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Feeder Measurement & Control
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Accura 2500/2550
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Installed at the incoming line of the AC/DC distribution panel, Accura 2500M module performs the main function of the distribution panel. | ||||
Voltage Measurement of the Incoming Line | ||||
Measures voltage by sensing the AC or DC voltage of the incoming line in the distribution panel | ||||
Measurement Parameters | ||||
AC voltage
|
Line-to-neutral voltage, Line-to-line voltage, and Frequency | |||
Fundamental voltage, vector diagram(phasor) | ||||
Harmonics1, THD | ||||
Symmetrical components (positive-, negative-, zero-sequence) | ||||
Unbalance according to symmetrical components/the NEMA standard | ||||
Residual voltage2 | ||||
DC voltage | DC voltage, RMS voltage | |||
Power Quality | ||||
Dip/Swell1 | RMS voltage refreshed each cycle | |||
PQ Curve1 | RMS voltage refreshed each cycle/SEMI F47-0706, IEC 61000-4-11/34 Class 3, and ITIC | |||
Harmonics1 | Harmonics up to the 50th order, THD | |||
Unbalance | Line-to-neutral/Line-to-line voltage unbalance, unbalance based on symmetrical components | |||
Events | ||||
Power quality
events |
Dip/Swell events, PQ Curve events | |||
Up to 100 power quality events can be saved. | ||||
Measurement events
|
Voltage connection events3
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Phase open | Events on failures in voltage connection | |
Fuse fail | Events on fuse failures on the line where voltage is measured | |||
Current events |
Events on current values measured by Accura 2550CM[Z]/CMD/DCM modules | |||
Events for each module can be configured on Accura 2500D¡¯s screen. | ||||
Leakage current events4 |
Events on leakage current values measured by Accura 2550CMZ modules | |||
Events for each module can be configured on Accura 2500D¡¯s screen. | ||||
Voltage events |
Events on voltage values measured by Accura 2550DCM | |||
Events of each meter can be set up on Accura 2500D¡¯s screen. | ||||
Custom events |
Events for which users set event input data and event operations | |||
Users can set up to 40 events via communication. | ||||
Up to 100 measurement events can be saved. | ||||
Internal Communication with Accura 2500D Module | ||||
Dedicated communication | Sends/receives data to/from Accura 2500D with its own protocol | |||
Internal Communication with Accura 2550 Power Measuring Modules | ||||
Dedicated communication
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Sends the AC or DC voltage sampling data on the incoming unit to multiple Accura 2550 modules | |||
Collects data on the measurement and operational status of the device from multiple Accura 2550 modules | ||||
Dedicated internal protocol | ||||
Number of connected modules 5
|
In a single group | Up to 30 | ||
In two groups | Up to 40 | |||
Supports communication redundancy through ring connection using 2 ports in the group 1 & 2 | ||||
External Communication with the Host System | ||||
Ethernet communication
|
Communicates with the host system with Modbus TCP protocol at 100 Mbps | |||
Sends measurement data collected from multiple Accura 2550 modules to the host system | ||||
Supports communication redundancy through ring connection using 2 Ethernet switch ports | ||||
Wiring methods: Star, Daisy-chain, Ring connection (supports RSTP 6 ) | ||||
RS-485 communication
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Communicates with the host system with 1,200 - 115,2007 bps Modbus RTU protocol | |||
Sends measurement data collected from multiple Accura 2550 modules to the host system |
Accura 2500D is installed at the front of the distribution panel. The 5" TFT Color LCD screen on the front of the device provides users with data on Accura 2500M device, as well as measurement and operational status data of multiple Accura 2550 modules via communication. In addition, users can set all functions of Accura 2500M and Accura 2550CM[D/Z] modules through the TFT Color LCD screen of Accura 2500D module, which has the touch function. | ||||
Connection with Accura 2500M | ||||
Combined installation | Accura 2500M can be attached/detached to/from Accura 2500D using its built-in connector. | |||
Connection with a cable | It can be connected with Accura 2500M using an RJ45 communication cable. | |||
Internal Communication with Accura 2500M | ||||
Dedicated communication
|
Sends/ receives data to/ from Accura 2500M via its own protocol | |||
Displays data on Accura 2500M as well as data on measurement and operational status of multiple Accura 2550 modules | ||||
Functions of Accura 2500M and Accura 2550 modules can be set on the Accura 2500D module |
Incoming Circuit / Branch Circuit Power Measurement | |||
Measures various power characteristics based on the current sampling data on the incoming line/branch line and the input voltage data received from Accura 2500M module. | |||
Model | Base Current | ||
CM-3P-800A-210 | 800A | ||
CM-3P-630A-210 | 630A | ||
CM-3P-630A-145 | 630A | ||
CM-3P-400A-145 | 400A | ||
CM-3P-400A-140 | 400A | ||
CM-3P-250A | 250A | ||
CM-3P-125A | 125A | ||
CM-3P-100A | 100A | ||
CM-3P-60A | 60A | ||
CM-3P-5A1 | 5A | ||
CM-1P-250A | 250A | ||
CM-1P-125A | 125A | ||
CM-1P-100A | 100A | ||
CM-1P-60A | 60A | ||
AC Measurement Parameter | |||
Current |
RMS, Fundamental, harmonics, THD, TDD, Vector diagram(phasor) | ||
Crest factor, K-factor | |||
Symmetrical components 2, Symmetrical unbalance 2, Current unbalance 2 | |||
Power | Active power, Reactive power, Apparent power | ||
Energy | Received/delivered active energy, 4-quadrant reactive energy, Apparent energy | ||
Power factor | Power factor, Displacement power factor | ||
Demand |
Current/power demand, peak current/power demand | ||
Predicted current/power demand | |||
Internal Communication with Accura 2500M | |||
Dedicated communication | Receives the voltage sampling data on the incoming unit from Accura 2500M | ||
Events3 | |||
Current events | ¡°Over¡± or ¡°Under¡± event on measured current values |
Branch Circuit Power Measurement | |||
Measures various power characteristics based on the current sampling data on the incoming line/branch line and the input voltage data received from Accura 2500M module. | |||
Model | Basic Current (Ib) | Maximum Current | |
CMD-1P-1500A | 1,500 Adc | 1,800 Adc | |
CMD-1P-750A | 750 Adc | 900 Adc | |
CMD-1P-250A | 250 Adc | 300 Adc | |
CMD-1P-125A | 125 Adc | 150 Adc | |
CMD-1P-100A | 100 Adc | 120 Adc | |
CMD-1P-60A | 60 Adc | 72 Adc | |
DC Measurement Parameter | |||
Current | DC current, RMS current, waveforms | ||
Power | DC power, Rear power | ||
Energy | Received/delivered DC energy, Received/delivered Rear energy | ||
Internal Communication with Accura 2500M | |||
Dedicated communication | Receives the voltage sampling data on the incoming unit from Accura 2500M | ||
Events1 | |||
Current events | ¡°Over¡± or ¡°Under¡± event on measured current values |
Power / Leakage Current Measurement on Incoming and Branch Lines | |||
Measures various power characteristics based on the current sampling data on the incoming line/branch line and the input voltage data received from Accura 2500M module. | |||
Model | Base Current | ||
CMZ-3P-800A-220 | 800A | ||
CMZ-3P-400A-155 | 400A | ||
CMZ-3P-250A | 250A | ||
CMZ-3P-125A | 125A | ||
CMZ-3P-100A | 100A | ||
CMZ-3P-60A | 60A | ||
CMZ-1P-250A | 250A | ||
CMZ-1P-125A | 125A | ||
CMZ-1P-100A | 100A | ||
CMZ-1P-60A | 60A | ||
AC Measurement Parameter | |||
Current |
RMS, fundamental, harmonics, THD, TDD, vector diagram(phasor) | ||
Crest factor, K-factor | |||
Symmetrical components 1, unbalance according to symmetrical components 1, current unbalance1 | |||
Leakage current | Measured by the built-in ZCT | ||
Power | Active power, Reactive power, Apparent power | ||
Energy | Received/delivered active energy, 4-quadrant reactive energy, Apparent energy | ||
Power factor | Power factor, Displacement power factor | ||
Demand |
Current/power demand, Peak current/power demand | ||
Predicted current/power demand | |||
Internal Communication with Accura 2500M | |||
Dedicated communication | Receives the voltage sampling data on the incoming line from Accura 2500M | ||
Events2 | |||
Current events | ¡°Over¡± or ¡°Under¡± event on measured current values | ||
Leakage current events | ¡°Over¡± event on measured leakage current values |
Direct DC Voltage/Current/Power Measurement | |||||
Measures various power characteristics based on the sampled voltage/current data collected by directly sensing voltage/current. | |||||
Model | Basic Voltage | Basic Current | Max Voltage | Max Current | |
DCM-500V-80A | 500 Vdc | 80 Adc | 550 Vdc | 100 Adc | |
DCM-50V-80A | 50 Vdc | 80 Adc | 60 Vdc | 100 Adc | |
DC Measurement Parameters | |||||
Voltage | DC voltage, RMS voltage, waveforms | ||||
Current | DC current, RMS current | ||||
Power | DC power, Real power | ||||
Energy | Received/Delivered DC energy, Received/Delivered Real energy | ||||
Internal Communication with Accura 2500M | |||||
Dedicated communication |
Sends measurement and operational status data to Accura 2500M | ||||
Number of connectedmodules1 |
In a single group | Up to 5 | |||
In two groups | Up to 10 | ||||
Supports communication redundancy via device connections in a ring topology | |||||
Events | |||||
Voltage events | ¡°Over¡± or ¡°Under¡± event on measured voltage values | ||||
Current events | ¡°Over¡± or ¡°Under¡± event on measured current values |
Control Power Supply | |||
Port name | L+, N-, G(Earth ground) | ||
Connector type | Terminal block1 | ||
Wire specs | 2.1 - 3.5 mm2 (14 - 12 AWG), copper or aluminum | ||
Power voltage(Us) | AC 100 - 240 V 50/60Hz , DC 100 - 300 V | ||
Operating voltage range | 0.9 x Us - 1.1 x Us | ||
Power consumption2 | Maximum 20W | ||
Inrush current3 |
Peak 22 A, duration: less than 1 msec(AC 220 V) | ||
Peak 11 A, duration: less than 200 usec(DC 110 V) | |||
Voltage Input | |||
Module | Accura 2500M | Accura 2500M-VD13 | |
Port name | V1, V2, V3, VN | +Vdc, COM, -Vdc | |
Connector type | Terminal block 1 | ||
Wire specifications | 2.1 - 5.0 mm2 (14 - 10 AWG), copper or aluminum | ||
Measurement category | Category III | ||
Measured frequency range | DC, 42 - 65 Hz(50/60 Hz) | ||
Impedance | 10 M¥Ø | 20 M¥Ø | |
Burden |
0.01 VA/phase @AC 220 V | 0.005 W @DC 1,000 V | |
0.001 W @DC 100 V | |||
AC Voltage Measurement | |||
Voltage wiring method | 3P4W, 3P3W, 1P3W, 1P2W | ||
Sampling | 512 samples/cycle | ||
Measurement cycle(gapless)
|
Basic measurement | Frame: 0.2 sec (12 cycle@60Hz,10 cycle RMS @50Hz) | |
Dip/Swell measurement | 1 cycle | ||
Voltage
|
Measuring range (Accuracy ensured) |
AC 35 – 300 V Line-to-neutral | |
Accuracy | IEC 61557-12 Class 0.5 | ¡¾0.5 % Reading | |
Minimum measured value | AC 5 V Line-to-neutral | ||
Measurement data |
Line-to-neutral voltage, Line-to-line voltage | ||
Fundamental, harmonics(up to the 50th order)5 | |||
Vector diagram(phasor), THD, waveforms | |||
Symmetrical components(positive, negative, zero-sequence) | |||
Unbalance according to symmetrical components/the NEMA standard | |||
Residual voltage
|
Measuring method | Calculation of the sum of 3-phase voltage | |
Measurement data | RMS, fundamental | ||
Accuracy/ operating range | ±0.5 % Un 4/Up to 300 V Line-to-neutral | ||
Frequency | Measuring range | 42 - 65 Hz(50/60 Hz) | |
AC Power Quality | |||
Dip/Swell5 | Measured value/Threshold | RMS voltage refreshed every cycle | Threshold set by users |
PQ Curve5
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Measured value/Threshold | RMS voltage refreshed every cycle | Dip/Swell: 90 % / 110 % of Vref |
Curve type | SEMI F47-0706, IEC 61000-4-11/34 Class 3, ITIC | ||
Voltage harmonics5,THD
|
Harmonic order | Up to the 50th order | |
Measurement data | Magnitude of each harmonic, THD | ||
Voltage unbalance
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Measurement data
|
Line-to-neutral voltage / Line-to-line voltage unbalance unbalance according to NEMA standards |
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Zero-sequence unbalance and negative sequence unbalance | |||
DC Voltage Measurement | |||
Module | Accura 2500M | Accura 2500M-VD | |
Wiring method | 1DC2W, 2DC3W, 3DC4W, Bipolar(3W) | 1DC2W, Bipolar(3W), Unipolar(2W) | |
Sampling frequency |
25.60 kHz(sampling cycle 39us) @50Hz mode | ||
30.72 kHz(sampling cycle 33us) @60Hz mode | |||
Measurement cycle (gapless)
|
Basic measurement: Frame 0.2 sec | ||
Dip/Swell measurement: 1 subframe(20 ms @50 Hz mode, 16.7 ms @60 Hz mode) | |||
Measuring range(accuracy guaranteed) | Up to 300 Vdc | Up to 1,000 Vdc (1DC2W, Bipolar(3W)) Up to 2,000 Vdc (Unipolar(2W)) |
|
Max. measuring range | Up to 550 Vdc | Up to 1,200 Vdc (1DC2W, Bipoloar(3W)) Up to 2,400 Vdc (Unipolar(2W)) |
|
Measurement accuracy | ±0.5 % Reading ± 0.05 % Un 12 | ±0.5 % Reading ± 0.05 % Un 12 | |
Minimum measured value | 5 Vdc | 10 Vdc | |
Measurement data | DC voltage , RMS voltage, waveforms | DC voltage , RMS voltage, waveforms | |
DC Power Quality | |||
Dip/swell | Measured value/Threshold | DC voltage refreshed every subframe | Threshold: set by users |
Internal Communication | |||
Type | Communication with Accura 2500D | Communication with Accura 2550 | |
Port | 1 port(DISPLAY) | 2 ports for each group, 4 ports for 2 groups (The ports have the same functions) |
|
Communication cable | Internal communication cable for the display module(Cat.5e 24 AWG FTP)6 | Internal communication cable7 | |
Cable length | Up to 3 m | The total cable length in a group: up to 50 m(each cable: up to 10 m) | |
External Communication | |||
Type | Ethernet communication | RS-485 communication | |
Protocol | Modbus TCP Protocol | Modbus RTU Protocol | |
Port | 2 ports(ETHERNET1, ETHERNET2)8 | 1 port / Ta(TRX+), Tb(TRX-) | |
Connector type | RJ45 connector | Terminal block 1 | |
Communication cable | Ethernet cable Cat 5e FTP, STP, SFTP9 | UL2919 RS-485 1P/2P 24AWG | |
Communication speed | 100Base-TX(100Mbps/Full Duplex) | 1,200 - 115,200 bps10 | |
Wiring method | Star, Daisy-chain, Ring connection (RSTP 11 supported) | Multidrop wiring | |
Cable length | Maximum 100 m | Maximum 1,219 m (4,000 ft) |
LCD Display | |||
LCD features | 5"(108.0 x 64.8 mm) Color TFT LCD 800 x 480 pixel LED backlight & touch panel(The front of the LCD screen can be touched) |
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Internal Communication with Accura 2500M | |||
Connector type | RJ45 connector | ||
Communication cable | Internal cable for the display module1 | ||
Cable length | Up to 3 m |
Current Input | |||||||
Connector type | Cable or busbar passing through the module | ||||||
AC Measurement | |||||||
Operating frequency | 50/60 Hz | ||||||
Sampling | 256 samples/cycle | ||||||
Measurement cycle (gapless) | Frame 0.2 sec(12 cycle @60 Hz, 10 cycle @50 Hz) | ||||||
Current |
Model | Basic Current(Ib) | Measuring Range (Accuracy guaranteed) |
Minimum Measured Value | Hole Dimensions | Weight | |
Accura 2550CM-3P-800A-210 | 800A |
16.0A
–
960A
|
0.80 A | 46.0 x 23.0 mm | 1,500 g | ||
Accura 2550CM-3P-630A-210 | 630A |
12.6A
–
756A
|
0.63 A | 46.0 x 23.0 mm | 1,500 g | ||
Accura 2550CM-3P-630A-145 | 630A |
12.6A
–
756A
|
0.63 A | 32.0 x 22.4 mm | 1,000 g | ||
Accura 2550CM-3P-400A-145 | 400A |
8.0A
–
480A
|
0.40A | 32.0 x 22.4 mm | 1,000 g | ||
Accura 2550CM-3P-400A-140 | 400A |
8.0A
–
480A
|
0.40A | 32.0 x 22.4 mm | 1,000 g | ||
Accura 2550CM-3P-250A | 250A |
5.0A
–
300A
|
0.25A | Ø21.0 x 22.0 mm | 136 g | ||
Accura 2550CM-3P-125A | 125A |
2.5A
–
150A
|
0.13A | Ø16.5 x 20.5 mm | 129 g | ||
Accura 2550CM-3P-100A | 100A |
2.0A
–
120A
|
0.10A | Ø13.5 x 17.5 mm | 114 g | ||
Accura 2550CM-3P-60A | 60A |
1.2A
–
72A
|
0.06A | Ø13.5 x 17.5 mm | 114 g | ||
Accura 2550CM-3P-5A1 | 5A |
0.1A
–
6A
|
0.01A | Ø10.0 mm | 155 g | ||
Accura 2550CM-1P-250A | 250A |
5.0A
–
300A
|
0.25A | Ø21.0 x 22.0 mm | 122 g | ||
Accura 2550CM-1P-125A | 125A |
2.5A
–
150A
|
0.13A | Ø16.5 x 20.5 mm | 83 g | ||
Accura 2550CM-1P-100A | 100A |
2.0A
–
120A
|
0.10A | Ø13.5 x 17.5 mm | 79 g | ||
Accura 2550CM-1P-60A | 60A |
1.2A
–
72A
|
0.06A | Ø13.5 x 17.5 mm | 79 g | ||
Measurement accuracy | IEC 61557-12 Class 0.5 | ±0.5 % Reading | |||||
Measurement data |
RMS, fundamental, Harmonics (up to the 50th order), Current phasor, THD, TDD, Crest factor, K-factor | ||||||
Symmetrical components(positive-, negative-, zero-sequence)2, unbalance according to symmetrical components/the NEMA standard2 | |||||||
Power |
Active power | Accuracy |
IEC 61557-12 Class 0.5 | ||||
Reactive power | IEC 61557-12 Class 1 | ||||||
Apparent power | IEC 61557-12 Class 0.5 | ||||||
Measured data | Power per phase, the sum of 3-phase power2 values | ||||||
Energy |
Active energy |
Accuracy | IEC 62053-21 Class 0.5 | ||||
Measured data | Received/delivered active energy | ||||||
Reactive energy |
Accuracy | IEC 62053-24 Class 1 | |||||
Measured data | Reactive energy in 4 quadrants | ||||||
Apparent energy |
Accuracy | IEC 61557-12 Class 0.5 | |||||
Measured data | Apparent energy | ||||||
Power factor | Power factor per phase, total power factor2, Displacement power factor per phase | ||||||
Current/Power demand | Peak demand, predicted demand | Demand time can be set up according to the demand subinterval value and the number of the demand subintervals | |||||
Current unbalance2 |
Measured data |
Current unbalance according to the NEMA standard | |||||
Zero-sequence, negative-sequence current unbalance | |||||||
AC Power Quality | |||||||
Current harmonics THD, TDD |
Harmonic order | Up to the 50th order | |||||
Measurement data | Magnitude of each harmonic, THD, TDD |
Current Input | ||||||
Connector type | Cable or busbar passing through the module | |||||
DC Measurement | ||||||
Sampling frequency
| 12.80 kHz (sampling cycle 78 us) | |||||
15.36 kHz(sampling cycle 65 us) @60 Hz mode | ||||||
Measurement cycle(gapless) | Frame 0.2 sec | |||||
Current |
Model | Base Current(Ib) | Measuring range (Accuracy guaranteed) |
Minimum Measured Value | Hole Dimensions | Weight |
Accura 2550CMD-1P-1500A | 1,500Adc | Up to 1,800 Adc | 1.50Adc | A busbar provided | 2,800 g | |
Accura 2550CMD-1P-750A | 750A | Up to 900 Adc | 0.75Adc | A busbar provided | 850 g | |
Accura 2550CMD-1P-250A | 250Adc | Up to 300 Adc | 0.25Adc | Ø21.0 x 22.0 mm | 122 g | |
Accura 2550CMD-1P-125A | 125Adc | Up to 150 Adc | 0.13Adc | Ø16.5 x 20.5 mm | 83 g | |
Accura 2550CMD-1P-100A | 100Adc | Up to 120 Adc | 0.10Adc | Ø13.5 x 17.5 mm | 79 g | |
Accura 2550CMD-1P-60A | 60Adc | Up to 72 Adc | 0.06Adc | Ø13.5 x 17.5 mm | 79 g | |
Measurement accuracy | ±1.0 % of reading ±0.1 % Ib | |||||
Measurement accuracy due to temperature drift | ±0.02% Ib/ °C typical | Calibrated at the ambient temperature of 25°C | ||||
Measurement data | DC current, RMS current, waveforms | |||||
Power |
Accuracy | ±1.5 % Reading ± 0.15 % Un*Ib2,3 | ||||
Measurement data | DC power, Real power | |||||
Energy |
Accuracy | ±1.5 % Reading ± 0.15 % Un*Ib | ||||
Measurement data |
DC energy measured by accumulating DC power values(Received/delivered) | |||||
Real energy measured by accumulating real power values(Received/delivered) |
Current input | ||||||
Connector type | Cable or busbar passing through the module | |||||
AC Measurement | ||||||
Operating frequency | 50/60 Hz | |||||
Sampling | 256 samples/cycle | |||||
Measurement cycle (gapless) | Frame 0.2 sec (12cycle @60 Hz, 10cycle @50 Hz) | |||||
Current |
Model | Base Current(Ib) | Measurement cycle (gapless)2 | Minimum Measured Value | Hole Dimensions | |
Accura 2550CMZ-3P-800A-220 | 800A |
16.0A
-
960A
|
0.80A | 46.0 x 22.9 mm | ||
Accura 2550CMZ-3P-400A-155 | 400A |
8.0A
-
480A
|
0.40A | 35.0 x 25.4 mm | ||
Accura 2550CMZ-3P-250A | 250A |
5.0A
-
300A
|
0.25A | Ø21.0 x 22.0 mm | ||
Accura 2550CMZ-3P-125A | 125A |
2.5A
-
150A
|
0.13A | Ø16.5 x 20.5 mm | ||
Accura 2550CMZ-3P-100A | 100A |
2.0A
-
120A
|
0.10A | Ø13.5 x 17.5 mm | ||
Accura 2550CMZ-3P-60A | 60A |
1.2A
-
72A
|
0.06A | Ø13.5 x 17.5 mm | ||
Accura 2550CMZ-1P-250A | 250A |
5.0A
-
300A
|
0.25A | Ø21.0 x 22.0 mm | ||
Accura 2550CMZ-1P-125A | 125A |
2.5A
-
150A
|
0.13A | Ø16.5 x 20.5 mm | ||
Accura 2550CMZ-1P-100A | 100A |
2.0A
-
120A
|
0.10A | Ø13.5 x 17.5 mm | ||
Accura 2550CMZ-1P-60A | 60A |
1.2A
-
72A
|
0.06A | Ø13.5 x 17.5 mm | ||
Measurement accuracy | IEC 61557-12 Class 0.5 | ±0.5 % Reading | ||||
Measurement data |
RMS, fundamental, harmonics (up to the 50th order), current phasor, THD, TDD, crest factor, K-factor | |||||
Symmetrical components(positive, negative, zero-sequence)1, unbalance according to symmetrical components/the NEMA standard1 | ||||||
Leakage current |
Measuring method | Measured by the built-in ZCT | ||||
Measuring range | 1 mA - 2 A | |||||
Measurement data | RMS, fundamental | |||||
Accuracy |
CMZ-3P-800A | ±1.0 % Reading ± 60 mA | ||||
CMZ-3P-400A/250A, CMZ-1P-250A | ±1.0 % Reading ± 30 mA | |||||
CMZ-3P/1P-125A/100A/60A | ±1.0 % Reading ± 20 mA | |||||
Operating range | Up to 120 % of phase current Ib | |||||
Power |
Active power | Accuracy |
IEC 61557-12 Class 0.5 | |||
Reactive power | IEC 61557-12 Class 1 | |||||
Apparent power | IEC 61557-12 Class 0.5 | |||||
Measured data | Power per phase, the sum of 3-phase power1values | |||||
Energy |
Active energy |
Accuracy | IEC 62053-21 Class 0.5 | |||
Measured data | Received/delivered active energy | |||||
Reactive energy |
Accuracy | IEC 62053-24 Class 1 | ||||
Measured data | Reactive energy in 4 quadrants | |||||
Apparent energy |
Accuracy | IEC 61557-12 Class 0.5 | ||||
Measured data | Apparent energy | |||||
Power factor | Power factor per phase, total power factor1, Displacement power factor per phase | |||||
Current/Power demand | Peak demand, predicted demand | Demand time can be set up according to the demand subinterval value and the number of the demand subintervals | ||||
Current unbalance1 |
Measured data |
Current unbalance according to the NEMA standard | ||||
Zero-sequence, negative-sequence current unbalance | ||||||
AC Power Quality | ||||||
Current harmonics THD, TDD |
Harmonic order | Up to the 50th order | ||||
Measurement data | Magnitude of each harmonic, THD, TDD |
Voltage Input | ||||||
Port name | Power supply side(S) +, - / Load side(L) +, - | |||||
Connector type | Bus bar terminal block | Bus bar 12 x 3 mm | SEMS bolt M5 x 10 | |||
DC Measurement | ||||||
Sampling frequency |
12.80 kHz(sampling cycle 78us) @50Hz mode | |||||
15.36 kHz(sampling cycle 65us) @60Hz mode | ||||||
Measurement cycle(gapless) | Frame 0.2 sec | |||||
Voltage |
Model | Basic Voltage(Un) | Measuring Range (Accuracy guaranteed) |
Minimum Measured Value | ||
Accura 2550DCM-500V-80A | 500 Vdc | Up to 550 Vdc | 5.0 Vdc | |||
Accura 2550DCM-50V-80A | 50 Vdc | Up to 55 Vdc | 0.5 Vdc | |||
Measurement Accuracy | ±0.5% Reading ± 0.05% Un | |||||
Measurement data | DC voltage, RMS voltage, waveforms | |||||
Current |
Model | Basic Current(Ib) | Measuring Range (Accuracy guaranteed) |
Minimum Measured Value | ||
Accura 2550DCM-500V-80A |
80 Adc |
Up to 100 Adc |
0.08 Adc |
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Accura 2550DCM-50V-80A | ||||||
Measurement accuracy | ±1.0 % Reading ± 0.1 % Ib | |||||
Measurement accuracy due to temperature drift1 | ±0.02 % Ib / ¡É typical | Calibrated at the ambient temperature of 25¡É | ||||
Measurement data | DC current, RMS current, waveforms | |||||
Power / Energy
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Measurement accuracy | ±1.5 % Reading ± 0.15 % Un*Ib | ||||
Measurement data
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DC energy measured by accumulating DC power values(Received/Delivered) | |||||
Real energy measured by accumulating real power values(Received/Delivered) | ||||||
Digital Output(DO) | ||||||
Port name | DO, DOG | |||||
Connector type | Screw-type terminal | |||||
Wire specs | 0.13 – 2.08 mm2(26 – 14 AWG), copper or aluminum | |||||
Output type | Latch, Pulse | |||||
Minimum pulse cycle | 0.2 sec | |||||
Minimum pulse width | 0.1 sec | |||||
Insulation | AC 2,000 V for 1 minute | |||||
Maximum rating | AC/DC 240 V 350 mA(max. 1 A) |
Environmental Conditions | |||
Installation location | Indoor use | ||
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 | ||
Ingress protection against dust and water | IEC 60529 IP 54(Accura 2500D) | ||
General | |||
Warranty Period | 2 years |
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