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6 User Guide Silcon DP300E Series 480V 400-500kVA
7OA0004 US rev. 02
1. Prepare the system by opening the front door(s).
2. Continue with the next point (3) and observe that this next step will interrupt the
system output voltage!!!
Display shows
3. Press the red “OFF“ push-button.
The red alarm LED below the display lights.
The acoustic alarm sounds for 30 sec.*
4. Switch off the utility power supply.
The red alarm LED below the display lights.
The acoustic alarm sounds for 30 sec.
5. Switch off battery MCCB’s in MCCB box
or battery cubicle.
Please refer to LED indication and labelling in
MCCB box or battery cubicle.
6. Switch off utility power by opening Q001 and
Q010, if dual utility.
7. The acoustic alarm sounds shortly.
The UPS is now isolated. Maintenance/repair work can
take place or the UPS can be disconnected and removed.
* The acoustic alarm can be reset by the
key.
2.4 Stop (for complete power down)
2.4.1 Switching off Silcon DP3400E – DP3500E
Stop, Start & Operating the External Service Bypass Panel
** System OFF **
** System OFF **
Blank
WARNING:
If the UPS system has a service
bypass panel, and if load
equipment must remain
ernergized from the utility, refer
to operation service bypass
before proceeding.
WARNING:
This UPS system contains a
special design feature, which
guarantees output voltage in
the form of bypass operation.
This function comes into
operation in case of failure in
internal power supply or in
controller circuit.
Even if the UPS system is
assumed to be switched off,
there may be voltage at the
UPS output because of the
special bypass feature.
Switching off by pressing the
red “OFF”-button.
TEST BEFORE TOUCHING!
WARNING:
Batteries out of service could
be damaged if not recharged
every third month.
WARNING:
Internal DC-capacitor may
contain energy even after the
UPS has been switched off.
On account of the automatic
discharging, wait at least 5
minutes after the UPS and
MCCB’s have been switched off
before working on the UPS
system.