14
User Guide DP300E
7OA0001 GB rev.09
Service Bypass Switch
Bypass operation
: NO
Bypass operation
: YES
**System OFF**
Display shows
Display shows
Warning:
If the UPS is out of service for
more than 8 days the
connected batteries might be
damaged. Refer to total
„Switching off“ as described in
Instal. Guide Chapter 7.0.
Lamp indication
on bypass panel
Bypass operation
7.2.1
Bypassing the parallel UPS system
Action
Point 1-4 can be carried out with any of the parallel systems, however this will switch all
systems into bypass operation.
1.
Press
on the keyboard
2.
Press
or
on the keyboard until
3.
Press
on the keyboard
4.
Press
on the keyboard
All systems will transfer to bypass operation
Do not switch off any of the UPS systems until
point 5-8 has been carried out
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 (H004)
to position „1“
above the output isolator
(Q004) and the green lamps
(H002) above the output
switch handles (Q002) light
7.
Turn the output isolator (Q004) to position “0”
The green lamp (H002)
above the output isolator
light
8.
Turn all output switches (Q002) to position „0“
Only the lamp (H002) above
the output switch handles
(Q002) lights now
9.
Open the front door and press both the green
„ON“ and the red „OFF“ key simultaneously
in any of the systems
The acoustic alarm sounds for 30 secs.*
Repeat for (all) other system(s).
10. Turn all input switches (Q001) to position „0“
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
7.2
Operating the external service bypass switch for parallel
systems
DP300E
DP300E
Q003
Q001a
Q001b
Q002b
Q004
Q002a
Service Bypass Switch
Load
Mains
