Partial Discharging Monitoring

Product catalog summary

Introduction
The SCM-PD3000 is a partial discharge monitor designed for high-voltage electrical equipment such as transformers, switchgear, and cable joints. It detects partial discharge signals using UHF, TEV, and ultrasonic sensors, providing fast measurement and strong anti-interference capabilities.

Main Features

Wall-mounted installation with multi-level alarm threshold settings.
Waveform data recording and compatibility with RS 485, Modbus-RTU, and SCADA systems.
Automatic data acquisition and analysis with high measurement accuracy.
Supports up to 96 sensors with optional wireless or wired connections.

Working Principle
The device operates by detecting partial discharge signals through transient earth waves and ultrasonic emissions, providing real-time monitoring and data analysis.

Technical Characteristics

Power supply options: 85-265Vac/dc, 20-60Vdc, with power consumption under 6W.
Communication via RS-485 and MODBUS-RTU, with digital outputs for external alarms.
Operates in temperatures from -10 to +60°C and humidity levels of 20% to 95% RH.
Compact dimensions with easy installation using strong magnets or wall mounts.

Sensors

TEV Sensor: Detects range from 0 to 60 dBmV with a frequency response of 3 to 100MHz.
Ultrasonic Sensor: Detects range from -7dBμV to 68dBμV with a center frequency of 40 KHz.

Catalog excerpts

I SWITCHGERA PROTECTION RELAY SCM-PD3000 PARTIAL DISCHARGE MONITOR i Introduction Partial discharge is a kind of pulse discharge, which will produce a series of physical phenomena and chemical changes such as light, sound, electrical and mechanical vibration in the interior and surrounding space of power equipment. When insulation defects appear inside high-voltage electrical equipment, it will be accompanied by the generation of partial discharge signals. SCM-PD3000 partial discharge monitor can be used with UHF sensor, TEV sensor, Ultrasonic sensor and online detection of partial discharge of high voltage equipment such as transformers, high voltage switchgear, and cable joints. Easy to carry, fast measurement, strong anti-interference ability, easy to use on site. • Wall-mounted installation. • Alarm multi-level threshold setting. • Waveform data recording function. • RS 485, Modbus-RTU, SCADA systems. • Sensor detects TEV and audible ultrasonic. • Automatic PD data acquisition and analysis. • 2*DO NC & NO contact for external alarm trig. • Anti-interference performance and high measurement accuracy. • Joint detection of partial discharge signals by transient earth waves. • HMI supports max 96pcs sensor, optional wireless, and wired(RS485) connection. Technology of Electrical Automatic

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