10-4 MHT258a (Engl.)
10.2 Auto circuit breaker (FAB, MCCB), earth leakage circuit breaker (ELCB) and magnetic contactor (MC) : Recommended Fuji’s
type
FAB or ELCB is installed on the power supply side for turning power supply and promptly cutting off a fault current such as short-circuit current.
MC is used when amplifiers are disconnected from the power supply with an external signal or in the case of power ON/OFF from remote
operation panels.
The types are applicable to the power supply capacity is up to 500 [kVA], specified cable diameter size with the wiring length within 20 [m] is
used, and ON/OFF of the primary side of one amplifier is performed. Connect an AC reactor if the power supply capacity exceeds
500 [kVA].
(i) For 200[V] class input voltage of amplifier
Amplifier output [kW] 0.03 to 0.2 0.4 0.75 to 1.5 2 3 4, 5
Amplifier type RYS□□□S3-VVS 300 to 201 401 751 to 152 202 302 402, 502
FAB type SA 33B/5 33B/10 33B/15 53B/30 53B/40 33B/50For each
amplifier
current [A] 5 10 15 30 40 50
ELCB type EG 33B/5 33B/10 33B/15 53B/30 53B/40 53B/50
Fuji’s
Recommended
type
MC type SC- 5-1(19A) 5-1 (32A) 1N (50A) 2N (60A)
(ii) For 100[V] class input voltage of amplifier
Amplifier output [kW] 0.05 0.1 0.2
Amplifier type RYS□□□S3-VVS6 500 101 201
FAB type SA 33B/3 33B/5 33B/10For each
amplifier
current [A] 3 5 10
ELCB type EG 33B/3 33B/5 33B/10
Fuji’s
Recommended
type
MC type SC- 5-1(32A)
10.3 Surge suppressor (surge killer)
Shown below are recommended surge suppressors (for 250 [V] or less ) to be installed on peripheral devices (magnetic contactor, solenoid,
brake, etc. ) of amplifier.
DC equipment should be equipped with a diode for surge voltage suppression.
[unit : mm]
For magnetic contactor, etc. For control relay, etc.
300 40±1 30±1
27.5
500[
Ω
] (1/2[W])+0.2[
μ
F]
Type : S2-A-O
200[
Ω
] (1/2[W])+0.1[
μ
F]
300 40±1 20±1
27.5
Type : S1-B-O
Protection circuit, example
AC circuit (C-R circuit) DC circuit (diode)
Load
Load
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