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The transformer testing performed before commissioning the transformer at the site is called the pre-commissioning test of the transformer. Various pre‐commissioning checks and tests are performed to ensure the healthiness of the power transformer prior to its energization. Operational checks on the protection system.Transformers may be tested using AC or DC voltage. AC voltage is preferable to DC voltage for transformer testing because AC voltage simulates the internal stress that the transformers face during operating conditions. The following tests are routinely conducted in the field on the transformer: Excitation current test, Insulating fluid dielectric tests, Insulation PF test, Insulation Resistance test, TTR test, Polarity test, AC or DC hi-pot test, Induced potential test, Frequency response analyzer, Dissolved gas analysis tests, DC winding resistance, Transformer core ground test, Polarization recovery voltage test.
T-203AUTOMATIC THREE PHASE TRANSFORMER TURNS RATIO TESTER
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T-203HTHREE PHASE HANDHELD TRANSFORMER TURNS RATIO METER
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T-206TRANASFORMER DIELECTRIC LOSS TAN DELTA TESTER
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T-218PORTABLE FULLY AUTOMATIC TRANSFORMER DEMAGNETIZER
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T-213TRANSFORMER WINDING DC RESISTANCE TEST SET
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T-213STHREE PHASE TRANSFORMER DC RESISTANCE TESTER
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T-213HHANDHELD MICROOHM METER
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LC-100KVPortable Transformer Oil Dielectric Strength Tester
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LC-2KVAUTOMATIC TRANSFORMER OIL TAN DELTA TEST SET
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