YASKAWA GA800

Electrical Installation
5
5.3 Main Circuit Wiring
YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting 375
A - Main circuit power supply
B - Branch circuit protection
*1
C - 6-Phase/12-Pulse isolation transformer
D - Fuse
*2
E - Dynamic braking resistor (option)
*3
F - CDBR dynamic braking unit (option)
*4
G - Motor
Figure 5.30 Standard 12-Pulse Input Main Circuit Terminal Connections
*1 Refer to Short Circuit Protection Requirements for UL Listing on page 419 for fuses for the secondary side of the 6-Phase/12-Pulse
transformer.
*2 Refer to local codes for correct branch circuit protection (BCP) on the primary side of the 6-Phase/12-Pulse transformer.
*3 You can install a dynamic braking resistor to terminals - and +3 on models Txxx.
*4 You can install a CDBR dynamic braking unit to models Txxx.
A - Branch circuit protection
B - Input reactor (optional)
C - Fuse
D - Delta to Wye transformer
E - Balancing reactor
F - Braking resistor (optional)
G - CDBR braking unit (optional)
H - Motor
Figure 5.31 Hybrid 12-Pulse Main Circuit terminal Connections
■ Input Phase Loss Detection
NOTICE: Damage to Equipment. Set L8-05 = 4 [Input Phase Loss Protection Sel = Enabled] to detect input phase loss. If L8-05 ≠ 4,
it can cause damage to the drive main circuit from input phase loss.