Figure 2-2 Single Line Diagram - Bypass Operation: Load Fed Through Static Bypass Line - Toshiba G9000 SERIES Installation And Operation Manual

480/480 v 1000kva
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B) Bypass Operation: Load Power supplied through UPS internal static bypass line.
CB
Bypass
Input
User
supplied
MCCB
CB
AC
input
User
supplied
MCCB
CB
Battery
Cabinet
External
BATTERY
Power Flow
Not in Use

Figure 2-2 Single Line Diagram - Bypass Operation: Load fed through static bypass line

Referring to Figure 1.2: The Internal Bypass line is a Hard-wired line through 52S which supplies
the critical load with unconditioned bypass input power. Upon switching to the Internal Bypass line,
the Static Transfer Switch line through CB3 (herein after STS contactor CB3) supplies the power
immediately, and then the Internal Bypass line through 52S supplies the power. In the event of a
switching to the Bypass line, the power to the critical load will be uninterrupted. The purpose of this
Internal Bypass line is to route power to the critical load while the UPS module is de-energized
(converter and inverter), and during Start-up before the system is fully operational.
G9000 1000kVA Installation and Operation Manual – 91469-004
Bypass Module
52 S
CB 3
Static Transfer
Switch
CONVERTER / INVERTER
CB 1
CHARGER
CB2
CONVERTER / INVERTER
CB 1
CHARGER
CB2
CONVERTER / INVERTER
CB 1
CHARGER
CB2
52 C
UPS Module
52 C
UPS Module
52 C
UPS Module
UPS
CABINET
Output
9

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