Manual Bypass Operation With Switch Board; Bypassing Load To Primary Source; Return From Primary Bypass Mode To Sts Operation - GE Digital Energy STS-230-25-2-RM Installation And Operating Manual

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Digital Energy Static Transfer Switch
4.2

Manual bypass operation with Switch Board

4.2.1

Bypassing load to primary source

NOTE
In case of STS failure, switch to bypass of active source
Changing operation mode from normal STS operation into primary bypass is performed by turning the
Integrated Switch placed on the Switch Board in counterclockwise direction:
1. Set the Integrated Switch into "1 PRIMARY BYPASS" position.
2. Set the Integrated Switch into "2 PRIMARY BYPASS STS ISOLATED" position.
Primary bypass is now on and the Static Transfer Switch is isolated from the mains.
4.2.2

Return from primary bypass mode to STS operation

Changing the operation mode from primary bypass into normal STS operation is performed by turning the
Integrated Switch placed on the Switch Board in clockwise direction:
1. Make sure that all connections between Switch Board and STS Board have been made correctly
and that both cover plates are fastened properly.
2. Set the Integrated Switch into "1 PRIMARY BYPASS" position.
3. Set OPERATION button into "AUTOMATIC" position (button is pushed).
4. Set PREFERED button into "PRIMARY" position.
5. Check if the LEDs on the Control Panel indicate the primary source is preferred, healthy and
currently supplying the load.
6. Set the Integrated Switch into "NORMAL" position.
Normal STS operation mode is now switched on.
OPM_STS_230_25A_2RM_1GB_V012
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GE DE STS: installation and operating manual 1.2 (GB)
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