5.3 Partialdischargemeasurernent

1a

IEC 60076-11, clause 22.4.1.126 February 2013

Standard and dateStandardTest date

Ambient air pressureHumidity

-l-

Trc 1370-'13

'1030 ht)ai g/m

Environmental conditionsAmbient temperatureTemperature of test object

Characteristic test dataCalibrationNoise levelCoupling capacitors 260A . PFBandwidth

.t0O-aLf9-*fJ7Test frequeircy, I- ; t ,,tt ,. A9L-H.L:Rated voltage (U)Test conditions | '. ,This test voltage is 80% of the sp'ecified test.levei.

20 0c'19 "c

5pc1pc

-l t_1,o.* lf'JL-EL.-

Low-vo[age winding-

High-votlage winding-

Coupling pacitorCPL

- Quadripole/Messuing impedance

- AQuisition unil

- MCU-Controlunil

HVCK

terminal voltage applicationl) duration

(s)

partialdischarge

level

(pc)

inception extinction result

..xU,/./3

phase-to-earth voltage

(kv) (kv) (pc) (kv) (pc)A 1,6 10,2 30

1,3 8,3 1g0 2) nd passed

B 1,6 10,2 30

1,3 8,3 190 ') nd passedC 1,6 10,2 30

1,3 8,3 190 2) nd passed

1) The transformer was supplied with a three-phase voltage on the LV winding2) The partial discharge value was measured at the end ofthe 180 seconds

Requirements

The partial discharge levels at 1 ,3 U, shall not exceed 10 pC.

Result

The transformer passed the test.