Bulgaria, Mineralni Bani
...SCOPE: 1. Electrical installations and equipment for voltages up to and above 1000 V: - Resistance of protective grounding systems; - Resistance of lightning protection grounding systems; 2. Electrical installations and equipment for voltages up to 1000 V: - Insulation resistance; - Impedance of the "Phase - protective conductor" circuit; - Protective circuit breakers (RCDs): touch...

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