Technical data

CHAP-04.10 ELECTRICAL POWER DISTRIBUTION, DRIVES, CONTROL &
ILLUMINATION ELECTRICAL
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 Generally Squirrel Cage Induction Motor with DOL starter / VFD /
Soft Starter will be provided.
 Suitable Rotor contactor panels and SS-grid Resistance Boxes
will be provided for starting and speed control of slip ring motors
wherever required as per Technological requirement.
 All HT conveyor motors will be S1 duty.
 All LT motors for conveyors will be S6 duty and will have class F
insulation with temperature rise limited to class B.
 Inverter duty motors (used for VFD application) will have class H
insulation with temperature rise limited to class F.
2. Indoor 415 V LT MCC and Control panel with CT, PT, metering and
Protection etc. as required.
 Motor Control Centres for Coal Handling Plant and Coke Sorting
Plant area will be Intelligent, draw out type with two incomers and
bus coupler for control of drives of rating up to 90kW, of various
technological units having communication with Plant Automation
System.
 Motor Control Centres for Augmentation in Flux - Fuel Preparation
and Plant Return Fines Handling for SP III will be Conventional,
drawout type with two incomers and bus coupler for control of drives
of rating up to 90kW, of various technological units.
 For control of drives of rating from 110kW to 200kW of various
technological units, Intelligent type Motor control panels (MCPs) for
CHP, CSP and FFP area having communication with Plant
Automation System.
 Control panel for Tripper car, crane, hoist, small machines and
Auxiliaries will be conventional type, non draw-out control panel. All
control panels on the mobile machines will be mounted on anti
vibration pad.
 Electronic over load relay for motors upto 90kW and Motor Protection
Relays for motors above 90 kW will be used in conventional type
(non-intelligent) MCC / Control panel. The electronic overload relay
will be of Manual Reset type.
 Local/Remote selector switch will be mounted on MCC & Control
Panel.
 Motor feeders up to 45 kW rating will have MPCB and MCCB beyond
45 KW rating.
 Current monitoring for all drives of rating above 30kW
 Conveyors feeding to Augmentation in Flux - Fuel Preparation and
Plant Return Fines Handling for SP III (FFP) C7-3.5KW, C1-30KW &
C2-45KW will be fed from new MCC under the scope of package.
Contractor will consider Power cable for feeding the same. These
Conveyors will be connected and controlled by new PLC envisaged