12 Appendix

12.1Technical terminology

Class D

See Device protection

 

DC/DC Booster

An electronic circuit that converts a source of direct current

 

 

(DC) from one voltage level to a higher voltage level

 

Device protection

Term used as part of surge protection concept

 

 

The conventional mains surge protection consists of

 

 

a lightning arrester (class B), surge arrester (class C)

 

 

and finally the so-called device protection (class D)

 

EBM

Extended Battery Module

 

IGBT

Insulated Gate Bipolar Transistor

 

 

High-efficiency transistors in state-of-the-art design with

 

 

simple gate-drive characteristics (MOSFET design) and

 

 

lowest losses in output (structure of a bipolar transistor)

 

LED

Light Emitting Diode

 

 

Electronic semiconductor component, used for visual

 

 

signaling

 

PFC

Power Factor Correction

 

 

Circuit technology used to minimize the harmonic current

 

 

(particularly important when connecting non-linear loads)

 

 

 

PWM

Pulse Width Modulation

EN

 

Here: Circuit technology to generate a sine-like flux

 

 

density waveform of highest quality from existing direct-

 

 

current voltage

 

SNMP

Simple Network Management Protocol

 

 

 

Frequently used protocol in the network to manage /

 

 

administrate components

 

VFD

Output Voltage and Frequency Dependent from mains

 

 

supply. The UPS output is dependant on mains voltage

 

 

and frequency fluctuations.

 

 

Formerly known as: OFFLINE

 

VI

Output Voltage Independent from mains supply

 

 

The UPS output is dependant on mains frequency

 

 

fluctuations, but the mains voltage is prepared by

 

 

electronic / passive voltage regulation devices.

 

 

Formerly known as: LINE INTERACTIVE

 

VFI

Output Voltage and Frequency Independent from mains

 

 

supply. The UPS output is independent on mains voltage

 

 

and frequency fluctuations. Formerly known as: ONLINE

 

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