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The protection unit self-supplied current sensors and primary voltages via the PR120/V module.
Model 2234 Apparatus Scale
L2778
Doc. No.
The unit opens the circuit-breaker which installed means the TC, which takes effect directly the device'smechanical leverism. The unit's
user interface also enables parameter setup and completes the prealarm and alarm management for the protection and watchdog functions.
1 4.SACE PR123/P Release Identification
The PR123/P units available, accordance with the IEC standards, together with the various protections and the various standard and optional
modules, are illustrated the following figure:
Note (1): See par. Circuit-breakers.
The protections available are:
S bol Protection against
L overload with inverse long time delay
S, short-circuit with adjustable delay
D directional short-circuit with adjustable delay
I instantaneous short-circuit
G earth fault with adjustable delay
U phase current unbalance
OT temperature out range
UV undervoltage
OV overvoltage
RV residual voltage
RP reverse active power
UF underfrequency
OF overfrequency
M closing short-circuit
The PR123/P can installed 3-pole CBs with and without external neutral, 4-pole CBs.6
PR123/P PR123/P
Protections
BSD DODOFor all versions ^
Optional modules available
PR120/D-M COM________________________
PR120/K SIGNALLING
PR120/D-BT WL-COM
BT030
Rc(1)
14.1 rd
The PR123/P has been designed work accordance with the international standard:
IEC 60947-2 voltage apparatus. 2
Page No.
It should noted that the reference current for the PR123/P the (the rated current defined the front RatingPlug) and not the (the
uninterrupted rated current the itself).
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1 l
The PR123/P high-performance self-supplied protection unit with Protection, easurem ent, Data storage, Com unication (optional), Self
test, Load control and Zone selectivity functions for the ABB SACE 'Emax' range and 4-pole low-voltage air circuit-breakers.
Example: the E1B800 with 400A Rating Plug has 800A and 400A.
The unit made using digital microprocessor technology and interfaces with the user means graphic display and keyboard
