Eaton STS 2000A - 8.3.2 Procedure for Going to Bypass 1

Eaton Static Transfer Switch 2000A 3-Pole Installation and Operation Manual 164001127—Rev 01 45
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Figure 18. Procedure for Going to Bypass 1
1. Open Source 2 MCCB.
Note: Source 1 is assumed the active power source at the start of this procedure.
2A. Rotate and remove Key2 from
Source 2 MCCB.
2B. Insert key2 from Source
2 into Bypass 1 MCCB (top
lock) and turn key to lock.
4. Close Bypass 1 MCCB.
3. Verify key3 is Bypass 1
MCCB (bottom lock).
If not, rotate and remove key
from Bypass 2 (bottom lock);
insert key into Bypass 1
(bottom lock); and
turn key to lock.
2B
5. Open Source 1 MCCB.
3
6. Open Isolation MCSWs.
(Only one isolation MCSW
may be present. Second
MCSW is optional.)
Source 1, 2
MCCBs
Bypass 1, 2
MCCBs
Isolation 1, 2
MCSWs
Bypass procedure is illustrated in Figure 18. The load is assumed to be powered by Source 1.
1. Open Source 2 input MCCB.
2. Rotate and remove the key from the Source 2 input MCCB; insert it in the Source 1 BypassMCCB and turn
the key.
3. Verify key 3 is in Bypass 1. (If key 3 is located in Bypass 2, remove it and insert it in Bypass1.)
Operational Modes