The HVI237 is an isolating converter providing true 3-way galvanic isolation up to 5kV rms. The HVI237 produces two unipolar output signals from one input signal (no isolation between outputs). The high input output isolation makes the unit suitable for monitoring DC power supplies used in transport and mining machinery. Final calibration is trimmed using the front accessible zero and span 15-turn trim adjustments. Maximum current drive is 20mA and maximum voltage drive is 16V. All units are fitted with a 500mS filter that can be changed on request. Surge protection for power supply and input is standard with all A.P.C.S. modules.