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10
431A - Toshiba Auxiliary Cabinet
The 431A Toshiba Auxiliary Cabinet is available in three basic configurations:
•
Two Transformers
•
One Transformer and a 12 pole PDP
•
Maintenance Bypass Panel (MBS) and a 12 pole PDP
NOTE: Units with PDP ship with the 12-pole Breaker Box Unpopulated. The customer is responsible for
supplying the circuit breakers for the PDP.
AC Input
3Φ-3W 0r
3Φ-4W
Figure 9-3a - 431A Auxiliary Cabinet with two transformers
AC Input
3Φ-3W 0r
3Φ-4W
Figure 9-3b - 431A Auxiliary Cabinet with one transformer and PDP
AC Input
3Φ-3W 0r
3Φ-4W
Figure 9-3c - 431A Auxiliary Cabinet with MBS and PDP
Figure 9-3 -
4300 Series Ancillary Cabinets Installation and Operation Manual
431A
Input
4300 UPS
Trans-
former
(208V
Wye)
UPS
IN
T1
431A
Input
4300 UPS
Trans-
former
(208V
Wye)
UPS
IN
T1
431A
Maintenance Bypass Switch
CB2
4300 UPS
UPS Input
Isolation
UPS
UPS
IN
OUT
CB1
T1
431A Auxiliary Transformer Cabinet Configuration Options
Output
Trans-
former
(208V
Wye)
Output
UPS
OUT
3Φ-3W or
3Φ-4W
T2
PDP
Output
UPS
OUT
3Φ-3W or
3Φ-4W
UPS
Output
Isolation
PDP
CB3
Output
3Φ-3W or
3Φ-4W
23
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