Hioki CM4002, Instruction Manual

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38
Measuring Leakage Current
Locating an insulation failure (identifying GFCI and RCD trip events)
By measuring leakage current of the entire circuit using the ground wire of the transformer
(location 1 in the figure on the next page), you can determine the presence or absence of an
earth leakage in accordance with changes in leakage current.
When you find an earth leakage, perform the bundled measurement of all the wires from the
power supply side toward the load side to locate an insulation failure.
To investigate an intermittent earth leakage, such as intermittent ground-fault circuit interrupter
(GFCI) and residual-current device (RCD) trip events, the following functions are convenient.
Event recording function (p. 62)
When the measured value exceeds the set threshold value, the event data (event occurrence
time, event stop time, and maximum value) can be recorded. The Z3210 Wireless Adapter (option)
is required.
For detail information, please visit our website.
GENNECT Cross > Functions > Event Recording
https://gennect.net/en/cross/event-recording
Output function
CM4003
You can record the output value with a recorder. (p. 51)
HIOKI CM4002A961-02