Auxiliary-Powered Interface
The Type NOVA recloser mechanism with the auxiliary-
powered interface is fully operational with standard Cooper
Power Systems FXB, Form 4C, Form 4D, Form 5, and
Form 6 microprocessor-based controls and standard 14-pin
control cables. It is not compatible with the Type F3A control.
The auxiliary-powered interface includes both a 2-pin and
a 14-pin receptacle on the recloser. Internal heaters (for
humidity control) are also included.
The Type NOVA recloser mechanism with the auxiliary-
powered interface is compatible with 120 VAC, 240 VAC,
125 VDC, or 250 VDC as configured at the time of order.
The auxiliary input power supply (AC or DC) is connected
to a 2-pin male receptacle located next to the 14-pin
female control receptacle. This provides power to the trip-
and-close capacitors and the heaters in the recloser.
DC Auxiliary Input
The trip-and-close capacitors are maintained from the DC
source. Upon loss of the DC power, the trip-and-close
capacitors will maintain trip and close power for several
minutes. If the trip-and-close capacitors are discharged,
the recloser is inoperative until DC power is resumed.
AC Auxiliary Input
The trip-and-close capacitors are charged through both
the AC auxiliary input power and the recloser control. This
applies to recloser controls with an internal battery but is
not applicable for the Form 6 rack or yard mount controls
that use an external substation supply. Upon loss of AC
power, the capacitors will be continuously charged from
the control battery to allow tripping and will also be trickle-
charged to allow for backup closing.
The charge on the capacitors will be maintained for the
duration of the control battery power. Allow one minute
between backup close operations to recharge the capaci-
tors. However, the NOVA recloser is ready to trip immedi-
ately after performing a backup closing. Should the battery
power discharge to the disconnect level, backup closing
is disabled until AC auxiliary power is resumed. Apply AC
auxiliary input power to the NOVA recloser to recharge the
capacitors.
S280-42-1
7
!
SAFETY
NOW
!
SAFETY
FIRST
!
SAFETY
FOR YOUR SAKE
!
SAFETY
MAKES SENSE
!
SAFETY
USE IT
!
SAFETY
FOR LIFE
Electronic
Control
120/240 VAC
Power Cable
14-Pin
Control Cable
O
P
E
N
2-Pin Auxiliary
Input Power Cable
Potential
Transformer
(120/240 VAC)
Figure 6.
Auxiliary-powered NOVA recloser mechanism con-
figuration with potential transformer input power.
Figure 5.
Type NOVA recloser Type B, C, D, and E mechanism, auxiliary-powered interface shown (view from bottom of
recloser with bottom cover and actuator board safety shield removed).
Manual OPEN Handle Mechanical Operations CounterOPEN/CLOSE
Contact Position
Indicator
Heater
Magnetic Actuator
Trip-and-Close
Capacitors
Actuator Board
Auxiliary Input
Power Receptacle
(auxiliary-powered
NOVA Only)
Ground Connector
#10 - #2 Stranded
Control Cable Receptacle
(14-pin auxiliary-powered
NOVA) or (19-pin control-
powered NOVA)
Aluminum
Mechanism Housing
(Standard)
Heater
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