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Indian Standard Details. Classification Details. Cross Referencing Details. IS : Heavy duty electric overhead travelling cranes including special service machines for use in steel work - Code of practice Second Revision.
IS : Part 2 : IS : Part 1 : Ac generators driven by reciprocating internal combustion engines - Specification: Part 1 alternators rated up to 20 kVa. Ac generators driven by reciprocating internal combustion engines - Specification: Part 2 alternators rated above 20 kVa and up to kVa.
Code of practice for liquefied petroleum gas storage installations: Part 2 commercial, industrial and domestic bulk storage installations First Revision.
IS : Part 3 : Sec 1 : Code of practice for design, installation and maintenance for overhead power lines: Part 3 kV lines: Sec 1 design.
IS : Part 3 : Sec 2 : Code of practice for design, installation and maintenance of overhead power lines: Part 3 kV lines: Sec 2 installation and maintenance. Application guide for medical electrical equipment: Part 2 Safety provisions, application, operation and maintenance. IS : Part 2 : Sec 1 and 2 : Electric traction lifts: Part 2 code of practice for installation, operation and maintenance: Sec 1 passenger and goods lifts: Sec 2 service lifts.
Specification for three - Phase induction motors for fans used in air - Conditioning and ventilation. Single phase small AC electric motors for centrifugal pumps for agricultural applications - Specification. Three - Phase squirrel cage induction motors for centrifugal pumps for agricultural application - Specification First Revision. SP 30 : Recommended pumping systems for agricultural purposes: Part 2 submersible pump sets Third Revision.
Monoset pumps for clear, cold water for agricultural and water supply purposes - Specification Third Revision. Liquefied petroleum gas storage installations - Code of practice: Part 1 residential, commercial and industrial cylinder installations Third Revision.
Earthing Details as is-3043
In the case of high and extra high voltage the neutral points shall be earthed by not Less than two separate and distinct connections with earth, each having its own electrode at the generating station or substation and may be earthed at any other point provided 'no interference is caused by such earthing. If necessary, the neutral may be earthed through suitable impedance. In cases where direct earthing may prove harmful rather than provide safety for example, high frequency and main frequency coreless induction furnaces. Relaxation may be obtained from the competent authority.