Flender/Flender Gear Units/Helical gear reducers H3
er closing shall be permitted till the system is reset. Changeover back to the normal source of supply will be

affected manually. 2.2 Manual Mode Manual live changeover facility will be provided for all the PC Cs. For planned outage

of 1 of 1 INDRADHANUSH GAS GRID LIMITED TECHNICAL SPECIFICATION FOR NATURAL GAS COMPRESSOR STATION FOR NORTH EAST GAS GRID

PIPELINE PROJECT ______________________________________________________________________________________________ TS NO.: MEC//2UU/0/2/0 Electrical system Chapter-0.0 2, MECON Limited, All Right Reserved Pag 1 of 2 one

of the normal incoming supplies, the respective selected in comer will be tripped automatically after the bus section breaker is closed manually. Also for restoration of normal power supply, the buscoupler will trip after the respect ive incoming breaker is closed. For this purpose, trip selector shall be provided for selecting the breaker to be tripped and momentary paralleli ng shall be done after phase comparison of both the power supplies through check synchronization relay. Thus, depending the selection made, the selected breaker will be tripped once all the three breakers ar closed manually, thus maintaining contin uity of supply for the complete PCC. timer with time delay on pick up of 0.5. - 5 sec will be pr ovided, for annunciation of the running breaker failing to trip within preset time, (.. If the two sources remain paralleled for more than preset time). Latest breaker tripping provision will be included in the changeover scheme for prolonged paralleling. 2.3 Independent Mode Provision for manual independent (dead bus) closing of bus-co upler after an intentional manual trip/ outage due to under voltage of any one incomer will be provided. 2.0 TESTS For Testing Refer Testing chapter. 0.0.1 MOTOR CONTROL CENTRE(INTE LLIGENT/NON-INTELLIGENT TYPE GENERAL 1.