ROOTECH

Accura 2300S Distibution Panel Digital Power Meter

Voltage Measurement in the Incoming Feeder
Measures voltage by sensing voltage in the incoming feeder in distribution panels
Display
Displays the measurement data of Accura 2300S, as well as the data collected from Accura 2350 modules on the LCD screen¹
Measurement Parameters
Voltage	Line-to-neutral voltage, Line-to-line voltage, Frequency, Fundamental^{2, 3}, Harmonics^{2, 3}, THD
	Vector diagram(phasor)³, Residual voltage^{3, 4}
	Unbalance according to symmetrical components(zero sequence or negative sequence)³/the NEMA standard³
Temperature	Measures the temperature of Accura 2300S with a sensor located on the back of the module
Power Quality
Dip(Sag), Swell	RMS voltage values measured over 1 cycle(refreshed every half cycle)
Harmonics	Up to the 40th order
Unbalance³	Line-to-neutral/Line-to-line voltage unbalance, zero-sequence/negative-sequence unbalance
Measurement Events
Type of Event	Dip(Sag), Swell events
	Phase open events³, Fuse fail events, Over temperature events
	Over current events, Over leakage current events
	Over demand current events, Over power events
Max number of event logs	100
Internal Communication with Accura 2350 Modules
Dedicated communication	Sends sampled voltage data to multiple Accura 2350 modules
	Collects measurement data from multiple Accura 2350 modules
External Communication with the Host System
Ethernet	Communicates with the host system using 100 Mbps full duplex Modbus TCP protocol
	Ethernet switching using 2 ports
	Wiring mode: Star, Daisy-chain, Ring topology(RSTP⁵ supported)
RS-485	Communicates with the host system using Modbus RTU protocol at 1,200 ?115,200 bps⁶
Digital Input/Output
Digital input	2 channels, dry contact
Digital output	1 channel, Form A relay
Power Supply
Power supply voltage	AC 85–265 V 50/60 Hz, DC 100–300 V

1. 1. The LCD screen only shows the measurement data of the selected Accura 2350 module.
2. It indicates the line-to-neutral voltage and line-to-line voltage values in 3P4W mode and 3P3W mode, respectively.
3. The data are not displayed on the LCD screen of Accura 2300S and are provided only via communication.
4. The residual voltage is the RMS value calculated by summing up three-phase voltage values.
5. RSTP(Rapid Spanning Tree Protocol), IEEE 802.1D-2004.
6. Up to 16 devices can be connected to each bus at 115,200 bps.

Accura 2350- 1P3FSC Single Phase Three Feeder Power Measuring Module

Accura 2300S Distribution Panel Digital Power Meter

Power Supply
Port name	L+, N-, G(earth ground)
Connector type	Screw-type terminal(pluggable)
Wire specs	2.1 – 4.0 mm²(14 – 12 AWG), copper or aluminum
Wire temp rating	Above 70 °C
Power voltage	AC 85 – 265 V 50/60 Hz, DC 100 – 300 V
Withstand voltage	AC 2,500 V RMS, 60 Hz for 1 minute
Operating envir.	Pollution degree 2
Power consumption	Max 20 VA	Varies by the number of connected Accura 2350 modules
Inrush current	Peak 25 A, duration: less than 2 msec(AC 220 V)²
Voltage Input
Port name	V₁, V₂, V₃, V_N
Connector type	Terminal block¹
Wire specs	2.1 – 3.5 mm²(14 – 12 AWG), copper or aluminum
Wire temp rating	Above 70 °C
Burden	0.02 VA/phase @ 220 V
Withstand voltage	AC 2,000 V RMS, 60 Hz for 1 minute
Impedance	10 MΩ/phase
Meas. category	Category Ⅲ
Internal Communication with Accura 2350 Modules
Dedicated communication	Port name	RJ12–1, RJ12–2 (2 ports)
	Comm. cable	6C telephone line³
	Cable length⁴	Up to 6 m for each port
	Max number of connectable modules⁵	15 for each port
External Communication with the Host System
Ethernet	Port name	Ethernet1, Ethernet2 (2 ports)
	Connector type	RJ45
	Protocol	Modbus TCP
	Ethernet cable	STP(Shielded Twisted Pair)/ SFTP(Screened Foiled Twisted Pair) Cat 5e
	Comm. speed	100 Base–TX(100 Mbps/Full Duplex)
	Wiring mode	Star, Daisy-Chain, Ring topology
RS–485	Port name	Ta(TRX+), Tb(TRX-)
	Connector type	Screw-type terminal(pluggable)
	Protocol	Modbus TCP
	Wire specs	0.21 – 3.5 mm²(24 – 12 AWG), Shielded twisted pair⁶
	Cable length	Up to 1,219 m(4,000 ft)
	Comm. speed	1,200 – 115,200⁷ bps
	Max number of connectable modules	32 for each bus⁷
Digital Input/Output
Digital Input	Port name	DI₁, DI₂, DI_G
	Connector type	Terminal block⁸
	Input type	2 channels, dry contact(common ground)
	Wire specs	1.5 – 3.5 mm²(16 – 12 AWG), copper or aluminum
	Rating	DC 5 V (Self excitation)
	Isolation	Max 300 V
	Min pulse width	1 s
Digital output	Port name	DO, DO_G
	Connector type	Terminal block⁸
	Wire specs	1.5 – 3.5 mm²(16 – 12 AWG), copper or aluminum
	Output contact	1 channel, Form A relay
	Output type	Latch, Uncountable/Countable Pulse⁹, Periodic Pulse⁹
	Isolation	AC 2,000 V for 1 minute
	Min pulse width	AC 250 V 5 A, DC 110 V 0.3 A, DC 30 V 5 A
Voltage Measurement
Wiring mode	3P4W, 3P3W, 1P3W, 1P2W
Sampling rate	512 samples/cycle
Frequency meas.	50/60 Hz, 42 – 69 Hz
Voltage	Measuring range¹⁰(accuracy guaranteed)	AC 60 – 600 V Line–to–line
	Accuracy	±0.2 % Reading
	Max measured value	AC 660 V Line–to–line
	Min measured value	AC 5 V Line–to–neutral
	Measurement data	Line-to-neutral voltage, Line-to-line voltage, Frequency, Fundamenta^11,12, Harmonics^11,12, THD
		Vector diagram(Phasor)¹², Residual voltage^12,13
		Unbalance according to symmetrical components(zero sequence or negative sequence)¹², the NEMA standard¹²
Power Quality
Dip(Sag), Swell	RMS voltage values measured over 1 cycle(refreshed every half cycle)
Voltage harmonics¹¹	Harmonic order	Up to the 40th order
Voltage harmonics¹¹	Measurement data	THD, Magnitude of each harmonic
Voltage unbalance¹²	Line-to-neutral/Line-to-line voltage unbalance according to the NEMA standard
Voltage unbalance¹²	Zero-sequence/negative-sequence voltage unbalance

1. The maximum tightening torque of the terminal screws of the barrier-type terminal block is 1.36 Nm(14 kgf-cm, 12 lbf-in).
2. When installing a fuse at the voltage input line, it is recommended to use a fuse above 2 A/500 V due to inrush current.
3. It is provided with the product. 4C telephone lines cannot be used.
The conducting wire of the 6C telephone line should be at least 0.128 mm2(26 AWG). It is recommended to keep
a distance of over 5 mm from power lines generating high levels of noise to prevent interference.
4. It indicates the maximum length of the 6C telephone line used to connect Accura 2300S to all Accura 2350 modules
with each port(RJ12-1 or RJ12-2) on Accura 2300S.
5. Up to 15 Accura 2350-3P/1P power measuring modules can be connected to each port(RJ12-1, RJ12-2) on
Accura 2300S. For details about how to connect Accura 2300 to special-purpose modules, refer to the individual
user manuals of special-purpose modules.
6. The shielded cable should be connected to the Sh port on Accura 2300S
7. Up to 16 devices can be connected to each bus at 115,200 bps.
8. The maximum screw tightening torque of the barrier-type terminal block for digital input/output ports is 0.9 Nm(9 kgf-cm, 8 lbf-in).
9. Each pulse features a pulse period and pulse-on time.
10. It indicates the device’s input voltage range, thus the primary voltage refers to the value obtained by multiplying it by
the PT ratio when using external PTs.
11. It indicates the line-to-neutral voltage and line-to-line voltage values in 3P4W mode and 3P3W mode, respectively.
12. The data are not displayed on the LCD screen of Accura 2300S and are provided only via communication.
13. The residual voltage is the RMS value calculated by summing up three-phase voltage values.

Accura 2350-1P3FSC Single Phase Three Feeder Power Measuring Module

Current Input
Connector type	Through-hole type
Wire specs	Selectable according to hole dimensions
Current Input
Connector type	Through-hole type
Wire size	Selectable according to hole dimensions
Measurement
Frequency measurement	50/60 Hz, 42 – 69 Hz
Sampling	FFT calculation(harmonic measurement)		64 samples/cycle
	RMS calculation(basic measurement)		32 samples/cycle
Measuring range	Model		Basic Current	Measuring Range(Accuracy guaranteed)	Min Meas. Value	Hole Size
	Accura 2350-1P3FSC-125A		125 A	1.25 A - 150 A	0.83A	16.6 x 21.8 mm
	Accura 2350-1P3FSC-125A-DIZCT		125 A	1.25 A - 150 A	0.83 A	16.6 x 21.8 mm
	Accura 2350-1P3FSC-60A		60 A	0.60 A - 72 A	0.40 A	11.8 x 21.8 mm
	Accura 2350-1P3FSC-60A-DIZCT		60 A	0.60 A - 72 A	0.40 A	11.8 x 21.8 mm
	Accuracy		±0.5 % Reading¹
	Measured data		RMS, Fundamental, THD, TDD, Harmonics²
			Vector diagram(phasor)², Crest factor², K-factor²
Leakage current³			Leakage current input		Voltage-type external ZCT 200 mA/100 mV @1.2 kΩ Burden
	Accuracy⁴/Measuring range		±2 % Reading + 2 mA / Up to 2 A
Power	Active	Accuracy	IEC 61557-12 Class 0.5
	Reactive		IEC 61557-12 Class 1
	Apparent		IEC 61557-12 Class 0.5
Energy	Active	Accuracy	IEC 62053-22 Class 0.5S
		Measured data	Received/Delivered/Net/Sum(total) energy
	Reactive³	Accuracy	IEC 62053-24 Class 1
		Measured data	Positive/Negative/Net/Sum(total) energy
	Apparent³	Accuracy	IEC 61557-12 Class 0.5
Power factor	Power factor
Demand	Current/Power		Demand, Peak demand, Predicted demand^2,5
Power Quality
Current harmonics	Harmonic order		Up to the 31st harmonic
	Measured data		THD, TDD, magnitude of each harmonic²
Digital Input³
Port name	DI₁, DI₂, DI₃, DI₄, DI_G
Connector type	Terminal block
Input type	Dry contact
Wire specs	0.21 – 2.1 mm² (24 – 14 AWG), copper or aluminum
Isolation	Non-isolated between channels
Min pulse width	0.5s
Leakage Current Input³
Port name	Z₁, Z₂, Z₃, Z_1G, Z_2G, Z_3G
Connector type	Terminal block
Wire specs	0.21 – 2.1 mm² (24 – 14 AWG), copper or aluminum

1. Current accuracy is 0.5% reading. Active energy conforms to IEC62053-22 Class 0.5S.

Accura 2300S/2350 Common

Power Measurement of Each Single-phase Load
Measures various power characteristics based on the current data measured in each single-phase feeder, as well as the voltage data received from Accura 2300S module
Model	Basic Current
Accura 2350–1P3FSC–125A	125 A
Accura 2350-1P3FSC–125A–DIZCT	125 A
Accura 2350–1P3FSC–60A	60 A
Accura 2350-1P3FSC-60A-DIZCT	60 A
Measurements
Current	RMS, Fundamental, THD, TDD, Harmonics¹, Leakage current²
	Vector diagram(phasor)¹, Crest factor¹, K-factor¹
Power	Active power, Reactive power, Apparent power
Energy	Active energy(Received/Delivered/Net/Sum), Reactive energy¹, Apparent energy¹
Power factor	Power factor
Demand	Current/power demand, Peak current/power demand, Predicted current/ power demand¹
Internal Communication with Accura 2300S
Dedicated communication	Receives sampled voltage data from Accura 2300S
	Sends measurement and operational status data to Accura 2300S
Leakage Current Inputs and Digital Inputs (Optional ²)
Leakage current input²	3 channels for three single-phase feeders
Digital input²	4 channels, dry contact
Power Supply
Power supply voltage	Receives power from Accura 2300S

Item
Operating temp	-20 to 70℃(-4 –158℉)
Safety temp¹	-20 to 65℃(-4 –149℉)
Storage temp	-40 to 85℃(-40 –185℉)
Operating humidity	5 –95%, non-condensing
Operating altitude	Up to 2,000 m