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Digital Energy
Static Transfer Switch
4.2
Manual bypass operation
4.2.1
Bypassing load to primary source
NOTE
In case of STS failure, switch to bypass of active source
Initial states of the switches are described in table 3 (figure 8). The Interlock Plate is set in "NORMAL MODE"
position. Bypassing the load to the primary source is achieved by the following steps:
1.
Set button "PREFERRED SOURCE" into "PRIMARY" position (button is released if primary
source is preferred)
2.
Check if LEDs on the control panel indicate that the primary source is preferred, healthy and
currently supplying the load.
3.
Open the door of the STS.
4.
Unscrew the knurled nut that locks the Interlock Plate.
5.
Set switch K5 STS SECONDARY SOURCE into "OFF" position.
6.
Move the Bypass Interlock Plate into PRIMARY BYPASS position.
7.
Set switch K1 STS PRIMARY BYPASS into "ON" position.
8.
Set switch K3 STS OUTPUT into "OFF" position.
9.
Set switch K4 STS PRIMARY SOURCE into "OFF" position.
10. Screw the knurled nut that locks the Interlock Plate.
After described above procedure, the states of the switches should be as in table 4 (figure 9).
OPM_STS_400_25A_100_1GB_V011
Table 4
K1 STS
PRIMARY BYPASS
K2 STS
SECONDARY BYPASS
K3 STS
OUTPUT
K4 STS
PRIMARY SOURCE
K5 STS
SECONDARY SOURCE
23
ON
OFF
OFF
OFF
OFF
GE DE STS: installation and operating manual 1.1 (GB)
g
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