MITSUBISHI ELECTRIC 2033D SERIES UPS systems - Manual (Page 12)

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
supplied
52CS
Maintenance
Bypass
Switch
50kVA, 80kVA:
External Battery
Static Transfer
Switch
CB
AC Bypass
Input
AC input