96 Application Guide AS/NZS 3947-3 3F Lockout Isolators IEC 60947 - 1 Equipment suitable for isolation shall provide, in the open position (see 2.4.21) an isolation distance in accordance with the requirements necessary to satisfy the isolation function (see 7.2.3.1 and 7.2.2) (dielectric test) Indication of the position of the mains contacts shall be provided by one or more of following means: (1) The position of the actuator (2) A separate mechanical indicator (3) Visibility of the moving contacts The effectiveness of each of the means of indication provided on the equipment and its mechanical strength shall be verified in accordance with clause 8.2.5 Clause 8.2.5 Verification of the effectiveness of indication of the main contact position of equipment suitable for isolation. To verify the effectiveness of the indication of the main contact position, all means of indication of contact position shall continue to function correctly after the operational performance type tests, and special durability type tests (if performed) All low voltage switches installed in Australia and New Zealand shall meet AS/NZS 3947-3 and carry the appropriate easily identifiable symbol depending on the switch classification. Switch A mechanical switching device capable of making and breaking currents under normal conditions, which may include specified overload conditions according to the duty, and abnormal circuit conditions such as short circuit, (motor reversing switches, control switches, star delta switches, etc.) Disconnector A mechanical switching device which in the open position, complies with the requirements specified for the isolating function (Off load isolator) Switch Disconnector A ‘Switch’ which in the open position, complies with the requirements specified for the isolating function (On load isolator) Equipment Suitable For Isolation - The Following Clauses Apply Clause 7.1.6 Additional constructional requirements for equipment suitable for isolation Clause 7.1.6.1 Additional constructional rquirements Switch Classifications
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