YASKAWA H6B1A002, Technical Reference

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3.3 Main Circuit Wiring
80 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
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Enclosed Bypass Input and Output Power Wiring Connections
The input disconnect switch is located in the upper right hand side of the bypass. The three-phase input power
connection is made to the input terminals of the disconnect. Refer to
Figure 3.4 for a representative example. Motor
Terminal Block TB3 is mounted to the contactor assembly or back panel (depending on rating), just above the bypass
contactor. The bypass three-phase output power connection to the motor is made to Terminal Block TB3.
Note:
The location of components are different for different bypass models.
A - Drive output contactor K2
B - Input contactor K1
C - Motor connections
D - Input power terminals
E - Ground screw F - A2 bypass control board
G - 120 V control transformer
H - Bypass contactor K3
I - Fuse block
Figure 3.4 Enclosed Bypass Circuit Components Example
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Factory Recommended Branch Circuit Protection
WARNING! Fire Hazard. Branch Circuit protection is required to be installed according to applicable local codes and the
requirements listed on the bypass nameplate. The bypass is suitable for use on a circuit capable of delivering not more than
100,000 RMS symmetrical amperes, 208/240 Vac and 480 Vac with the circuit breaker option or when protected by class J or class
L fuses as specified on the bypass nameplate. Failure to obey can cause fire and damage to the bypass and drive or injury to
personnel.
Yaskawa recommends installing branch circuit protection according to maintain compliance with UL508C.
Semiconductor protective type fuses are preferred. Alternate branch circuit protection devices are also listed in this
manual.
F
G
D
E
B
H
A
C
E
I