Asian Pacific Energy Technology New Zealand Limited
About Us
As an inventor and pioneer of a portable on-line partial discharge testing technique using the proprietary clamp-on PD sensors, with the leading technology we have been providing the following since 1994:
- On-line Partial discharge tests for insulation condition assessment of high voltage assets;
- Products and solutions for cost-effective insulation monitoring and assessment;
- High voltage and heavy current tests, equipment, techniques and consultancy.
Switchboard and bus
PD test combined with tan δ and DC step voltage test for an aged 11kV switchboard bus, switchboard, and the connected cables at Bromley, Christchurch, NZ 1996.
On-line PD test for 11kV ring main switches and connected cables. Palmerston North, NZ May 2000.
On-line PD test for an aged 11kV switchboad bus, switchboard and the connected cables. West Coast, NZ 2000.
On-line PD tests for an old 11kV switchboard and the connected cables. Kawerau, NZ June 2003.
On-line PD tests for an old 11kV switchboard and the connected cables with a series type PD Sensor. Kinleith, NZ Jul 2003.
PD test for aged 11kV switchboard and the connected cables. Carrington, New Plymouth, NZ May 2003.
Bushings
On site off-line PD tests for 33kV bushings. Whakamaru substation, NZ Aug 2003.
PD tests for 220kV bushings. Hamilton Alstom HV lab, NZ Feb 2003.
Cables
On-line PD test for a 33kV cable at Ashburton, NZ, May 1999.
On-line PD test for a 2.1km 33kV cable. Whangarei NZ, July 2001. PD sensor was attached on screen X-bond.
On-line PD test for a 500kV cable. Guangdong pump storage power station, China, Oct 1999.
On-line PD test for a 2.7km long 33kV cable energizedby the 33kV system. New Plymouth NZ, Jun 2003.
On-line PD test for a 110kV cable. Meiling substation, Shenzhen, China, March 2004.
On-line PD location for a 33kV cable with multiple PD joints at a X-bond, Whangarei, NZ 2011.
On-line PD tests for a 33kV cable at a X-bond, whangarei, NZ.
On-line PD tests for a 33kV cable at the cable termination, NZ.
Online PD tests for a 33kV cable at the cable termination screen earth, NZ.
Final confirmation of the PD joint and phase before replacing the joint.
The replaced PD joint was dissected to reveal the position and extent of PD damage.
PD test for 33kV cables at Tararua wind farm.
PD location for 33kV cables at a NZ wind farm in 2013.
CT
Partial discharge tests for old 33kV CTs. Palmerston North workshop, NZ Aug 2003. The CT\'s high voltage terminator was immersed in oil.
Generators
On-line partial discharge tests for a generator at Kumara hydro power plant. NZ, Feb 1997.
On-line partial discharge tests for a 43MW steam turbine generator at Penrose power plant. Auckland NZ, Jan 2001.
Online PD testing of a motor on switchboard end, large PD is visible on the monitor.
The large PD of 2.5V from the motor in the previous image.
The motor was rewound before it failed in service. The winding bar was severely damaged by the large PD.
GIS
On-line partial discharge tests for 110kV GIS. Shell co., Singapore, Sept 1999.
On-line PD test for an 110kV GIS at its cable termination.
Transformer
On-line partial discharge tests for 110kV transformers at Albury substation, NZ June 2000.
Partial discharge tests for 220kV transformers. Hamilton substation, NZ Oct 2002.
PD test for 500kV transformers at three Gorges plant at modified core earth tap.
PD test for 500kV transformer at the connection of bushing to GIS.