ROOTECH

Accura 2500M Main Distribution Panel Module

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, vector diagram(Phasor)
	Harmonics, THD¹
	Symmetrical components (positive-, negative-, zero-sequence)
	Symmetrical unbalance, NEMA unbalance
	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	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 for each module can be configured 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	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	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

1. It is calculated for the line-to-line voltage in 3P3W voltage connection and for the line-to-neutral
voltage in 3P3W voltage connection.
2. It is calculated by summing up three-phase line-to-neutral voltages.
3. It is not available when there is any phase connected to earth in 3P3W connection
4. Leakage current is measured only in Accura 2550CMZ Power/ Leakage Current measurement module
either with the built-in ZCT.
5. The number of modules that can be connected depends on module types.
For more information on module connections, refer to ⌜Appendix B Module Connection⌟in the User Guide.
6. RSTP(Rapid Spanning Tree Protocol), IEEE 802.1D-2004
7. 16 devices can be connected for each bus at communication speed of 115,200 bps.

Accura 2500D Main Distribution Panel HMI Module

Accura 2550CM-3P/1P Three/Single-phase Power Measuring 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		800A
CM-3P-630A		630A
CM-3P-400A		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
Residual current	Measured by summing up three-phase currents		Modules(basic current ≥ 400 A)
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
Events
Current events	“Over” or “Under” event on measured current values

1. Accura 2550CM-3P-5A module can be used by externally installing CTs(the rated secondary current: 5A).
2. Only available in Accura 2550CM-3P module.
3. Measurement-related events of Accura 2550 module are managed in Accura 2500M module.

Accura 2550CMD-1P DC Power Measuring Module

Accura 2550CMZ-3P/1P Three/Single-phase Power/Leakage Current Measuring Module

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-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
Events
Current events	“Over” or “Under” event on measured current values
Leakage current events	“Over” event on measured leakage current values

1. It is only supported in the Accura 2550CMZ-3P module.
2. Measurement-related events of Accura 2550 module are managed in Accura 2500M module.

Accura 2550DCM DC Power Measuring Meter

Accura 2500M Main Distribution Panel Module

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 MΩ		20 MΩ
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(RMS voltage refreshed each cycle)
Voltage	Measuring range (Accuracy ensured)	AC 35 – 300 V Line-to-neutral
	Accuracy	IEC 61557-12 Class 0.5	±0.5 % 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
		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	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	Measurement data	Line-to-neutral voltage / Line-to-line voltage unbalance unbalance according to NEMA standards
		Zero-sequence unbalance and negative sequence unbalance
DC Voltage Measurement
Module	Accura 2500M		Accura 2500M-VD
Wiring method	1DC2W, 2DC3W, 3DC4W, Bipolar		1DC2W, Bipolar
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 to1,200 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		DC voltage , RMS voltage
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^6,7for the display module		Internal communication cable^6,7
Cable length	Up to 3 m		The entire cable length in ring topology: up to 50m
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)

1. The maximum applicable torque for the terminal screw of the barrier-type terminal is 1.4 Nm(14 kgf-cm).
2. It refers to the maximum power consumption when Accura 2500D and Accura 2550 are connected.
3. When installing a fuse at the voltage line, it is recommended to use a fuse above 2A/500V due to inrush ucrrent.
4. Un indicates the basic voltage, 280 V.
5. It is calculated with the line-to-line voltage in 3P3W voltage connection, and with the line-to- neutral voltage in 3P4W voltage connection.
6. It is provided with the product.

7. It is provided with the product. Additional communication cables needed for ring topology are sold separately.
The conducting wire of the communication cable should be at least 0.205mm² (24 AWG).
It is recommended to keep a distance of over 5 mm from power lines generating high levels of noise.
8. The built-in Ethernet switch allows for daisy-chain connection between Accura 2500M modules without a separate external switch.
9. FTP(Foiled Shield Twisted Pair), STP(Braided Shield Twisted Pair), SFTP(Braided Foiled Shield Twisted Pair)
10. Up to 16 devices for each bus can be connected at 115,200 bps.
11. RSTP(Rapid Spanning Tree Protocol), IEEE 802.1D-2004.
12. Un indicates the basic voltage, 280 Vdc. However, for Accura 2500M-VD module, its basic voltage is 560 Vdc.
13. Accura 2500M-VD module with a voltage divider is used for high voltage measurement.

Accura 2500D Integrated Distribution Panel HMI Module

Accura 2550CM-3P/1P Three/Single-phase Power Measuring Module

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	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 x 10.0 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
Residual current	Measuring method	Calculated by summing up three-phase currents			Modules(basic current ≥ 400 A)
	Measured data	RMS, fundamental
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

1. Accura 2550CM-3P-5A module can be used by externally installing CTs(the rated secondary current: 5A).
2. It is only available in Accura 2550CM-3P module.

Accura 2550CMD-1P DC Power Measuring Module

Current Input
Connector type	Cable or busbar passing through the module
DC Measurement
Sampling frequency	12.80 kHz (sampling cycle 78 us)
Sampling frequency	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 Diameter	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
	Current temperature drift	±0.02% Ib/ °C typical		Ambient temperature for temperature calibration: 25°C
	Measurement data	DC current, RMS current, waveforms
Power	Accuracy	±1.5 % Reading ± 0.15 % Un*Ib^2,3
Power	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)
	Measurement data	Real energy measured by accumulating real power values(Received/delivered)

1. Errors in current measurement might occur as the temperature changes based on the temperature applied for device calibration.
2. The basic voltage Un of Accura 2500M module is 280 Vdc.
3. The basic voltage Un of Accura 2500M-VD module is 560 Vdc.

Accura 2550CMZ-3P/1P Three/Single-phase Power/Leakage Current Measuring Module

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-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	Up to 2 A
	Measurement data	RMS, fundamental
	Accuracy²/operating range	±1.0 % Reading ± 0.02 % Ib³ / 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

1. It is only supported in Accura 2550CMZ-3P module.
2. It indicates the measurement accuracy of the fundamental frequency component of leakage current.

Accura 2550DCM DC Power Measuring Meter

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
	Accura 2550DCM-50V-80A
	Measurement accuracy	±1.0 % Reading ± 0.1 % Ib
	Measurement accuracy due to temperature drift¹	±0.02 % Ib / ℃ typical	Calibrated at the ambient temperature of 25℃
	Measurement data	DC current, RMS current, waveforms
Power / Energy	Measurement 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)
Digital Output(DO)
Port name	DO, DO_G
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 400 V 350 mA(max. 1 A)

1. Errors in current measurement might occur as the temperature changes according to the temperature applied
for temperature calibration.

General Specifications

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

Environmental Conditions
Installation location	Indoor use
Operating temperature	-20 to 70℃(-4 to 158℉)
Safe operating temperature ¹	-20 to 65℃(-4 to 149℉)
Storage temperature	-40 to 85℃(-40 to 185℉)
Operating humidity	5 - 95%(non-condensing)
Operating altitude	Up to 2,000 m
General
Warranty Period	2 years

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
Events
Current events	“Over” or “Under” event on measured 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	55 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

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)
Internal Communication with Accura 2500M
Connector type	RJ45 connector
Communication cable	Internal cable for the display module¹
Cable length	Up to 3 m