30-10-2012, 05:51 PM
OPEN CIRCUIT & SHORT CIRCUIT TEST ON A SINGLE PHASE TRANSFORMER
OPEN CIRCUIT & SHORT CIRCUIT TEST ON A.docx (Size: 123.01 KB / Downloads: 26)
PRECAUTIONS:
1. Auto Transformer should be in minimum voltage position at the time of closing & opening DPST Switch.
PROCEDURE:
OPEN CIRCUIT TEST:
1. Connections are made as per the circuit diagram.
2. After checking the minimum position of Autotransformer, DPST switch is closed.
3. Auto transformer variac is adjusted get the rated primary voltage.
4. Voltmeter, Ammeter and Wattmeter readings on primary side are noted.
5. Auto transformer is again brought to minimum position and DPST switch is opened.
SHORT CIRCUIT TEST:
1. Connections are made as per the circuit diagram.
2. After checking the minimum position of Autotransformer, DPST switch is closed.
3. Auto transformer variac is adjusted get the rated primary current.
4. Voltmeter, Ammeter and Wattmeter readings on primary side are noted.
5. Auto transformer is again brought to minimum position and DPST switch is opened.