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6 OPTIONS AND PERIPHERAL EQUIPMENT
6.4 Molded-case circuit breakers, fuses
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Molded-case circuit breaker
Use a molded-case circuit breaker that has operation characteristics that will not be triggered by inrush current.
*1 The alphabetical letters in the table indicate the symbols of the selection example of crimp terminals.
Page 124 Selection example of crimp terminals (crossover wiring)
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Fuse
Use a fuse with a fusing characteristic that will not fuse under repeated inrush currents.
*1 The alphabetical letters in the table indicate the symbols of the selection example of crimp terminals.
Page 124 Selection example of crimp terminals (crossover wiring)
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Selection example of crimp terminals (crossover wiring)
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When the total number of connected units exceeds 14
If the total number of power regeneration converter units and drive units exceeds 14, use two power supplies. The following is
an example of wiring the control circuit when 25 drive units are connected.
*1 Install a dedicated molded-case circuit breaker for the control circuit power supply. Do not share the molded-case circuit breaker with the
main circuit power supply.
Number of connected converter units/drive units
Voltage
AC [V]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Molded-case circuit
breaker
30 A frame 5A
30 A frame 10A
30 A frame 15A
30 A frame
20A
30 A frame 30A
480
Wire size
2 (AWG 14)
3.5 (AWG 12)
5.5 (AWG 10)
Crimp terminal
a
Number of connected converter units/drive units
Voltage
AC [V]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Fuse [A]
5
10
15
20
25
30
600
Wire size
2 (AWG 14)
3.5 (AWG 12)
5.5 (AWG 10)
Crimp terminal
a
Symbol
Crimp terminal
Applicable tool
Manufacturer
a
FVD2-4
YNT-1614
JST (J.S.T. Mfg. Co., Ltd.)
b
FVD5.5-4
YNT-1210S
Power supply
Power supply
Molded-case
circuit breaker
(MCCB)
*1
Molded-case
circuit breaker
(MCCB)
*1
Power regeneration converter unit and 12 drive units
13 drive units