IEC 61557-17:2021 pdf download – Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC – Equipment for testing, measuring or monitoring of protective measures – Part 17: Non-contact AC voltage indicators.
2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61 01 0-031 :201 5, Safety requirements for electrical equipment for measurement, control and laboratory use – Part 031: Safety requirements for hand-held probe assemblies for electrical measurement and test IEC 61 01 0-031 :201 5/AMD1 :201 8 1 IEC 61 326-1 :2020, Electrical equipment for measurement, control and laboratory use – EMC requirements – Part 1: General requirements IEC 61 557-1 :201 9, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. – Equipment for testing, measuring or monitoring of protective measures – Part 1: General requirements 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 61 557-1 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp
3.3 sensitivity range range of voltage where the non-contact AC voltage indicator is triggering 4 Requirements 4.1 General The requirements of IEC 61 557-1 :201 9, Clause 4 and the following requirements apply. 4.2 Influencing quantities – Operating uncertainty (B), percentage operating uncertainty (B [%]) IEC 61 557-1 :201 9, 4.2 does not apply. 4.3 Rated operating conditions The following rated operating conditions shall apply: a) ambient temperature range from: −1 0 °C to +45 °C; b) maximum relative humidity 95 % at temperatures up to 31 °C, decreasing linearly to 50 % relative humidity at 45 °C; c) distance through air between live conductor and probe tip: ≤ 2 mm; d) position within a solid angle of 30° around the vertical axis between probe tip and conductor; e) capacitance greater than or equal to 1 00 pF between the hand-held part and reference earth, see Figure 2. 4.4 Battery test facility In addition to IEC 61 557-1 :201 9, 4.4, the following applies. Non-contact AC voltage indicators shall have a self-test capability. As a minimum, the self-test function shall confirm correct operation of the batteries and of the voltage indication. 4.5 Safety The requirements in accordance with IEC 61 557-1 :201 9, 4.5, do not apply. The following requirements shall apply instead. All electrical safety aspects are covered by IEC 61 01 0-031 . The hand-held parts of the non-contact AC voltage indicator and the probe tip shall be separated by a protective fingerguard, see Figure 1 .
4.6 Electromagnetic compatibility 4.6.1 Immunity For immunity requirements, IEC 61 326-1 :2020, Table 2 shall apply. 4.6.2 Emission For emissions, either class A or class B limits in accordance with IEC 61 326-1 :2020, 7.2 shall apply. 4.7 Indication The presence of voltage on a conductor within the specified sensitivity range of the non-contact AC voltage indicator shall be indicated visually. Additional means of indication, for example acoustic means or vibration, are permitted. 5 Marking and operating instructions The requirements of IEC 61 557-1 :201 9, Clause 5 do not apply. The following requirements shall apply instead. The non-contact AC voltage indicator shall be marked in accordance with IEC 61 01 0-031 :201 5, Table 1 , with symbol 5 and symbol 7, and at least with the rated voltage to earth and measurement category, the rated frequency and the specified range of sensitivity.
6 Tests 6.1 General The requirements of IEC 61 557-1 :201 9, Clause 6 do not apply. The following requirements shall apply instead. 6.2 Test of mechanical strength Compliance with IEC 61 557-1 :201 9, 4.7 shall be tested (type test). A vibration test shall be carried out in accordance with IEC 61 557-1 . A drop test shall be carried out in accordance with IEC 61 01 0-031 . After these tests, the non-contact AC voltage indicator shall show no damages or cracks which could cause a hazard and shall show no loss of function and sensitivity. Compliance shall be tested as follows: a) visual inspection (type test and routine test); b) verification of clearances and creepages; c) test of dielectric strength of solid insulation between probe tip and hand-held parts; d) test of indication in accordance with 6.3 (type test and routine test); e) functional test of battery test facility and self-test (type test and routine test).