Aiming at the problem that it is difficult to implement the transformation of distribution automation in the narrow space of 10kV ring network cabinet, Tianrui Electronics has introduced the distribution network voltage sensor with full insulation, full shielding, particial discharge-free and high stability, which effectively solves the key technical problems of two-remote/three-remote automation transformation.
TR-EVT-10H type ring network cabinet voltage sensor adopts the principle of capacitor voltage division, silicon rubber vacuum casting process, from the ring network cabinet installation application divided into front connector type and rear connector type, can output phase voltage signal and zero sequence voltage signal.
Full shield design:The outer surface of the sensor is all shielded grounding conductor, fully matching the ring network cabinet application;
Safe and reliable:There will be no magnetic circuit saturation and no hidden danger of ferromagnetic resonance accidents. Ultra-large margin without partial discharge design;
Full insulation design:The outside of the sensor adopts the cable accessory insulation method, and the inner insulation adopts the vacuum potting of the uniform electric field capacitor voltage divider, and the insulation safety margin is large.
Saving resources:Small size, light weight, low energy consumption, no need to transform the ring network cabinet;
High precision, no iron core, wide frequency range, large measurement dynamic range, good linearity, strong anti-interference;
Flexible application, suitable for all kinds of ring network cabinets of different specifications;
| Type | Parameters |
|---|---|
| Model NO. | TR-EVT-10H |
| Rated Primary Voltage | 10kV / Primary Terminal Mark: A、B、C Ground Terminal Mark: N |
| Rated Secondary Output | Phase Voltage：3.25V / ；Zero Sequence Voltage: 6.5V / 3 |
| ACCURACY | Phase Voltage：0.5 / 3P Level ；Zero Sequence Voltage: 1 / 3P Level |
| Rated Load | 2 MΩ （Note: 2MΩ for factory test; Load） |
| Rated Frequency | 50Hz |
| Insulation level | 12 / 42 / 75 kV （Note: Tested with cable accessories fully installed） |
| Partial Discharge | ≤10pC （Measure partial discharge value at 14.4kV） |
| Executive Standard | T/ZDG018-2018 Technical conditions for 10kV and 20kV AC sensors in distribution network |
| Working temperature | -40℃～+70℃ |
