Hioki 3155-01, Instruction Manual

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6.1 Measurement Network C
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6.1.1 Leakage Current Measurement Types and Their Allowable
Values for Ordinary Electrical Equipment
NOTE
The 3155 unit contains an allowable value judgment function, which compares
the maximum value to the allowable value.
To use this function, set the judgment function to ON, and set each of the
allowable values.
(1) Leakage current measurements for ordinary electrical equipment
The 3155 can perform the following leakage current measurements:
・ Earth leakage current (for class equipment only)
・ Enclosure leakage current
(2) Allowable values
The allowable values vary per the applicable regulations.
Example:
Allowable values per IEC 60950 (1991-10) + am4 (1996-07)
・ Class equipment (hand-held): 0.75 mA
・ Class equipment (movable (other than hand-held)): 3.5 mA
・ Class equipment (stationary, pluggable type A): 3.5 mA
・ Class equipment (stationary, permanently connected or pluggable type B)
Equipment with earth leakage current not exceeding 3.5 mA: 3.5 mA
Equipment with earth leakage current exceeding 3.5 mA: 5% of input
current
・ Class equipment: 0.25 mA
Allowable values vary per the applicable laws and regulations, but when using
the 9498 NETWORK C (conforms to IEC/TR 60990), the default value is 3.5
mA (0.25 mA for other than class
equipment). Set the allowable value as
necessary.