B2342
Emax VF
33/66
Doc. No
Model
Apparatus
Scale
Page No
1SDH000909R0001
11.2. Abbreviations and notes
11.2.1. Abbrevations
Abbreviations
Meaning
YO
Opening coil
YC
Closing coil
BT030-USB
Power supply and bluetooth communication unit, ABB SACE - USB
CB
Circuit-Breaker (for example Emax)
Emax
Series of ABB SACE air circuit-breakers
HW
Hardware
In
Rated current of the Rating Plug installed in the circuit-breaker
PR120/K
Internal signalling unit of alarms and trips of the circuit-breaker
PR120/D-M
Communication module
PR120/DC
Key plug module
PR122/VF
Protection relay for CB Emax
PR030/B
ABB SACE power supply unit
Relay
also called “protection unit” or “protection release”
TC
Trip Coil (opening solenoid)
SW
Software
i-Test
"i-Test" button on the front of relay
Trip
CB opening, generated by the release
Vaux
Auxiliary power supply
11.2.2. Notes
A. Use the “Belden 3105A”- type two-wire cable for instance (not supplied by ABB SACE).
B. Use the “Belden 3106A”- type three-wire cable for instance (not supplied by ABB SACE).
C. The unit has a “backup-protection” function; if the first command to the opening solenoid does not open immediately the circuit-
breaker (TC partially fault), TRIP commands are repeatedly sent until the circuit-breaker opens (providing a Vaux is present) or the
current disappears (if self-power supplied). The “backup” condition can be signalled by configuring the unit relays; using the “YO
back” selection, it is possible to command the “opening coil(YO)” accessory as another opening device if TC does not work.