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8 User Guide Silcon DP300E Series 480V 400-500kVA
7OA0004 US rev. 02
Single Utility
Dual Utility
2.6 Operating the external service bypass switch, single systems
2.6.1 Bypassing the UPS
Action
1. Press
on the keyboard
2. Press
or on the keyboard until
3. Press
on the keyboard
4. Press on the keyboard
5. Check lamp indication on the bypass panel The green lamp (H003)
above the bypass switch
handle (Q003) lights
6. Turn the external bypass switch (Q003) The green lamp (H002)
to position “1“. above the output switch
handle (Q002) lights
7. Turn the output switch (Q002) to position “0“. Only the lamp (H002) above
the output switch handle
(Q002) lights now
8. Open the front door and press the red
“OFF“ push-button.
The acoustic alarm sounds for 30 secs.*
9. Turn the input switch (Q001) to position “0“.
Turn the bypass input switch (Q010) to position
“0”, if dual utility is present.
The red alarm LED below the display lights and
the acoustic alarm sounds for 30 secs.
* The acoustic alarm can be reset by the
key
EMERGENCY (UPS not alive)
1. Turn the bypass switch (Q003) to position “1“.
2. Turn the output switch (Q002) to position “0“.
3. Turn the input switch (Q001) to position “0“.
4. If dual utility is present, turn bypass input switch (Q010) to position “0”.
5. Change released system input fuse(s), if any.
Display shows
Lamp indication on
bypass panel
Display shows
Stop, Start & Operating the External Service Bypass Panel
Bypass operation
: NO
Bypass operation
: YES
**System OFF**
WARNING!
If the UPS is out of service for
more than 48 hours the
connected batteries might be
damaged. Refer to total
“Switching off“ as described in
chapter 2.4.1.