In addition to the scope of IEC 61326-1, this part of IEC 61326 specifies more detailed test
configurations, operational conditions and performance criteria for equipment covered by
Annex A of IEC 61326-1 which is:
– used for testing, measuring or monitoring of protective measures in low-voltage
distribution systems, and;
– powered by battery and/or from the circuit measured, and
– portable.
Examples of such EUT include, but are not limited to, voltage detectors, insulation testers,
earth continuity testers, earth resistance testers, loop impedance testers, “residual-currentdevice-
testers” (RCD-testers) and phase sequence testers as defined in IEC 61557.
The manufacturer specifies the environment for which the product is intended to be used
and/or select the appropriate test level specifications of IEC 61326-1.