執行標準：IEC 61730-2:2016 "接地連續性試驗"

BR-PV-GCT Ground Continuity Test System
Implementation of standards: IEC 61730-2:2016, UL 1703-2015

Test Purpose:
To demonstrate that there is a conductive path between all exposed conductive surfaces of the module, so that the exposed conductive surfaces can be adequately grounded in a PV system. This test is required only if the module has exposed conductive parts such as a metal frame or a metallic junction box.

Procedure: 1. Select the manufacturer's designated grounding point and recommended grounding connection. Attach to one terminal of the constant current supply. 2. Select an adjacent (connected) exposed conductive component with the greatest physical displacement from the grounding point, and attach to the other terminal of the current supply. 3. Attach the voltmeter to the two conductive components attached to the current supply in proximity to the current leads. 4. Apply a current 2.5 times ± 10% of the maximum over-current protection rating of the module for a minimum of 2 min. 5. Measure the applied current and the resultant voltage drop. 6. Reduce the current to zero. Five times test in different connection position. Pass criteria: The resistance between the selected exposed conductive component and each other conductive component of the module shall be less than 0.1Ω .

Apparatus
The apparatus is as follows:
a) A constant current supply capable of producing a current that is 2.5 times the maximum overcurrent protection rating of the module under test.
b) A suitable voltmeter.
NOTE 1: According to. IEC 61730-1 the maximum overcurrent protection rating has to be provided by the manufacturer. The maximum overcurrent protection rating is verified in MST 26 (Reverse current overload Test).
NOTE 2: Common types of overcurrent protection are fuses or circuit breakers.

Pass criteria:
The resistance between the selected exposed conductive component and each other conductive component of the module shall be less than 0.1 Ω.