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Specification For Low Voltage Switchgear And Controlgear

1. SCOPE
This specification defines the requirements for the design, manufacture and works testing of indoor assemblies of low-voltage, metal-enclosed switchgear and
controlgear operated at voltages up to and including 1kV and intended for use on the PROJECT-NAME projects (hereafter referred to as ‘the Project’)

2. CODES, STANDARDS AND SPECIFICATIONS
2.1 General
The electrical equipment and installation shall conform in design, materials and performance, except where otherwise specified, with the current issue and amendments of the Codes and Standards specified by the International Electrotechnical Commission (IEC).

All conflicts between the requirements of this specification and other relevant documents shall be referred to the Buyer for resolution.

2.2 International Electrotechnical Commission (IEC) Standards

IEC 60044 Instrument transformers
IEC 60051 Direct acting indicating analogue electrical measuring instruments and their accessories
IEC 60073 Colours of indicator lights and pushbuttons
IEC 60129 Alternating current disconnectors and earthing switches
IEC 60186 Voltage transformers
IEC 60255 Electrical relays
IEC 60258 Direct acting recording electrical measuring instruments and their accessories
IEC 60269 Low-voltage fuses
IEC 60337 Control switches (low-voltage switching devices for control and auxiliary circuits, including contactor relays)
IEC 60417 Graphical symbols for use on equipment.
IEC 60439 Low-voltage switchgear and controlgear assemblies.
IEC 60445 Identification of equipment terminals and of terminations of certain designated conductors. Including general rules for an alphanumeric system
IEC 60521 Class 0.5, 1 and 2 alternating current watt-hour meters
IEC 60529 Degrees of protection provided by enclosures
IEC 60617 Graphical Symbols for diagrams
IEC 60664 Insulation coordination for equipment within low-voltage systems
IEC 60715 Dimensions of low-voltage switchgear and controlgear. Standardized mounting on rails for mechanical support of electrical devices in switchgear and controlgear installations
IEC 60898 Miniature air-break circuit breakers for a.c. circuits.
IEC 60947 Low-voltage switchgear and controlgear.
IEC 61000 Electromagnetic Compatibility
IEC 61641 Enclosed low-voltage switchgear and control gear assemblies – Guide for testing under conditions of arcing due to an internal fault.


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