Siemens UL 489 - Abbreviations and Glossary of Terms; Abbreviations List

28 – 1
28 Abbreviations
A Set current for ground fault protection
A
1/2
Output information
1/2
(mutual mechanical interlocking module)
AC Alternating current
AMP AMP Incorporated, Harrisburg
ANCE Association of Standardization and Certification
ANSI American National Standard Institute
AWG American Wire Gauge
B Set current for ground-fault protection
BSS Breaker Status Sensor
C Set current for ground-fault protection
CC Closing coil
COM15 Communication interface
COMM. Communication
CONNECT Connected position
CSA Canadian Standards Association
CUB - c-
CUB + c+
D Set current for ground-fault protection
DC Direct current
DIN German Engineering Standard
DISCON Disconnected position
E Set current for ground-fault protection
E
1/2
Input information
1/2
(mutual mechanical interlocking)
ED Duty cycle
ESD Electrostatic-sensitive device
EN European Standard
ETU Trip unit (electronic trip unit)
EXTEND. Extended (additional) protection function
F1 1st shunt trip
F2 2nd shunt trip
F3 Undervoltage release
F4 Undervoltage release with delay time
F5 Tripping coil
F7 Remote reset coil
G-alarm Ground-fault alarm
G-tripping Ground-fault tripping
I / O Input / Output module
I
2
t Delay time-current relationship based on formula I
2
t=constant
I
2
t
g
Delay time for ground-fault based on formula I
2
t
g
= constant