Panel Standardization

A couple considerations based on ISO; any panel longer than 2 ft requires a fan for cooling. Any panel must have 25% of free space.

A standard should be one that can be easily recognized by anyone in the same manner that airplane cockpit instrument panels are laid out; all controls located in the same position so they can be found blindfolded. That is standarization. When push buttons are arbitrarily placed on a panel, the wrong button can be pressed when the operator is not familar with that panel. Standarization is obviously needed in manufacturing and it serves to reduce human error.

If a standard exists for an electrical control panel in India, that standard should be maintained, made available and inspected by the Indian authorities. I expect that power distribution and not control panels have a standard. Since Indian bureaucracy mirrored British bureaucracy, I expect that only licensed individuals with the latest approved copy of a standard can challenge any inspection result.

There are relevant Indian standards . Buy them and follow strictly. Please refer Indian

Electricity Rules before making any electrical panels as the user will have to comply with it before charging.

IS 375: 1963 ETD 7 Marking and arrangement for switch gears bus-bars,

main connections and auxiliary wiring (revised)

(superseded by IS: 5578 and IS: 11353)

IS 694: 1986 ETD 9 PVC insulated cables for working voltages upto and

including 1100 V (third revision) (Amendment 1)

IS 13779

IS 13947

(Part 1):1993

ETD 7 Low voltage switchgear and controlgear: Part 1

General rules (superseding IS 4237)

IS 13947

(Part 2):1993

ETD 7 Low voltage switchgear and controlgear: Part 2

Circuit breakers [superseding IS 2516(Part 1 &

2/Sec 1): 1985] (Amendment 1)

IS 13947

(Part 3):1993

ETD 7 Low voltage switchgear and controlgear: Part 3

Switches, disconnectors, switch disconnectors

and fuse combination units [superseding IS

4064(Part 1 and 2)]

IS 13947

(Part 4/Sec1)

: 1993

ETD 7 Low voltage switchgear and controlgear: Part 4

Contractors and motor starters, Sec 1

Electromechanical contactors and motor starters

[superseding IS 2959 & IS 8544(All parts)]

(Amendment 1)

IS 13947

(Part 5/Sec1)

: 1993

ETD 7 Low voltage switchgear and controlgear: Part 5

Control circuit devices and switching elements,

Sec 1 Electromechanical control circuit devices

[superseding IS 6875(All Parts)] (Amendment 1

IEC 61439