Under Voltage Trip Device, [Uvt]; Specionation Of Remote Control Cables Minumum Gauge; Uvt Assembly Position And Wiring Diagram; Latch Checking Switch (Lcs) - WEG VBWC Serie Instrucciones De Instalación

8.1 UNDER VOLTAGE TRIP DEVICE, [UVT]

„ UVT coil trip the VCB when the voltage is lower than 0.6x Nominal Voltage;
UVT coil is instantaneous. The UVT time delay controller is able to adjust the delay tripping up to 3s.
„ The operation of the VCB is not possible mechanically or electrically if the voltage of UVT coil is smaller than
the voltage range showed in the tabel below. UVT coil connection is by terminals D1 and D2
Rated voltage (Vn)
DC (V) AC (V)
24~30 -
48~60 48
100~130 100~130
200~250 200~250

8.1.1 Specionation of Remote Control Cables minumum gauge

Refer to the below table regarding the length of wire when using trip coil with 24~30 [V] or 48~60 [V] of rate voltage
as power consumption due to inrush current is about 200 VA for coil operation. Coil can be non-operating in case
of not corresponding with the wire specification listed below:
Wire type
100%
Operating Voltage
85%

8.1.2 UVT assembly position and wiring diagram.

8.2 LATCH CHECKING SWITCH (LCS)

„ LCS indicating the state whether the closing operation is available or not;
„ Output "b" contact can be generated at OFF & Charge status. And this condition means it's ready for
closing operation.
*When the Latch is in abnormal position, this LCS prevents the closing operation even though there is a 'Closing' operation signal if you
connect LCS to the Closing coil in series.
Operating voltage range (V)
Pick up Drop out
0.65~0.85 Vn 0.4~0.6 Vn
Table 8.2: UVT Coil Characteristics
DC 24~30 (V)
#14 AWG (2,08 mm ) #16 AWG (1.31 mm
2
48,5 m
13,4 m
Table 8.3: Cable Control Minumum Gauges
Figure 8.3: UVT Coil
Figure 8.4: Latch Checking Switch
Power consumption (VA or W)
Inrush
200
Rated voltage (Vn)
) #14 AWG (2.08 mm
2
30,5 m 233,2 m
8,8 62,5 m
UVT Coil
www.weg.net
Trip time (ms)
Steady-state
5 ≤50 m/s
DC/AC 48 (V)
) #16 AWG (1.31 mm
2
143,9 m
39,3 m
Vacuum Circuit Breaker | 15
)
2