80
EN
12.1 DEFINITIONS OF TECHNICAL TERMS
DC/DC booster Switching technology for increasing a DC voltage to
a higher voltage level
Device protection Term from the field of overvoltage technology
Conventional mains overvoltage protection consists
of a lightning arrester (class B), overvoltage protection
(class C), and what is referred to as the device
protection (class D)
IGBT
Insulated Gate Bipolar Transistor
High-performance, state-of-the-art transistors with
an ultra-low control power requirement (MOSFET
structure) and ultra-low losses on the output side
(structure of a bipolar transistor)
Class D
See device protection
LED
Light Emitting Diode
Electronic semiconductor component used for optical
signaling
PFC
Power Factor Correction
Switching technology for minimizing circuit feedback
(especially important when connecting non-linear loads
PWM
Pulse-Width Modulation
In this case: switching technology for generating a
maximum-quality sinusoidal voltage from an existing
DC voltage
SNMP
Simple Network Management Protocol
Common protocol in the network for managing
components
VFD
Output Voltage and Frequency Dependent from
mains supply. The UPS output is dependent on mains
voltage and frequency fluctuations. Previously called:
OFFLINE
12. ANNEX
Summary of Contents for Protect NAS
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