IEC 61439-1 requires every assembly to pass routine verification before dispatch. The core checks are:
- Dielectric test — confirms insulation withstands the specified test voltage.
- Insulation resistance — measured across live parts and earth.
- Wiring and operation — inspection against the drawings and functional checks of protection and controls.
- Clearances and creepage, protective circuit continuity, IP and torque checks.
Ask for the test record with every panel you buy. Read about our quality process.