Type VXE Electronic Control
The VXE electronic control utilizes solid-state circuitry
and provides the intelligence for current sensing, trip tim-
ing, and all other control functions. The control has an
external weatherproof cabinet connected to the recloser
with a control cable.
No external power source is required to operate the VXE
control. Power is obtained from the line by means of a
bushing current transformer. The separate control cabinet
is intended to be mounted to the recloser tank, although
it can be mounted to the pole or other mounting structure
at a distance approximately equal to the cable length.
The maximum control cable length is 30 m (100 ft).
Current Sensing
VXE reclosers have a 1000:1-ratio-sensing current trans-
former, mounted on the load-side bushing under the
head, which provides phase current sensing. The CT is
connected to the electronic control cabinet through the
control cable. A solid-state CT protector is connected to
the current transformer inside the recloser, ahead of the
cable disconnect, to allow for removing the control while
the recloser is in service.
Control Power
Control power for the electronic circuitry is supplied by the
sensing CT located in the recloser when a minimum of 3
A of line current is flowing through the recloser. A green
LED on the circuit board will light when the control is pow-
ered by line current (20-second delay for LED to light).
A minimum of 3 A of primary current is sufficient to power
the electronics and charge the trip capacitors, which
actuate the low-energy opening actuator. In addition, a
control battery is required to supply power to the control
during the reclose intevals. If line current drops below 3 A
or the recloser is in the open position, power is then sup-
plied by the control battery.
Control Batteries
The VXE control requires a 9 V, 1.4 Ah lithium battery to
supply power when line current is not present. The bat-
tery is required to close the recloser after a trip operation,
during a normal trip sequence, and to eliminate arming
time. Arm time is the time self-powered controls require
to charge the power supply, before the control can issue
a trip signal. This is noted for instances of a dead battery.
In spite of a dead battery, the fault current will arm the
control and trip the recloser open.
The VXE control requires a second 9 V, 1.4 Ah lithium
battery to operate the lockout indicator. The battery is
required to supply the current needed by the trip and
close coil of the lockout indicator.
S280-16-1
7
!
SAFETY
FOR LIFE
CONTROL PROGRAMMING AND OPERATION
Figure 4.
Type VXE electronic recloser control.
020096KM
020086KM
Control Battery
Control Cable
Receptacle
Programming DIP
Switches
Time–Current Curve
Plug-in Cards
Control Lockout
Indicator
Control Battery
Plug
IMPORTANT:
The control and lockout indicator bat-
teries should be disconnected from the control and
lockout indicator circuit boards whenever the control is
not in service.
CAUTION:
Fire. Explosion. Leakage. Severe
burn hazard. Do not recharge or disassemble bat-
tery. Battery should not be exposed to temperatures
above 175°F. Do not incinerate or expose the battery
contents to water. Failure to comply can result in equip-
ment damage and serious personal injury.
T251.0
!
AC Power LED
Indicator
Lockout Indicator
Battery
