• Digital Power Meter Digital Power Meter Digital Power Meter Digital Power Meter Digital Power Meter • Digital Power Analyzer Digital Power Analyzer Digital Power Analyzer Digital Power Analyzer Digital Power Analyzer • Power Quality Analyzer Power Quality Analyzer Power Quality Analyzer Power Quality Analyzer Power Quality Analyzer R-0EDCI-000MR-C0-05/01 INSTRUMENTS
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• Digital Power MeterDigital Power MeterDigital Power MeterDigital Power MeterDigital Power Meter
••••• Digital Power AnalyzerDigital Power AnalyzerDigital Power AnalyzerDigital Power AnalyzerDigital Power Analyzer
Bridex Singapore Pte Ltd was founded in 1973 as a manufacturer of instruments transformer for
the Asian market. We are the first local electrical switchgear components manufacturer that
launches our own Asian identity – Rudolf.
Today we aim to become a knowledge-based, technology driven engineering organization,
with emphasis on providing solution for electrical distribution and control, in area of instruments,
distribution & protection and standard components. With our present headquarter in Singapore
and subsidiaries that are located in Philippines, China and Australia, we are well equipped to
service both local and Asia-Pacific countries.
Product Introduction
What are the reasons behind an increasing trend toward the use of power meter and power
analyzer? To replace the conventional metering using analogue meter? We take reasons better
than this. With just one product, we achieve consolidated measurement, energy metering,
alarm monitoring, possibility for remote communication, the possibility for control and command
and the possibility for data logging function via sole proprietor software. These possibilities
allow the user to obtain and manage information thereby providing the user with the capability
to control cost, improve power quality and participate in control system (BMS)
These functions can be achieved by your selection of any of RUDOLF:
R-DPM96 - Digital Power Meter
R-DPA96 - Digital Power Analyzer
R-PQA144 - Power Quality Analyzer
R-DPA96R-DPM96 R-PQA144
Corporate Introduction
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Digital Power Meter - DPM96
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Basic Features
OTHER FEATURES• Compact-size (96 x 96 mm), panel-mounting power meter.• True R.M.S. measuring system.• Instantaneous, maximum and minimum values of each measured parameter.• Energy measurement (indication through a lighting LED)• RS-485 type communication to a PC• Harmonic distortion measurement (THD-V & THD-A ).• Active & Reactive Metering.• Maximum 2 user-programmable pulse/alarm outputs are available in DPM 96 power meter to transmit active and reactive
energy information / user-defined threshold overshoots.• Energy Measurement - designed for energy management applications, the DPM 96 power meter can transmit all
information required for electricity billing such as load curves in active or reactive power, active and reactiveenergy to a computer.
• RS 485 or RS 232 Communication - The DPM 96 power meter can be equipped with an RS 485 output or RS 232 output(optional) ModBus RTU protocols to transmit all electrical information in digital form to a computer, PLC, or evena display repeater.
• Software - The DPM96 (model with RS 485 port / RS 232 port) can be used in conjunction with its proprietary software,Easycomm Plus for remote monitoring and display of its electrical parameters, remote modification of its setting, datalogging, to record its designated electrical parameter (programmable time interval, minimum 1 sec).
The DPM 96 is an instrument which measures, calculates and displays all the main electrical parameters atany electrical network (balanced or not). The measuring is true RMS value, through three a.c. voltage inputsand three a.c. current inputs (from Current Transformers .../ 5A).
It was designed according to EMC and electrical safety standards, and manufactured under the ISO 9001quality control. It is featured by its high measuring, its reduced size, an easy assembly mode and a yeteconomical price. It can be integrated into a communication network through its built-in-RS 485 type outputby just using ModBus standard protocol. Two relay outputs are also delivered by the power meter for alarmand /or energy pulses.
User Friendly Interfaces
Voltage (phase-neutral)Voltage (phase-phase)CurrentActive powerReactive power LReactive power CVoltage THDCurrent THDPower factorFrequencyPower demandkWhkvarhLkvarhC
R-Module-1 Plug in module for energy metering± kWh, ± kvarh and kVAh with two programmable pulse outputs
R-Module-2 Plug in module for energy metering + harmonicsI1, I2, I3, U12, U23, U31 and THD U/I up to harmonic no. 15
R-Module-3 Plug in module for communication RS 485 (JBUS/MODBUS protocol)2 or 3-wire RS485 with JBUS/MODBUS protocol, with transmission speed of up to38,400 bauds
R-Module-4 Plug in module for analogue outputs (0/4-20mA)Two configurable 0/4-20 mA analogue outputs
R-Module-5 Plug in module for alarms control/command (2 inputs/ 2 outputs)2 inputs for pulse metering or for input status. 2 outputs for alarm monitoring or outputcommand. The monitoring function allows upper and lower alarm thresholds to beprogrammed for the following parameters: 3I, 3U, In, ±∑P, F, PFL/C, THDI/U with timedelay and hysteresis options.
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Basic Features
Power Quality Analyzer - PQA144
The PQA-144 is an instrument that can be used as a Power Quality Analyzerto support any network connection configuration, such as 3 and 4 Wire, Wye and
Delta, and single-phase. The connection is either direct (up to 347/600 VAC) or
using a Potential Transformer (PT). Minimum burden on the Current Transformers
(CTs) is achieved by connecting the CTs without a physical contact. Delta networks
use 2 or 3 CT’s and Wye networks use 3 or 4 CT’s.
When the system is configured as a Delta network, it displays the L-to-L current and
power, in additional to the line currents and total power. The system measures the
line current from the CTs and calculates the current and power inside the feeder
transformer (or generator). In completely balanced networks, the internal currents
are 1/√3 of the line currents. In many cases, the network is not balanced and the
internal currents are different from these expected.
The unique dual load model is advantageous when monitoring two loads (6 current channels) connected to the same feeder.
The analyzer displays each load separately, as well as their total or deduction.
Typical applications for the dual load model are:
Two Transformers
When two transformers are connected in parallel, the analyzer measures each transformer separately, add their output and
displays one joint measured network, as well as each transformer separately.
Large Loads
Loads on the transformer may include one large load (such as large motor, welder or other machines) and many relatively
small loads. In this situation it is advantagous to monitor the mains and the large load separately.
Connection of the mains to Load1 of the Power Analyzer and the large load to Load2 provides accurate measurements of the
mains, the large load and all other loads.
Typical connection of a single loadpower analyzer in a Wye network
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Basic Features
Power Quality Analyzer - PQA144
Metered Values• True RMS measurements• Ultra rapid, real-time, cycle by cycle measurements, at 128 samples per cycle. Real-time values over 8 through 256
cycles for easy reading• Choice of models ranging from essential measurements only (Volts, currents, frequency and powers) to over 2000
electrical parameters• Min/Max values• Four quadrant readings (power, power factor)• Displays neutral voltage and current
Time-of-Use (TOU)• Time-of-Use information is automatically stored for each predefined period• PowerIQ software calculates electricity costs according to varying tariffs (based on time, season etc.)
Power Quality• Waveform display and capturing, at 128 samples per cycle• Harmonics analysis, up to 63rd harmonic (individual, THD, K and crest factors)• Sag/Swell recording (magnitude, duration and trigger events)
Compliance Monitoring• Compliance monitoring of international power quality standards• These monitoring operate on all product series
(e.g. the harmonics level is tested even if the meter doesn’t include harmonics display)
Logging & Recording• Up to 2048KB of flash memory• High speed data recording for short duration critical events• Logging of over 2000 parameters at scheduled intervals or by set-points• Min/Max recording of key parameters• Logging of setup changes, set-point and power quality events• Precise timestamp synchronized to external GPS (optional)
Input, Output & Relays• On board relay can be controlled automatically by internal set-points• Optional 4 digital inputs and 2 outputs for multiple purposes, such as synchronization to utility meter or to generate
energy pulsing (Wh, VArh and VAh)
Graphic Display & User Interface• Extra large graphic LCD screen• High visibility (FSTN technology)• Bright Backlight• Characters are displayed in varying sizes to enhance visibility from long distances• The user interface offers an easy to use, installation and configuration menu driven operation
Communication• Optional RS-485 or RS-232 communication port• Supported protocol: ElCom protocol - Rudolf’s unique ultra rapid communication protocol and ModBus RTU• Baud rate of up to 115200 BPS• Fully automated baud rate setup
Structure• Allows easy adaptation of the unit to current and future requirements• Easy upgrading of the firmwave (internal software)
Network Types• Supports any network connection configuration (3 and 4 Wire, Wye and Delta, single-phase etc.)• Feeder transformer (or local generator) current and power analysis (see Applications section)• Unique dual load model enables simultaneous analysis of two loads such as parallel-connected transformers, or mains
plus additional load (e.g., large motor, welder, capacitor bank)
Software• User-friendly PC software (PowerIQ)• Includes on-line help for easy use
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Display Screens
Power Quality Analyzer - PQA144
Large Digit Screen
Permits simultaneoues display of 9 parameters: 3 measured values
plus 3 minimum and 3 maximum.
Parameters can be mixed, such as average voltage, current and
power factors. This unique feature allows analysis of the formost
parameters at a glance, without touching the unit. The PU% buttons
displays the values as a percentage from their nominal rating.
When using the dual load model, the readings are on all 3 loads .
Waveform Screen
This large graphic display allows easy monitoring of transients of
130/156µS (at 60/50Hz). The display includes detailed information
for each wave: the type and phase, THD, RMS, peak & bottom
values plus value at cursor position.
When using the dual load model, the readings are on all 3 loads .
Harmonics Screen
The graphic display enables inspection of the harmonics pollution
at a glance. The display includes detailed information for each
harmonic: type, phase, number of the harmonic, the value in
amperes/volts and in percent, the angle and the frequency.
When using the dual load model, the readings are on all 3 loads.
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Detailed analysisof Time-Of-Use(TOU) can bedone using thePowerIQsoftware.
Display Screens
Power Quality Analyzer - PQA144
Mains Menu
Step-by-step installation assistant
Notes:* These detailed display screens are for single load unit with WYE
network configuration* Dual load unit has the same screens for all loads (two or three)* Other configurations have similar screens
Measurement Level1 2 3 4
The screens include automatic default and user-friendly help screen.
Info Screens
Additional event-specific information isdisplayed.
Detailed eventinformation is accessedusing PowerIQ software
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Basic Features - PowerIQ Software
Power Quality Analyzer - PQA144
GeneralThis easy-to-use software displays the system’s status, as well as the measurement results on the numerous screens running
under Windows (95, 98, me, NT and 2000). PowerIQ integrates all Rudolf systems, allowing power quality analysis, cost
allocation, circuit optimization, demand & power factor monitoring. PowerIQ includes real-time measurements, as well as
comprehensive data logging and power quality analysis features. All screens allow customization, printing and exporting of
data. The network version enables complete intranet and internet operation, as well as modem access.
Power Quality Analyzer - PQA144Basic Features - PowerIQ Software
Real-time MeasurementsProvides clearly visible real time values, with minimums and maximums.
Remote Control
Harmonics AnalysisDisplays the harmonics spectrum both as a graph and as atable, in addition to harmonics analysis parameters (THD,K-Factor and Crest-Factor). Compliance monitoring ofinternational power quality standards, such as IEEE-519,allows easy network analysis.
ScopeDisplays waves and their phase shifting, and enablesdetection of existing or potential power quality problems.
Data LoggingEnables comprehensive network analysis by logging over2000 parameters per record. It can be set to record dataeither on pre-defined intervals (from 1 cycle to 99 hours)or according to network events. The recording volumeand time is limited only by the size of the computer’shard disk.
Data MonitoringDisplays the recorded data in either on-line or off-linemode. The on-line mode displays the data whilesimultaneously recording it for maximum power analysiscontrol.
Report GeneratorCreates user-defined or preset reports (such as load profileand power quality) reports. The reports are easily definedusing a word processor (such as Microsoft Word).
Time-of-Use (TOU)Displays the Time-of-Use information stored in the analyzer,in addition to calculation of energy costs, according tovirtually any utility tariff structure.
EventsThe event screen is used for retrieving, monitoring andanalyzing the events information from the analyzer.
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Power Quality Analyzer - PQA144Technical Specification