Toshiba 431A operation manual 4300 UPS, 431B Batt. Cabinet Optional

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431A Auxiliary Transformer Cabinet (Optional)

431M MBS (Optional)

Maintenance Bypass Switch

4300 Series Ancillary Cabinets

						CB2
			4300 UPS
						Bypass Thyristor
	Input
	Trans-	UPS Input		EMI	SYNC
	former	Isolation
				Filter
		(208V			Fuse		Fuse
AC Input
		Wye)
3Φ-3W 0r		CB1	MCCB	Input			Output
3Φ-4W					AC/DC	DC/AC
	T1
				Contactor	Rectifier	Inverter	Contactor
					DC/DC
					Converter

Ground	Fuse
Wire

	UPS
EMI	Output
	Isolation
Filter
	CB3

Output
Trans-
(208V former	Output
Wye)
	3Φ-3W or
T2	3Φ-4W

Installation and Operation Manual

431B Batt. Cabinet (Optional)

Battery Breaker 1 Battery Breaker 2

Figure 9-2 - One-Line Diagram of 4300 UPS with Optional matching 431M MBS, 431B Battery Cabinet, and 431A Transformer Cabinet