Operating instructions

Protect 5.31/xxx-480-220-120 10 kVA - 120 kVA
Page 32 of 56 8000020680 BAL, en
8 Operation
8.1 Disconnecting the UPS (Individual Unit)
ATTENTION:
Only switch off the UPS in an absolute emergency by switching
off the rectifier circuit and SBS circuit in their distribution! In
addition, the inverter must be switched off using the remote OFF
contact. The external battery isolator must be opened to
completely disconnect the unit from the power supply.
To restart the system, proceed as described in Chapter 7.
Proceed as described below to disconnect the UPS from the power
supply (see also Figure 3).
Step Action DOU
LED Display
1
Switch off the INV using the "∼0" button on the DOU and
confirm. The SBS circuit is automatically activated.
Green flashes
2 Switch off the REC using the "=0" button on the DOU and
confirm.
Green and yellow
flash
3* Q29 (internal option) to position "2" service mode.
Manual bypass is activated. The SBS is still connected to
mains voltage.
Manual bypass
symbol
4 Battery isolator (external) set to "OFF". Red, green and
yellow flash
5 Q1 to the "OFF" position. The REC circuit is switched off.
6 Q29 (internal option) to position "3" manual bypass.
SBS mains is switched off.
* Step only required when Q29 is installed
Table 5 Disconnecting the Protect
CAUTION:
Even if disconnected, the UPS can still be live due to charged
capacitors and connected remote signals.
Observe the safety instructions!