Yaskawa Σ-III Series - Manual (Page 13)

10 Wiring
E-11
10 Wiring
10.1 Molded-case Circuit Breaker and Fuse Capacity
* 1. Nominal value at the rated load. The specified derating is required to select an appropriate
fuse capacity.
* 2. Cutoff characteristics (25 ° C): 200% two seconds min. and 700% 0.01 seconds min.
Note: 1. Do not use a fast-acting fuse. Because the SERVOPACK’s power supply is a capacitor
input type, a fast-acting fuse may blow when the power is turned ON.
2. The SGDS SERVOPACK does not include a protective grounding circuit. Install a
ground-fault protector to protect the system against overload and short-circuit or protec-
tive grounding combined with the molded-case circuit breaker.
10.2 Main Circuit Wiring
SGDS SERVOPACKs are suitable under the following conditions.
• With 100 V class: Less than 5000 Arms,120 V maximum.
• With 200 V class: Less than 5000 Arms, 240 V maximum.
SERVOPACKs must be used with UL-listed fuses or circuit breakers, in accordance with the
National Electrical Code (NEC).
Use 75 °C heat-resistant copper wires or an equivalent.
Main Circuit
Power Supply
SERVOPACK Model Power Supply
Capacity per
SERVOPACK
(kVA)
Current Capacity of the
Molded-case Circuit Breaker
and the Fuse
(A
rms
)
∗ 1, ∗ 2
Rated Voltage
Capacity
(kW)
SGDS- Fuse MCCB
Single-phase
100 V
0.03 A3B 0.25
4
250 V 240 V
0.05 A5F 0.25
0.10 01F 0.40
0.20 02F 0.60 6
0.40 04F 1.2 12
Single-phase
200 V
0.05 A5A 0.25
4 0.10 01A 0.40
0.20 02A 0.75
0.40 04A 1.2 8
0.80 08A 2.2 16
Three-phase
200 V
0.45 05A 1.4 4
1.0 10A 2.3 7
1.5 15A 3.2 10
2.0 20A 4.3 13
3.0 30A 5.9 17
5.0 50A 7.5 28
6.0 60A 12.5 32
7.5 75A 15.5 41