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9.2.3
External Cublicle
BUS
modules
9.2.3.1 General
Application
External
c
modules are used for communication between the WL circuit breaker and the secondary equipment in the circuit
breaker panel. They are provided to control analog indications, transmit the circuit breaker tripping status and the reason for tripping
and to read additional control signals. Furthermore, with one of these modules it is possible to implement a zone selective interlocking for
short-circuit protection.
(1)
Indicator LED
(2)
Rotary coding switch
(3)
Connection X3:
c
(4)
Connection X5: inputs or outputs
(5)
Connection X4: inputs or outputs
(6)
Connection X2:
c
(7)
Connection X1:
c
(8)
"TEST" button
Installation
The external
c
modules are snapped onto a standard 35-mm DIN rail inside the switchgear panel. It must be ensured that the
length of the connecting cable of the first module to the circuit breaker does not exceed 6.5 ft.
Connection setup
The
c
modules must only be connected to each other and to the circuit breaker using the pre-assembled cables supplied.
These cables are also used for the 24 V DC voltage supply of the
c
modules.
If more than two
c
modules are connected, the 24 V DC voltage supply must be fed via a separate cable from module to module.
Only one
c
module can be connected directly to a circuit breaker. Further modules must be connected from module to module.
Radial cables are not permissible.
If provided, the ZSI module is always the first module, and must be connected directly to the circuit breaker.
The
c
cable must be connected to the X3 connection of the last module with a 120
0.5 W resistor.
The total length of the
c
cables must not exceed 30 ft from auxiliary current plug X8 of the circuit breaker to the last
c
module.
c
connections at module:
X3-1 = Ground 24V DC
X3-2 = CubicleBUS -
X3-3 = Cubi
X3-4 = +24V DC
c
connections at breaker:
X8-1 = CubicleBUS -
X8-2 = Cubi
X8-3 = +24V DC
X8-4 = Ground 24V DC
Summary of Contents for UL 489
Page 36: ...5 21 Frame size II 3000 A Frame size III 1 Holes 14 mm 0720 1 0721_nu ...
Page 63: ...7 2 Horizontal connectors 0733_nu top view ...
Page 64: ...7 3 Rear vertical connectors 0734_nu top view rear view ...
Page 65: ...7 4 Front connectors 0736_nu front view top view ...
Page 66: ...7 5 Front connectors and pressure wire terminals 0737_nu top view front view ...
Page 67: ...7 6 7 2 Frame size II fixed mounted version 0494 3_nu ...
Page 68: ...7 7 Class C always 0494 5_nu top view rear view ...
Page 69: ...7 8 2500 0738_nu LH side view front view ...
Page 71: ...7 10 7 4 Frame size III fixed mounted version 0495 1_nu LH side view ...
Page 72: ...7 11 0495 2_nu top view top view ...
Page 73: ...7 12 0495 3_nu top view rear view ...
Page 75: ...7 14 7 5 Door cut outs fixed mounted circuit breaker Frame size I 0735_nu ...
Page 76: ...7 15 Frame size II III 0496_nu ...
Page 77: ...7 16 7 6 Frame size I draw out version 0745_nu ...
Page 78: ...7 17 0746_nu rear view top view ...
Page 79: ...7 18 0747_nu bottom view ...
Page 80: ...7 19 0748_nu ...
Page 81: ...7 20 0749_nu ...
Page 82: ...7 21 7 7 Frame size II draw out version 0490 1_ul ...
Page 86: ...7 25 7 8 Frame size III draw out version ...
Page 87: ...7 26 ...
Page 88: ...7 27 ...
Page 89: ...7 28 7 9 Door cut outs for draw out circuit breakers Frame size I 0750_nu ...
Page 91: ...7 30 7 11 External sensor for neutral conductor WLNCT2 ...
Page 92: ...7 31 WLNCT3 ...
Page 107: ...9 5 I tripping Ground fault tripping ...
Page 351: ......