O&M Manual –90E1720004
Section 8 Operation Page 28 of 52
Figure 15: Transfer Switch Cradle
Bypass Mode
RTS03-ABL (Load Break) Operation
Load break bypass-isolation switches allow the transfer switch to be bypassed and isolated for
repair or inspection, regardless of the position and condition of the transfer switch. It is
designed to break power to the load while being bypassed. After the switch has been bypassed
it can then be isolated and racked out of the enclosure.
RTS03-ABO (Overlapping) Operation
Overlapping bypass-isolation switches allow the transfer switch to be bypassed and isolated for
repair or inspection, without interrupting power to the load. It is designed to bypass to the same
source that the transfer switch is connected. This is accomplished by “overlapping” the load
and source bypass contacts briefly during bypass operation. There are internal interlocks that
prevent bypassing to the source that the switch is not connected. After the switch has been
bypassed it can then be isolated and racked out of the enclosure.
Load Test and No-Load Test
Load tests and no-load test can be performed without affecting the load when the transfer switch
is bypassed and racked in (not isolated).
Moto
Load
Finge
Clusters
Source
1
Source 2
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