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The Hioki MR8905 input module features direct high –voltage input of up to 1000 V DC and 700 V AC without using a differential probe. This is ideal for primary and secondary measurements of UPS power supplies and commercial power supply transformers, for recording the primary and secondary waveforms of inverters, and for measuring high-voltage power supply lines, such as 380 V and 480 V systems used in many countries. 

• AC RMS measurement of voltages up to 600V
• 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
• Characteristics testing of power equipment (load rejection testing, circuit breaker testing)
• Measurement of 3-phase voltage and current as well as sensor output signals
• On/off measurement of circuit breakers
• Connects to the MR8875 Memory HiCorder

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.

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.