Open Circuit Test Perform on Low Voltage -Side, -
Open Circuit Test Perform on
l.v.Side.Consider 3300/220 V, 33 KVA , Single Phase Transformer.
Range of Voltmeter, Ammeter & Wattmeter are 220 V (Rated Value), 6 A(2 to 6 % of Rated Current of 150 A) .
And 6 A,220 V Respectively. These are Standard Ranges for ordinary instruments and Therefore more accurate Reading Can be Obtained .
If Open Circuit Test Perform on The h.v. Side ,a Source of 3300 V may not be Readily available.At the Same Point Instruments Range are 3300 V & 0.4 A.
3300 V which are not within the Range of ordinary instruments & The Results obtained may not be accurate.it may not safe to work on high Voltage Side.
https://youtu.be/pludAUm0GP0
Open Circuit Test Perform on
l.v.Side.Consider 3300/220 V, 33 KVA , Single Phase Transformer.
Range of Voltmeter, Ammeter & Wattmeter are 220 V (Rated Value), 6 A(2 to 6 % of Rated Current of 150 A) .
And 6 A,220 V Respectively. These are Standard Ranges for ordinary instruments and Therefore more accurate Reading Can be Obtained .
If Open Circuit Test Perform on The h.v. Side ,a Source of 3300 V may not be Readily available.At the Same Point Instruments Range are 3300 V & 0.4 A.
3300 V which are not within the Range of ordinary instruments & The Results obtained may not be accurate.it may not safe to work on high Voltage Side.
https://youtu.be/pludAUm0GP0
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