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.
E) For the EIA RS485 serial interface connection see document RH0298 regarding MODBUS communication. Second set circuit-breaker auxiliary contacts (not available for PR122/P and PR123/P releases)(see note V)
Fig.
150/158
. Third set supplementary auxiliary contacts outside the circuit-breaker.X7 Connectors for the accessories the circuit-breaker
XF Delivery terminal box for the position contacts the withdrawable circuit-breaker (located the fixed part the circuit-breaker)
XK1 Connector for power circuits PR121/P, PR122/P and PR123/P releases
XK2 XK3 Connectors for auxiliary circuits PR121/P, PR122/P and PR123/P releases
XK4 Connector signal open/close
XK5 PR120V module connector
XO Connector for YO1 release
XV Delivery terminal box for the auxiliary circuits the fixed circuit-breaker
YC Shunt closing release
YO Shunt opening release
YO1 Overcurrent shunt opening release (trip coil)
YO2 Second shunt opening release (see note Q)
YR Coil electrically reset the circuit-breaker
YU Undervoltage release (see notes and Q)
D rip tio fig s
Fig.
Fig. Contact for electrical signalling springs loaded.
Fig. and time-delay relay. Circuits the measuring module PR120/V the PR122/P and PR123/P releases internally connected the three-pole and four-
pole circuit-breaker (optional for the release PR122/P) (see note U).
Fig. Circuits the communication module PR120/D-M the PR122/P and PR123/P releases (optional) (see note E). Consult this catalogue for information
on how make out order.
Fig. No. The circuit-breaker can only close when the release energized (there mechanical lock closing).
Fig. Instantaneous undervoltage release (see notes and Q). First set circuit-breaker auxiliary contacts.
If the same power supply used for the closing and undervoltage releases and the circuit-breaker required close automatically when
the auxiliary power supply comes back on, delay must introduced between the undervoltage release accept signal and the
energizing the closing release.
Fig. The circuit-
breaker may closed only after pressing the reset pushbutton energizing the coil. The circuit-breaker may closed
only after pressing the reset pushbutton. Contact for electrical signalling undervoltage release energized (see notes and S). Auxiliary circuits PR121/P release (see note F).
Fig. Auxiliary circuits PR122/P and PR123/P releases (see notes and V).
Fig.
Fig.
Fig.
Fig. Second shunt opening release (see note Q). Circuits the measuring module PR120/V the PR122/P and PR123/P releases connected inside the three-pole circuit-breaker
with outside neutral conductor (optional for the release PR122/P)(see note U). This may achieved using external circuit comprising permanent make contact, the contact shown
in fig.
Fig.
Fig.
Fig. Circuits the indicator module PR120/K the PR122/P and PR123/P releases connection (optional) (see note ). Undervoltage release with electronic time-delay device, outside the circuit-breaker (see notes and Q)
Fig.
Fig. First set contacts for electrical signalling circuit-breaker connected, test isolated, disconnectedposition. Contact for electrical signalling circuit-breaker open due tripping the overcurrent release.
Fig. Contact for electrical signalling circuit-breaker open due tripping the overcurrent release and electrical reset coil. Second set contacts for electrical signalling circuit-breaker connected, test isolated, disconnected position.
Fig.
Fig. SACE SOR TEST UNIT Test/monitoring Unit (see note R)
Fig. Circuits the indicator module PR120/K the PR122/P and PR123/P releases connection (optional) (see note V). Shunt opening release.
B) The undervoltage release supplied for operation using power supply branched the supply side the circuit-breaker from an
independent source.
Model L2234 Apparatus Scale
L2778
Doc.TI/L3 Current transformer located phase L3
TO Homopolar toroidal current transformer (see note W)
Vaux Auxiliary power supply voltage (see note F)
UI/L1 Current sensor (Rogowski coil) located phase L1
UI/L2 Current sensor (Rogowski coil) located phase L2
UI/L3 Current sensor (Rogowski coil) located phase L3
UI/N Current sensor (Rogowski coil) located neutral
UI/0 Current sensor (Rogowski coil) located the conductor connecting earth the star point the MV/LV transformer (see note G)
W1 Serial interface with control system (external bus): EIA RS485 interface (see note E)
W2 Serial interface with the accessories PR121/P, PR122/P and PR123/P releases (internal bus)
X Delivery connector for auxiliary circuits withdrawable version circuit-breaker
X1.
Fig. Circuits the signalling unit PR021/K (outside the circuit-breaker).
Fig..
In tib ilitie s
The circuits indicated the following figures cannot supplied simultaneously the same circuit-breaker:
6 8
13 14
22 47
43 48
N s
A) The circuit-breaker only fitted with the accessories specified the ABB SACE order acknowledgement. Circuit shunt closing release. 2
Page No. Circuits the measuring module PR120/V the PR122/P and PR123/P releases externally connected the circuit-breaker (optional
for the release PR122/P) (see note and X). Motor circuit load the closing springs.
Fig
