AEG 10000 Manual Do Utilizador

58 

Appliance protection 

Surge technology term  
The conventional mains surge protection 
consists of an mains earthwire (class B), an 
overvoltage protection (class C) and an 
appliance protection (class D) – see also 
e.g. under http://www.phoenixcontact.de  
(topic „TRABTECH“) 

Class D 

see appliance protection 

DC/DC Booster 

Circuit technology to boost the direct current 
on a higher voltage level 

IGBT Insulated Gate Bipolar Transistor 

The latest design of high-performance 
transistors with minimum control power 
requirement  (MOSFET structure) and 
minimum losses on the output side 
(structure of a bipolar transistor) 

LED Light Emitting Diode 

Electronic semiconductor component, commonly 
called light diode. Used for optical signalling. 

PFC Power Factor Correction 

Circuit technology to minimize circuit backfeed 
(important for non linear loads) 

PWM Pulse Width Modulation 

Here: Circuit technology for generating a 
sinusoidal voltage of the highest quality from 
an existing DC voltage 

SNMP 

Simple Network Management Protocol 
common protocol in networks to manage / 
control appliances 

VFD Output 

Voltage and Frequency Dependent 

from mains supply. The UPS output depends 
of mains voltage and frequency variations. 
Former notation: OFFLINE 

VI Output 

Voltage Independent from mains 

supply. The UPS output is independent of 
mains voltage and frequency variations. The 
mains voltage however is rectified by 
electronic / passive voltage regulators. Former 
notation: LINE-INTERACTIVE 

VFI Output 

Voltage and Frequency Independent 

from mains supply. The UPS output is 
independent of mains voltage and frequency 
variations. Former notation: ONLINE