KPM37 Wireless 4G WiFi LoRa Din Rail Three Phase Energy Meter

KPM37 Wireless 4G WiFi LoRa Din Rail Three Phase Energy Meter adopts DIN 35MM rail type installation structure and LCD display. It integrates three-phase power parameter measurement, power quality analysis and time statistics. Optional RS485, WiFi, 4G, Lora communication. It is widely used for reconstruction sites or where the installation space is very small and communication cable laying is difficult.

Features

1. DIN Rail installation structure, small size, easy to install.

2. CT / PT programmable, can support up to 6000A current measurement.

3. Optional wireless WIFI / 4G communication, save gateway costs for data integration.

4. Time of Use multi rate energy consumption measuring, can be used for up to 5 rates per day.

5. Rich extension functions, including temperature, leakage and other monitoring functions.

Functions of KPM37 Wireless 4G WiFi LoRa Din Rail Three Phase Energy Meter

Communication protocol: Modbus-RTU, DL/T645, MQTT
Optional function: 2 digital inputs; 2 digital outputs;
4 wires temperature measurement; residual current measurement.
Optional connection: Lora, WiFi, 4G, RS485
Installation method: DIN rail 35MM three phase energy meter

Measurement: three phase UL-L, UL-N, I, F, PF, P, Q, S, four-quadrant power, etc.
High accuracy: U Class 0.2; I Class 0.2; P Class 0.5S.
Active energy Class 0.5S.
Reactive energy Class 2.0.

Power quality analysis:

Voltage deviation
Demand and max&min value
Voltage/Current imbalance
Phase angle measurement
2-31st harmonics content and THD

Record function:

8 sets of alarm records
100 Fault alarm record
100 digital inputs and outputs SOE event record
12-month multi rate power consumption record

KPM37 Wireless 4G WiFi LoRa Din Rail Three Phase Energy Meter Model selection

KPM37 Wireless 4G WiFi LoRa Din Rail Three Phase Energy Meter Technical Specification

Working power source	Operating Voltage	AC 85-265V/ DC 80-310V
Working power source	Rated power consumption	< 3VA
Input voltage	Rated voltage	57.7/100V,220/380V,380/660V
	Overvoltage capability	1.2 times rated voltage allowed, continuous work; 2 times the rated voltage allowed 10S
	Rated power consumption	<0.5VA(per phase)
	Measurement range	LN：10~400VAC， LL：90~660VAC
Input current	Rated current	Default 5A, input range 1-6A; optional 1A, input range 1-1.2A
	Overload capacity	1.2 times rated current allowed, continuous work; 20 times the rated current allowed 1S
	Rated power consumption	＜0.75VA/phase（5A）; <0.25VA/phase (1A)
	Measurement range	5A：0~6A； 1A：0~1.2A
Power quality monitor	Harmonic measurement	U/I 2-31^st harmonic distortion rate
	Harmonic distortion rate	Phase voltage，Phase current
	Imbalance rate	Voltage，Current
Measurement accuracy	Voltage	±0.2%（0.01V）
	Current	±0.2%（0.01A）
	Active power	±0.5%（0.01W）
	Reactive power	±2.0%（0.01var）
	Power factor	±0.5%（0.001）
	Frequency	±0.02 (0.01Hz)
	Active energy	±0.5%（0.1kwh）
	Reactive energy	±2.0%（0.1kvarh）
	Temperature	±1℃（1℃）
Communication	communication port	RS485，Photoelectric isolation interface; Optional WIFI/4G/LORA
Communication	Communication protocol	Modbus-RTU, 1200-38400BPS Probibus-DP，9600-12Mbps
DI & DO	Switch value input	2-way passive main line contact DI input, internal supply DC24V power supply
	Relay output	2-Way DO output, contact capacity 250VAC / 5A, 30VDC / 5A
	Analog output	Output range 4-20mA, overload 1.2 times
	Temperature input	Temperature range 0-100℃
Working environment	Operating temperature	-25℃ ~ +70℃
	Storage temperature	-30℃ ~ +75℃
	Relative humidity	5% ~ 95% No condensation
	Altitude	Not more than 4000m
Electrical insulation	Dielectric strength	Power frequency voltage AC 2kV, working time 1 min
	Insulation resistance	＞50MΩ
	Impact voltage	5kV (Peak),1.2/50us
Electromagnetic Compatibility	Electrostatic discharge immunity	IEC61000-4-3, level 4
	Fast pulse group immunity	IEC61000-4-4, level 4
	Surge immunity	IEC61000-4-5, level 4
	Power frequency magnetic field immunity	IEC61000-4-8, level 4

KPM37 Three Phase Energy Meter 4 wire star system：Direct wiring without voltage transformer(PT)

KPM37 Three Phase Energy Meter Triangle system Delta wiring：With PT wiring

KPM37 Specification

May 19, 2025

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