TENDER - IDCO

the enclosure, shall be provided as a safety measure. There shall be provision of
proper illumination inside the enclosure to facilitate maintenance of the DG set.
The insulating materials, such as rock wool/mineral wool etc. used for the
purpose shall have high sound absorption quality, high temperature withstand and
high fire retardant capability. It shall confirm to IS:8183 . Sound attenuators/down
stream silencers may be provided at all opening for air inlet/outlet to facilitate flow of
air with low noise.
AMF PANEL :
The panels shall be fabricated out of sheet steel and have hinged doors
removable bottom gland plate, incoming & outgoing bus bar arrangement and
required protections and metering arrangements. It shall be dust proof, vermin proof,
totally enclosed suitable for indoor use with IP 41 class of protection. The cable facility
shall be provided from bottom.
The AMF panel shall consist of 2nos 630A, 36KA motorized MCCB complete
with suitable spreader links & ROM. One MCCB shall be fed from the substation panle
& the other from the alternator of DG set. The MCCB’s shall bee suitable for O/C,
E/F, S/C protections with thermal adjustable type. Electrical interlocking shall be
provided in-between the above to MCCB’s for AMF operation. Suitable arrangement &
adequate clearance may be maintained for easy termination of 3nos 3 ½ c x 150sqmm
armoured aluminium XLPE (E) cables with both the MCCB’s & outgoings. The control
panels shall be complete with the arrangement for automatic ON/OFF of DG Sets.
Following measuring instruments shall be fitted to the control panel.
1. One number 3-Phase 4-Wire CT operated electronic KWH meter with required
CT and sealing & locking arrangement in a separate tamper proof enclosure. It
shall have a viewing window for taking the meter reading.
2. One number 0-500 volt AC digital voltmeter with selector switch and control
fuses.
3. One number 0-250 Amp AC digital ammeter with required current transformers
and selector switch.
4. Auto / manual selection switch.
5. Push buttons for Engine start, Engine stop, reset.
6. Window fault annunciation for load on mains, load on set, set running, DC
control on, start failure, overload, DC control ON, low oil pressure, high water
temperature.
No. of Correction :
No. of overwriting :
Signature of the Contractor