IPEC PD-SGS
Brand :
IPEC
Categories :
Partial Discharge Spot Testers
The PD-SGS is an on-line Partial Discharge (PD) spot tester for HV assets. The instrument detects TEV signals generated by internal discharge in Air Insulated Switchgear (AIS), acoustic discharge generated by surface tracking or corona, high frequency signal generated by cable partial discharge, and ultra-high frequency signal generated by internal discharge in Gas Insulated Switchgear (GIS).
Hear the PD
only instrument available that allows the user to hear PD activity
Long lasting battery
allowing a whole day of testing without requiring a recharge
Ensure accurate results
auto separation when the device detects background Noise instead of real PD
Personnel Safety Device
ensure the substation is clear of PD before conducting work
Ergonomic and compact design
fits in the user’s pocket and Is easy to use
Rapidly survey the whole substation
and detect MV and HV problems before they occur
Specifications
Measurement of TEV signals generated by internal AIS PD
Ultrasonic detection of surface PD activity
Compatible with HFCT and UHF sensors for cable and GIS PD activity
Automatic Background Noise Separation
Level Mode and PRPD Mode
Bright OLED screen display with dB readings
Audible output through headphones or built in speaker
PD activity inside metal clad high voltage plant induces small voltage impulses called Transient Earth Voltages on the surface of the metal panels. TEVs travel around the surface to the outside of the switchgear, where they can be picked up externally using the PD-SGS.
Defects on the surface of high voltage insulators are prone to a phenomenon known as surface tracking. Tracking causes carbon deposits that build up over time, ultimately leading to flashover and insulation failure. The PD Detector is highly sensitive to the ultrasonic emissions produced by tracking and enable the onset to be detected before insulation failure.
IPEC’s UHF (Ultra High Frequency) sensor is used to detect PD in EHV cable terminations, GIS (Gas Insulated Switchgear), GIL (Gas Insulated transmission Lines) & GIT (Gas Insulated Transformers). The sensors pick up signals in the UHF range (200MHz-2.0GHz) and are mounted against the insulating barrier spacers that separate components of the HV asset.
Cable
Partial discharge activity in solid high voltage insulation induces small high frequency currents in the earth conductor of the electrical system. These impulses travel along the equipment earth to the substation earth. Using a high frequency current transformer, they can be detected as they pass through the CT.
Rapidly survey the whole substation – and detect MV and HV problems before they occur
Personnel Safety Device – ensure the substation is clear of PD before conducting work
Ensure accurate results – auto separation when the device detects background Noise instead of real PD
Ergonomic and compact design – fits in the user’s pocket and is easy to use
Long lasting battery – allowing a whole day of testing without requiring a recharge
Add-on Sensors Option
HFCT: cable PD detection
UHF: GIS PD detection
Ultrasonic Parabolic Dish: bushing PD detection
