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The PD sensor is used to detect partial discharge signals in UHF (Ultra High Frequency) band.
There are three types of sensors: External PD Sensor, Internal PD Sensor, and Noise Sensor.
- The External PD Sensor is installed on open-type insulating GIS spacer.
- The Internal PD Sensor is installed in mounted window of GIS enclosure.
- The Noise Sensor is a device installed externally at the substation GIS to detect various external electromagnetic signals such as corona, mobile phone, radar, switching surge.
Internal Sensor
| Frequency Range | 300~2,000 MHz |
|---|---|
| Output Power (5pC) | Over -20 dBm |
| Impedance | 50 Ω |
| Sensitivity | Below 5pC |
| Connector | N-Type |
| Material | Aluminum, MC Nylon |
| Install Position | GIS Enclosure |
External Sensor
| Frequency Range | 300~2,000 MHz |
|---|---|
| Output Power (5pC) | Over -20 dBm |
| Impedance | 50 Ω |
| Sensitivity | Below 5pC |
| Connector | N-Type |
| Material | Aluminum, Epoxy |
| Install Position | GIS Spacer |
Noise Sensor
| Frequency Range | 300~2,000 MHz |
|---|---|
| Impedance | 50 Ω |
| Connector | N-Type |
| Material | PE |
| Install Position | Near GIS |
Drain Value Sensor
| Frequency Range | 300~2,000 MHz |
|---|---|
| Output Power (5pC) | Over -20 dBm |
| Impedance | 50 Ω |
| Sensitivity | Below 5pC |
| Connector | N-Type |
| Material | Steel, MC Nylon |
| Install Position | Transformer Drain Valve |
Window Sensor
| Frequency Range | 300~2,000 MHz |
|---|---|
| Output Power (5pC) | Over -20 dBm |
| Impedance | 50 Ω |
| Sensitivity | Below 5pC |
| Connector | N-Type |
| Material | Steel, MC Nylon |
| Install Position | Transformer Enclosure |