Switch The Ups From Maintenance Bypass To Online - Toshiba 5000 Series Installation And Operation Manual

13.4

Switch the UPS from Maintenance Bypass to Online

Refer to the following steps to switch the UPS to from Maintenance Bypass to Online.
1. Verify that the UPS is in Bypass via the mimic panel.
2. Verify that the Bypass and Inverter LED's are on. If so, the key in the SKRU can now be removed.
3. Open the doors to the I/O & MBS Bay. Ensure Power Electronics Bay doors remain closed.
4. Close MCCB-1 (UPS Input Breaker) and MCCB-2 (Bypass Input Breaker).
5. Wait until the UPS turns ON. Touch START button on main screen.
6. Close all Battery breakers.
7. Extract the key from the SKRU. Insert it in the lock on MCCB-4, and unlock MCCB-4.
8. Close MCCB-4 (UPS Output Isolation Breaker).
9. Open MCCB-3 (Maintenance Bypass Breaker).
10. Lock MCCB-3. Remove key from MCCB-3, and insert it in SKRU.
11. Close and secure the doors on the I/O & MBS Bay.
12. Touch and hold the UPS button for 2 seconds (this will transfer the UPS to inverter operation.)
The unit is now in Inverter Operation Mode and the load is protected.
5000 Series 3P1 Industrial UPS Installation and Operation Manual – 92973-001
65