1    Applicable standards: 8623 – Part – II – 1993

2    Supply System: 415 Volts to 11000 Volts Max

3    System earthing: Solidly earthed

4    Service: Indoor/outdoor

5    Design ambient temp. : 45 Deg C

6    Rated voltage & frequency : 415V, 50 Hz, +/-5%

7    Current rating Continuous rating at a specified ambient temp. (rated current) : up to 4000A

8    Dynamic stability current Short time short circuit current rating:: 105 kA /50 kA, 1 second

9    Busbar material: Aluminium / Copper

10  Earth bus material & cross-section : Aluminium/ copper

11  Busbar jointing Surface treatment Bolts & washers Bimetallic joints: Tinned Cadmium plated will be                  provided based on the requirement

12  Type of enclosure: IP 54 for indoor, IP55 with bolted canopy for outdoor

13  Max. rise of temp. under full load over specified ambient temp. Busbars Enclosure At joints: 40 Deg                     Cover  45Deg C

14  Type of end terminations Transformer end/ Switchgear end : : Copper flexible /Aluminium Flexible

15  Provision of space heater Rated voltage:: will be provided -230V AC with MCB control if required.

16  Wall frame assembly: Will be provided based on the requirement

17  Bus bar arrangement: As per IS 5578