Hioki MR8901 4 Channel Analog Input Module

Evaluation of EV inverters and motors

• Evaluation of photovoltaic (PV) generation power conditioners
• Analysis of malfunctions of precision equipment and appliances such as air-conditioners and printers
• Analysis of malfunctions of uninterruptible power supply (UPS) input and output DC voltages

The Hioki MR8901 is a 4 channel, voltage measurement, DC to 100kHz bandwidth analog input module for the Hioki MR8875.

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.