ROOTECH - Energy Solution for Human and Nature

Digital Power Quality Meter

Display
Shows real-time measurement data on the LCD screen
Voltage
L-N voltage, L-L voltage, Fundamental frequency, Harmonics, Phasor diagram, THD ¹, Symmetrical components (positive-, negative-, zero-sequence), Voltage unbalance (symmetrical components and the NEMA standard), Residual voltage
Current
Phase current, Fundamental frequency, Harmonics, Phasor diagram, THD ¹, TDD ², Symmetrical components (positive-, negative-, zero-sequence), Current unbalance (symmetrical components and the NEMA standard), Residual current
Power
Active power, Reactive power, Apparent power
Power Quality
Voltage / Current harmonics	Magnitude of each harmonic up to the 50th order, THD, Current TDD, Crest factor, K-factor
Dip/Swell	RMS voltage refreshed every cycle
PQ Curve	RMS voltage refreshed every cycle
Unbalance (voltage, current)	Unbalance according to the NEMA standard, Negative-/zero-sequence unbalance based on symmetrical components
Phasor diagram	Voltage and current phasor
Waveform	Voltage and current waveforms
	Data available via communication: 12 cycles of waveforms (128 samples/cycle) Data available via the device’s LCD screen: 2 cycles of waveforms (128 samples/cycle)
Events
Power quality events ³	Dip/Swell events
	PQ Curve events
	Up to 500 power quality events can be saved.
Measurement events	Voltage status events ³	Determined using the voltage/current data measured at 0.2-second intervals (definite time: 1 second)
		Phase open event
		Fuse failure event
		Blackout event
	User-defined events ³	Users can set up event input data, thresholds, and event detection methods. Event setup can be performed only via communication.
		Up to 80 events can be set up.
		Event input data	Data measured at 0.2-second intervals
			Selectable among Voltage/Current/Power/ Etc.
		Threshold	Set by users
		Detection method	“Over” or “Under” condition set by users
	Module events	Determined using the data measured with a resolution of 0.01 seconds
		Digital input events	Rising or Falling edge detection events
		Analog input events	“Over” or “Under” events
			Thresholds set by users
	Up to 500 measurement events can be saved.
System events	Events on module control, communication status, setup, etc
	Up to 1,000 system events can be saved.
Aggregation of Measurement Data
Aggregation intervals	Fixed intervals	6 intervals (1 sec, 5 sec, 1 min, 5 min, 1 hr, and 6 hr)
	User-defined intervals	Supports 5 user-defined aggregation intervals
Aggregation for average values	Average value	Average of values measured at 0.2-second intervals
	Max/Min value	Max/Min values measured at 0.2-second intervals
Aggregation for the latched value ⁴	Last latched value	Provides the last measured data by latching the value
Data displayed on the LCD screen	Average value	Average of values measured at 0.2-second intervals (1-second aggregation interval)
	Max/Min value	Max/Min values of the average values within a 1-second aggregation interval after resetting the values
Connections of IO Modules
Users can check the measurement data and connection status of the connected IO modules with the function to automatically detect module connection status and set up module IDs.
Max. number of IO modules connectable to the back of the meter	4 (The total power consumption of IO modules should not exceed 8 W.)
External Communication with the Host System
Ethernet communication ⁵	Communicates with the host system using the Modbus TCP protocol at 100 Mbps
	Transfers a large amount of measurement data to the host system at high speeds
	Two ports allow for Ethernet connection between Accura 3700 devices.
	Wiring: Star, Daisy-chain, Ring topology (RSTP ⁶ support)
RS-485 communication	Communicates with the host system using the Modbus RTU protocol
	1,200 / 2,400 / 4,800 / 9,600 / 19,200 / 38,400 / 57,600 / 115,200 ⁷ bps

1. THD(Total Harmonic Distortion). Voltage THD:

, Current THD:

:fundamental voltage,

:fundamental current
2. TDD(Total Demand Distortion). Current TDD:

:peak demand current
3. When an event occurs, users can configure the corresponding digital output to operate.
4. For specific measurement parameters including energy, demand, and IO modules’ digital input and output data, the
device provides the data measured for the last 0.2 seconds by latching the data.
5. The built-in switch allows for Ethernet connection between Accura 3700 devices without the need for an external switch.
6. RSTP(Rapid Spanning Tree Protocol), IEEE 802.1D-2004
7. At 115,200 bps, a master can communicate with up to 16 slave devices, and the maximum distance between the master
and the slave is 600 m.

IO Modules

Accura 3700 comes with various IO modules that can be easily connected to the back of the device. Up to four modules can be attached regardless of the connection sequence, and the same types of modules can be redundantly connected. However, the total power consumption of IO modules should not exceed 8 W.
Model	Number of Channels		Specifications	Power Consumption
DIO module	Digital input	8	Internal DC 24 V power supply (self-excitation), redundant circuits	2.2 W
DIO module	Digital output ¹	2	Dry contact (external excitation)	2.2 W
DI module	Digital input	12	Internal DC 24 V power supply (self-excitation), redundant circuits	3.2 W
DO module	Digital output ¹	6	Dry contact (external excitation)	0.4 W
AI module	Analog input	6	DC 0 - 20 mA	0.6 W
AO module	Analog output ²	6	DC 4 - 20mA, DC 0 - 20 mA	3.6 W
A4D2 module	Analog output ²	4	DC 4 - 20 mA, DC 0 - 20 mA	2.6 W
A4D2 module	Digital output ¹	2	Dry contact (external excitation)	2.6 W
A2D4 module	Analog output ²	2	DC 4 - 20 mA, DC 0 - 20 mA	1.7 W
A2D4 module	Digital output ¹	4	Dry contact (external excitation)	1.7 W
RTD module	RTD input	3	PT100, PT1000 4-wire, 3-wire, 2-wire connection	0.8 W
ELD module	Leakage current input	6	AC 0 - 2,000 mA	0.7 W
ELD module	Digital output ¹	1	Dry contact (external excitation)	0.7 W
DC module	DC voltage input	1	0 - 200 V	2.0 W
	DC current input	2	-100 - 100 mV (shunt resistance required)
	Digital input	4	Internal DC 24 V power supply (self-excitation), redundant circuits
	Digital output ¹	1	Dry contact (external excitation)
Model	Function		Communication	Power Consumption
TEMP module	Collects temperature and humidity data from up to 6 Accura TSEN/THSEN modules connected		The RJ45 communication port is used to connect Accura 3700 TEMP to Accura TSEN/THSEN.	0.9 W ³
Accura TSEN	Measures temperature with the IC temperature sensor			0.12 W
Accura THSEN	Measures temperature and humidity with the IC temperature and humidity sensor			0.12 W
Operation
Digital input detection cycle	1 ms
Analog input detection cycle	1 ms
Analog output (measurement) control cycle	200 ms
Analog output (communication) control cycle	20 ms
Power Supply
Receives power from Accura 3700 POWER module

1. DO channels support latch, pulse, energy pulse and single pulse types.
2. Analog output values are generated by converting either the values measured by Accura 3700 or the values requested via
communication into values between 0 and 20 mA or 4 and 20 mA.
3. It indicates the power consumption when the TEMP module is connected to 6 Accura TSEN/THSEN devices.

Digital Power Quality Meter

Voltage Input
Port name	V₁, V₂, V₃, V_N
Connector type	Terminal block (M4 / bolt head size Ø7)
Wire specification / Torque	0.34 - 2.5 mm² (22 - 14 AWG), copper / 1.1 Nm (12 kgf-cm, 10 lbf-in)
Wire temp rating	70 ˚C or higher
Measurement category	III
Withstand voltage	AC 3,000 V RMS, 60 Hz for 1 minute
Impedance	10 MΩ/phase
Burden	0.01 VA/phase @ 220 V
Wiring method	3P4W, 3P3W, 1P3W, 1P2W
Current Input
Port name	1S, 2S, 3S ports on the power supply side, 1L, 2L, 3L ports on the load side (internal busbar)
Connector type	Terminal block (M4 / bolt head size Ø9)
Wire specification / Torque	2.5 - 6.0 mm² (14 - 10 AWG), copper / 1.9 Nm (20 kgf-cm, 17 lbf-in)
Wire temp rating	70 ˚C or higher
Rated current	5 A nominal/10 A full scale 3~ continuous	Accura 3700-5A	per UL 61010, 100 A for 1 second (thermal)
	1 A nominal/2 A full scale 3~ continuous	Accura 3700-1A
Burden	0.01 VA/phase @ 10 A
Basic Measurement
Frequency measurement	Measuring range	42 - 69 Hz
Basic measurement	Measurement cycle(gapless)	0.2 sec (12 cycles @ 60 Hz, 10 cycles @ 50 Hz)
Voltage	Sampling	512 samples/cycle
	Measuring range(Accuracy guaranteed)	AC 35 - 277 V L-N (Line-to-neutral)
		AC 60 - 480 V L-L (for unearthed Delta ¹ & Y systems)
	Accuracy	±0.2 % Reading
	Minimum measured value	5 V L-N / 9 V L-L
	Measurement data	Line-to-neutral, Line-to-line voltage
		Fundamental, Harmonics (up to the 50th order) ²
		Phasor diagram, THD
		Symmetrical components (positive-, negative-, zero-sequence components)
		Unbalance according to symmetrical components / the NEMA standard
Residual voltage	Measuring method	Calculated from the sum of the three-phase voltages (supported only for 3P4W and 1P3W)
	Measurement data	RMS, Fundamental
	Accuracy / Operating range	±0.2 % Un ³ / Up to 277 V L-N
Current	Sampling	256 samples/cycle
	Measuring range(Accuracy guaranteed)	1 % In - 200 % In ⁴	Accura 3700-5A
		5 % In - 200 % In ⁴	Accura 3700-1A
	Accuracy	±0.2 % Reading
	Minimum measured value	5 mA
	Measurement data	Phase current
		Fundamental, Harmonics (up to the 50th order)
		Phasor diagram, THD, TDD
		Symmetrical components (positive-, negative-, zero-sequence components)
		Unbalance according to symmetrical components / the NEMA standard
Residual current	Measuring method	Calculated from the sum of the three-phase currents
	Measurement data	RMS, Fundamental
	Accuracy / Operating range	±0.2 % In / Up to 200 % of phase current In
Power	Active power accuracy	IEC 61557-12 Class 0.2
	Reactive power accuracy	IEC 61557-12 Class 1
	Apparent power accuracy	IEC 61557-12 Class 0.2
Energy	Active energy	Accuracy	IEC 62053-22 Class 0.2S
		Type	Received, Delivered, Net, Sum(total) energy
	Reactive energy	Accuracy	IEC 62053-24 Class 0.5S
		Type	Energy in quadrant 1, 2, 3 and 4
	Apparent energy accuracy	IEC 61557-12 Class 0.2
Demand	Current, Active power ⁵, Apparent power	Demand, Peak demand, Predicted demand ⁶
	Demand time setup	Demand time = Demand subinterval * the number of demand subintervals
Aggregation of Measurement Data
Aggregation intervals	Fixed intervals	Supports 6 fixed intervals (1 sec, 5 sec, 1 min, 5 min, 1 hr, and 6 hr)
	User-defined intervals	Supports 5 user-defined aggregation intervals
Aggregation for average values	Average value	Average of values measured at 0.2-second intervals
	Max/Min value	Max/Min values measured at 0.2-second intervals
Aggregation for the latched value ⁷	Last latched value	Provides the last measured data by latching the value
Data displayed on the LCD screen	Average value	Average of values measured at 0.2-second intervals within a 1-second aggregation interval
	Max/Min value	Max/Min values of the average values within a 1-second aggregation interval after resetting the values
Power Quality
Dip/Swell	Measured value/threshold	RMS voltage (refreshed every cycle)	Threshold: set up by users
PQ Curve	Measured value/threshold	RMS voltage (refreshed every cycle)	Dip/Swell threshold: 90/110 % of Vref
	Curve types	SEMI F47, IEC 61000-4-11/34 Class 3, ITIC
Volt./Curr. harmonics	Harmonics order	Up to the 50th order
	Measurement data	Magnitude of each harmonic up to the 50th order, THD, Current TDD, Crest factor, K-factor
Unbalance (Volt., Curr.)	Measurement data	Unbalance according to the NEMA standard
		Negative-/zero-sequence unbalance according to symmetrical components
Phasor diagram	Voltage/current	Phasor
Waveform	Voltage/current	Data available via communication: 12 cycles of waveforms (128 samples/cycle)
		Data available via the LCD screen: 2 cycles of waveforms (128 samples/cycle)
Events
Power quality events	Types	Dip/Swell, PQ curve
	Up to 500 power quality events can be saved.
Measurement events	Voltage status events	Types	Phase open, fuse failure, and blackout events
		Event detection/time delay	Determined using the voltage/current data measured at 0.2-second intervals (definite time: 1 sec)
	User-defined events ⁸	Event input data	Data measured at 0.2-second intervals Selectable among Voltage/Current/Power/Etc.
		Threshold	Set by users
		Detection method	“Over” or “Under” condition set by users
		Number of event channels	80
	Module events	Types	Digital input events, analog input events
		Event detection	Determined using the data measured with a resolution of 0.01 sec
	Up to 500 measurement events can be saved.
System events	Events on module control, communication status, setup, etc.
	Up to 1,000 system events can be saved.
IO Module Control
Module control	Number of connectable modules: up to 4 modules ⁹
	Automatic detection of module status, module ID setup function
	Collects measurement data and status information from connected IO modules
Display
LCD	Type	5.0" Color TFT LCD
	Resolution	800 x 480 pixels
	Additional features	LED backlight & touch panel
External Communication with the Host System
Ethernet communication	Protocol	Modbus TCP protocol
	Port	2 ports, Ethernet switching ¹⁰
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP ¹¹
	Cable length	Up to 100 m
	Bit rate	100 Base-TX (100 Mbps/Full Duplex)
	Wiring methods	Star, daisy-chain, ring topology (RSTP ¹² support)
	Max. number of connectable modules	20 (Daisy-chain connection)
RS-485 communication	Protocol	Modbus RTU protocol
	Port	1 port / Ta, Tb, SG (Shield-Ground)
	Connector type	Push-in connector	0.08 - 2.5 mm² (28 - 14 AWG)
	Communication cable	UL 2919 RS-485 1P / 2P 24 AWG
	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 / 115,200 bps ¹³
	Max. number of connectable modules	32 per bus ¹³
Power (Supplied from the POWER Module)
Port name	L+, N-
Connector type	Push-In connector (pluggable)
Wire specification / Torque	0.25 - 4.0 mm² (24 - 12 AWG), copper / 0.51 Nm (5.2 kgf-cm, 4.5 lbf-in)
Wire temp rating	70 ˚C or higher
Power supply voltage (Us) ¹⁴	AC 100 - 240 V 50/60 Hz, DC 100 - 300 V, CAT II
Operating voltage range	0.9 x Us - 1.1 x Us
Power Consumption	Max. 7 W	When there are no IO modules connected
	Max. 15 W ¹⁵	When 4 IO modules are connected
Withstand voltage	AC 3,000 V RMS, 60 Hz for 1 minute
Operating environment	Pollution degree 2
Inrush current ¹⁶	Peak 31 A, duration no more than 1 ms (AC 220 V)
	Peak 11 A, duration no more than 200 μs (DC 110 V)
General
Weight	700 g (including the POWER module)

1. For Delta connections, do not exceed 480 V ungrounded or 240 V corner grounded.
2. The measured harmonic component indicates the magnitude of line-to-line voltage in 3P3W mode and the magnitude of line-to-neutral voltage in 3P4W mode.
3. The rated voltage Un is 277 V Line-to-neutral.
4. The rated current In is 5 A/1 A.
5. For active power demand, Received or Net active power can be selected.
6. The predicted demand is calculated based on the thermal demand. The response time for the thermal demand can be set up.
7. For specific measurement parameters, including energy, demand, and IO modules’ digital input and output data, the device provides the data measured for the last 0.2 seconds by latching the data.
8. Event setup can be performed only via communication.
9. The total power consumption of Accura 3700 IO modules should not exceed 8 W.
10. The built-in Ethernet switch allows for Ethernet connection between Accura 3700 devices without the need for a separate external switch.
11. FTP(Foiled Shielded Twisted Pairs), STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs)
12. RSTP(Rapid Spanning Tree Protocol), IEEE 802.1D-2004.
13. At 115,200 bps, a master can communicate with up to 16 slave devices, and the maximum distance between the master and the slave is 600 m.
14. The device conforms to UL standards for the tested AC power supply voltage.
15. It indicates the maximum power consumption of connected modules, including Accura 3700 IO modules.
16. When installing fuses on the power line, it is recommended to use fuses that are UL-listed with an RK5 class or higher and are rated at 2 A/500 V.

General Specifications of IO Modules

Digital Input
Item	Description
Connector type	Screw-type terminal (pluggable)
Wire specification / Torque	0.25 - 4.0 mm² (24 - 12 AWG) / 0.51 Nm (5.2 kgf-cm, 4.5 lbf-in)
Input type	Internal DC 24 V power supply (self-excitation)
Current draw	1st channel : 10 mA, other channels: 5 mA
Insulation	Max. AC 2,000 V for 1 minute
Minimum pulse width	100 ms (Configurable)
Digital Output
Item	Description
Connector type	Screw-type terminal (pluggable)
Wire specification / Torque	0.25 - 4.0 mm² (24 - 12 AWG) / 0.51 Nm (5.2 kgf-cm, 4.5 lbf-in)
Output type	Dry contact (external excitation)
Maximum rating	AC/DC 240 V 350 mA (max. 1 A) ¹
Insulation	Max. AC 3,000 V for 1 minute
Output signal type	Latch, Pulse, Energy Pulse, Single Pulse
Minimum pulse cycle	20 ms
Minimum pulse width	10 ms
DC 0 - 20mA Analog Input
Item	Description
Connector type	Screw-type terminal (pluggable)
Wire specification / Torque	0.25 - 4.0 mm² (24 - 12 AWG) / 0.51 Nm (5.2 kgf-cm, 4.5 lbf-in)
Input type	DC current 0 - 20 mA
Internal input resistance	150 Ω
Accuracy	±0.5 % Full scale	Full Scale: 20 mA
DC 0 - 20mA Analog Output
Item	Description
Connector type	Screw-type terminal (pluggable)
Wire specification / Torque	0.25 - 4.0 mm² (24 - 12 AWG) / 0.51 Nm (5.2 kgf-cm, 4.5 lbf-in)
Output type	DC current 0 - 20 mA
Allowable load resistance	No more than 450 Ω
Accuracy	±0.5 % Full scale	Full Scale: 20 mA

1. It indicates the Peak AC or DC value. Max. 1 A represents the current flow occurring once during a current-carrying time of 100 ms.

Specifications of Individual IO Modules

DIO Module
Digital Input			Digital Output
Number of channels	8 (redundant circuits per channel) ¹		2
Port name	DI₁ DI₂ DI₃ DI₄ DI_G / DI₅ DI₆ DI₇ DI₈ DI_G ²		DO₁ DO_1G / DO₂ DO_2G ³
Power Consumption	2.2 W
DI Module
Digital Input
Number of channels	12 (redundant circuits per channel) ¹
Port name	DI₁ DI₂ DI₃ DI₄ DI_G / DI₅ DI₆ DI₇ DI₈ DI_G / DI₉ DI₁₀ DI₁₁ DI₁₂ DI_G ²
Power Consumption	3.2 W
DO Module
Digital Output
Number of channels	6
Port name	DO₁ DO_1G / DO₂ DO_2G / DO₃ DO_3G / DO₄ DO_4G / DO₅ DO_5G / DO₆ DO_6G ³
Power Consumption	0.4 W
AI Module
Analog Input
Number of channels	6
Port name	AI₁ AI_1G / AI₂ AI_2G / AI₃ AI_3G / AI₄ AI_4G / AI₅ AI_5G / AI₆ AI_6G ⁴
Accuracy	±0.5 % Full scale		Full scale: 20 mA
Minimum measured value	0.5 % Full scale
Power Consumption	0.6 W
AO Module
Analog Output
Number of channels	6
Port name	AO₁ AO_1G / AO₂ AO_2G / AO₃ AO_3G / AO₄ AO_4G / AO₅ AO_5G / AO₆ AO_6G
Accuracy	±0.5 % Full scale		Full scale: 20 mA
Power Consumption	3.6 W
A4D2 Module
Analog Output			Digital Output
Number of channels	4		2
Port name	AO₁ AO_1G / AO₂ AO_2G / AO₃ AO_3G / AO₄ AO_4G		DO₁ DO_1G / DO₂ DO_2G ³
Accuracy	±0.5 % Full scale (Full scale: 20 mA)
Power Consumption	2.6 W
A2D4 Module
Analog Output			Digital Output
Number of channels	2		4
Port name	AO₁ AO_1G / AO₂ AO_2G		DO₁ DO_1G / DO₂ DO_2G / DO₃ DO_3G / DO₄ DO_4G ³
Accuracy	±0.5 % Full scale (Full scale: 20 mA)
Power Consumption	1.7 W
DC Module
DC Voltage/Current Input
Number of channels	3
Port name	I_OUT+ I_OUT- / I_BAT+ I_BAT- / V_DC+ V_DC- ⁵
DC Shunt resistance	Max. DC 100 mV		Full scale: 100 mV
DC Voltage	Max. DC 200 V		Full scale: 200 V
Accuracy	±0.5 % Full scale
Digital Input			Digital Output
Number of channels	4 (redundant circuits per channel) ¹		1
Port name	DI₁ DI₂ DI₃ DI₄ DI_G ²		DO DO_G
Power Consumption	2.0 W
RTD Module
RTD Analog Input
Number of channels	3
Port name	a₁ A₁ B₁ b₁ / a₂ A₂ B₂ b₂ / a₃ A₃ B₃ b₃
RTD sensor	PT100, PT1000
Wiring method	4-wire, 3-wire, 2-wire
Accuracy	±0.5 % Full scale		Range: -100 - 200 °C, Full scale: 200 °C
Minimum measured value	0.5 % Full scale
Power Consumption	0.8 W
ELD Module
ZCT Analog Input			Digital Output
Number of channels	6		1
Port name	Z₁ Z_1G / Z₂ Z_2G / Z₃ Z_3G / Z₄ Z_4G / Z₅ Z_5G / Z₆ Z_6G ⁴		DO, DO_G
Leakage current input	Voltage output type ZCT 200 mA / 100 mV @ 1.2 kΩ burden ⁶
Accuracy	±0.5 % Full scale	200 mA / 100 mV, Range: 0 - 2 A, full scale: 2 A
Minimum measured value	0.5 % Full scale
Power Consumption	0.7 W
TEMP Module
RJ45 communication port	Used to connect the TEMP module with Accura TSEN/THSEN
Connector type	RJ45 connector / RJ45 Ethernet cable
Protocol	Internal protocol
Connection with Accura TSEN/THSEN	Up to 6 Accura TSEN/THSEN devices can be connected in a daisy-chain.
Power Consumption	0.9 W ⁷
Accura TSEN/THSEN
RJ45 communication port	Used to connect the TEMP module to Accura TSEN/THSEN
Port name	RJ45A, RJ45B (RJ45A and RJ45B ports have the same functions.)
Connector type	RJ45 connector
Protocol	Internal protocol
Communication cable	Ethernet cable Cat 5e FTP ⁸
Cable length	Up to 100 m
Accura TSEN/THSEN ID	ID available for communication		1 - 6
	Standby ID		0 (default value, communication unavailable)
LED	Green		Blinks when the module operates normally
	Red		Blinks when the measured temperature exceeds the threshold and an event occurs
Power supply	Receives power from the TEMP module through the RJ45 communication cable
Current consumption	15 mA
Power Consumption	0.12 W
Accura TSEN
Temperature measurement
Temperature sensor	Located at the bottom end of the module
Accuracy	Typ. ±1.0 °C
Measuring range	-20 - 100 °C
Response time [τ 63%]	Max. 30 seconds
Accura THSEN
Temperature & Humidity measurement
Temperature & humidity sensor	Located at the bottom end of the module
Accuracy	Temperature		Typ. ±1.0 °C
	Humidity		Typ. ±2.0 % RH @25 °C
Measuring range	Temperature		-20 - 100 °C
	Humidity		0 - 100 % RH
Response time [τ 63%]	Max. 8 seconds

1. Each channel features redundant circuits. Thus when two inputs differ, the module processes the event as a redundancy error and provides maintenance notifications.
2. DI_G ports are internally connected and are the common ground terminals of all channels.
3. Each DO channel is electrically insulated.
4. The inputs of each channel feature differential inputs, and the common-mode voltage should be no more than 2 V.
5. The inputs of each channel feature differential inputs, and the common-mode voltage should be no more than 200 V.
6. The internal resistance(default: 1.0 kΩ) and burden resistance of the ZCT(default: 1.2 kΩ) can be set up.
7. It indicates the power consumption when the TEMP module is connected to 6 Accura TSEN/THSEN devices.
8. FTP(Foiled Shielded Twisted Pairs)

General Specifications

Environmental Conditions
Operating temperature	-20 - 60 ℃ (-4 - 140 ℉)
Storage temperature	-40 - 85 ℃ (-40 - 185 ℉)
Operating humidity	5 - 95 % (non-condensing)
Operating altitude	Up to 2,000 m
Operating environment	Pollution degree 2
Ingress protection against dust and water	IEC 60529 IP54 (Accura 3700)
General
Warranty period	2 years