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	1-cycle RMS refreshed each cycle
PQ Curve¹	1-cycle RMS refreshed each cycle/SEMI F47-0706, IEC 61000-4-11/34 Class 3, and ITIC
Harmonics¹	1st to 50th order harmonics, THD
Unbalance	Line-to-neutral voltage/Line-to-line voltage unbalance, Unbalance in symmetrical components
Events
Power quality events	Dip/Swell events
	PQ Curve events		SEMI F47-0706, IEC 61000-4-11/34 Class 3, ITIC
Voltage connection events	Phase Open events ³		Event on voltage connection failure
	Fuse Fail events ³		Event on fuse failure in the voltage sensing line
Custom events	Events for which users define input data and event operations Users can set up to 80 events.
	Event input data		0.2 sec data
			Can be selected among Voltage/Current/Power/Leakage Current⁴/ Etc/
	Threshold		Set by users
	Detection method		Over and Under: set by users
System events	Events related to module control, communication status, and setup
Internal Communication with Accura 2500D
Dedicated communication	Sends/receives data to/from Accura 2500D via its own protocol
Internal Communication with Accura 2550
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 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 100Mbps Modbus TCP protocol
	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 1200 - 115200⁷ 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 3P4W 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 or with the residual current value.
5. The number of modules that can be connected depends on module types.
For more information on module connections, see Appendix B 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 115200 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-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
DC Measurement Parameter
Current	DC Current, RMS Current
Power	DC Power, real power
Energy	Received/delivered DC energy, received/delivered real energy
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
Custom events³	Event input data	0.2 sec data
		Can be selected among Current/Power/Etc
	Threshold	Set by users
	Detection method	Over and Under: set by users

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. Events for the measurement data 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-800A	800A
CMZ-3P-630A	630A
CMZ-3P-400A	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, symmetrical unbalance ¹, current unbalance¹
Leakage current	ZCT current	Measured by the built-in ZCT	modules(rated current ≤ 250A)
	Residual current	Measured by summing up three-phase currents	modules(rated current ≥ 400A)
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
Custom events³	Event input data	Can be selected among Current/Power/Leakage Current ²/Etc.
	Threshold	Set by users
	Detection method	Over and Under: set by users

1. It is only supported in the Accura 2550CMZ-3P module.
2. Events for the measurement data of Accura 2550 module are managed in Accura 2500M module.

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)
Power voltage(Us)	AC 100 - 240 V 45 - 65Hz / DC 110 - 300 Vdc
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 Vdc)
Voltage Input
Port name	V1, V2, V3, VN
Connector type	Terminal block ¹
Wire specifications	2.1 - 5.0 mm² (14 - 10 AWG)
Rated insulation voltage	600 V(Overvoltage category III, pollution degree 2)
Measured frequency range	DC, 42 - 69 Hz(50/60 Hz)
Impedance	10 MΩ/Phase
Burden	0.003 VA/Phase @AC 220 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 RMS @60Hz,10-cycle RMS @50Hz)
	Dip/Swell measurement	Subframe: 1-cycle(1-cycle RMS refreshed each cycle)
Voltage	Measuring range (Accuracy ensured)	AC 60 - 600 V Line-to-line
		AC 35 - 346 V Line-to-neutral
	Accuracy	±0.5 % Reading
	Minimum measured value	AC 5 V Line-to-neutral
	Measurement data	Line-to-neutral voltage, Line-to-line voltage
		Fundamental, harmonics(1st-50th order)⁵
		Vector diagram(Phasor), THD
		Symmetrical components(positive-, negative-, zero-sequence)
		Symmetrical unbalance, NEMA unbalance
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 346 V Line-to-neutral
Frequency	Measuring range	42 - 69 Hz
AC Power Quality
Dip/Swell⁵	Measured value/Threshold	1-cycle RMS refreshed every cycle	Threshold set by users
PQ Curve⁵	Measured value/Threshold	1-cycle RMS refreshed every cycle	Threshold Dip 90 %/Swell 110 %
	Curve type	SEMI F47-0706, IEC 61000-4-11/34 Class 3, ITIC
Voltage harmonics,THD⁵	Harmonic order	1st - 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
Wiring method	1DC2W, 2DC3W, 3DC4W, 2DC4W
Sampling frequency	25.6 kHz (sampling cycle 39 us)
Measurement cycle (gapless)	Basic measurement	Frame: 0.2 sec
	Dip/Swell measurement	Subframe: 20ms
Voltage	Measuring range(Accuracy guaranteed)	Up to 500 Vdc
	Measurement accuracy of DC voltage	±0.5 % Reading ± 0.05 % Un ⁶
	Minimum measured value	DC 5 Vdc
	Measurement data	DC voltage, RMS voltage
DC Power Quality
Dip/swell	Measured value/Threshold	20ms DC refreshed every 20ms	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 cable^6,7		Internal cable^6,7
Cable length	Up to 3 m		The entire cable length in ring connection: up to 50m
External Communication
Type	Ethernet communication		RS-485 communication
Protocol	Modbus TCP Protocol		Modbus RTU Protocol
Port	2 Ethernet switch ports 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)		1200 - 115200 bps¹⁰
Wiring method	Star, Daisy-chain, Ring connection (RSTP ¹¹ supported)		Multidrop wiring

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 input unit, it is recommended to use a fuse above 2A/500V due to inrush current.
4. Un indicates the base voltage, 280V.
5. It is calculated for the line-to-line voltage in 3P3W voltage connection, and for the line-to-neutral voltage in 3P4W voltage connection.
6. It is provided with the product.

7. It is recommended to keep a distance of over 5mm 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 115200 bps.
11. RSTP(Rapid Spanning Tree Protocol), IEEE 802.1D-2004.

Accura 2500D Integrated Distribution Panel HMI Module

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

Current Input
Connector type	Through-hole type
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	Base Current(In)	Measuring range (Accuracy guaranteed)	Minimum Measured Value	Hole Diameter	Weight
	Accura 2550CM-3P-250A	250A	25.0A - 300A	100A	Ф21.0 mm	136 g
	Accura 2550CM-3P-125A	125A	12.5A - 150A	0.50A	Ф16.5 mm	129 g
	Accura 2550CM-3P-100A	100A	10.0A - 120A	0.40A	Ф13.5 mm	114 g
	Accura 2550CM-3P-60A	60A	6.0A - 72A	0.24A	Ф13.5 mm	114 g
	Accura 2550CM-3P-5A¹	5A	0.5A - 6A	0.02A	Ф10.0 mm	155 g
	Accura 2550CM-1P-250A	250A	25.0A - 300A	100A	Ф21.0 mm	122 g
	Accura 2550CM-1P-125A	125A	12.5A - 150A	0.50A	Ф16.5 mm	83 g
	Accura 2550CM-1P-100A	100A	10.0A - 120A	0.40A	Ф13.5 mm	79 g
	Accura 2550CM-1P-60A	60A	6.0A - 72A	0.24A	Ф13.5 mm	79 g
	Measurement accuracy	±0.5 % Reading
	Measurement data	RMS, Fundamental, Harmonics (1st ? 50th order), Current phasor, THD, TDD, Crest factor, K-factor
	Measurement data	Symmetrical components(positive-, negative-, zero-sequence)², Symmetrical unbalance², NEMA unbalance²
AC Power Quality
Current harmonics THD, TDD	Harmonic order	1st - 50th order
Current harmonics THD, TDD	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 supported in Accura 2550CM-3P module

Accura 2550CMD-1P DC Power Measuring Module

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

Current input
Connector type	Through-hole type
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	Base Current(Ib)	Measurement cycle (gapless)²)	Minimum Measured Value	Hole Dimensions
	Accura 2550CMZ-3P-800A	800A	16.0A - 960A	3.20A	23.0 x 46.0 mm
	Accura 2550CMZ-3P-630A	630A	12.6A - 756A	2.50A	23.0 x 46.0 mm / 22.4 x 32.0 mm
	Accura 2550CMZ-3P-400A	400A	8.0A - 480A	1.60A	22.4 x 32.0 mm
	Accura 2550CMZ-3P-250A	250A	5.0A - 300A	1.00A	Ф21.0 mm
	Accura 2550CMZ-3P-125A	125A	2.5A - 150A	0.50A	Ф16.5 mm
	Accura 2550CMZ-3P-100A	100A	2.0A - 120A	0.40A	Ф13.5 mm
	Accura 2550CMZ-3P-60A	60A	1.2A - 72A	0.24A	Ф13.5 mm
	Accura 2550CMZ-1P-250A	250A	5.0A - 300A	1.00A	Ф21.0 mm
	Accura 2550CMZ-1P-125A	125A	2.5A - 150A	0.50A	Ф16.5 mm
	Accura 2550CMZ-1P-100A	100A	2.0A - 120A	0.40A	Ф13.5 mm
	Accura 2550CMZ-1P-60A	60A	1.2A - 72A	0.24A	Ф13.5 mm
	Measurement accuracy	±0.5 % Reading
	Measurement data	RMS, Fundamental, Harmonics (1st ? 50th order), Current phasor, THD, TDD, Crest factor, K-factor
		Symmetrical components (positive, negative, zero-sequence)¹, Symmetrical unbalance¹, NEMA unbalance¹
Leakage current	ZCT current	Measuring method	Measured by the built-in ZCT			Modules(rated current ≤ 250A)
		Measuring range	Up to 2 A
		Measurement data	RMS, Fundamental
		Accuracy²/operating range	±1.0 % Reading ± 0.01 % Ib / Up to 120 % Ib
	Residual current	Measuring method	Measured by summing up three phase currents (ZCT Function)			Modules(rated current ≥ 400A)
		Measurement data	RMS, Fundamental
		Accuracy²/operating range	±1.0 % Reading ± 0.012 % Ib / Up to 120 % Ib
AC Power Quality
Current harmonics THD, TDD	Harmonic order	1st – 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.

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

Installation and Temperature/Humidity
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)
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		Base Current
CMD-1P-250A		250A
CMD-1P-125A		125A
CMD-1P-100A		100A
CMD-1P-60A		60A
DC Measurement Parameter
Current	DC current, RMS current
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
Custom events³	Event input data	0.2 sec data
		Can be selected among Current/Power/Etc
	Threshold	Set by users
	Detection method	Over and Under: set by users

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(for connection with a communication cable)
Connector type	RJ45 connector
Communication cable	Internal cable¹
Cable length	Up to 3 m