REF 542plus switchbay protection and control unit
Manual Part 3: Installation and Commissioning
1VTA100004-en DMS,2001-10-04 REF542plus: Installation and Commissioning 7 / 80
2 Abbreviations and Definitions
In the following abbreviations and definitions used in this manual are listed together.
2.1 Abbreviations
AIS Air Isolated Switchgear
AR Auto Reclosure
CT Current Transformer
DFT Discrete Fourier Transformation
EMC Electro Magnetic Compatibility
FUPLA FUnktionblock Programming LAnguage also used as abbreviation for
function plan or chart
GIS Gas Isolated Switchgear
HMI Human Machine Interface as control unit
LCD Liquid Crystal Display
LED Light Emitting Diode
LAG Lon Application Guide
LV Low Voltage
MC Micro Controller
PC Personal Computer
RHMI Remote Human Machine Interface, the same meaning as HMI
VDEW Association of German Utilities
2.2 Definitions
Notes and warnings on hazards are at the beginning of every section and also in the
text. They are in a different font to distinguish them from normal text.
The safety warnings must be observed in all circumstances. If they are not observed,
no guarantee claims will be accepted.
Note
A note indicates items that are significant in the specific context. A note may contain
information on the interplay of various software components and appears as shown
below.
Example:
Note Please read this section completely for information on the various formats for safety
notes.
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