CASE STUDY

【Japan】 * Working place is usually dark since the circuit breaker is turned off at insulation resistance measurement. * Difficult to see the display in the dimly lit location. * Not often, but sometimes the worker forget to turn off the circuit breaker. * Misunderstanding easily happens if multiple scales should be checked depending on the output voltage.

【Japan】 It takes time to test the insulation of PV array and heavy equipment.  Insulation test of PV array is time consuming and hard work.