Public Facility Testing
March 6, 2025
KPM312 Three Phase Multi Channel Energy Meter
KPM312 Three Phase Multi Channel Energy Meter adopts DIN 35MM rail type installation structure and LCD display. It integrates 4 channels three-phase electric parameter measurement.
KPM312 default communication is Modbus-RTU by RS485 interface. WiFi, 4G, Lora communication are optional. The meter can also expand relay output for each channel, temperature measurement for each channel.
Features
Functions of KPM312 Three Phase Multi Channel Energy Meter
- KPM312 Three Phase Multi Channel Energy Meter
- Multi channel measurement: 4 channel 3 phase loop power parameter measurement
- Communication protocol: Modbus-RTU, DL/T645, MQTT
- Optional function: 4 digital inputs and 4 digital outputs for each channel
- 4 temperature measurement for each channel
- 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.
Record function:
- Monthly average power factor and power data for the last three months.
- Demand and maximum and minimum data statics.
- Meter working time, load time statics.
Record function:
- Monthly average power factor and power data for the last three months.
- Demand and maximum and minimum data statics.
- Meter working time, load time statics.
KPM312 Three Phase Multi Channel Energy Meter
KPM312 Three Phase Multi Channel Energy Meter Technical Specification
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Working power source |
Operating Voltage |
AC 85-265V/ DC 80-310V |
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Rated power consumption |
< 3VA |
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Input voltage |
Rated voltage |
57.7/100V,220/380V,380/660V |
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Overvoltage capability |
1.2 times rated voltage allowed, continuous work; 2 times the rated voltage allowed 10S |
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Rated power consumption |
<0.5VA(per phase) |
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Measurement range |
LN：50~260VAC， LL：90~450VAC |
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Input current |
Rated current |
Default 5A, input range 1-6A; optional 1A, input range 1-1.2A |
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Overload capacity |
1.2 times rated current allowed, continuous work; 20 times the rated current allowed 1S |
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Rated power consumption |
＜0.75VA/phase（5A）; <0.45VA/phase (1A) |
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Measurement range |
5A：0~6A； 1A：0~1.2A |
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Power quality monitor |
Harmonic measurement |
U/I 2-51st harmonic distortion rate |
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Harmonic distortion rate |
Phase voltage，Phase current |
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Imbalance rate |
Voltage，Current |
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Measurement accuracy |
Voltage |
±0.2%（0.01V） |
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Current |
±0.2%（0.01A） |
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Active power |
±0.5%（0.01W） |
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Reactive power |
±2.0%（0.01var） |
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Power factor |
±0.5%（0.001） |
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Frequency |
±0.02 (0.01Hz) |
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Active energy |
±0.5%（0.1kwh） |
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Reactive energy |
±2.0%（0.1kvarh） |
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Temperature |
±1℃（1℃） |
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Communication |
communication port |
RS485，Photoelectric isolation interface |
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Communication protocol |
Modbus-RTU, 1200-38400BPS Probibus-DP，9600-12Mbps |
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DI & DO |
Switch value input |
4-way passive main line contact DI input, internal supply DC24V power supply |
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Relay output |
4-Way DO output, contact capacity 250VAC / 5A, 30VDC / 5A |
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Analog output |
Output range 4-20mA, overload 1.2 times |
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Temperature input |
Temperature range 0-100℃ |
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Working environment |
Operating temperature |
-25℃ ~ +70℃ |
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Storage temperature |
-30℃ ~ +75℃ |
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Relative humidity |
5% ~ 95% No condensation |
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Altitude |
Not more than 4000m |
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Electrical insulation |
Dielectric strength |
Power frequency voltage AC 2kV, working time 1 min |
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Insulation resistance |
＞50MΩ |
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Impact voltage |
5kV (Peak),1.2/50us |
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Electromagnetic Compatibility |
Electrostatic discharge immunity |
IEC61000-4-3, level 4 |
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Fast pulse group immunity |
IEC61000-4-4, level 4 |
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Surge immunity |
IEC61000-4-5, level 4 |
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Power frequency magnetic field immunity |
IEC61000-4-8, level 4 |
KPM312 Three Phase Multi Channel Energy Meter star system
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