Restoration /replacements of Tripping and Operating System of existing 110 V DC/230-volt AC control for 11Kv VCB Panel at water supply scheme TANGNAR stage 2nd.

Amount

Disconnecting of all the control connections /cables from the connectors of Outgoing VCB control panel & disconnecting of all control AC/DC supply from the panel.

Repairing of the control panel consisting 07 Sub-panels by way of replacement of the damaged control wiring. The job also includes replacement /servicing of limit switches, Bakelite connectors,

Providing and fitting of digital inverse definite minimum time over current and earth fault relay in each outgoing panel. The newly added relays must be connected in such a way that the time of operation must be inversely proportional to the magnitude of fault current near pickup value and becomes substantially constant slightly above the pickup value of relay.

Providing and fitting of digital inverse definite minimum time over current and earth fault relay with High set and RS -485 port. in each incomer panel. The newly added relays must be connected in such a way that the time of operation must be inversely proportional to the magnitude of fault current near pickup value and becomes substantially constant slightly above the pickup value of relay.

Providing and fitting of 7AH 12V dry type batteries in the DC power supply already existing in the adapter panel.

Providing and fitting of the following items as required for the above said work;

10 core un-armored PVC Insulated single strand solid copper cable (1 mm2)

Sheildered wired Temperature Sensors for LRS Unit

9 Ampere Auxially Contractors with 4No 4NC contacts with coil Voltage 110 V DC

9 Ampere Auxially Contractors with 2No 2NC contacts with coil Voltage 0f 230 V AC

16 Ampere Spring return Breaker closing Switch [TNC Switch]

Dual channel Temperature Controller 110 V DC suitable for FCMA Soft Starter with sensors.

400 PIV 10 Amperes Bridge Rectifiers for FCMA Soft Starter.

On delay Timer EAA1D for 30 sec

Emergency STOP Switch with 2NO 2NC complete with indication and cabling.

100 Ampere Test class Analog Ampere meter for CT operated Console.

Analog Hour meter for measuring running hours of Motor units with cabling.

High Speed Tripping Relay 110 Volt with 2NO 2NC

Closing and Tripping Coil for outgoing and incoming VCB’s as per sample.

Water level indicator Alarm buzzer with reset arrangement to be installed in Storage Sump complete with 3 core 0.75 sq mm cabling and sensors.

Sequence starting/interlocking arrangement consisting of 4 No on delay Timers of 10 Amp capacity and 4 No control contactor of 10 ampere capacity with cabling etc. for Motors in such a way that after the starting of 01 motor rest of the motors could not be started within the Time limit of 15-20 minutes as desired. It should be provided with a control switch which can bypass the feature.

M/S SARIM ELECTRICAL SOLUTION