Circuit Diagrams - Allen-Bradley 140G-R Installation Instructions Manual

13 Circuit diagrams

WARNING:
Carefully read note F on the circuit diagrams before installing the circuit-breaker.
OPERATING STATE SHOWN
The diagram illustrates the components in the following conditions:
- circuit-breaker open
- circuits de-energized
- releases not tripped
- motor operator with unloaded springs.
VERSIONS
Version without overcurrent release
The applications indicated in fi gure 42 cannot be provided with this version.
KEY

= Figure number of the diagram
* = See note indicated by the letter
K51 = LSIG-MM electronic release with the following protection functions:
- L overload protection with inverse long-time delay trip setting I1
- S short-circuit protection with inverse or defi nite short time-delay trip setting I2
- I short-circuit protection with instantaneous time-delay trip-setting I3
- G earth fault protection with inverse short time-delay trip-setting I4
M = Motor for loading the closing springs
Q = Circuit-breaker
AX/1...5 = Auxiliary contacts of the circuit-breaker
SC = Pushbutton or contact for closing the circuit-breaker
SO = Pushbutton or contact for opening the circuit-breaker
SO2 = Pushbutton or contact for opening the circuit-breaker with instantaneous trip
TI/L1 = Current transformer located on phase L1
TI/L2 = Current transformer located on phase L2
TI/L3 = Current transformer located on phase L3
TU = Isolation voltage transformer (see note O)
Uaux. = Auxiliary power supply voltage (see note F)
UI/L1 = Current transformer (Rogowski coil) located on phase L1
UI/L2 = Current transformer (Rogowski coil) located on phase L2
UI/L3 = Current transformer (Rogowski coil) located on phase L3
UI/N = Current transformer (Rogowski coil) located on neutral
W2 = Serial interface with the accessories of releases LSIG-MM (internal bus)
X1...X7 = Connectors for the circuit-breaker appications
XK1 = Connector for the power circuits of releases LSIG-MM.
XO = Connector for YO1 release
XR3...XR13 = Connectors for the auxiliary circuits of releases LSIG-MM.
XV = Delivery terminal box for the auxiliary circuits of the circuit-breaker
SNC = Shunt closing release
SNT = Shunt opening release
EL SNT = Overcurrent shunt opening release (trip coil)
UVR = Undervoltage release (see notes B and Q)
OUT MM = Contact providing MM protection status (Active / Not Active)
DESCRIPTION OF FIGURES
Fig.1 = Circuit of the motor for loading the closing springs.
Fig.2 = Circuit of shunt closing release.
Fig.4 = Shunt opening release.
Fig.6 = Instantaneous undervoltage release (see notes B and Q).
Fig.11 = Contact for electrical signalling of springs loaded.
Fig.13 = Contact for electrical signalling of circuit-breaker open due to tripping of the overcurrent release.
The circuit-breaker can only be closed after the reset pushbutton has been pressed, or after the coil has
been energized for electrical reset (if available)
Fig.22 = Auxiliary contacts of the circuit-breaker
Fig.42 = Auxiliary circuits of the LSIG-MM release (see note F).
NOTES
B) The undervoltage release is supplied for operation using a power supply branched on the supply side of the circuit-breaker or from an
independent source: the circuit-breaker can only close when the release is energized (there is a mechanical lock on closing).
If there is the same power supply for the closing and undervoltage releases and the circuit-breaker must close automatically when the
auxiliary voltage returns, a 30 ms delay must be introduced between the accept instant of the undervoltage release and energizing of
the closing release. This can be achieved by means of a circuit outside the circuit-breaker comprising a permanent closing contact, the
contact indicated in fi g. 12 and a time-delay relay.
F) The auxiliary voltage Vaux allows all the functions of LSIG-MM releases to be activated.
Since a Vaux isolated from earth is required, it is necessary to use "galvanically separated converters" conforming to standards
IEC 60950 (UL 60950) or equivalent, able to guarantee a common mode current or leakage current (see IEC 478/1, CEI 22/3) of no more
than 3.5mA, IEC 60364-41 and CEI 64-8.
Q) The second shunt opening release may be installed as an alternative to the undervoltage release.
U) The shield of the connection cable must be earthed on the circuit-breaker side only. The connection must be made with shielded two-wire
cable (the BELDEN 3105A type) no more than 15 meters in length.
Z) Short-circuit T5 and T6 if the outside neutral current sensor (UI/N) is not connected.
DIR 1000682R0002 Version 03
(32)