8 abbreviations, Abbreviations, 8abbreviations – Alpha Technologies Cordex CXCRF 48-300W User Manual
Page 50

0300072-J0 RevA
Page 46 of 46
8
ABBREVIATIONS
NOTE:
This table does not contain all standard abbreviations.
Abbreviation Symbol
Complete name
Explanation
Bonding
Connection with the common Ground
19’’
19 inches
Standardised dimension for shelves
A xx
Unit XX
BAT
BATtery
BT
Battery Test
C
Common (for NO & NC)
The common part from relay contact is floating
Comp@s
Communication with the MCU controller (hard- and
Software )
ETSI
European Telecommunications
Standards Institute
Fxx
Fuse or breaker XX
I/O
Input / Output
L & N
Life and Neutral
Related to the Mains
LVD
Low Voltage Disconnect
Protection against deep discharge of batteries
MCB
Magnetic Circuit Breaker
Disconnect device
MCU
Monitoring and Control Unit
The MCU allows communication with the system
NC
Normally Closed
Related to relay contacts
NO
Normally Open
Related to relay contacts
NTC
Negative Temperature Coefficient Specification of the component to measure a
temperature
PE
Protective Earth
Related to the Mains
PLC
Programmable Logic Controller
Function available with Comp@s asset license to
create a Boolean relation between inputs and outputs
PLD
Partial Load Disconnect
RFID
Radio Frequency Identification
RH
Relative Humidity
SELV
Safety Extra Low Voltage
Safety norm (max 60 Vdc)
U
Unit for measuring shelf height
1U = 44.45mm / 1.75 inch
Table 12: Abbreviations