Specifications

Enquiry Specification for Wagon Tippler with Side Arm Charger and Associated works
NRO/CON/WT/533
EPI – New Delhi Volume-2B, Rev.0 Page 52 of 63
9.0 TECHNICAL SPECIFICATION FOR STAND ALONE STARTER
A. General :
1.0 Type -Metal clad . -Non drawout type.
2.0 Construction -Modular construction . -Fully compartmentalized with
metal / insulating material partition.
3.0 Enclosure class IP52.
4.0 Type of execution Single front.
5.0 Mounting -Floor mounting. -Free standing with ISMC 75.
6.0 Installation Indoor.
B. Constructional Features :
1.0 Sheet steel
Thickness -2 mm for load bearing members. -1.6 mm for non load
bearing members.
Material CRCA
2.0 Cable entry -Incomer :Bottom cable entry. -Outgoing :Bottom cable
entry.
3.0 Design -Rear access through removable rear hinged cover door.
-All the components shall be accessable from front .
4.0 Interlocking &
protection
-Module door interlocked with main power isolating
devices. -Power circuit isolation device to have pad
locking in the OFF position with door closed.
5.0 Operating height -Minimum :-300mm -Maximum :-2000 mm.
6.0 Gland plate Undrilled removable bottom gland plates (3 mm thick)
7.0 Miscellaneous -Neosprene rubber gasket shall be provided for all the
doors , removable covers & between adjacent covers . -
Lifting hooks for the panel . -Doors shall have concealed
hinges .
8.0 Labelling Clear legible identification labels (anodized aluminium
with white letters engraved on black background ) with
letter sizes of :-25-50 mm for panel . -5 mm for
components and module name plates. -Danger board on
front and rear sides in English , Hindi and local language
9.0 Earthing -Two separate earthing terminals will be provided. -
Bolted joints with tooth spring washers for good earth
continuity.
10.0 Paint shade Shade No. 631 as per IS-5:1992 equv to RAL 7035 .
11.0 Panel space heater In each panel with thermostat , MCB .
C. Busbars
1.0 Arrangement Three phase & neutral.
2.0 Material High conductivity electrolytic aluminium alloy confirming
to grade E91E as per IS-5082 –1981.
3.0 Phase Busbar
Rating
-Shall be able to carry continuously the connected load
(considering all derating factors) plus a 25% margin . -
Max. current density shall be -1.0 A/sq.mm for
Aluminium -1.5 A/sq.mm for Copper.