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12. SACE PR122/VF Release - Identification
The configurations avaiable for PR122/VF including standard protection functions as well as optional modules, are illustrated in the
following figure:
12.1. General
12.1.1. Main Features
The PR122/VF is a high-performance protection unit offering Protection, Measurement, Data storage, Communication (optional),
Self-test and Load control functions for ABB SACE 'Emax' low-voltage air circuit-breakers, for application at variable frequency.
The PR122/VF unit installed on CB is connected to current sensor resistor for reading of primary current signals, and to Trip Coil for
the management of CB Opening commands.
Depending on the protections settings, the unit manages timing and commands to open CB.
All the settings and protection setups are accessible to user through a menu on the display, or by using external communication software.
The protections available for the PR122/VF are:
Symbol
Protection type
L
Overload with inverse long time delay
I
Instantaneous short-circuit
OT
Temperature out of range
By connecting Accessory units, it is possible to expand the performance information management, signals and commands:
- with module PR120/D-M it is possible to start remote communication with the unit and to command mechanical accessories as Yo
and YC.
- with module PR120/K it is possibile to use external contacts associated to the CB events or status.
- with external unit BT030-USB or Ekip T&P it's possible to start temporary communication for settings, test, and information collection.
The unit must be supplied by Auxiliary external voltage (AUX) in order to work.
12.1.2. Standard Reference
The PR122/VF has been designed to work in accordance with the international standard:
IEC 60947-2 Low voltage apparatus. Circuit-breakers.
12.1.3. Operation condition
For correct operation of the unit, the following conditions must be fulfilled:
12.1.3.1. Environmental condition
The PR122/VF unit is provided with an internal temperature check sensor: in case of temperature out of range, a warning/alarm condi-
tion will be shown on the display and signaled by LEDs
Operating temperature
Storage temperature
Relative humidity
Degree of protection (with PR122/VF installed in the CB)
B2342
Model
L
I
MODULES AVAILABLE
PR120/D-M
PR120/K
PR120/DC
PR030B
BT030-USB
EKIP T&P
-25°C... +70°C
-40°C ... +90°C
0% ... 98% with condensation
IP 30
Apparatus
Doc. no.
OT
STANDARD
OPTIONAL
X
X
X
X
X
X
Emax VF
1SDH000909R0001
Scale
Page No
34/66
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