Hioki PW9020 Safety Voltage Sensor (No Metal Contact Measurement)

Hioki PW9020 Safety Voltage Sensor

As the voltage sensor for the Clamp On Power Logger PW3365, the world’s first no-metal-contact power meter, the Voltage Sensor PW9020 measures voltage from outside conductor insulation.

Currently, numerous companies are working to save energy. As the number of opportunities for measuring power consumption as part of those efforts grows, workers without adequate knowledge and experience are being called upon to make power measurements.

Clamp-on power meters are the standard instrument used in power measurement, and while it has been possible to use clamp-on sensors to measure currently safely from outside conductor insulation, it remains standard practice to measure voltage by placing clips in contact with metal terminals on circuit breakers or other components. This approach exposes workers to the risk of short-circuit accidents, which can be caused if they inadvertently allow a metal clip to come into contact with a nearby metal terminal, as well as electric shock, which can occur if they mistakenly touch a metal conductor themselves.

By allowing the PW3365 to accurately measure voltage from outside conductor insulation, the PW9020 makes it possible for the first time for workers to avoid the risk of electric shock and short-circuit accidents during power measurement. The German Design Award 2016 Special Mention recognizes this innovative contribution to the field. Furthermore, the judging committee praised the design of the grip, which is shaped so as to enable slip-free manipulation while wearing gloves, and of the jaws, whose different lengths make it easy to apply them to cables of different diameters.

*1: Shielded wires cannot be measured.
*2: For frequencies of 45 Hz to 66 Hz.
Effects of humidity: Add the following to the combined accuracy
                               (for voltage, power, and phase) with the PW3365-20
                               Accuracy within ±1% f.s., phase within ±1°,
                               measuring an insulated wire at a humidity of 70% to 80% RH
Effects of adjacent wires: Add the following to the combined accuracy
                               (for voltage and power) with the PW3365-20
                               Within ±1% f.s. while a wire with a phase
                               difference of 400 V is in contact with the grip