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Digital Power Meter
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Accura 3550
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Display | ||||
Shows real–time measurement data on the FND display screen | ||||
Voltage | ||||
Line–to–neutral voltage, Line–to–line voltage, Fundamental frequency, Harmonics, Phasor diagram, THD1 | ||||
Symmetrical components(positive–, negative–, zero–sequence),Voltage unbalance based on symmetrical components, voltage unbalance according to the NEMA standard, Residual voltage |
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Current | ||||
Phase current, Fundamental frequency, Harmonics, Phasor diagram, THD1, TDD2 | ||||
Symmetrical components(positive–, negative–, zero–sequence), Current unbalance based on symmetrical components, Current unbalance according to the NEMA standard, Residual current |
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Power | ||||
Active, Reactive, and Apparent power | ||||
Power Quality | ||||
Voltage / Current harmonics | Magnitude of each harmonic up to the 50th order, THD, Current TDD, Crest factor, K–factor | |||
Unbalance(voltage/current) | Unbalance according to the NEMA standard, Negative–/zero–sequence unbalance based on symmetrical components | |||
Phasor | Voltage and current phasor | |||
Waveform
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Voltage and current waveforms | |||
One cycle of a waveform(64 samples/cycle) | ||||
Events | ||||
Detects Fuse fail, Phase open, and Blackout events | ||||
Detects Over–temperature events | ||||
Max. number of event logs | 50 | |||
Aggregation of Measurement Data | ||||
Aggregation intervals | Fixed intervals | Supports 6 fixed intervals(1 and 5 seconds, 1 and 5 minutes, 1 and 6 hours) | ||
Measurement data
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Average value | Average value of the values measured for 0.2 seconds | ||
Max/Min value | Max/Min value of the values measured for 0.2 seconds | |||
IO Modules(selectable when ordering the basic module) | ||||
DC module: 1 DC voltage input channel,2 DC current input channels,4 digital input channels,1 digital output channel | ||||
DIO module: 8 digital input and 2 digital output channels | ||||
DI module: 12 digital input channels | DO module: 6 digital output channels | |||
AI module: 6 analog input channels | AO module: 6 analog output channels | |||
A4D2 module: 4 analog output and 2 digital output channels | A2D4 module: 2 analog output and 4 digital output channels | |||
RTD module: 3 RTD input channels | ELD module: 6 leakage current input channels and 1 digital output channel | |||
External Communication with the Host System | ||||
Ethernet communication3
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Communicates with the host system using the Modbus TCP protocol at 100 mbps | |||
Transfers a large amount of measurement data to the host system at high speeds | ||||
The 2 ports allow for Ethernet connection between Accura 3550 devices. | ||||
Wiring: Star, Daisy–chain, Ring connections (RSTP support4) | ||||
RS–485 communication | Communicates with the host system using the Modbus RTU protocol6 at 1,200 – 115,200 bps | |||
Power Supply | ||||
Power supply voltage | AC 100 – 240 V 50/60 Hz, DC 100 – 300 V | |||
Power Consumption | ||||
IO module not connected | 6 W | |||
2 IO modules connected | 12 W |
Accura 3550 comes with various IO modules that can be easily connected to the back of the device. Up to four modules can be attached regardless of connection sequence, and the same types of modules can be redundantly connected. |
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Model | Number of Channels | Specifications | Power Consumption | |
Accura 3550 DC module
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DC voltage input | 1 | 0 – 200V | 2.0 W |
DC current input | 2 | –100 – 100 mV(shunt resistance required) | ||
Digital input | 4 | Internal DC 24 V power supply(Self excitation), redundant circuits | ||
Digital output 1 | 1 | Dry contact(external excitation) | ||
Accura 3550 DIO module
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Digital input | 8 | Internal DC 24 V power supply(Self excitation), redundant circuits | 2.2 W |
Digital output 1 | 2 | Dry contact (external excitation) | ||
Accura 3550 DI module | Digital input | 12 | Internal DC 24 V power supply(Self excitation), redundant circuits | 3.2 W |
Accura 3550 DO module | Digital output 1 | 6 | Dry contact (external excitation) | 0.4 W |
Accura 3550 AI module | Analog input | 6 | DC 0 – 20mA | 0.6 W |
Accura 3550 AO module | Analog output2 | 6 | DC 4 – 20mA, DC 0 – 20mA | 3.6 W |
Accura 3550 A4D2 module
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Analog output2 | 4 | DC 4 – 20mA, DC 0 – 20mA | 2.6 W |
Digital output 1 | 2 | Dry contact(external excitation) | ||
Accura 3550 A2D4 module
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Analog output2 | 4 | DC 4 – 20mA, DC 0 – 20mA | 1.7 W |
Digital output 1 | 4 | Dry contact(external excitation) | ||
Accura 3550 RTD module | RTD input | 3 | PT100, PT1000 4–wire, 3–wire, 2–wire module | 0.8 W |
Accura 3550 ELD module |
Leakage current input | 6 | AC 0 – 2,000mA | 0.7 W |
Digital output 1 | 1 | Dry contact(external excitation) | ||
Operation | ||||
Digital input detection cycle | 1 msec | |||
Analog input detection cycle | 1 msec | |||
Analog output(measurement) control cycle | 200 msec | |||
Analog output(communication) control cycle | 20 msec | |||
Power Supply | ||||
Receives power from Accura 3550 |
Voltage Input | |||
Port name | V1, V2, V3, VN | ||
Connector type | Terminal block1 | ||
Wire specification | 1 – 2.5 mm2(18 – 14 AWG), copper or aluminum | ||
Wire temp rating | Above 70 ¢ªC | ||
Measurement catagory | III | ||
Withstand voltage | AC 2,000 V RMS, 60 Hz for 1 minute | ||
Impedance | 10 MΩ/phase | ||
Burden | 0.01 VA/phase @ 220 V | ||
Wiring method | 3P4W, 3P3W, 1P3W, 1P2W | ||
Current Input | |||
Port name | 1S, 2S, 3S ports on the power supply side, 1L, 2L, 3L ports on the load side(internal busbar) | ||
Connector type | Terminal block2 | ||
Wire specification | 2.1 – 6.0 mm2(14 – 10 AWG), copper or aluminum | ||
Wire temp rating | Above 70 ¢ªC | ||
Rating Input | 5 A nominal/10 A full scale 3~ continuous, per UL61010, 100A for 1 second(thermal) | ||
Burden | 0.01 VA/phase @10 A | ||
Basic Measurement | |||
Frequency measurement | Measuring range | 42 – 69 Hz(50/60 Hz) | |
Basic measurement | Measurement cycle(gapless) | 0.2sec(12 cycles @60Hz, 10 cycles @50Hz) | |
Voltage
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Sampling | 512 samples/cycle | |
Measuring range(accuracy guaranteed) |
35 – 300 V Line–to–line | ||
60 – 500 V Line–to–neutral | |||
Accuracy | ±0.2 % Reading | ||
Minimum measured value | 5 V Line–to–neutral(based on the secondary voltage of the PT when external PTs are connected) | ||
Measurement data
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Line-to–neutral, Line–to–line voltage | ||
Fundamental, Harmonics(up to the 50th order)3 | |||
Phasor, THD | |||
Symmetrical components(positive–, negative–, zerosequence components) | |||
Unbalance according to symmetrical components/ the NEMA standard | |||
Residual voltage
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Measuring method | Calculation of the sum of sampled three–phase line–to–neutral voltages | |
Measurement data | RMS, Fundamental | ||
Accuracy / Operating range | ±0.2% Un4 / Up to 300 V Line–to–neutral | ||
Current
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Sampling | 256 samples/cycle | |
Measuring range(accuracy guaranteed) | 1 % In – 200 % In5 | ||
Accuracy | ±0.2% Reading | ||
Minimum measured value | 0.1 % In | ||
Measurement data
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Phase current | ||
Fundamental, Harmonics(up to the 50th order) | |||
Phasor, THD, TDD | |||
Symmetrical components(positive–, negative–, zerosequence components) | |||
Unbalance according to symmetrical components/ the NEMA standard | |||
Residual current
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Measuring method | Calculation of the sum of sampled three–phase currents | |
Measurement data | RMS, Fundamental | ||
Accuracy / Operating range | ±0.2% In / Up to 200 % In of phase current | ||
Power
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Accuracy of active power | IEC 61557–12 Class 0.5 | |
Accuracy of reactive power | IEC 61557–12 Class 1 | ||
Accuracy of apparent power | IEC 61557–12 Class 0.5 | ||
Energy
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Active
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Accuracy | IEC 62053–22 Class 0.5S |
Type of energy | Received, Delivered, Net, Sum(total) energy | ||
Reactive
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Accuracy | IEC 62053–24 Class 0.5S | |
Type of energy | Energy in quadrant 1, 2, 3 and 4 | ||
Apparent | Accuracy | IEC 61557–12 Class 0.5 | |
Demand
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Current, Apparent power6, Active power | Demand, Peak demand, Predicted demand7 | |
Demand time setup | Demand time = Demand sub–interval * the number of demand sub–intervals | ||
IO Module Control | |||
Module control
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Maximum number of connectable modules: 2 | ||
Automatically detects the connection status of modules and performs the module ID setup function | |||
Collects measurement and status data from connected IO modules | |||
External Communication with the Host System | |||
Ethernet communication
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Protocol | Modbus TCP Protocol | |
Port | 2 ports, Ethernet switching8 | ||
Connector type | RJ45 connector | ||
Communication cable | Ethernet cable Cat 5e FTP, STP, SFTP9 | ||
Cable length | Up to 100 m | ||
Communication speed | 100 Base–TX(100 Mbps/Full Duplex) | ||
Wiring mode | Star, daisy chain, ring topology(RSTP support)10 | ||
Max. number of connected modules | 20 | ||
RS–485 communication
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Protocol | Modbus TCP Protocol | |
Port | 1port/Ta, Tb | ||
Connector type | Push In conductor | 0.13 – 1.5 mm2 (26 – 16 AWG) | |
Communication cable | UL2919 RS–485 1P/2P 24 AWG | ||
Cable length | Up to 1,219 m (4,000 ft) | ||
Communication speed | 1,200 – 115,200 bps11 | ||
Max. number of connected modules | 32 per bus11 | ||
Power | |||
Port name | L+, N– | ||
Connector type | Screw–type terminal(pluggable) | ||
Wire specification | 0.2 – 4.0 mm2 (24 – 12 AWG), copper or aluminum | ||
power supply voltage(Us) | AC 100 – 240 V 50/60Hz, DC 100 – 300 Vdc | ||
Frequency | 50/60 Hz | ||
Operating voltage range | 0.9 x Us – 1.1 x Us | ||
Withstand voltage | AC 2,000 V RMS, 60Hz for 1 minute | ||
Operating environment | Pollution degree 2 | ||
Power Consumption
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6 W | IO module not connected | |
12 W | 2 IO modules connected | ||
Inrush current11
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Peak 22 A, duration less than 1 msec(AC 220 V) | ||
Peak 11 A, duration less than 200 ¥ìsec(DC 110 V) |
DC 0–20mA Analog Input | |||
Item | Description | ||
Connector type | Screw–type terminal(Pluggable) | ||
Wire specification | 0.21 – 3.5 mm2 (24 – 12 AWG), max 0.5 Nm (5 kgf–cm, 4 Ibf–in) | ||
Input type | Dry contact(external excitation) | ||
Input type | DC current 0 – 20 mA | ||
Internal input resistance | 150 Ω | ||
Accuracy | ±0.5 % Full Scale | Full Scale: 20 mA | |
DC 0–20mA Analog Output | |||
Item | Description | ||
Connector type | Screw–type terminal (Pluggable) | ||
Wire specification | 0.21 – 3.5 mm2 (24 – 12 AWG), max 0.5 Nm (5 kgf–cm, 4 Ibf–in) | ||
Output type | DC Current 0 – 20 mA | ||
Allowable load resistance | Less than 450 Ω | ||
Accuracy | ±0.5 % Full Scale | Full Scale: 20 mA | |
Digital Input | |||
Item | Description | ||
Connector type | Screw–type terminal(Pluggable) | ||
Wire specification | 0.21 – 3.5 mm2 (24 – 12 AWG),max 0.5 Nm (5 kgf–cm, 4 Ibf–in) | ||
Input type | Internal DC 24 V power supply(self–excitation) | ||
Carried current | 1st channel : 10 mA, other channels: 5 mA | ||
Insulation | Max. AC 2000 V for 1 minute | ||
Minimum pulse width | 10 msec | ||
Digital Output | |||
Item | Description | ||
Connector type | Screw–type terminal (Pluggable) | ||
Wire specification | 0.21 – 3.5 mm2 (24 – 12 AWG), max 0.5 Nm (5 kgf–cm, 4 Ibf–in) | ||
Output type | Dry contact(external excitation) | ||
Maximum Rating | AC/DC 240 V 350 mA (max. 1 A)1 | ||
Insulation | Max. AC 2,000 V for 1 minute | ||
Output signal type | Latch, pulse, energy pulse | ||
Minimum pulse cycle | 20 msec | ||
Minimum pulse width | 10 msec |
Accura 3550 DC Module | ||||
DC voltage/current input | ||||
Number of channels | 3 | |||
Port name | IOUT+ IOUT– / IBAT+ IBAT– / VDC+ VDC–5 | |||
DC Shunt resistance | Max. DC 100 mV | |||
DC Voltage | Max. DC 200 V | |||
Accuracy | ±0.5 % Full Scale | |||
Digital Input | Digital Output | |||
Number of channels | 4(redundant circuits per channel)1 | 1 | ||
Port name | DI1 DI2 DI3 DI4 DIG2 | DO DOG | ||
Power Consumption | 2.0 W | |||
Accura 3550 DIO Module | ||||
Digital Input | Digital Output | |||
Number of channels | 8 (redundant circuits per channel)1 | 2 | ||
Port name | DI1 DI2 DI3 DI4 DIG / DI5 DI6 DI7 DI8 DIG2 | DO1 DO1G / DO2 DO2G3 | ||
Power Consumption | 2.2 W | |||
Accura 3550 DI Module | ||||
Digital Input | ||||
Number of channels | 12 (redundant circuits per channel)1 | |||
Port name | DI1 DI2 DI3 DI4 DIG / DI5 DI6 DI7 DI8 DIG / DI9 DI10 DI11 DI12 DIG2 | |||
Power Consumption | 3.2 W | |||
Accura 3550 DO Module | ||||
Digital Output | ||||
Number of channels | 6 | |||
Port name | DO1 DO1G / DO2 DO2G / DO3 DO3G / DO4 DO4G / DO5 DO5G / DO6 DO6G3 | |||
Power Consumption | 0.4 W | |||
Accura 3550 AI Module | ||||
Analog Input | ||||
Number of channels | 6 | |||
Port name | AI1 AI1G / AI2 AI2G / AI3 AI3G / AI4 AI4G / AI5 AI5G / AI6 AI6G4 | |||
Power Consumption | 0.6 W | |||
Accura 3550 AO Module | ||||
Analog Output | ||||
Number of channels | 6 | |||
Port name | AO1 AO1G / AO2 AO2G / AO3 AO3G / AO4 AO4G / AO5 AO5G / AO6 AO6G | |||
Power Consumption | 3.6 W | |||
Accura 3550 A4D2 Module | ||||
Analog Output | Digital Output | |||
Number of channels | 4 | 2 | ||
Port name | AO1 AO1G / AO2 AO2G / AO3 AO3G / AO4 AO4G | DO1 DO1G / DO2 DO2G3 | ||
Power Consumption | 2.6 W | |||
Accura 3550 A2D4 Module | ||||
Analog Output | Digital Output | |||
Number of channels | 2 | 4 | ||
Port name | AO1 AO1G / AO2 AO2G | DO1 DO1G / DO2 DO2G / DO3 DO3G / DO4 DO4G3 | ||
Power Consumption | 1.7 W | |||
Accura 3550 RTD Module | ||||
RTD Analog Input | ||||
Number of channels | a1 A1 B1 b1 / a2 A2 B2 b2 / a3 A3 B3 b3 | |||
RTD sensor | PT100, PT1000 | |||
Wiring method | 4W, 3W, 2W | |||
Accuracy | ±0.5 % Full Scale | Range: –100 to 200 °C, Full Scale: 200 °C | ||
Power Consumption | 0.8 W | |||
Accura 3550 ELD Module | ||||
ZCT Analog Input | Digital Output | |||
Number of channels | 6 | 1 | ||
Port name | Z1 Z1G / Z2 Z2G / Z3 Z3G / Z4 Z4G / Z5 Z5G / Z6 Z6G6 | DO, DOG | ||
Leakage current input | Voltage output type ZCT 200 mA/100 mV @ 1.2 kΩ Burden7 | |||
Accuracy | ±0.5 % Full Scale | 200mA/100mV, Range: 0 – 2 A, Full Scale: 2 A | ||
Power Consumption | 0.7 W |
Environmental Conditions | |||
Installation location | Indoors | ||
Operating temperature | –20 to 70¡É(–4 to 158¢µ) | ||
Safe operating temperature 1 | –20 to 65¡É(–4 to 149¢µ) | ||
Storage temperature | –40 to 85¡É(–40 to 185¢µ) | ||
Operating humidity | 5 – 95%(non–condensing) | ||
Operating altitude | Up to 2,000 m | ||
General | |||
Warranty Period | 2 years |
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102-611, 88, Sin won-ro, Yeongtong-gu, Suwon, Gyeonggi-do, Korea TEL 82 31 695 7350 FAX 82 31 695 7399 COPYRIGHT(C)ROOTECH. ALL RIGHTS RESERVED. |
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