Poznámky redaktora
Fig.
Fig.
Fig. Second set circuit-breaker auxiliary contacts (not available for PR122/P and PR123/P releases)(see note V)
Fig. Circuits the indicator module PR120/K the PR122/P and PR123/P releases connection (optional) (see note ).
Fig. 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)..
B) The undervoltage release supplied for operation using power supply branched the supply side the circuit-breaker from an
independent source.
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. Motor circuit load the closing springs.. Circuits the signalling unit PR021/K (outside the circuit-breaker). Auxiliary circuits PR122/P and PR123/P releases (see notes and V). Circuits the indicator module PR120/K the PR122/P and PR123/P releases connection (optional) (see note V).
Fig.
Fig. First set circuit-breaker auxiliary contacts.
Fig. Second set contacts for electrical signalling circuit-breaker connected,test isolated,disconnected position. 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). Instantaneous undervoltage release (see notes and Q).
Fig.
Fig.
Fig.
Fig. The circuit-breaker can only close when the release energized (there mechanical lock closing). The circuit-breaker may closed
only after pressing the reset pushbutton. Third set supplementary auxiliary contacts outside the circuit-breaker. SACE SOR TEST UNIT Test/monitoring Unit (see note R)
Fig. The circuit-
breaker may closed only after pressing the reset pushbutton energizing the coil. Consult this catalogue for information
on how make out order.
Fig.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. Circuit shunt closing release.
Fig.
E) For the EIA RS485 serial interface connection see document RH0298 regarding MODBUS communication. Circuits the communication module PR120/D-M the PR122/P and PR123/P releases (optional) (see note E).
Fig.
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.
Model L2234 Apparatus Scale
L 2778
D 1SDH000461R0002
Page N°
17/25
. Contact for electrical signalling springs loaded.
Fig.
Fig. Contact for electrical signalling undervoltage release energized(see notes and S). Circuits the measuring module PR120/V the PR122/P and PR123/P releases internallyconnected tothe three-pole and four-
pole circuit-breaker (optional for the release PR122/P) (see note U). First set contacts for electrical signalling circuit-breaker connected, test isolated, disconnected position.
Fig. Contact for electrical signalling circuit-breaker open due tripping the overcurrent release and electrical reset coil. Undervoltage release with electronic time-delay device, outside thecircuit-breaker (see notes and Q)
Fig. This may achieved using external circuit comprising permanent make contact, the contact shown
in fig.
Fig.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/O 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. Contact for electrical signalling circuit-breaker open due tripping the overcurrent release. Second shunt opening release (see note Q). Auxiliary circuits PR121/P release (see note F). and time-delay relay.
Fig. Shunt opening release.
Fig.
Fig
