AS/NZS IEC 60947.5.5:2015 pdf download-Low-voltage switchgear and controlgear Part 5.5: Control circuit devices and switching elements—Electrical emergency stop device with mechanical latching function.
4.3 Additional requirements for trip wire switches Information provided by the manufacturer shall include: – the maximum length of wire or rope; – the correct tension of wire or rope; – the distances between supports; – recommendation to use only straight runs of wire or rope; – if applicable, guidance on maintenance for pulleys and eyelets, and the measures necessary to ensure that the wire or rope remains in proper position. 4.4 Additional requirements for colour coding A resetting button, for example where applicable with a trip wire switch, shall be coloured blue. When a colour coding is used for setting a trip wire switch: – green shall indicate the correct setting of the rest position; and – yellow shall indicate the correct setting of the actuated position. 5 Electrical requirements 5.1 The utilization categories shall be AC-1 5 and/or DC-1 3 and/or DC-1 4 in accordance with IEC 60947-5-1 . 5.2 All normally closed contact elements of an emergency stop device shall have a direct opening action (positive opening action), according to annex K of IEC 60947-5-1 . The tests shall be conducted according to annex K of IEC 60947-5-1 . 5.3 The degree of protection provided by the emergency stop device shall be stated by the manufacturer in accordance with annex C of IEC 60947-1 . 5.4 Tests for electrical characteristics shall be conducted according to IEC 60947-5-1 . NOTE Subclause 7.2.7 of IEC 60947-5-1 only applies to control switches suitable for isolation. 6 Mechanical requirements 6.1 General requirements 6.1 .1 Means shall be provided to enable the emergency stop device to be securely installed in its intended mounting position. The test shall be conducted according to 7.2.1 . 6.1 .2 The emergency stop device shall meet the requirements of 7.3, 7.4, 7.5, 7.6 and, where applicable, of 7.7.5. 6.1 .3 It shall be possible to operate and reset the emergency stop device under all normal service conditions. The test shall be conducted according to 7.2 to 7.4.