[SUMPNER TEST ( BACK TO BACK ) TEST ON TWO IDENTICAL TRANSFORMER COMPLETE SET UP WITH PANEL BOARD WITH BUILT IN VARIABLE SUPPLY ARRANGEMENT, TWO 1KVA TRANSFORMERS & TWO WATTMETERS.] SUMPNER TEST ( BACK TO BACK ) TEST ON TWO IDENTICAL TRANSFORMER COMPLETE SET UP WITH PANEL BOARD WITH BUILT IN VARIABLE SUPPLY ARRANGEMENT, TWO 1KVA TRANSFORMERS & TWO WATTMETERS – GUPTA BRAND( 100000003 )

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