I checked the insulation resistance value between transformer winding and earth putting 2.5 KV DC, and i got 16 mega ohm as IR. if increase the voltage to 5 KV, what would be the new IR value ? Higher than 16 mega ohm or lower ?
We have a battery bank for UPS system with Battery Voltage = 396 V .
Earlier when we take the voltage readings we were getting voltage half and half , like (positive to ground 198 V and Negative to ground 198 V) but recently voltage is showing difference like (Positive to ground -180 V and...