NK Technologies released a new AGV Series Ground Fault Relay with the ability to detect faults to earth on the load side of a variable frequency drive. This unique capability addresses a challenge caused by the carrier or switching frequency of the drive. Typically, the fault current will be detected at the base frequency, which…

NK Technologies has released the AGT-FD Series, new ground fault sensors that detect faults to earth from 0 mA to 100 mA and produce an output signal of 0–10 VDC in proportion to the amount of current passing to ground. The output is equal to the RMS value of the earth leakage. The AGT’s sensing…