Trane RTHD Troubleshooting Manual page 38

38
Starter
1K3
1K3
Motor Starts in
Wye
Configuration
1K2
L2
Power Flow
Figure 19.Y-Delta Starter Sequence
1K3
1K3
If 1.6 seconds after 1K1
closed, no current was
detected by all three CT´s
for the last 1.2 seconds,
then ¨Starter Fault Type
III¨ is Displayed.
1K2
L2
Power Flow
Figure 20.Y-Delta Starter Sequence
L1
1K1
1K4
R
1K4
1K4
1K1
1K2
L1
1K1
1K4
R
1K4
1K4
1K1
1K2
1K2
1K1
L3
1K2
1K1
L3
RLC-SVD05A-EN