MGE UPS Systems 4000 RT user manual Glossary

8. Appendices

8.2 Glossary

Backup time	Time that the connected equipments can operate on battery power.
Bypass AC source	Source supplying the bypass line. The equipments can be transferred to the bypass line if an
	overload occurs on the UPS output, for maintenance or in the event of a malfunction.
ECO mode	Operating mode by which the equipments are supplied directly by the AC source if it is within the
	tolerances defined by the user. This mode reduces the consumption of electrical power.
Equipments	Devices or systems connected to the UPS output.
Frequency converter	Operating mode used to convert the AC-power frequency between the UPS input and output
	(50 Hz -> 60 Hz or 60 Hz -> 50 Hz).
Low-battery warning	This is a battery-voltage level indicating that battery power is low and that the user must take
	action in light of the imminent break in the supply of power to the load.
Manual bypass	Rotary switch controlled by the user, used to connect the equipments directly to the AC source.
	Transfer of the equipments to the manual bypass enables UPS maintenance without interrupting
	the supply of power to the connected equipments.
Normal AC source	Normal source of power for the UPS.
Normal (double	The normal UPS operating mode in which the AC source supplies the UPS which in turn supplies
conversion) mode	the connected equipments (after electronic double conversion).
Personalisation	It is possible to modify certain UPS parameters set in the factory. Certain UPS functions can also
	be modified by the MGE UPS SYSTEMS power management products to better suit user needs.
Programmable	These outlets can be automatically shut down during operation on battery power (shutdown time
outlets	delays can be programmed with the MGE UPS SYSTEMS power management products). The
	UPS has two sets of two programmable outlets.
Relay contacts	Contacts supplying information to the user in forme of signals.
UPS	Uninterruptible Power System.

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