V above Umpp min, infeed mode is started. If the solar generator current falls below the minimum value, infeed mode switches off for 30 seconds. If the solar generator voltage increases to 50 V above Umpp min, infeed mode is switched on again. If the solar generator current is continuously above the minimum value, the central inverter is in normal mode and infeed is continuous. Start-up can require various attempts; if necessary, a pause of a few minutes must be observed after several attempts.
7.3 MPP mode
Thanks to the Maximum Power Point Tracker (MPPT) the solar power of the solar generator is optimally used. The MPPT is comprised of the continuous MPPT and the cyclical MPPT.
The continuous MPPT varies the solar generator voltage in small increments, and determines the solar generator power after each increment. In this process the continuous MPPT always the tracks the path of optimal solar generator power.
The cyclic MPPT scans a defined voltage range in large increments. This takes place several time each day.If the cyclic MPPT has found the solar generator voltage with the greatest solar generator power, the continuous MPPT takes over this solar generator voltage for further tracking.
7.4 Shutdown
If the solar generator current drops below the minimum value, initially only the infeed operation is switched off. If the solar generator voltage drops below Umpp min, the central inverter is disconnected from the grid by opening the grid contactor K1.
Fault monitoring is active in each operating state. If a fault occurs, all functions of the central inverter will be stopped automatically. An error message will be shown on the display. If the cause of the fault is eliminated, the central inverter returns to "Standby" mode after a wait time.
Press the emergency stop switch to shut down the central inverter in an emergency.After unlocking the emergency stop switch the central inverter will resume operation after a brief wait time.
8.2 Switching off the control voltage
If there is an internal power supply the control voltage must be switched off on the automatic circuit breaker F7.
If there is an external power supply the control voltage must be switched off outside of thecentral inverter.
DANGER!
Life-threatening danger due to residual voltage.
• Strictly maintain a minimum wait time of 30 minutes after switching off and prior to opening the central inverter!
• Prior to performing tasks on the central inverter use a suitable tool to ensure that residual voltage is not present.
NOTICE!
Only activate the emergency stop switch in an emergency.
In an emergency the emergency stop switch immediately disconnects the central inverter from the power supply (AC) and from the solar generator (DC). Only once the dangerous situation has passed and potential faults have been eliminated may the emergency stop switch be unlocked by pulling it out again.
1. Switch off the HSI500 / HSI640 / HSI1000 / HSI1250 (see section “De-commissioning" on page 56).
DANGER!
Life-threatening danger due to high voltage.
The HSI500 / HSI640 / HSI1000 / HSI1250 may only be maintained by qualified electricians who have been trained and authorized.
• Using suitable tools, ensure that the HSI500 / HSI640 / HSI1000 / HSI1250 has been switched off and de-energised.
• Always work with a second person near you.
NOTICE!
Warning - damage to the central inverter.
Improper repair work can cause damage to the central inverter.
All repair tasks should be performed by employees of Helios Systems.
DANGER!
Life-threatening danger due to residual voltage when performing maintenance tasks on the outer area.
For all work near the HSI500 / HSI640 / HSI1000 / HSI1250
• Maintain the safe distance to the HSI500 / HSI640 / HSI1000 / HSI1250 that must be complied with in accordance with BGV A3 (see Table 4/BGV A3 "Safety distances for non-electrical work depending on the rated voltage")!
DANGER!
Life-threatening danger due to residual voltage when performingmaintenance tasks in the interior.
• After switching off the central inverter, observe a minimum waittime of 30 minutes before opening, without fail!
• Prior to opening the central inverter use a suitable tool to ensure that residual voltage is not present.
1. Check the output voltage of the internal 24 V power supply. The DC output voltage of the 24 V power supply unit should be 24 V +/- 0.5 V. Use a multimeter.
2. Check the accuracy of the AC measured values. The alternating current ofphases L1, L2 and L3 are shown on the display. Compare these display values with the values measured by the voltmeter. The accuracy should be +/-2.5 %.
3. Close the front door.
4. Switch on the HSI500 / HSI640 / HSI1000 / HSI1250 (See "Commissioning" on page 52).
DANGER!
Life-threatening danger due to residual voltage.
• After switching off the central inverter, observe a minimum waittime of 30 minutes before opening.
• Prior to opening the central inverter use a suitable tool to ensure that residual voltage is not present.
• Only take measurements with measurement devices intended for this purpose.
WARNING!
Danger of pinching when closing the front door.
When closing the front door, ensure that bodily extremities (hands, fingers) do not get caught in the closing edges.
The HSI500 / HSI640 / HSI1000 / HSI1250 contains electrical components and metal.
Final and professional decommissioning and/or disposal of the HSI500 / HSI640 / HSI1000 / HSI1250 must be executed under the applicable statutory regulations of the country of use.Please observe the special regulations for electronics and electrical equipment, in particular.
The HSI500 / HSI640 / HSI1000 / HSI1250 has been manufactured in accordance with the applicable EC Directive 2002/95/EC on the Restriction of the use of certain Hazardous Substances in Electrical and Electronic Equipment (RoHS).
No solder points contain lead, thus there are no hazardous substances. Separate disposal is not necessary.
The waste management company is responsible for the correct coding and description of its waste.
DANGER!
Life-threatening danger due to residual voltage.
The HSI500 / HSI640 / HSI1000 / HSI1250 may only be disassembled and disposed of by qualified electricians who have been trained and authorized.
Electrolytic capacitors are in the intermediate circuit, in the 24 V power supply unit and in other electronic components.
Comply with the regulations for disposal of special waste, in particular. The regulations issued by government agencies apply, particularly the regulations associated with the European Waste Catalogue.
WARNING!
Warning - harmful to health.
The electrolytic capacitors contain ethylene glycol that is considered to be an irritant and harmful to health.
Wear protective goggles.
Wear suitable protective clothing.
• If there is contact seek medical attention immediately.
• If there is eye contact rinse eyes with water for at least 10 minutes.
• If swallowed drink plenty of water.
• Only induce vomiting if the affected person is fully conscious.
• Take off contaminated clothing immediately and remove it safely.
• If the case of skin contact wash off immediately with plenty of water.
CAUTION!
Environmental damage is possible because ethylene glycol poses a slight hazard to water.
The ethylene glycol from the electrolytic capacitors should not get into soil or ground water.
If a fault occurs during operation, the HSI500 / HSI640 / HSI1000 / HSI1250 goes into the “Stop” mode (see section “Operating states" on page 54). An error code and its description in English will appear on the display.
DANGER!
Life-threatening danger due to high voltage.
Faults on the HSI500 / HSI640 / HSI1000 / HSI1250 may only be corrected by qualified electricians who have been trained and authorized.
Error code Description Possible cause
Temperature
A high ambient temperature can increase the temperature in the interior of the HSI500 / HSI640 / HSI1000 /
HSI1250 and impair normal operation.
Keep the ambient variables of the HSI500 / HSI640 / HSI1000 / HSI1250 in the range of the data cited in section
“Technical data" on page 25.
11 Temperature inverter phase L1, HW driver
12 Temperature inverter phase L1, software Temperature IGBT L1 > 90 °C, ventilation
ok?
13 Temperature inverter phase L2, HW driver
14 Temperature inverter phase L2, software Temperature IGBT L2 > 90 °C, ventilation
ok?
15 Temperature inverter phase L3, HW driver
16 Temperature inverter phase L3, software Temperature IGBT L3 > 90 °C, ventilation
ok?
18 Temperature, ambient Ambient temperature > 50 °C
21 Temperature, control card Ambient temperature > 50 °C
Overvoltage
31 Overcurrent inverter phase L1, HW driver Excessive phase current
32 Overcurrent inverter phase L1, HW control
card
Excessive phase current
33 Overcurrent inverter phase L1, software Phase current L1 > 400 A
34 Overcurrent phase L1, software Grid current L1 > 180 A
35 Overcurrent inverter phase L2, HW driver Excessive phase current