High Voltage & Partial Discharge Services (HVAC & PD)
High voltage is our specialty!
- On Site High Voltage (HVAC) testing of GIS/AIS HVAC up to 400kV
- On Site High Voltage (HVAC) testing of GIS/AIS HVAC up to 400kV
- On-site testing of XLPE terrestrial and submarine cables
- High Voltage Studies, Analysis and Engineering
- Offline & Online Partial Discharge Test
- Transformers & Tap Changer PD Transformers & Tap Changer PD
- Cable Fault Locating Services
- VLF Testing along with PD Measurements
- All preliminary & Precommissioning test for Cables up to 400kV
- Cable Jointing & Termination up to 132kV
On Site Testing of GIS
Testing of withstand voltage at GIS can be performed using the AC voltage test system with variable frequency once installed on-site. The test system operates in a frequency range from 20 Hz to 300 Hz and complies with the requirements according to IEC 60517 and IEC 62271-203.
Test methods:
The WRVG G-type test system can be directly flanged to the test object. The high-voltage reactor is SF6-insulated and features a high output voltage and has a compact, lightweight design. The test system and test object become a closed system with a low PD background noise level when directly flanged. This feature makes the model ideally suited for sensitive PD measurements.
On -Site Testing of Cables
Withstand voltage tests on XLPE cables can be performed using the AC test system with variable frequency once laid on-site. The test system operates in a frequency range from 20 Hz to 300 Hz and complies with the requirements according to IEC 60840 and IEC 62067. An individual test system is designed for tests of up to 260 kV and 83 A, which facilitates testing of high-voltage cables that can be several kilometers in length. Several test systems can be conveniently connected in series when higher test voltages are required or in parallel when testing cables of up to 100 kilometers in length. These systems can even be used to test ultra-long submarine cables that connect offshore wind farms. The test system has been mounted on a standard-sized trailer, which facilitates transport to the specific site. The test system can be set up on-site within an hour without cranes or similar equipment.
