EXCITATION CONTROL CARD FOR DEMU/ DPC TO DETAILED SPECIFICATION AS UNDER: ( 1 ) OPERATING VOLTAGE- 110V +/- 25V, ( 2 ) NO. OF 4 PIN CONNECTORS- 2 NOS. 3 ) TYPE OF CONTACTORS- PHEONIX. 4 ) FIELD CURRENT- UP TO 10AMPS DC. 5 ) STATUS INDICATIONS- EXCITATION SUPPLY LED. 6 ) HEAT SINK- ALL POWER DEVICES ARE TO BE MOUNTED ON ANODISED ALUMINIUM HEAT SINK. 7 ) PRINTED CIRCUIT BOARD- DOUBLE SIDED GLASS EPOXY LAMINATED ONLY. 8 ) ICs- ALL INTEGRATED CHIPS USED SHOULD BE IMPORTED AND DIRECTLY SOLDERED ON PRINTED CIRCUIT BOARD. 9 ) SHORT CIRCUIT PROTECTION SHOULD BE PROVIDED. 10 ) GALVONIC ISOLATION SHOULD BE PROVIDED.