Hioki MR8905 - 2 Channel High Voltage Input Module

Simply plug the MR8905 into the MR8875 Memory HiCorder to accommodate a broader range of applications requiring direct input in CAT III (600 V) and CAT II (1000 V) environments.

Development Background

Recording instruments are essential tools in the development of electric vehicles (EVs), which increasingly are entering into widespread use, to evaluate motor performance. Since EVs incorporate large numbers of batteries, high-voltage measurement has become a necessity.

Another application involves equipment designed for use in emerging nations, where commercial power supplies tend to operate at higher voltages and exhibit greater voltage fluctuations than in Japan. Consequently, there are many examples of abrupt voltage fluctuations damaging electrical and precision equipment. Demand for high-voltage measurement in order to analyze equipment operation is increasing as manufacturers work to develop devices that can withstand these challenging operating conditions.