L2234
L2778
Emax
30/158
Doc. No.
Model
Apparatus
Scale
Page No.
1SDH000460R0002
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.
11.1 Safety notes
WARNING: this symbol gives information about operations, actions or circumstances that can cause injuries to the personnel, damage
to the unit or economic losses.
Read this manual carefully and completely.
The use of this device should be reserved for qualified and expert personnel only.
If in doubt, about its safe usage, the unit must be put out of service to prevent any accidental use.
You must assume that safe usage is impossible if:
1. the unit shows visible signs of damage.
2. the unit does not function (for example with autotest or with the trip test unit).
3. the unit has been damaged in transit.
Prior to servicing and/or replacing, the circuit-breaker must be open.
Also remember to disconnect all power supplies connected.
11.1.1 Notes for dielectric stiffness tests
Dielectric stiffness tests on the releases, inputs and outputs, are not permitted.
11.2 Abbreviations and notes
11.2.1 Abbreviations
Abbreviations Meaning
BA Opening coil
BC Closing coil
CB Circuit-Breaker (for example Emax)
BT030 Power supply and Wireless communication unit, ABB SACE
CS Current Sensor (current transformer)
PDA Pocket Pc with Bluetooth
Emax Series of ABB SACE air circuit-breakers
HMI030 Human Machine Interface
HW Hardware
In Rated current of the Rating Plug installed in the circuit-breaker
MT Thermal memory
Pn Circuit-breaker rated power
Pn
phase
Phase rated power
PR120/K Internal signalling unit of alarms and trips of the circuit-breaker
PR120/V Measuring module
PR021/K Signalling unit
PR120/D-M Communication module
PR120/D-BT Wireless communication module
PR010/T ABB SACE unit test
PR121/P Protection relay for CB Emax
PR122/P Protection relay for CB Emax
PR123/P Protection relay for CB Emax
PR030/B ABB SACE power supply unit
Relay also called “protection unit” or “protection release”
RMS Root mean square value
TC Trip Coil (opening solenoid)
SdZ Zone selectivity
SGR External toroid
SW Software
i-Test "i-Test" button on the front of relay
Trip CB opening, generated by the release
VT Voltage transformer (see also VS)
Un Rated voltage of the voltage transformers installed (phase voltage)
Vaux Auxiliary power supply
VS Voltage Sensor (see also VT)
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