Testing; Routine Testing; Type Tests; Special Tests - ABB GSA-OO Technical Manual

T R A N S F O R M E R B U S H I N G S T Y P E G S A - O O T E C H N I C A L G U I D E
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Testing

Routine testing

The bushing is routine tested according to
applicable standards. The tests include
measurement of partial discharge quantity, tan δ,
capacitance, power frequency voltage withstand
test. The flange is separately tightness tested,
and the seal between flange and core is tested
after mounting. A visual inspection is performed.
An individual routine test protocol is delivered
with each bushing.

Type tests

Complete type tests have been performed and
reports are available on request.
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02 Test tap.

Special tests

A number of tests not specified by international
standards have also been performed and reports
are available on request.
Test tap
The outer conducting layer of the condenser core
is connected to an insulated test tap on the
flange. During operation the protective cap must
be screwed on to earth the outer layer to the
flange. The maximum test voltage is 2 kV, 50 Hz
for 1 minute. The maximum service voltage is
600 V.
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03 Test tap adapter, 1ZSC003881-AAE.
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