DCEM-4MS Dual-channel DC energy meter is a highly integrated product for DC parameter measurement. When used with a shunt or external Hall sensor, it can accurately measure 1-2 channels DC voltages and 1-2 channels DC currents (with direction), power, total electricity, each single-circuit electricity, and other electrical parameters, and can be equipped with optional DI modules.
DCEM-4MS has RS485 and supports MODBUS-RTU communication protocol, which can upload the collected data and equipment status. DCEM-4MS is widely used in electric power, communications, railways, transportation, environmental protection, steel, and other industries to monitor the current and power consumption of DC equipment.
Function of DCEM-4MS
Measurement and calculation functions such as DC voltage, current, power, and forward and reverse electric energy.
Multi-rate electric energy metering function
Maximum demand measurement and demand time recording
Maximum value record: single-phase voltage, current, power maximum and minimum values, and occurrence time
Time-stamped event recording
power freeze
Supports RS485 interface MODBUS-RTU communication protocol, and one more RS485 port can be selected
2-way switch input monitoring, 2-way relay output (optional)
Supports second DC voltage and current input (optional)
Feature of DCEM-4MS
Various anti-interference measures.
Convenient and flexible system wiring.
Easy to install, 35mm standard DIN rail installation.
Powerful data collection and processing capabilities.
Intuitive Large-size LCD screen real-time measurement information.
High security and good reliability
A variety of anti-interference measures have been adopted during the design process to ensure stable operation in the power system environment. The electrostatic discharge immunity meets level 4; the electrical fast transient burst immunity meets level 4; the high voltage impact immunity meets level 4; the surge immunity meets level 3; the panel protection level meets IP54, and the shell protection level meets IP20.
| Performance | Parameter | ||
| Enter Measurement Display | Distribution network | DC | |
| Voltage | Rating | 0-1000V | |
| Overload | Measurement: 1.2 times Instantaneous: 10 times/1s | ||
| Impedance | >1 kΩ/V | ||
| Rating | DC Shunt：0-75mV | ||
| current | Hall current sensor：5A、20A、50A、100A、200A、300A、400A、500A optional | ||
| Overload | Measurement: 1.2 times Instantaneous: 2 times/10s | ||
| Impedance | <100mΩ | ||
| Accuracy level | Class 1 or 0.5 | ||
| Clock (optional): | The daily error is less than 0.5 seconds | ||
| Display | Segment LCD display | ||
| Power supply | range | AC/DC85V~265V | |
| power consumption | ≤4VA | ||
| Output | Digital interface | RS-485, MODBUS-RTU protocol (optional 2-Channels RS-458) | |
| Pulse output | Optional 1 channel active electric energy pulse output,1 channel second pulse output | ||
| DI input (optional) | 2 DI, dry contact mode | ||
| Ri<500Ω turns on, Ri>100kΩ turns off | |||
| DI output (optional) | 2 DO relay | ||
| relay contact capacity: 5A/250V AC; 5A/30V DC | |||
| Environment | Working environment | -25~55°C Altitude ≤2000m,98%RH, no condensation, no corrosive gas | |
| Storage environment | -30~75°C | ||
| Safety | Withstand voltage | Input and power supply>4kV; input and output>4kV.power supply and output>4Kv. | |
| Insulation | Power supply to shell > 5MΩ | ||
Dimension of EV charging Station DC energy meter
