Table of Contents
Advertisement
5 Commissioning
5.1 Output error sources
The permittivity increases with temperature. The increase is maximum 0.5 x 10
OIP, and for RIP the change of permittivity is maximum 1.5 x 10
Losses vary with temperature. For correction of losses, refer to the instruction Bushing diagnostics and
conditioning Product information 2750 515-142.
Lab/production measured values may differ from site measurements because of different ground plane
conditions etc. The typical relative error is <1 %.
Additional error sources are the tolerances in the measuring equipment, and the timing when the operator
reads the output.
5.2 Insulation test
1.
Do an insulation test according to ABB:s installation and commissioning guide for the specific bushing.
End of instruction
Installation and maintenance guide
1ZSC000563-ACD EN, REV. A, 2019-06-25
CAUTION!
Do not energize the bushing without the test adapter, or the cover installed. The cover
connects the bushing to ground, and will prevent damage to the bushing.
-3
-1
[K
] relative increase for
-3
-1
[K
] in the interval from 20 °C to 110 °C.
25
Hide quick links:
Advertisement
Table of Contents
