a) MCC are made up of sheet steel enclosure, indoor floor mounting and free standing, Dust and vermin proof, modular type and of double front and single front (X1, Y1).
b) Degree of protection is IP 50 as per IS 2147.
c) 0.9 * 0.8 * 2.4 meters size (double front and single front) and top entry of cables.
d) 0.9 * 0.6 * 2.4 meters size (single front) and bottom entry of cables.
e) Parts are incoming panel, Cable entry, TB compartment, MCC module compartment.
f) MCC modules are fully drawn-out type.
g) Main buses are horizontally mounted and vertical buses are connected to MCC cells.
h) Stab – in contacts are used for power and wipe – in contacts are used for control circuits.
i) CT and PT are used for current and voltage measurements.
j) 3φ indication lamps are provided for identification.
k) Voltage meter and ammeter are provided.
l) Panel space heater and emergency push button key operated are provided.
m) Control building and SRPH MCC are safety related and SB, TB, RAB, CWPH, DM Plant MCC’s are non safety related.