Control-Powered Interface
The Type NOVA recloser mechanism with the control-
powered interface is fully operational with Cooper Power
Systems Form 4C, Form 5, and Form 6 microprocessor-
based controls equipped with the required DC-to-DC con-
verter, interface circuit, and a fully shielded 19-pin cable.
It is not compatible with the Types F3A nor FXB controls.
The control-powered interface includes a 19-pin receptacle
on the recloser and internal heaters (for humidity control)
powered from the control input power supply (AC or DC).
Control-powered NOVA reclosers manufactured after
September 2004 require a Voltage Trip/Close (VTC) inter-
face and a VTC-ready control for tripping and closing. This
VTC requirement applies to three-phase, control-powered
NOVA reclosers with serial numbers 100,000 and above
or beginning with the characters CP57; refer to Table 6.
Control-powered NOVA reclosers with serial numbers
below 100,000 do not require a VTC-ready control. Refer
to the recloser nameplate for the serial number.
The DC-to-DC converter board converts the control’s 24
VDC battery supply to 53 VDC to charge the trip/close
capacitors in the NOVA mechanism. The DC-to-DC con-
verter board also houses voltage monitoring and condition-
ing circuits that protect the battery from failure and provide
trip/close operations without AC power. In the absence of
AC power to the electronic control, the control battery will
provide the trip and close operations. A complete four-trip
sequence with minimal reclose intervals as configured for
each control is obtainable without AC power. The recloser
and control system is capable of exceeding over one thou-
sand operations on battery power only.
Type NOVA Three-Phase, Microprocessor-Controlled Recloser Installation and Operation Instructions
6
Electronic
Control
Potential
Transformer
(120/240 VAC)
120/240 VAC
Power Cable
19-Pin
Control Cable
O
P
E
N
C
L
O
S
E
D
Figure 4.
Control-powered NOVA recloser configuration with
potential transformer input power.
NOVA MECHANISM INTERFACE OPTIONS
TABLE 6
Serial Number Break for Control-Powered NOVA
Reclosers with VTC
Control-Powered NOVA Serial No.
Recloser
NOVA 15 100,000 or CP57#######
NOVA 27 100,000 or CP57#######
NOVA 38 100,000 or CP57#######
Figure 3.
Type NOVA recloser Type A mechanism with control-powered interface (view from bottom of recloser with bot-
tom cover removed).
CT Protection Board Manual OPEN HandleTrip and Close CapacitorsHeater
Magnetic Actuator
OPEN/CLOSE
Contact Position
Indicator
Actuator Board
Control Cable
Receptacle
Mechanical
Operations Counter
Ground Connector
#10 - #2 Stranded
Aluminum
Mechanism Housing
(Standard)
Heater
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