CAN/ULC-D61243-3-00

1 SCOPE This part of IEC 61243 is applicable to two-pole voltage detectors to be used on electrical systems for nominal voltages not exceeding 1 000 V a.c. and/or 1 500 V d.c. and below 500 Hz (nominal frequencies). The detector types are classified as follows: voltage class A: up to and including 500 V a.c./750 v d.c.; voltage class B: up to and including 1 000 V a.c./1 500 V d.c. This part of IEC 61243 also applies to supplementary functions such as phase indications, rotating field indications, and continuity checks (see annex E). Furthermore, it applies to accessories such as crocodile clips, detachable leads and contact electrode extensions. Unless otherwise specified, all the voltages defined in this standard refer to phase-to-phase voltages of three-phase systems. Detectors may be used in other than three-phase systems, then the applicable phase-to-phase or phase-to-earth (ground) voltages are to be used to determine the operating voltage. Low-voltage detectors covered by this standard are not intended to provide measurement of absolute values. Measuring devices are excluded from this standard. NOTE - The requirements for measuring devices are specified in IEC 61010-1 and IEC 61010-2-031.