KPM33 OEM Wireless Three Phase DIN Rail Prepaid Energy Meter (RS485/WiFi/4G/LoRaWAN )

📶 IoT: RS485/ 4G / WiFi / LoRaWAN
⚙️ Modbus-RTU / MQTT
🎯 Class 1.0
  1. Bidirectional Energy Monitoring
  2. Optional RS485 / WiFi / 4G/ LoraWAN communication, Modbus-RTU / MQTT  protocol
  3. Remote Reading & Control
  4. Prepaid and Postpaid Functions
  5. Integrated DSP metering chip for Level B (Class 1.0) high measurement accuracy.
  6. 35mm DIN standard rail mounting, aesthetically pleasing and easy to install.
  7. Offline data storage function for wireless communications.
  8. Time of use energy statistics.

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Features

KPM33 Three-phase DIN Rail Prepaid Energy Meter

KPM33 Three phase WiFi 4G DIN Rail Prepaid Energy Meter features a built-in magnetic latching relay and prepaid function.It is designed for DIN-rail installation. In addition to measuring energy and other electrical parameters, it also allows for configuration of parameters such as time intervals and tariff periods. Optional RS485 ,WiFi, 4G, and LoraWAN communication options are available. It is widely used in government agencies, large public buildings, enterprises, and institutions.

KPM33 Three-phase DIN Rail Prepaid Energy Meter Topology Diagram

KPM33 Three-phase DIN Rail Prepaid Energy Meter Model

kpm33 energy meter model
kpm33 energy meter

KPM33 Wireless Three Phase Prepaid Energy Meter Technical Specification

Input voltage Rated voltage 3×220V/380V
Overall power consumption <2VA
Frequency range 45~65Hz
Input current Rated current 0.2-1 (80) A, max 100A
Frequency range 45~65Hz
Measurement accuracy Voltage ±0.2%(0.01V)
Current±0.2%(0.01A)
Active power±0.5%(0.1W)
Reactive power±2.0%(0.1var)
Active energy±0.5%(0.1kWh)
Reactive energy±2.0%(0.1kvarh)
Power factor±0.5%(0.001)
Frequency±0.02Hz(0.01Hz)
Clock Clock accuracy <0.5S/D
Communication Communication interface RS485/WIFI/4G
Communication protocol Modbus-RTU,1200~19200bps; Optional WiFi, 4G
Electrical insulation Power frequency withstand voltage AC2kV/min~1mA Input-output-power source
Insulation resistance>50MΩ
Impact voltage5kV (Peak),1.2/50us
Working environment Operating temperature -25℃ ~ +70℃
Relative humidity5%~95% No condensation
Storage temperature-30℃ ~ +75℃
AltitudeNo more than 4000m
Electromagnetic Compatibility Surge (impact) immunity IEC61000-4-5,Level4
Electrical fast burst immunityIEC61000-4-4,Level4
Electrostatic discharge immunityIEC61000-4-2,Level4
Power frequency magnetic field immunityIEC61000-4-8,Level4

Application Of KPM33 Wireless Three Phase Prepaid Energy Meter

kpm33 prepaid energy meter

KPM33 Wireless Three Phase Prepaid Energy Meter Download

KPM33 Specification

July 30,25

KPM33 User manual

July 30,25

Industrial Guide: KPM33 Three Phase Prepaid Metering & Cloud Management

Q1: How does the KPM33 Three Phase Prepaid Energy Meter manage prepayment for high-power industrial loads?

A: The KPM33 Three Phase Prepaid Energy Meter is a high-performance three-phase energy meter specifically designed for commercial and industrial prepayment. It supports high-current monitoring and features an internal high-capacity magnetic latching relay for remote tripping. This allows property managers to manage large-scale power loads safely and efficiently through a non-card remote recharge system.

Q2: What wireless communication protocols are available for KPM33 Three Phase Prepaid Energy Meter?

A: To ensure flexible deployment in various environments, the KPM33 Three Phase Prepaid Energy Meter offers multiple modular communication options, including 4G, WiFi, and LoRaWAN, alongside a standard RS485 (Modbus-RTU) port. This multi-protocol support allows the meter to connect to energy management clouds without complex gateway wiring, perfect for dispersed factory or shopping mall installations.

Q3: Can the KPM33 Three Phase Prepaid Energy Meter prevent electricity theft or tampering?

A: Yes. The KPM33 Three Phase Prepaid Energy Meter is equipped with advanced anti-tampering features. It can detect and log events such as cover opening, terminal bypass, or reverse wiring. Combined with real-time alerts sent via the wireless network, it provides a secure and transparent solution for utility billing and energy cost recovery.


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