MOEORW-CD300 On-Load Tap Changer Fault Diagnosis Device Send email to us

Overview

1.1 Device Introduction
The MOEORW-CD300 On-Load Tap Changer Fault Diagnosis Device (hereinafter referred to as MOEORW-CD300) is an intelligent electronic monitoring device. For decades, on-load tap changers have relied on outdated mechanical methods such as cam-linkage mechanisms, resulting in poor reliability and numerous tap changer incidents. As a socially responsible power monitoring enterprise, we have synthesized insights from diverse projects, studied and adopted new technologies across various fields, and integrated recent demands for online monitoring devices to design and manufacture the MOEORW-CD300 On-Load Tap Changer Fault Diagnosis Device.
The MOEORW-CD300 device enables real-time analysis and diagnosis of on-load tap changer operational status and tap position information. It provides maintenance guidance and predictive warning functions, ensuring safe, reliable, stable, and efficient operation of both the switch itself and the transformer.
1.2 Functional Configuration
Standard Features:
l Measurement and calculation of transformer single-phase/three-phase voltage, current, frequency, power, and other parameters;
l Monitoring of transformer tap changer position information (BCD/4~20mA/Bin/Gray);
l Statistics on tap changer position change frequency and duration;
l Monitoring of motor current and voltage for tap changer motor-driven mechanisms with torque calculation;
l Support for oil temperature monitoring via PT100/4-20mA sampling;
l Real-time calculation of tap changer contact electrical life and wear based on application protocols and condition monitoring data, with maintenance recommendations;
l Can interface with condition signals from oil purifiers, RS2001, gas relays, pressure relief valves, etc.;
l Monitors tap changer vibration and generates waveform spectra for diagnostic analysis; employs time-domain/frequency-domain analysis, overlap ratio, high/low-frequency energy ratio, and other algorithms for diagnostic evaluation;
l Calculates motor current MCI index per IEEE PC57.143, triggering alarms when exceeding normal index by 30%;
l Provides early warnings and alarms for monitoring data exceedances and switch failures;
l Supports IEC61850 (ed.2), Modbus, and DNP3.0 communication protocols;
l Performs transformer hotspot calculations and overload prediction based on top oil temperature and load current per IEC 60076-7; calculates transformer aging and service life using standard and manufacturer temperature rise curve parameters;
Expandable Functions:
l Oil moisture and acetylene/hydrogen monitoring;
l Oil contamination monitoring, including dielectric strength and particle size;
l Tap changer acoustic signature signal acquisition and analysis;
l Partial discharge monitoring with spectral analysis generation;
l Digital temperature-pressure combined sensor;
l Cooling system monitoring and control;
l Transformer DGA analysis;
l Tap changer online monitoring backend system supporting SCADA system data upload;