Mitsubishi Electric MELSERVO-J3W Series Instruction Manual page 184

10. CHARACTERISTICS
10.5 Inrush currents at power-on of main circuit and control circuit
The following table indicates the inrush currents (reference data) that will flow when the maximum permissible
voltage (253VAC) is applied at the power supply capacity of 2500kVA and the wiring length of 1m.
Servo amplifier
MR-J3W-22B
MR-J3W-44B
MR-J3W-77B
MR-J3W-1010B
Since large inrush currents flow in the power supplies, always use no-fuse breakers and magnetic contactors.
(Refer to section 11.6.)
When circuit protectors are used, it is recommended to use the inertia delay type that will not be tripped by an
inrush current.
Main circuit power supply (L
120A (Attenuated to approx. 2A in 10ms)
120A (Attenuated to approx. 12A in 20ms)
10 - 7
Inrush currents (A - )
0 p
, L , L ) Control circuit power supply (L
1 2 3
20 to 30A
(Attenuated to approx. 0A in 1 to 2ms)
, L )
11 21