7.4.1
Starting the parallel UPS in the double conversion mode
(default mode)
To start the UPS system:
1.
Open the front door by lifting the latch from the bottom and turning it to the
right (counterclockwise). Swing the door open.
2.
Make sure that all input and bypass input switches are open.
Note: This is only necessary for the 100/120 kVA units with the optional
MBS and input switches installed.
3.
If the UPSs contain a maintenance bypass switch (MBS), make sure that
the MBS is open.
4.
Close all module output breakers (MOBs).
5.
Close the UPS input feeder circuit breakers.
6.
If the UPSs are wired for dual input, close all of the UPSs bypass input
feeder circuit breakers.
7.
Close all input switches.
8.
Close the neutral switch in 100/120 kVA units.
9.
If the UPSs contain a bypass input switch (BIS), close the BIS.
10. Close the door and secure the latch.
11. Close the external battery breakers.
12. Wait until the UPS control panel display becomes active and indicates logic
power.
13. Verify that no alarms are active. Notices are not to be misinterpreted as
alarms.
14. Select the CONTROLS symbol in the main menu bar.
The System Control screen is displayed.
15. If not already selected, select UPS in the System Control screen.
16. In the UPS System Control screen, select the LOAD OFF → NORMAL
command and press the
push button.
17. If requested, enter the Level 1 password. The default Level 1 password is
1111.
After the password is entered, the system goes to the bypass at first and
simultaneously charges the DC-link. When the DC-link is at the appropriate
level, the rectifier and inverter start up.
Once all inverters reach full voltage, the UPS output contactor closes and
the static switch turns off. Power is now supplied to the critical load in the
double conversion (normal) mode. It takes approximately one minute for
the UPS to achieve the double conversion (normal) mode.
The green normal status indicator is illuminated.
18. If the UPS contains an output switch, close the output switch.
Eaton 93E Generation 2 UPS 100-200 kVA
(380/400/415V)
User's and installation guide
©
Eaton Corporation plc 2019. All rights reserved.
Revision: 002
Document ID: P-164000848
96 (118)
