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MITSUBISHI ELECTRIC 2033D SERIES UPS
MITSUBISHI
ELECTRIC
2033D SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
1-6
B) Internal Static Bypass Line
FIGURE 1.2 Single Line Diagram- Bypass Operation. Load fed through static bypass line.
Referring to Figure 1.2, the Internal Static Bypass line is a Hard wired line through Static
Transfer Switch which supplies the critical load with unconditioned input power. The
purpose of this line is to route power to the critical load while the UPS module is
de-energized during Start-up before the system is fully operational.
The internal control system determines the operation of the two paths, with the load
powered from the inverter being the normal operation.
UPS Module
Power Flow
Not in Use
CB
FB
72B
52RS
CONVERTER
INVERTER
Output
52C
52RC
FI
FO
BATTERY
User
su
pp
lied
52CS
Maintenance
Bypass
Switch
50kVA, 80kVA:
External Battery
Static Transfer
Switch
CB
AC Bypass
In
put
AC input