Technical data

CHAP-04.10 ELECTRICAL POWER DISTRIBUTION, DRIVES, CONTROL &
ILLUMINATION ELECTRICAL
Page 30 of 50
cleaning operation of the bag filters as per lower set value of
differential pressure. This set point will be independently
adjustable.
ii) The second set of N.O. contact will close at upper set value of
differential pressure representing clogging condition of bag filter
and will be used for signaling and monitoring. This set point will
also be independently adjustable. The contacts will be rated for 5
Amp, 240V AC.
iii) The DP switch will be suitable for outdoor installation. The DP
switch casing will be made of pressure die cast Aluminium with
enclosure conforming to IP-65.
iv) One number differential pressure switch with two set points will be
provided for each module of the Bag filter. Alternatively, two
numbers of DP switches may be provided for each module one
for initiation of bag cleaning operation and other for signaling and
monitoring of clogging condition.
05 Solenoids
The solenoid coil will have encapsulated coil (class 'F' insulated with a
water proof (IP-65) plug-on connector. The coil will be suitable for 24V
DC. The coil will be made of copper conductor.
06 Air Pressure Switch cum indicator
One number compressed air pressure switch cum indicator will be
provided for each DE system in the incoming compressed air pipe line of
the bag filter. The pressure range will match with the operating pressure.
The switches will be snap action type with 1 NO + 1 NC contacts of SA,
230 V AC. These contacts will be wired up to terminals in the bag filter
control panel. The enclosure of the air pressure switch will be pressure
die cast aluminium conforming to IP-55.
04.10.13.09. Type of Light Fittings and Illumination Levels
Illumination level and light fittings will be provided for different units as
indicated below :
SL.
NO.
UNITS
ILLUMINATION
LEVEL (LUX)
TYPE OF LIGHT
FITTINGS
1.
Electrical rooms,
substations, MCC
Rooms etc.
200
Trough type, 2x40W,
fluorescent tube light
fittings with reflectors.
2
Junction Houses and
Conveyor Galleries /
100
70W/150W, HPSV, well
glass fittings and 250W