OPERATION
Step User Action System Response
1 User commands “START SYSTEM”
2 MV UPS block performs a self-check
3 MV UPS block checks if all its precharge
conditions are met
4 The MV UPS(s) synchronize(s) with utility
voltage in magnitude, frequency and phase
angle, then it closes S
out
and then S
in
5
When sufficient MV UPS blocks are on-line
(configured in parameters), the system S
abp
is
opened
6 After S
out
and S
in
are closed, the MV UPS unit
opens S
abp
7
After the S
apb
is opened, the MV UPS system
has completed the transition to power
conditioning mode
Table 8.2: MV UPS starting steps
Figure 8.6: MV UPS operating in Power Conditioning Mode
To Next Page
Loading...
