Mitsubishi Electronics MR-J2S- CL 2Selection example, Options And Auxiliary Equipment, 14

14.OPTIONS AND AUXILIARY EQUIPMENT

(2)Selection example

Indicated below is an example of selecting a leakage current breaker under the following conditions:

NV

2mm2 5m(196.85inch)		2mm2	5m(196.85inch)
	Servo			SM	Servo motor
	amplifier
	MR-J2S-60CL				HC-MFS73

Ig1 Iga Ig2 Igm

Use a leakage current breaker designed for suppressing harmonics/surges.

Find the terms of Equation (14.2) from the diagram:

Ig1		20	5	0.1 [mA]
			1000
Ig2	20		5	0.1 [mA]
			1000

Ign 0 (not used)

Iga 0.1 [mA]

Igm 0.1 [mA]

Insert these values in Equation (14.2):

Ig 10 {0.100.11 (0.10.1)}

4 [mA]

According to the result of calculation, use a leakage current breaker having the rated sensitivity current (Ig) of 4[mA] or more. A leakage current breaker having Ig of 15[mA] is used with the NV- SP/CP/ SW/CW/HW series.

14 - 40