PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
19.12 L.T. 415V, Power Distribution Panel Board<br />
The L.T, 415V, PDB shall effectively receive power & distribute to different outlet<br />
of motor control circuit and lighting etc. The L.T. 415V. PDB shall effectively<br />
receive power and distribute to lighting panels be suitable for 415v ± 10%,<br />
50 Hz ± 5%, 3 phase, 4 wire, A.C supply system. The incoming power shall be<br />
made available from the nearby 11 Kv/0.433 V transformer prior to commissioning<br />
of the station.<br />
19.13 Motor Control Centre :<br />
The Motor Control Centre shall have the following provisions:<br />
For receiving the supply : ACB or MCCB.<br />
For distribution : Bus bar, switch fuse units, circuit breakers.<br />
For controls : Starters: level-controls, if needed: Time-delay relays.<br />
For protections : Under voltage relay, over-current relay, hot fault relay, single<br />
phasing preventor.<br />
For indications and readings : Phase indicating lamps, voltmeters, ammeters,<br />
frequency meter, power factor meter, temperature scanners, indications for state of<br />
relays, indications for levels, indications of valve positions, if valves are powered<br />
actuated, indication of power pressure.<br />
The HT Panel board for motors shall be capable to provide the following<br />
signals/data to the PLC for automation/visualization.<br />
■ Voltage on either side of the bus coupler, current for each outgoing feeder,<br />
energy consumed as well as incoming frequency.<br />
■ The HT panel board should be capable for switching on/off from local (pump<br />
house) or remote (i.e. from PLC via the MMI).<br />
■ Basic information of each breaker such as breaker on/off/trip, in test/service<br />
position etc. to be informed to PLC. PLC & MMI PC system is however<br />
outside the scope of this work.<br />
■ The auxiliary supply for tripping coil/closing coil (110V DC or 220V DC)<br />
shall be built-in power pack through rectifier unit and for spring charging<br />
motor of the VCB and that of the space heater, indication etc. of the panel,<br />
external 230V power shall be supplied for external source to the built-in<br />
wiring of the panel offered.<br />
DTS : Detailed Tender Specification. Page 198
Change language