中文
Product overview
Vs-rxzx capacitive equipment and lightning arrester online monitoring system adopts bus control technology, which is composed of two parts: the measurement monitoring system installed in the substation and the intelligent unit installed in the operation site. Through the public telephone network, the monitoring data of several substation monitoring systems can be collected to the data management and diagnosis system of the upper layer. Realize on - line monitoring of high voltage equipment insulation in multiple substations.
Insulation monitoring system is usually composed of user computer, substation central monitor and several local measuring units. Its structure block diagram is shown in the figure. Among them:
■ Technical parameters
| Device name | Monitoring parameters | Measuring range | Accuracy of measurement |
| System voltage | Bus voltage | 35kV ～ 750kV | 0.5% |
| The system frequency | 45 ～ 65Hz | 0.01% | |
Capacitive equipment (CT, CVT, Bushing, coupling capacitor) | Screen at the end of the current | 100μA ～ 1000mA | 0.5% |
| Dielectric loss | -50% ～ 50% | ±0.05% | |
| The equivalent capacitance | 30pF ～ 0.3μF | 0.5% | |
| Surge arrester | All current | 10μA ～ 50mA | 0.5%±5μA |
| Impedance current | 10μA ～ 10mA | 0.5%±5μA | |
| The capacitive current | 10μA ～ 10mA | 0.5%±5μA | |
| Environmental parameters | Filthy current | 5μA ～ 50mA | 0.5% |
| The environment temperature | -30 ～ 80℃ | 0.5% | |
| Environmental humidity | 0 ～ 100%RH | 2% | |
| Transformer core | The core current | 1mA ～ 10000mA | 1%+1mA |
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