AMC72-E4 Panel-Mounted Multi-Function Power Meter
Characteristic
Communication
Interface: RS485
Protocol: Modbus-RTU
Baud Rate: 1200–38400bps
Display
LED Digital Display
System Time Display
Parameter Setting and Control via Keys
Rated U and l
Three-phase Four-wire
Rated Voltage: AC 3×57.7V/100V, AC 3×220V/380V
Rated Current: AC 1A or 5A
Frequency: 45–65Hz
Voltage Overload: 1.2× continuous, 2× for 1s
Current Overload: 1.2× continuous, 10× for 1s
General
AMC72-E4/KC is a 72-size panel-mounted multifunction power meter designed for electrical parameter measurement, energy metering and power monitoring in three-phase four-wire systems.It measures three-phase voltage and current, zero-sequence voltage and current, active, reactive and apparent power, power factor, frequency, voltage phase angle, voltage/current unbalance, forward and reverse power, and four-quadrant energy.With RS485 Modbus-RTU communication, it can be integrated into power monitoring systems, SCADA systems and energy management systems.
Function
Connection
Three-phase four-wire
Frequency
45–65Hz
Voltage
Rated Voltage: AC 3×57.7/100V, AC 3×220/380V
Overload: 1.2 times rated value continuously; 2 times rated value for 1s
Power Consumption: <0.5VA
Current
Rated Current: AC 1A, 5A
Overload: 1.2 times rated value continuously; 10 times rated value for 1s
Power Consumption: <0.5VA
Accuracy
Voltage: Class 0.2
Current: Class 0.2
Active Power: Class 0.5
Active Energy: Class 0.5
Reactive Power: Class 1.0
Reactive Energy: Class 1.0
Frequency: ±0.05Hz
2nd–31st Harmonics: ±1%
Communication
Interface: RS485
Protocol: Modbus-RTU
Baud Rate: 1200–38400bps
Switching Input
Dry Contact Input
Built-in Power Supply
Switching Output
Relay Normally Open Contact
Contact Capacity: AC 250V/3A, DC 30V/3A
Analog Output
4–20mA
Auxiliary Power Supply
AC/DC 85–265V
DC 24V ±20%
DC 48V ±20%
Power Consumption: ≤10VA
Environment
Operating Temperature: -25°C to +65°C
Storage Temperature: -40°C to +80°C
Humidity: ≤93%RH, non-condensing
Altitude: ≤2500m
Wiring
Installation
Typical connection
| Parameter | Specification |
|---|---|
| System | 3-phase 4-wire |
| Frequency | 45–65 Hz |
| Rated Voltage | AC 3×57.7/100 V, AC 3×220/380 V |
| Voltage Overload | 1.2× rated value continuously; 2× rated value for 1 s |
| Voltage Power Consumption | <0.5 VA |
| Rated Current | AC 1 A or 5 A |
| Current Overload | 1.2× rated value continuously; 10× rated value for 1 s |
| Current Power Consumption | <0.5 VA |
| Voltage Accuracy | Class 0.2 |
| Current Accuracy | Class 0.2 |
| Active Power Accuracy | Class 0.5 |
| Reactive Power Accuracy | Class 1.0 |
| Active Energy Accuracy | Class 0.5 |
| Reactive Energy Accuracy | Class 1.0 |
| Frequency Accuracy | ±0.05 Hz |
| Harmonic Measurement Accuracy | ±1% |
| Communication | RS485, Modbus-RTU |
| Baud Rate | 1200–38400 bps |
| Energy Pulse Output | Open-collector optocoupler output |
| Pulse Constant | 10000 imp/kWh, settable |
| Switching Input | Dry contact input, built-in power supply |
| Switching Output | Relay normally open contact |
| Relay Contact Capacity | AC 250 V/3 A; DC 30 V/3 A |
| Analog Output | 4–20 mA |
| Auxiliary Power Supply | AC/DC 85–265 V; DC 24 V ±20%; DC 48 V ±20% |
| Power Consumption | ≤10 VA |
| Operating Temperature | -25°C to +65°C |
| Storage Temperature | -40°C to +80°C |
| Humidity | ≤93% RH, non-condensing |
| Altitude | ≤2500 m |
| Insulation Resistance | >100 MΩ |
| Faceplate Size | 75 × 75 mm |
| Panel Cutout | 67 × 67 mm |
| Depth | 94.3 mm |
| Function | AMC72-E4/KC |
|---|---|
| Three-phase Voltage | ✓ |
| Zero-sequence Voltage | ✓ |
| Three-phase Current | ✓ |
| Zero-sequence Current | ✓ |
| Three-phase Active Power | ✓ |
| Total Active Power | ✓ |
| Three-phase Reactive Power | ✓ |
| Total Reactive Power | ✓ |
| Three-phase Apparent Power | ✓ |
| Total Apparent Power | ✓ |
| Three-phase Power Factor | ✓ |
| Total Power Factor | ✓ |
| Frequency | ✓ |
| Voltage Phase Angle | ✓ |
| Voltage Unbalance | ✓ |
| Current Unbalance | ✓ |
| Forward / Reverse Power | ✓ |
| Four-quadrant Energy Metering | ✓ |
| System Time Display | ✓ |
| RS485 Communication | ✓ |
| Modbus-RTU | ✓ |
| 2DI + 2DO + 1 Energy Pulse Output (K) | Optional |
| 4DI + 2DO (K) | Optional |
| Event Record (SOE) | Optional |
| 2nd–31st Harmonic & Total Harmonic Measurement (H) | Optional |
| 2DI + 2DO + 1 Analog Output (KM) | Optional |
