Cooper Power Systems NOVA 15 Owner's manual

Types NOVA 15, NOVA 27, and NOVA 38;
Three-Phase Microprocessor-Controlled;
Installation and Operation Instructions
Reclosers
Service Information
Safety Information ..................................................... 2
Hazard Statement Definitions ................................. 2
Safety Instructions .................................................. 2
Product Information .................................................. 3
Introduction ............................................................ 3
Acceptance and Initial Inspection ........................... 3
Handling and Storage.............................................. 3
Standards .............................................................. 3
Description of Operation ......................................... 3
Ratings and Specifications ....................................... 4
Check Recloser Ratings Prior to Installation ........... 4
Dimensions ................................................................ 5
NOVA Mechanism Interface Options ....................... 6
Control-Powered Interface ..................................... 6
Auxiliary-Powered Interface ..................................... 7
Installation Procedure ............................................... 8
Moving the Recloser ............................................... 8
Lifting the Recloser ................................................. 8
Remove Recloser from Service .............................. 11
Grounding the NOVA Recloser ............................... 11
Operation ................................................................... 14
Electrical Operation ................................................ 14
OPEN/CLOSE Contact Position Indicator ............... 14
Hotstick Operation (Manual Open, Electrical Close) ..... 14
Internal Voltage Sensing Option .............................. 15
Accessories ............................................................... 19
Auxiliary Switch ....................................................... 19
Terminals ................................................................ 19
Pole-Mounting Hanger ........................................... 20
Arrester-Mounting Brackets ................................... 21
Substation-Mounting Frame ................................... 22
Service Information ................................................... 23
Service Requirements ............................................ 23
Frequency of Inspection ......................................... 23
Testing Operation ................................................... 23
High-Potential Withstand Testing ........................... 24
Module Flashover Service ....................................... 25
Troubleshooting ........................................................ 25
Unit Will Not Close ................................................. 25
Unit Will Not Open Electrically ................................ 25
Contents
S280-42-1
1
March 2011 • Supersedes 2/2011
NOVA 15 for Serial Number 3421 and above
NOVA 27 for Serial Number 3268 and above
NOVA 38 for Serial Number CP571192790 and above
This bulletin is also applicable to product
serial numbers beginning with the prefix CP57.
Figure 1.
NOVA three-phase, microprocessor-controlled recloser, shown with two-hole, flat-pad accessory.

2
Type NOVA Three-Phase, Microprocessor-Controlled Recloser Installation and Operation Instructions
The instructions in this manual are not intended as a
substitute for proper training or adequate experience in
the safe operation of the equipment described. Only com-
petent technicians who are familiar with this equipment
should install, operate, and service it.
A competent technician has these qualifications:
 •Isthoroughlyfamiliarwiththeseinstructions.
 •Is trained in industry-accepted high- and low-voltage
safeoperatingpracticesandprocedures.
 •Is trained and authorized to energize, de-energize,
clear,andgroundpowerdistributionequipment.
 •Istrainedinthecareanduseofprotectiveequipment
suchasflashclothing,safetyglasses,faceshield,hard
hat,rubbergloves,hotstick,etc.
Following is important safety information. For safe installa-
tion and operation of this equipment, be sure to read and
understand all cautions and warnings.
Safety Instructions
Following are general caution and warning statements that
apply to this equipment. Additional statements, related to
specific tasks and procedures, are located throughout the
manual.
SAFETY INFORMATION
SAFETY FOR LIFE
Cooper Power Systems products meet or exceed all applicable industry standards relating to product safety. We actively pro-
mote safe practices in the use and maintenance of our products through our service literature, instructional training programs,
and the continuous efforts of all Cooper Power Systems employees involved in product design, manufacture, marketing, and
service.
We strongly urge that you always follow all locally approved safety procedures and safety instructions when working around
high voltage lines and equipment and support our “Safety For Life” mission.
This manual may contain four types of hazard state-
ment:
DANGER: Indicates an imminently hazard-
ous situation which, if not avoided, will
result in death or serious injur.
WARNING: Indicates a potentially hazard-
ous situation which, if not avoided, could
result in death or serious injury.
CAUTION: Indicates a potentially hazard-
ous situation which, if not avoided, may
result in minor or moderate injury.
CAUTION: Indicates a potentially hazardous
situation which, if not avoided, may result in
equipment damage only.
Hazard Statement Definitions
!
SAFETY
NOW
!
SAFETY
FIRST
!
SAFETY
FOR YOUR SAKE
!
SAFETY
MAKES SENSE
!
SAFETY
USE IT
!
SAFETY
FOR LIFE
!
SAFETY
NOW
!
SAFETY
FIRST
!
SAFETY
FOR YOUR SAKE
!
SAFETY
MAKES SENSE
!
SAFETY
USE IT
!
SAFETY
FOR LIFE
WARNING:
This equipment is not intended to protect human life.
Follow all locally approved procedures and safety
practices when installing or operating this equipment.
Failure to comply may result in death, severe personal
injury, and equipment damage. G102.1
DANGER:
Hazardous voltage. Contact with hazardous voltage will
cause death or severe personal injury. Follow all locally
approved safety procedures when working around high-
and low-voltage lines and equipment. G103.3
WARNING:
Before installing, operating, maintaining, or testing
this equipment, carefully read and understand the
contents of this manual. Improper operation, handling,
or maintenance can result in death, severe personal
injury, and equipment damage. G101.0
WARNING:
Power distribution and transmission equipment must be
properly selected for the intended application. It must
be installed and serviced by competent personnel who
have been trained and understand proper safety proce-
dures. These instructions are written for such personnel
and are not a substitute for adequate training and expe-
rience in safety procedures. Failure to properly select,
install, or maintain power distribution and transmission
equipment can result in death, severe personal injury,
and equipment damage. G122.3

Introduction
ServiceInformationS280-42-1 provides installation, oper-
ation, and service instructions for the Type NOVA™three-
phase, microprocessor-controlled recloser. Before install-
ing and operating this recloser, carefully read and under-
stand the contents of this manual.
Read This Manual First
Read and understand the contents of this manual and fol-
low all locally approved procedures and safety practices
before installing or operating this equipment. This recloser
is used in conjunction with a Cooper Power Systems
microprocessor-based recloser control.
If used with a Form 4C control, refer to• Service
InformationS280-77-1.
If used with a Form 4D Pole Mount control, refer to•
ServiceInformationS280-104-1.
If used with a Form 5 control, refer to• Service
InformationS280-79-10.
If used with a Form 6 Rack Mount control, refer to•
ServiceInformationS280-70-1.
If used with a Form 6 Yard Mount control, refer to•
ServiceInformationS280-70-2.
If used with a Form 6 Pole Mount control, refer to•
ServiceInformationS280-70-3.
If used with an FXB control, refer to• ServiceInformation
S280-78-1.
The NOVA recloser with Type A mechanism/control-•
powered interface is not compatible with the FXB
control.
The NOVA recloser is not compatible with the Form 2,•
Form 3, nor Form 3A controls.
Additional Information
These instructions cannot cover all details or variations
in the equipment, procedures, or process described nor
provide directions for meeting every possible contingency
during installation, operation, or maintenance. For addi-
tional information, contact your Cooper Power Systems
representative.
Acceptance and Initial Inspection
Each recloser is completely assembled, tested, and
inspected at the factory. It is in good condition when
accepted by the carrier for shipment. Upon receipt, inspect
the shipping container for signs of damage. Unpack the
recloser and inspect it thoroughly for damage incurred dur-
ing shipment. If damage is discovered, file a claim with the
carrier immediately.
Handling and Storage
Be careful during handling and storage of the recloser to
minimize the possibility of damage. Refer to the Moving
the Recloser and Lifting the Recloser sections. If the
recloser is to be stored for any length of time prior to instal-
lation, provide a clean, dry storage area.
Cooper Power Systems recommends transporting NOVA
reclosers in the closed position to maximize the operational
performance of the unit.
Standards
The Type NOVA reclosers are designed and tested in
accordance with:
IEEE Standard C37.60-2003™
IEEE Standard C37.61-1973™
ANSI C37.85 - 2002
Quality Standards
ISO 9001 Certified Quality Management System
Description of Operation
The Type NOVA recloser is a three-phase, vacuum-
interrupting recloser designed for electrical distribution
systems through 34.5 kV. The NOVA recloser is designed
and tested to be compatible with Cooper Power System
control types. The Type NOVA recloser is available with
two configuration options: control-powered interface and
auxiliary-powered interface.
The solid polymer insulation system does not rely on a gas-
eous, liquid, or foam dielectric. The NOVA recloser is highly
resistant to ozone, oxygen, moisture, contamination, and
ultraviolet light. The NOVA recloser has three solid-polymer
interrupter modules, an embedded current transformer,
and a standard aluminum mechanism housing. It is suit-
able for operation through a temperature range of -40°C
to +55°C.
S280-42-1
3
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SAFETY
NOW
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SAFETY
FIRST
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SAFETY
FOR YOUR SAKE
!
SAFETY
MAKES SENSE
!
SAFETY
USE IT
!
SAFETY
FOR LIFE
PRODUCT INFORMATION

Check Recloser Ratings Prior To
Installation
The recloser must be applied within its specified ratings.
Check data plate ratings and compare with the system
characteristics at the point of application prior to installa-
tion. Tables 1, 2, 3, and 4 list the ratings and specifications
for the Type NOVA recloser. Table 5 lists the auxiliary-
powered interface power requirements.
Type NOVA Three-Phase, Microprocessor-Controlled Recloser Installation and Operation Instructions
4
RATINGS AND SPECIFICATIONS
TABLE 5
Auxiliary-Powered Interface Power Requirements
Voltage Normal Current Operating Current Duration Recommended Power
120 VAC 0.2 A 1.0 A 3 sec 150 VA
240 VAC 0.1 A .5 A 3 sec 150 VA
125 VAC 0.2 A 1.0 A 3 sec 150 VA
250 VAC 0.1 A .5 A 3 sec 150 VA
TABLE 4
Duty Cycle
Percentage of Number of Minimum
Type Interrupting Rating Unit Operations Circuit X/R Value
NOVA 15-20 88 4
45-55 112 8
100 32 17*
Total 232
*Value shown for 60 Hz.
Description 15 kV 15 kV 27 kV 27 kV 38 kV
Min. Mechanical/Electrical Operations
Without Maintenance (C-O) 10,000 10,000 10,000 10,000 10,000
Mass (Weight) - kg (lbs) 86 (190) 91 (200) 91 (200) 101 (223) 101 (223)
TABLE 3
Mechanical Ratings
Description 15 kV 15 kV 27 kV 27 kV 38 kV
Maximum Voltage 15.5 kV 15.5 kV 29.2 kV 29.2 kV 38.0 kV
Rated Basic Impulse Level 110.0 kV 125.0 kV 125.0 kV 150.0 kV 170.0 kV*
Radio Noise Limit (µv) 100 @ 9.4 kV 100 @ 9.4 kV 100 @ 16.4 kV 100 @ 16.4 kV 100 @ 23.0 kV
Power Frequency Withstand, Dry 50 kV 50 kV 60 kV 60 kV 70 kV
Power Frequency Withstand, Wet 45 kV 45 kV 50 kV 50 kV 60 kV
TABLE 1
Voltage Ratings
*170 kV beginning with S/N CP571192790; S/N 1000 through S/N CP571192789 are rated 150 kV BIL or less — as indicated on the nameplate.
*800 amp accessory is also available.
**16.0 kA option is also available. (Making Current is 41.0 kA Asymmetrical Peak.)
Description 15 kV 15 kV 27 kV 27 kV 38 kV
Rated Continuous Current 630 A* 630 A* 630 A* 630 A* 630 A*
Short Circuit Current, Symmetrical 12.5 kA** 12.5 kA** 12.5 kA** 12.5 kA** 12.5 kA
Making Current, Asymmetrical Peak 32.0 kA 32.0 kA 32.0 kA 32.0 kA 32.0 kA
Cable Charging Current 10 A 10 A 25 A 25 A 40A
TABLE 2
Current Ratings (Amperes)

S280-42-1
5
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SAFETY
NOW
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SAFETY
FIRST
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SAFETY
FOR YOUR SAKE
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SAFETY
MAKES SENSE
!
SAFETY
USE IT
!
SAFETY
FOR LIFE
DIMENSIONS
Figure 2.
Type NOVA recloser dimensions, NOVA 27 shown.
Description 15 kV 15 kV 27 kV 27 kV 38 kV
110 kV BIL 125 kV BIL 125 kV BIL 150 kV BIL 170 kV BIL
Terminal to terminal 1030 1030 1030 1030 1030
(40.5) (40.5) (40.5) (40.5) (40.5)
Lower terminal to ground/earth 673 772 772 950 950
(26.5) (30.5) (30.5) (37.5) (37.5)
Creepage Distances
B C
NOVA 15 791 508
110 kV BIL (31.25) (20)
NOVA 15 847 564
125 kV BIL (33.25) (22.25)
NOVA 27 847 564
125 kV BIL (33.25) (22.25)
NOVA 27 946 663
150 kV BIL (37.25) (26.0)
NOVA 38 946 663
170 kV BIL (37.25) (26.0)
Terminal Options A
Eyebolt, 1/0 - 500 mcm 80 (3.25)
Cable Range (630 A maximum)
Eyebolt, 4/0 - 1000 mcm 108 (4.25)
Cable Range (800 A maximum)
Flat Pad, 2-hole 114 (4.5)
(630 A maximum)
Flat Pad, 4-hole 121 (4.75)
(800 A maximum)
Stud Type, 1.125 - 12 threads 82 (3.25)
(800 A maximum)
285
(11.25)
Terminal
Connectors
1/0 - 500 MCM
(Standard)
Terminal
Connectors
1/0 - 500 MCM
(Standard)
A
271
(10.75)
1000
(39.50)
285
(11.25)
O
P
E
N
B
C
388
(15.5)
388
(15.5)
A
A
413
(16.25)
C
L
O
S
E
D
NOTE: All dimensions are mm (inches). Dimensions shown are approximate.

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

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
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SAFETY
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SAFETY
FOR YOUR SAKE
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SAFETY
MAKES SENSE
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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

When installing the recloser, refer to the applicable recloser-
mounting frame instructions. Installation instructions are
included with the mounting frame.
1. Check the data plate ratings. Make sure the rat-
ings, settings, and interface options on the recloser
data plate (Table 7 and Figure 14) are correct for the
planned installation.
2. Perform high-potential withstand tests. Prior to
installing the NOVA recloser, perform high-potential
withstand tests. Refer to the Service Information sec-
tion for high-potential withstand test procedures.
3. Install the recloser. Install the recloser in the appro-
priate Cooper Power Systems pole- or substation-
mounting frame. Refer to Figure 7 for moving and lifting
instructions.
• Before hanging the recloser on the pole, manually
open the unit by lowering the yellow handle.
Type NOVA Three-Phase, Microprocessor-Controlled Recloser Installation and Operation Instructions
8
WARNING: This equipment is not intended to
protect human life. Follow all locally approved
procedures and safety practices when installing or
operating this equipment. Failure to comply can result in
death, severe personal injury, and equipment damage.
G102.1
WARNING: Hazardous voltage. Always use a
hotstick when working with this equipment. Failure
to do so could result in contact with high voltage,
which will cause death or severe personal injury.
G108.1
CAUTION: Follow all locally approved safety practices
when lifting and mounting the equipment. Use the lifting
lugs provided. Lift the unit smoothly and do not allow
the unit to shift. Improper lifting can result in equipment
damage. G106.2
CAUTION: Personal injury. Sheds on epoxy
encapsulation have sharp edges. Wear protective
gloves when handling the unit. Failure to do so can result
in cuts and abrasions. T258.1
INSTALLATION PROCEDURE
†Serial number format: CP57#####XY
*Auxiliary-powered with 14-pin control receptacle
**Control-powered with 19-pin control receptacle
TABLE 7
Nameplate Stamping†
Stamping
Option X Y
Act 1 Interface with VSAM A
Act 2 Interface with VSAM (small actuator) B
Act 2C Interface with VSAM (large actuator) C
Act 2C Interface with VBSI D
Act 2C Interface with VSAM (small actuator) E
Act 2C Interface with VBSIb J
48 VDC Interface Input / 48 VDC Heater A*
48 VDC Interface Input / 120 VAC Heater B**
48 VDC Interface Input / 240 VAC Heater C**
125 VDC Interface Input / 125 VDC Heater D*
250 VDC Interface Input / 250 VDC Heater E*
120 VAC Interface Input / 120 VAC Heater H*
240 VAC Interface Input / 240 VAC Heater J*
Figure 7.
Moving and lifting the Type NOVA recloser.
O
P
E
N
C
L
O
S
E
A
Cg
B
Lifting
Lugs
Moving the Recloser
Type NOVA reclosers are shipped palletized (bolted onto
a pallet). When moving with a fork truck/lift, the recloser
must remain bolted to the pallet to avoid damage to the
OPEN/CLOSE contact position indicator.
Cooper Power Systems recommends transporting
NOVA reclosers in the closed position to maximize the
operational performance of the unit.
Lifting the Recloser
Follow all approved safety practices when making hitch-
es and lifting the equipment. Lift the unit smoothly and
do not allow the unit to shift.
A: Sling height for 15 kV and 27 kV with 125 BIL units: 914 mm (36 in)
Sling height for 27 kV with 150 BIL and 38 kV units: 1067 mm (42 in)
B: Center of gravity (Cg) is approximately 100 mm (4 in) below plane of
lower terminals.
CAUTION: Tip-over Hazard. High center of grav-
ity. Use a 4-point hitch to prevent switchgear from
overturning during lifting operations. Improper lifting can
result in personal injury or equipment damage. T297.0

4. Ground the recloser. Make the ground connection to
the ground connector. The ground connector is located
on the back of the mechanism housing.
• Refer to Figures 3 and 5 for ground connector loca-
tion. The ground clamp accepts #10 to #2 stranded
cables.
• Refer to Figures 11, 12, and 13 for recommended
grounding for the Type NOVA recloser.
5. Install the control. Refer to the control installation
manual and install the control. Make sure the control
cable is connected between the control and the reclos-
er, the control is properly programmed for the planned
installation, and the control is grounded.
Control-powered NOVA reclosers manufactured after
September 2004 require a Voltage Trip/Close (VTC)
interface and a VTC-ready control for tripping and
closing. This VTC requirement applies to three-phase,
control-powered NOVA reclosers with a Type A or
Type D mechanism with serial numbers 100,000 and
above or beginning with the characters CP57. They
can be identified by labels prominently displayed on
the bottom of the recloser tank and on the side near
the 19-pin receptacle, as shown in Figure 8. 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.
S280-42-1
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SAFETY
FOR YOUR SAKE
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SAFETY
MAKES SENSE
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SAFETY
USE IT
!
SAFETY
FOR LIFE
WARNING: Hazardous voltage. Solidly ground all
equipment. Failure to comply can result in death,
severe personal injury, and equipment damage. T223.2
Figure 8.
Control-powered NOVA recloser VTC labels.
CAUTION: Equipment misoperation. The control-
powered NOVA reclosers that require a VTC
interface must be used with VTC-ready controls. Failure
to use a VTC-ready control will result in failure to trip or
close. G144.0

6. Make high-voltage line connections (refer to Figures
9 and 10).
Note: Disconnect switches and bypass switches are not
required, but are highly recommended as they facili-
tate switching and isolation.
A. Connect high-voltage lines to recloser bushing ter-
minals. Refer to Figure 10 for terminal identification
of the NOVA recloser. Terminal connection to cop-
per conductors only are recommended.
To rotate a flat-pad or eyebolt bushing terminal prior
to connecting power line leads, loosen the pinch
bolt on the terminals. After rotating the terminal,
retighten the pinch bolt as follows: torque 3/8-16
pinch bolts to 20—23 N•m (15—17 ft•lbs); torque
1/2-13 pinch bolts to 39—42 N•m (29—31 ft•lbs).
B. Provide surge arrester protection. Surge arrester
protection should be provided on both sides; refer
to Figure 9.
Type NOVA Three-Phase, Microprocessor-Controlled Recloser Installation and Operation Instructions
10
Surge
Arresters
Bypass
Switch
Disconnect
Switch
Surge
Arresters
Disconnect
Switch
Recloser
1
3
5
2
4
6
Figure 9.
Connection diagram shows complete surge protec-
tion and illustrates bypass and disconnect switches.
CAUTION: Equipment Damage. Do not adjust or rotate
bushing terminals without first removing power line
leads and loosening pinch bolt to release clamp tension.
Failure to remove tension between the clamp and the
interrupter stud prior to rotating the terminal will dam-
age the encapsulated interrupter assembly resulting in
equipment damage. T347.0
O
P
E
N
642
531
C
L
O
S
E
D
Figure 10.
Terminal identification of Type NOVA recloser.
IMPORTANT: The default connections use the horizon-
tal bushing as the source side and the vertical bushing
as the load side. Also, the horizontal bushing may be
used as the load side and the vertical bushing as the
source side. Note that reversing the source and load
bushings has no effect on overcurrent protection but
may require setting or wiring changes to the control for
correct metering.
If equipped with internal voltage sensors, the horizontal
bushings (1, 3, 5) must be connected to the source. The
internal voltage sensors cannot monitor source-side volt-
age when the NOVA recloser is in the OPEN position if
the horizontal bushings are connected to the load.