Technical Specifications Direct input voltage maximum:600 VAC CT secondary input:1 A /5 A selectable Control power supply:90‑300 VAC /70‑250 VDC Frequency measurement range:45‑65 Hz Harmonic analysis up to 63rd harmonic 4 programmable relay outputs,4 digital inputs Communication interfaces: dual rear RS485, front RS232 Supported protocol: Modbus RTU, DNP3.0 Operating Temperature:‑20 °C to +60 °C Storage Temperature:‑40 °C to +85 °C Relative Humidity:5%‑95%, non‑condensing Mechanical Dimension:144 mm ×144 mm standard panel‑mount housing Certifications: CE, UL
Functional Features Measures voltage, current, active/reactive power, power factor, energy and demand values. Captures voltage swell, sag and transient disturbance events. Stores up to 98000 data logs and 500 disturbance records. Supports configurable alarm threshold setpoints. Local keypad‑LCD parameter programming. Full compatibility with EnerVista configuration software. Harmonic spectrum calculation and display function.
Application Scenarios Power distribution feeder monitoring points. Transformer cabinet metering sites. Generator set power quality monitoring. Capacitor bank compensation control sites. Motor control center electrical monitoring. Commercial building energy management systems. Industrial plant power quality assessment projects.
Performance Parameters Voltage and current measurement accuracy: ±0.2%. Power measurement accuracy: ±0.4%. Energy metering accuracy: ±0.5%. Disturbance event capture time resolution: 1 ms.
Working Principle Voltage and current signals are acquired from external voltage transformers and current transformers. Internal analog‑to‑digital conversion chip samples real‑time electrical waveforms. Microprocessor calculates power parameters, harmonic components and power disturbance events.
Installation Requirements Panel cut‑out installation dimension:138 mm ×138 mm. Install inside dust‑proof industrial control cabinet. Signal cables shall adopt shielded twisted‑pair wiring. Keep high‑voltage power cables physically separated from communication signal cables.
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