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Accura 2300S Digital Power Meter

Voltage Measurement in the Incoming Feeder
Measures voltage by sensing voltage in the incoming feeder in industrial control 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 components)³, the NEMA standard³
Temperature	Measures the temperature⁵ 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 50th⁶ 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
	DI events, User-defined 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
	Number of connected modules	Max. 15 modules per port⁷
	Total length⁹ of the 6C telephone line⁸	Max. 6 m per port
External Communication with the Host System
Ethernet	Performs communication via Modbus TCP protocol at 100 Mbps Full duplex
	Ethernet switching¹⁰ using 2 ports
	Wiring mode: Star, Daisy-chain, Ring topology(RSTP¹¹ supported)
RS-485	Performs communication via Modbus RTU protocol at 1,200 / 2,400 / 4,800 / 9,600 / 19,200 / 38,400 / 57,600 / 115,200¹² bps
Digital Input/Output
Digital input	2 channels, Dry contact
Digital output	1 channel, Form A relay
Power Supply
Power supply voltage¹³	AC 100 — 240 V, DC 100 — 300 V, CAT II
Frequency	50/60 Hz

1. The LCD screen shows the measurement data on only the selected Accura 2350 module.
2. It indicates the line-to-neutral voltage value in 3P4W mode and the line-to-line voltage value in 3P3W mode.
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 voltage value calculated by summing the three-phase voltage values.
5. Temperature measurement is not for fire monitoring but for reference only.
6. The harmonic data provided via communication include harmonics up to the 40th order.
7. Accura 2300S can be connected with up to 15 Accura 2350-3P/1P modules per port(RJ12-1, RJ12-2).
When connecting Accura 2300S with special-purpose modules except for the Accura 2350-3P/1P modules,
refer to the individual manual for each module.
8. 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 the power lines generating high levels of noise.
9. It indicates the maximum length of the 6C telephone line used to connect Accura 2300S to all Accura 2350 modules through each port(RJ12-1 or RJ12-2) on Accura 2300S.
10. The built-in Ethernet switch allows for Ethernet connections between Accura 2300S modules without the need for separate external switches.
11. RSTP(Rapid Spanning Tree Protocol), IEEE 802.1D-2004.
12. At 115,200 bps, a master can communicate with up to 16 slave devices within a maximum distance of 600 m.
13. The device conforms to UL standards for the tested AC power supply voltage.

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

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 device
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 / 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

1. The data are not displayed on the LCD screen of 2300S and are provided only via communication.
2. The data are available only on Accura 2350-1P3FSC-DIZCT module. To purchase ZCTs, please contact Rootech Inc.

Accura 2300S Digital Power Meter

Power Supply
Port name	L+, N-
Connector type	Screw-type terminal block (pluggable)
Wire specs / torque	0.25 – 4.0 mm²(24 – 12 AWG), copper / Max. 0.51 Nm (5.2 kgf-cm, 4.5 lbf-in)
Wire temp rating	Above 70 °C
Power supply¹	AC 100 – 240 V , DC 100 – 300 V, CAT II
Frequency	50/60 Hz
Withstand voltage	AC 3,000 V RMS, 60 Hz for 1 minute
Operating envir.	Pollution degree 2
Power consumption	Max. 20 W	Varies by the number of connected Accura 2350 modules
Inrush current²	Peak 31 A, duration no more than 2 msec (AC 220 V)
	Peak 11 A, duration no more than 200 μsec (DC 110 V)
Ground Wiring
Port name
Connector type	Screw-type terminal block (pluggable)
Wire specs / Torque	0.25 – 4.0 mm²(24 – 12 AWG), copper / Max. 0.51 Nm (5.2 kgf-cm, 4.5 lbf-in)
Wire temp rating	Above 70 °C
Voltage Input
Port name	V₁, V₂, V₃, V_N
Connector type	Barrier-type terminal block (M4 / bolt head size Ø7)
Wire specs / torque	0.34 – 2.5 mm²(22 – 14 AWG), copper / Max. 1.1 Nm (12 kgf-cm, 10 lbf-in)
Wire temp rating	Above 70 °C
Burden	0.01 VA/phase @ 220 V
Withstand voltage	AC 3,000 V RMS, 60 Hz for 1 minute
Impedance	10 MΩ/phase
Meas. category	Category Ⅲ
Internal Communication with Accura 2350 Modules
Dedicated communication	Connected to multiple Accura 2350 modules
	Port name	RJ12–1, RJ12–2 (2 ports)
	Connector type	RJ12
	Protocol	Dedicated protocol of the manufacturer
	Number of connectable modules	Max. 15 modules per port³
	Total length⁵ of 6C telephone line⁴	Max. 6 m per port
External Communication with the Host System
Ethernet	Port name	Ethernet1, Ethernet2 (2 ports)
	Connector type	RJ45
	Protocol	Modbus TCP
	Ethernet cable	STP (Braided Shield Twisted Pairs)/ SFTP (Braided Foiled Shield Twisted Pairs) Cat 5e
	Comm. speed	100 Base–TX(100 Mbps/Full Duplex)
	Wiring mode	Star, Daisy-Chain, Ring topology
RS–485¹⁴	Port name	Ta(TRX+), Tb(TRX-), (Ground)
	Connector type	Screw-type terminal block (pluggable)
	Protocol	Modbus RTU
	Wire specs	UL 2919 RS-485 1P/2P 0.25 – 4.0 mm²(24 – 12 AWG), Braided shield twisted pairs
	Cable length	Up to 1,219 m(4,000 ft)
	Bit rate	1,200 / 2,400 / 4,800 / 9,600 / 19,200 / 38,400 / 57,600 / 115,200⁶ bps
	Number of connectable modules	Max. 32 modules per bus⁶
Digital Input/Output
Digital input	Port name	DI₁, DI₂, DI_G
	Connector type	Barrier-type terminal block (M3 / bolt head size Ø5.5)
	Input type	2 channels, Dry contact(common ground)
	Wire specs / torque	0.34 – 2.5 mm²(22 – 14 AWG), copper / Max. 1.1 Nm (12 kgf-cm, 10 lbf-in)
	Rating	DC 5 V (self-excitation)
	Isolation	Up to 300 V
	Min. pulse width	1 sec
Digital output	Port name	DO, DO_G
	Connector type	Barrier-type terminal block (M3 / bolt head size Ø5.5)
	Wire specs / torque	0.34 – 2.5 mm²(22 – 14 AWG), copper / Max. 1.1 Nm (12 kgf-cm, 10 lbf-in)
	Output contact	1 channel, Form A relay
	Output type	Latch, Uncountable/Countable Pulse⁷, Periodic Pulse⁷
	Isolation	AC 3,000 V for 1 minute
	Max. rating	AC 240 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.	42 – 69 Hz
Voltage	Measuring range⁸ (accuracy guaranteed)	AC 35 – 277 V L-N (Line-to-neurtral),
		AC 60 – 480 V L-L (for unearthed Delta⁹ & Y systems)
	Accuracy	±0.2 % Reading
	Min. measured value	AC 5 V L-N / 9 V L-L
	Measurement data	Line-to-neutral voltage, Line-to-line voltage, Frequency, Fundamental^10,11, Harmonics^10,11 ,THD
		Vector diagram (phasor)¹¹, Residual voltage^{11, 12}
		Unbalance according to symmetrical components (zero sequence or negative sequence) ¹¹/the NEMA standard¹¹
Power Quality
Dip(Sag), Swell	RMS voltage values measured over 1 cycle(refreshed every half cycle)
Voltage harmonics	Harmonic order	Up to the 50th¹³ order
	Measurement data	THD, Magnitude of each harmonic
Unbalance¹¹	Line-to-neutral/Line-to-line voltage unbalance according to the NEMA standard
	Zero-sequence/negative-sequence voltage unbalance
General
Temperature sensor¹⁴	Located at the rear of the device
Weight	487 g

1. The device conforms to UL standards for the tested AC power supply voltage.
2. When installing fuses on the power line, it is recommended to use UL listed Class RK5 fuses above 2 A/500 V.
3. Accura 2300S can be connected with up to 15 Accura 2350 3P/1P modules per port(RJ12-1, RJ12-2).
When connecting the device to special-purpose modules, refer to the individual manual for each module.
4. 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 the power lines generating high levels of noise.
5. It indicates the maximum length of the 6C telephone line used to connect Accura 2300S to all Accura 2350 modules through each port
(RJ12-1 or RJ12-2) on Accura 2300S.
6. At 115,200 bps, a master can communicate with up to 16 slave devices within a maximum distance of 600 m.
7. The duty cycle of pulse features the pulse period and pulse on time.
8. 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.
9. For Delta connections, do not exceed 480 V ungrounded or 240 V corner grounded.
10. It indicates the line-to-neutral voltage and line-to-line voltage values in 3P4W mode and 3P3W mode, respectively.
11. The data are not displayed on the LCD screen of Accura 2300S and are provided only via communication.
12. The residual voltage is the RMS value calculated by summing the three-phase voltage values.
13. The harmonic data provided via communication include harmonics up to the 40th order.
14. It measures temperature not for fire monitoring but for reference only.

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

Power Supply
Power supply	Receives power from Accura 2300S
Current Input
Connector type	Through-hole type
Wire size	Selectable according to hole dimensions
Measurement
Frequency measurement	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	Weight
	Accura 2350-1P3FSC-125A		125 A	1.25 A - 150 A	0.83A	16.6 x 21.8 mm	457 g
	Accura 2350-1P3FSC-125A-DIZCT		125 A	1.25 A - 150 A	0.83 A	16.6 x 21.8 mm	468 g
	Accura 2350-1P3FSC-60A		60 A	0.60 A - 72 A	0.40 A	11.8 x 21.8 mm	393 g
	Accura 2350-1P3FSC-60A-DIZCT		60 A	0.60 A - 72 A	0.40 A	11.8 x 21.8 mm	404 g
	Accuracy		±0.5 % Reading¹
	Measured data		RMS, Fundamental, THD, TDD, Harmonics²
			Vector diagram(phasor)², Crest factor², K-factor²
Leakage current³	Leakage current input		External voltage-output ZCT 200 mA/100 mV @ 1.2 kΩ burden
	Minimum measured current		20 mA
	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
	Reactive²	Accuracy	IEC 62053-24 Class 1
		Measured data	Positive/Negative/Net/Sum(total) energy
	Apparent²	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	PCB terminal block (M2.6 / Wire strip length 5 – 6 mm)
Input type	Dry contact
Wire specs / Torque	0.14 – 2.5 mm² (26 – 14 AWG), copper / max. 0.34 Nm (3.5 kgf-cm, 3 lbf-in)
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	PCB terminal block (M2.6 / Wire strip length 5 – 6 mm)
Wire specs / Torque	0.14 – 2.5 mm² (26 – 14 AWG), copper / max. 0.34 Nm (3.5 kgf-cm, 3 lbf-in)

1. A maximum accuracy error of ±1 % may occur depending on the position of the holes through which the cables pass.
2. The data are not displayed on the LCD screen of 2300S module and are provided only via communication.
3. The data are available only on Accura 2350-1P3FSC-DIZCT module.
4. It indicates the measurement accuracy when the error of an external ZCT is zero.
5. The predicted demand is calculated under the assumption that the currently measured value will remain constant
for the remainder of the subinterval within the demand subinterval.

Accura 2300S/2350 Common

Environmental Conditions
Operating temperature	-20 — 70 ℃(-4 — 158 ℉)
Safe operating temperature¹	-20 – 60 ℃(-4 — 140 ℉)
Storage temperature	-40 — 85 ℃(-40 — 185 ℉)
Operating humidity	5 — 95 %(non-condensing)
Operating altitude	Up to 2,000 m
Ingress protection against dust and water	IEC 60529 IP54 (Accura 2300S)