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10 User Guide Silcon DP300E Series 480V 400-500kVA
7OA0004 US rev. 02
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.
2.7.1 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 switch
(Q004) and the green lamps
(H002) above the output
switch handles (Q002) light
7. Turn the output switch (Q004) to position “0” H003 turn off
H002 & H004 still lights
8. Turn all output switches (Q002) to position “0“ H002 & H004 still lights
9. Open the front door and press the red “OFF”
push-button in any of the systems.
The acoustic alarm sounds for 30 secs.*
Repeat for (all) other system(s)
2.7 Operating the external service bypass switch, parallel
systems
DP300E
DP300E
Q010a
Q001a
Q002a
Q004
Q010b
Q001b Q002b
Utility 1
Q003
Service bypass switch
H003
Load
Utility 2
H004
H002b
H002a
H010a
H010b
Single Utility
Dual Utility
Display shows
Display shows
Lamp indication
on bypass panel
Stop, Start & Operating the External Service Bypass Panel
Bypass operation
: NO
Bypass operation
: YES
Bypass operation
**System OFF**
DP300E
DP300E
Q003
Service
bypass
switch
H003
Q001a
Q001b
Q002b
Q004
Q002a
LoadUtility
H004
H002aH002b