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★★
An appropriate disconnect device as short-circuit backup An appropriate disconnect device as short-circuit backup
protection should be provided in the building wiring installation.protection should be provided in the building wiring installation.
★★ For three-phase For three-phase equipment equipment connection to connection to an IT an IT power power system,system,
a four-pole device which disconnect all phase conductors anda four-pole device which disconnect all phase conductors and
the neutral conductor should be provided in the building wiringthe neutral conductor should be provided in the building wiring
installation.installation.
★★ This is This is permanently connpermanently connected equipected equipment , ment , it must it must be installedbe installed
by qualified maintenance personnel.by qualified maintenance personnel.
★★ Earth connection Earth connection essential before essential before connecting to connecting to the buthe buildingilding
wiring terminal.wiring terminal.
★★ High leakage current, Earth connection essential beforeHigh leakage current, Earth connection essential before
connection connection supplysupply..
1.4 Operation1.4 Operation
★★ Do not Do not disconnect the disconnect the mains cable on mains cable on the UPS the UPS system or system or thethe
building wiring terminals block during operations since thisbuilding wiring terminals block during operations since this
would cancel the protective earth of the UPS system and of allwould cancel the protective earth of the UPS system and of all
connected loads.connected loads.
★★ The UPS system features The UPS system features its own, internal current sourceits own, internal current source
(batteries). The UPS output terminals block may be electrically(batteries). The UPS output terminals block may be electrically
lived even if the UPS system is not connected to the buildinglived even if the UPS system is not connected to the building
wiring terminals block.wiring terminals block.
★★ In In order to order to fully disconnect fully disconnect the the UPS system, UPS system, first press first press the Othe OFFFF
button then disconnect the mains lead .button then disconnect the mains lead .
★★ Ensure that Ensure that no fluids no fluids or other or other foreign objects foreign objects can can enter the enter the UPSUPS
system.system.
1.5 Maintenance, servicing and 1.5 Maintenance, servicing and faultsfaults
★★
The UPThe UPS system S system operates with operates with hazardous voltages. hazardous voltages. RepairsRepairs
may be carried out only by qualified maintenance personnel.may be carried out only by qualified maintenance personnel.
★★
Caution - risk of electric shock. Even after the unit is Caution - risk of electric shock. Even after the unit is
disconnected from the mains power supply, components insidedisconnected from the mains power supply, components inside
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