TYPE TESTS AND ROUTINE TESTS

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7.0 TYPE TESTS AND ROUTINE TESTS

Each transformer and ancillary equipment shall be inspected and tested during manufacture and before despatch to site. Tests shall include type tests as specified in BS 171 or IEC 76. viz.
(a) Type Tests
(i) Full wave impulse voltage withstand test
(ii) Temperature rise test
(iii) Short circuit test
(iv) Measurement of zero sequence impedance
(v) Transformer tank vacuum test
(vi) Transformer tank pressure test
(b) Routine Tests
(i) Measurement of winding resistance
(ii) Measurement of voltage ratio and check of voltage vectorrelationship

(iii) Measurement of impedance voltage and short circuit impedance
(iv) Measurement of load loss
(v) Measurement of no load loss
(vi) Separate source power frequency voltage withstand test
(vii) Induced overvoltage withstand test
(viii) Transformer noise level measurement

 


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