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11.
Notes:
1.Testbus S
Compatibility with PR010/T S
Dual setting S
PR120/V Measuring (internal voltages module) <2> (2>
PR120/LV Measuring (internal voltages module) <2> (2>
PR120/K Signalling (internal signalling module) O
PR120/D-M Com (internal communication module) O
PR120/DC (override protection module) S
PR021/K (separate signalling unit) O
HMI030 (separate graphics interface) O
PR030/B (separate power supply unit) S
BT030 (separate Bluetooth communication unit) O
Key:
S standard function/unit,
O optional function/unit,
- function/unit unavailable.Na 1SDH000635R0002
Page No.
F tio PR122/DC PR123/DC
Current protections (L, S
Current protections S
Additional protections (U) S
Voltage protections (UV, OV, RP) S
Other protections (S2) S
Temperature protection (OT) S
MCR protection S
Thermal memory S
Local bus for separate auxiliary units S
Wire communication (RS485) S
Data Logger S
Compatibility with SD.Pocket S
Compatibility with SD. PR120/V PR120/LV for standard (see section 14.
Every operational requirement now met thanks the different performance levels the new relays and the additional odules that can
be fitted inside them (PR120/V, PR120/LV, PR120/K, PR120/D-M, PR120/D-BT).1)
Model L3447
A pparatus Emax DC
S cale
D oc.
A table can best illustrate the technical features and the mix and atchability the relays. with internal PR120/D-BT module
2. Protection releases General notes
The Emax series ABB air circuit-breakers now has new range electronic releases for applications called PR122/DC and PR123/DC.
28/108
.
The new protection releases integrate all the functions their predecessors, adding new and interesting technical features that are useful for
satisfying every current and future system installation need
