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5-6kVA EU_EN
ENGLISH
10. Glossary
Bypass AC source Source supplying the bypass line. The equipment can be transferred to the by-
pass line if an overload occurs on the UPS output, for maintenance or in  
the event of a malfunction.
Frequency converter Operating mode used to convert the AC-power frequency between the UPS input 
and output (50Hz -> 60Hz or 60Hz -> 50Hz).
Low-battery warning  This is a battery-voltage level indicating that battery power is low and that  
the user must take action to prevent the imminent break in the supply of power 
to the load.
Backup time    Time during which the load can be supplied by the UPS operating on battery 
power.
Load   Devices or equipment connected to the UPS output.
HE mode   Operating mode by which the load is supplied directly by the AC source if it is 
within the tolerances dened by the user. This mode reduces the consumption  
of electrical power
Manual bypass   Rotary switch controlled by the user, used to connect the loads directly to the 
AC source. Transfer of the load to the manual bypass enables UPS maintenance 
without interrupting the supply of power to the connected loads.
Normal (double  The normal UPS operating mode in which the AC source supplies the UPS which 
conversion) mode  in turn supplies the connected loads (after electronic double conversion).
Normal AC source Normal source of power for the UPS.
Relay contacts   Contacts supplying information to the user in the form of signals.
UPS   Uninterruptible Power Supply.