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The system (IED) is a high reliability of the insulation on-line monitoring equipment, continuous, real-time, on-line monitoring of high voltage casing, high voltage transformer power equipment such as dielectric loss, the last screen current and capacity, Insulation conditions, and according to the horizontal comparison of similar equipment, the same equipment, the vertical comparison, and the development trend of insulation characteristics, early detection of latent failure, early warning, to avoid the occurrence of accidents, for the regular maintenance of equipment to the state maintenance of the transition to provide technical Guarantee. The system consists of voltage monitoring unit, capacitive equipment monitoring unit, environmental monitoring unit and data processing unit.
| Monitoring unit name | Monitoring parameters | Measuring range | Measurement accuracy |
| System voltage monitoring unit | Bus voltage | 35kV~1000kV | ±0.5% |
| Harmonic voltage | 3、5、7、9?次 | ±2% | |
| System frequency | 45~65Hz | ±0.01Hz | |
| Capacitive equipment monitoring unit | The end of the screen current | 0.1mA~1000mA | ±1% OR 100μA |
| Dielectric loss | 0.1%~30% | ±0.1% | |
| Equivalent capacitance | 50pF~50000pF | ±1% OR 50 pF | |
| Site environmental monitoring unit | Ambient temperature | -40℃~80℃ | ±1% OR 0.5℃ |
| Environment humidity | 0~100%RH | ±2% |
Tel：400-8269-696
E-mail：lgjc@lgom.com.cn
