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13. OPTIONS AND AUXILIARY EQUIPMENT
(2) Selection example
Indicated below is an example of selecting a leakage current breaker under the following conditions.
M
NV
Ig1
Iga
Ig2 Igm
2mm
2
5m 2mm
2
5m
Servo amplifier
MR-E-40A-QW003
Servo motor
HF-KE43W1-S100
Use a leakage current breaker generally available.
Find the terms of Equation (13.1) from the diagram.
Ig1
20
1000
5
0.1
[mA]
Ig2
20
1000
5
0.1
[mA]
Ign
0 (not used)
Iga
0.1 [mA]
Igm
0.1 [mA]
Insert these values in Equation (13.1).
Ig
10 {0.1 0 0.1 1 (0.1 0.1)}
4.0 [mA]
According to the result of calculation, use a leakage current breaker having the rated sensitivity current (Ig)
of 4.0 [mA] or more. A leakage current breaker having Ig of 15 [mA] is used with the NV-
SP/SW/CP/CW/HW series.
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