S&C IntelliCap Plus User manual

S&C IntelliCap®Plus Automatic Capacitor Control
Instruction Sheet 1023-510
© S&C Electric Company 2003-2017, all rights reserved
October 30, 2017
Installation
Table of Contents
Section Page Section Page
Introduction
Qualified Persons ..............................2
Read this Instruction Sheet ......................2
Retain this Instruction Sheet......................2
Proper Application..............................2
Special Warranty Provisions ......................2
Safety Information
Understanding Safety-Alert Messages ..............4
Following Safety Instructions .....................4
Replacement Instructions and Labels ..............4
Safety Precautions........................... 5
Pre-Installation Instructions
Applicable Software ............................6
Pre-Installation Checklist.........................6
Optional In-Shop Setup Steps ....................6
Installing the Capacitor Control
On-Site Installation .............................7
Meter Base Mounting ...........................8
Bracket Mounting .............................14
Harness Wiring ...............................18
220-Volt Wiring ...............................19
Connecting Sensors ...........................20
Energize and Test the Control....................22
Communication Equipment......................23
Connecting Communication Hardware .............24
Installation and Connection Drawings......... 25

2 S&C Instruction Sheet 1023-510
Introduction
WARNING
The equipment covered by this publication must be installed, operated, and main-
tained by qualified persons who are knowledgeable in the installation, operation, and
maintenance of overhead electric power distribution equipment along with the associ-
ated hazards.
A qualified person is one who is trained and competent in:
• The skills and techniques necessary to distinguish exposed live parts from nonlive
parts of electrical equipment
• The skills and techniques necessary to determine the proper approach distances
corresponding to the voltages to which the qualified person will be exposed
• The proper use of the special precautionary techniques, personal protective equip-
ment, insulating and shielding materials, and insulated tools for working on or near
exposed energized parts of electrical equipment
These instructions are intended only for such qualified persons. They are not intended
to be a substitute for adequate training and experience in safety procedures for this
type of equipment.
NOTICE
Read this instruction sheet thoroughly and carefully before installing or operating your
S&C IntelliCap Plus Automatic Capacitor Control. Familiarize yourself with the Safety
Information on page 4 and Safety Precautions on page 5. The latest version of this pub-
lication is available online in PDF format at sandc.com/en/support/product-literature/.
This instruction sheet is a permanent part of your S&C IntelliCap Plus Automatic Capacitor
Control. Designate a location where you can easily retrieve and refer to this publication.
WARNING
The equipment in this publication must be selected for a specific application. The
application must be within the ratings furnished for the selected equipment.
The standard warranty contained in S&C’s standard conditions of sale, as set forth in Price
Sheets 150 and 181, applies to the S&C IntelliCap Plus Automatic Capacitor Control, except
that the rst paragraph of the said warranty is replaced by the following:
(1) General: The seller warrants to the immediate purchaser or end user for a period of
10 years from the date of shipment that the equipment delivered will be of the kind and
quality specified in the contract description and will be free of defects of workmanship and
material. Should any failure to conform to this warranty appear under proper and normal
use within 10 years after the date of shipment, the seller agrees, upon prompt notification
thereof and confirmation that the equipment has been stored, installed, operated, inspected,
and maintained in accordance with the recommendations of the seller and standard industry
practice, to correct the nonconformity either by repairing any damaged or defective parts
of the equipment or (at the seller’s option) by shipment of necessary replacement parts. The
seller’s warranty does not apply to any equipment that has been disassembled, repaired, or
altered by anyone other than the seller. This limited warranty is granted only to the immedi-
ate purchaser or, if the equipment is purchased by a third party for installation in third-party
equipment, the end user of the equipment. The seller’s duty to perform under any warranty
may be delayed, at the seller’s sole option, until the seller has been paid in full for all goods
purchased by the immediate purchaser. No such delay shall extend the warranty period.
Replacement parts provided by the seller or repairs performed by the seller under the
warranty for the original equipment will be covered by the above special warranty provi-
sion for its duration. Replacement parts purchased separately will be covered by the above
special warranty provision.
Qualified Persons
Read this
Instruction Sheet
Retain this
Instruction Sheet
Proper Application
Special Warranty
Provisions

S&C Instruction Sheet 1023-510 3
Introduction
Warranty of the S&C IntelliCap Plus Automatic Capacitor Control is contingent upon the
installation, configuration, and use of the control or software in accordance with S&C’s
applicable instruction sheets.
This warranty does not apply to major components not of S&C manufacture, such as
communication devices. However, S&C will assign to the immediate purchaser or end user
all manufacturer’s warranties that apply to such major components.
Warranty of equipment/services packages is contingent upon receipt of adequate informa-
tion on the user’s distribution system, sufficiently detailed to prepare a technical analysis.
The seller is not liable if an act of nature or parties beyond S&C’s control negatively impact
performance of equipment/services packages; for example, new construction that impedes
radio communication, or changes to the distribution system that impact protection systems,
available fault currents, or system-loading characteristics.

4 S&C Instruction Sheet 1023-510
Safety Information
Understanding
Safety-Alert Messages
Following
Safety Instructions
Replacement
Instructions and
Labels
Several types of safety-alert messages may appear throughout this instruction sheet and
on labels attached to the S&C IntelliCap Plus Automatic Capacitor Control. Familiarize
yourself with these types of messages and the importance of these various signal words:
DANGER
“DANGER” identifies the most serious and immediate hazards that will likely result in
serious personal injury or death if instructions, including recommended precautions,
are not followed.
WARNING
“WARNING” identifies hazards or unsafe practices that can result in serious personal
injury or death if instructions, including recommended precautions, are not followed.
CAUTION
“CAUTION” identifies hazards or unsafe practices that can result in minor personal
injury if instructions, including recommended precautions, are not followed.
NOTICE
“NOTICE”identifies important procedures or requirements that can result in product or
property damage if instructions are not followed.
If you do not understand any portion of this instruction sheet and need assistance,
contact your nearest S&C Sales Office or S&C Authorized Distributor. Their tele-
phone numbers are listed on S&C’s website sandc.com Or call S&C Headquarters
at [phone]; in Canada, call S&C Electric Canada Ltd. at [phone].
NOTICE
Read this instruction sheet thoroughly and carefully
before installing or operating your S&C IntelliCap Plus
Automatic Capacitor Control.
If you need additional copies of this instruction sheet, contact your nearest S&C Sales Ofce,
S&C Authorized Distributor, S&C Headquarters, or S&C Electric Canada Ltd.
It is important that any missing, damaged, or faded labels on the equipment be replaced
immediately. Replacement labels are available by contacting your nearest S&C Sales Office,
S&C Authorized Distributor, S&C Headquarters, or S&C Electric Canada Ltd.

S&C Instruction Sheet 1023-510 5
Safety Precautions
DANGER
The S&C IntelliCap Plus Automatic Capacitor Control line voltage input range is 93
to 276 Vac. Failure to observe the precautions below will result in serious personal
injury or death.
Some of these precautions may differ from your company’s operating procedures and
rules. Where a discrepancy exists, follow your company’s operating procedures and rules.
1. QUALIFIED PERSONS.Access to the IntelliCap Plus-
Automatic Capacitor Control must be restricted only to
Qualified Persons.
2. SAFETY PROCEDURES. Always follow safe operating
procedures and rules. Always maintain proper clearance
from energized components.
3. PERSONAL PROTECTIVE EQUIPMENT. Always
use suitable protective equipment, such as rubber
gloves, rubber mats, hard hats, safety glasses, arc-flash
clothing,and fallprotection,in accordancewith safeoperating
procedures and rules.
4. SAFETY LABELS AND TAGS. Do not remove or
obscure any of the “DANGER,” “WARNING,” “CAUTION,” or
“NOTICE” labels and tags. Remove tags ONLY if instructed
to do so.
5. MAINTAINING PROPER CLEARANCE.Always
maintain proper clearance from energized components.

6 S&C Instruction Sheet 1023-510
Pre-Installation Instructions
This instruction sheet was prepared for use with IntelliCap Plus Software:
PCSD120S and PCVD120S.
The software identification is available on the IntelliLink® Setup Software
Troubleshooting>Control & Switch Information screen. For questions regarding the
applicability of information in this instruction sheet to future product releases, please
contact S&C Electric Company.
Before installing the IntelliCap Plus control, carry out the following steps in the shop:
STEP 1. Inspect the control for visible damage.
Make sure there is no obvious damage to the control enclosure or any internal
components.
STEP 2. Make sure you have the required sensor cable(s).
With var, neutral current, or neutral voltage sensing, the control may require a
connection cable for the sensors. Be sure to have the correct sensor cables for
this installation.
STEP 3. Make sure you have the required setup software and equipment.
Although it is possible to use the faceplate buttons and LCD display for initial setup
of an IntelliCap Plus control, using IntelliLink software is easier and quicker. Use
the faceplate buttons for later adjustments in the eld.
PC Computer—Microsoft Windows®7 operating system, and Internet
Explorer 5.0 or higher, 32 MB of RAM, USB or Serial Port, and access to the S&C
Automation Customer Support Portal.
Serial Communication Cable—Connects the computer to the LOCAL COMM
PORT on the control. Use a straight-through cable, not a null-modem cable. The
cable must be long enough to connect to an installed IntelliCap Plus control.
The serial connection is RS232 with a DB9-pin connector.
If your computer only has USB ports, use a Serial to USB cable adapter.
STEP 4. Make sure you have the communication equipment for this control.
Depending on the location of your installation, one or more repeater radios
may be needed to enable communication between the control and the SCADA
master station. For more details, see the manufacturer’s documentation for your
communication system.
STEP 5. Do one of the following:
• Go to the installation site and install the IntelliCap Plus control. Then,
congure the control as described in Instruction Sheet 1023-530, S&C IntelliCap
Plus Automatic Capacitor Control: Setup.”
• Complete the conguration steps while in the shop. Then, install the control
at the site.
The following steps can be completed while still in the shop or later at the installation site:
STEP 1. Install the IntelliLink software on your computer.
For details, see the “Install the IntelliLink Software” in Instruction Sheet 1023-
530, S&C IntelliCap Plus Automatic Capacitor Control: Setup.”
STEP 2. If this control is part of a SCADA system, congure the communication equipment.
STEP 3. Congure the control software.
Most of the software setup can be completed in the shop. For an explanation of
how to congure the software, see the “Setting Up the Capacitor Control” section
in Instruction Sheet 1023-530, S&C IntelliCap Plus Automatic Capacitor Control;
Setup.”
Applicable Software
Pre-Installation
Checklist
Optional In-Shop
Setup Steps

S&C Instruction Sheet 1023-510 7
Installing the Capacitor Control
Follow these steps to install the capacitor control:
STEP 1. Read the following warnings before installing or operating this equipment:
WARNING
This control is connected to capacitors operating at primary voltage levels. High
voltage may be present in the wiring to the control or the control itself during cer-
tain malfunctions of the capacitor bank wiring or grounding system or because of a
malfunction of the capacitor bank itself. For this reason, access to the control should be
treated with the same safety precautions that would be applied when accessing other
high-voltage lines and equipment. Follow all locally approved safety procedures when
working on or around this control.
When open-circuited, current transformers can produce high voltages that can result
in injury or death. Proper shorting hardware and operating procedures are required for
safe operation. The current transformer must be shorted before installing or removing
the control. This control does NOT provide for shorting of the current transformer.
WARNING
Do not energize the 110-240 Vac power source entering the control enclosure until all
wiring is complete.
Do not plug the sensor cable into the control until called for in the instructions.
Do not enable communications by connecting radios, fiber-optic cables, or dedicated
phone lines until this is called for in the instructions.
Before attempting to access an existing installation, check carefully for visible or
audible signs of electrical or physical malfunction—do this before touching or operat-
ing the control or any other part of the installation. These warning signs include such
things as smoke, fire, open fuses, crackling noises, loud buzzing, etc. If a malfunction is
suspected, treat all components of the installation, including the control and associated
mounting hardware, as if they were elevated to primary (HIGH) voltage.
You must follow the sequence of installation steps outlined in this instruction sheet to
insure a safe and successful control installation.
WARNING
These instructions do NOT replace the need for utility operation standards. Any conflict
between the information in this document and utility practices should be reviewed by
appropriate utility personnel and a decision made as to the correct procedures to follow.
The S&C IntelliCap Plus Automatic Capacitor Control is connected to switchgear
operating at primary voltage levels. High voltage may be present in the wiring to the
switch control or the switch control itself during certain failures of the switchgear wiring
or grounding system, or because of a failure of the switch itself. For this reason, access
to the switch control should be treated with the same safety precautions that would
be applied when accessing other high-voltage lines and equipment. Follow all locally
approved safety procedures when working on or around this switch control.
Before attempting to access an existing switch installation, check carefully for vis-
ible or audible signs of electrical or physical malfunction (do this before touching or
operating the switch control or any other part of the installation). These warning signs
include such things as smoke, fire, open fuses, crackling noises, loud buzzing, etc. If a
malfunction is suspected, treat all components of the installation, including the switch
control and associated mounting hardware, as if they were elevated to primary (high)
voltage.
STEP 2. Remove the load fuse.
Remove the 10-A fuse near the lower right corner of the faceplate. See Figure 1
on page 8.
On-Site Installation

8 S&C Instruction Sheet 1023-510
Meter Base Mounting
Load fuse
Test points
Terminal strip
Figure 1. Load fuse on the faceplate.
WARNING
Leave the 10-A fuse out until instructed to replace it later in the installation process. If
left installed, potentially lethal high voltage may be present.
STEP 3. Install the control on the meter base, pole, or panel in a location with minimum
trafc exposure.
All IntelliCap Plus controls have an internal terminal strip; the terminal strip
configuration is shown on a label inside the enclosure below the faceplate. The
terminal strip wires connect to the meter base or cable connectors. A meter base
with pole mounting bracket and meter ring assembly is available from S&C.
Follow these steps to mount the control in the meter base:
STEP 1. Conrm that your meter base socket is wired correctly for this control.
The required socket wiring for a four-jaw plug is shown in Figures 2 and 3 on page
9. The wiring for each type of six-jaw meter base is shown in Figures 4 through 10
on pages 9 through 11. The correct conguration for the control is also indicated
by a label on the back of the control enclosure. A meter base mount control may
also have sensor cable connectors on the bottom of the enclosure. See Figure 11
on page 12 for connector locations.
Installing the Capacitor Control

S&C Instruction Sheet 1023-510 9
Installing the Capacitor Control
Figure 2. Four-jaw meter base socket configuration for capacitor controls with catalog number
suffix -J40.
Figure 3. Four-jaw meter base socket configuration for capacitor controls with catalog number
suffix -J41.
Figure 4. Six-jaw meter base socket configuration for capacitor controls with catalog number
suffix -J60.
Ac line
Open
Ac/sensor neutrals
Close
Neutral sensor
hot
Current sensor hot
Ac line
Open
Ac neutral
Close
Ac line
Open
Ac neutral
Close

10 S&C Instruction Sheet 1023-510
Installing the Capacitor Control
Figure 5. Six-jaw meter base socket configuration for capacitor controls with catalog number
suffix -J61.
Figure 6. Six-jaw meter base socket configuration for capacitor controls with catalog number
suffix -J62.
Figure 7. Six-jaw meter base socket configuration for capacitor controls with catalog number
suffix -J63.
Ac line Open
Ac neutral
Close
Current sensor
neutral
Current sensor
hot
Ac line
Open
Ac neutral
Close
Current sensor
neutral
Current sensor hot
Ac line Open
Ac neutral
Close
Current sensor
neutral
Current sensor
hot

S&C Instruction Sheet 1023-510 11
Installing the Capacitor Control
Figure 8. Six-jaw meter base socket configuration for capacitor controls with catalog number
suffix -J64.
Figure 9. Six-jaw meter base socket configuration for capacitor controls with catalog number
suffix -J65.
Figure 10. Six-jaw meter base socket configuration for capacitor controls with catalog number
suffix -J68.
Ac line Open
Ac neutral & current
sensor neutral
Close
Current sensor
hot (alternate)
Current sensor
hot
Ac line Open
Ac neutral
Close
Not connected
Not connected
Ac neutral
Close
Neutral sensor hot
Ac line
Open
Neutral sensor
return

12 S&C Instruction Sheet 1023-510
STEP 2. Connect ground lug on the bottom of the control.
Use the ground lug on the bottom of the control enclosure to ground the enclosure.
See Figures 11 and 12. The ground lug will accommodate up to #2 copper or
aluminum, solid or stranded wire. Ground impedance must be 25 ohms or less to
properly protect the equipment.
WARNING
The control must be properly grounded. You must read and understand all applicable
grounding codes and requirements for your service area before installing this device.
An ungrounded control may have potentially lethal voltage present.
Figure 11. Ground lug on the bottom of the enclosure.
Neutral current/
neutral voltage
lockout
indicator LED
(optional)
Sensor input
connectors
Ground lug Temperature
sensor
Figure 12. Grounding the IntelliCap Plus enclosure.
Single-phase
voltage
transformer Capacitor
bank switch
Neutral
sensor
Switch close/
open cable
Neutral sensor to
junction box cable
Junction box to
control cable
VT sensing /
power cable
Common neutral
Single-phase
current sensor
Current sensor to
junction box cable
S&C IntelliCap Plus
Automatic Capacitor Control
Cap bank connection
to common neutral
Current sensor
ground
Junction
box
Ground lug
Installing the Capacitor Control

S&C Instruction Sheet 1023-510 13
Installing the Capacitor Control
STEP 3. Plug control into the meter base socket. See Figure 13.
When the control is plugged into an energized meter base, all faceplate LED displays
light momentarily. The LCD display will start to scroll after a few seconds.
Make sure that the OPERATION MODE MANUAL and SCADA CONTROL LOCAL
LED displays are lit. If not, press the applicable CHANGE button.
WARNING
The control must be set to Manual and Local modes to avoid unexpected operation of
the capacitor bank during installation or setup operations. Note that if the control uses
dial-up software, it may still be operated remotely, and could operate unexpectedly.
Figure 13. Side view of capacitor control enclosure and meter base, with a snap ring and crimp lock.
STEP 4. Lock control to meter base.
Use your standard procedure for a locking ring, snap ring, crimp lock, etc., and
lock the control to the meter base.
STEP 5. Go to the “Connecting Sensors” section on page 20.
WARNING
If lightning arresters are installed their ground path must not go through the neutral
current sensor. Connect them to ground on the earth side of the sensor, to protect from
potentially lethal voltages.

14 S&C Instruction Sheet 1023-510
Installing the Capacitor Control
Bracket Mounting Attach the control to the pole with either lag bolts for a wood pole, or metal straps for
a concrete or metal pole. See Figures 14 and 15 on page 15. Then, connect the cable as
described below.
Follow these steps to attach the control to a wood pole:
STEP 1. Use two 1/2-inch through-bolts or lag bolts and at washers if necessary. Drill a
hole for the top bolt or start the top lag screw.
STEP 2. Support the control and install the top bolt to hold the control on the pole, or
hang the control on the top lag screw.
STEP 3. Vertically align the control on the pole and drill the bottom hole. Install the
bottom bolt or lag screw.
STEP 4. Tighten the two bolts or lag screws.
STEP 5. Conrm that the cable from the switch and power source is wired correctly for
the connector on your control.
The wiring options for the connector are shown in Figures 16 through 18 on
page 16. The configuration used in this control is also shown on a label inside the
enclosure. The bracket-mounted control has additional sensor cable connector(s)
mounted on the bottom of the enclosure. See Figure 11 on page 12.
STEP 6. Connect the ground lug on the bottom of the control.
Use the ground lug on the bottom of the control enclosure to ground the enclo-
sure. See Figures 11 and 12 on page 12. The ground lug will accommodate up to
#2 copper or aluminum, solid or stranded wire.
WARNING
The control must be properly grounded. You must read and understand all
applicable grounding codes and requirements for your service area before installing
this device. An ungrounded control may have potentially lethal voltages present.
STEP 7. Connect the cable from the junction box to the connector on the bottom of the
capacitor control.
When an energized cable is connected to the control, all faceplate LED
displays light momentarily. The LCD screen will start to scroll after a few
seconds.
Make sure the OPERATION MODE MANUAL and SCADA CONTROL LOCAL
LED displays are lit. If not, press the applicable CHANGE button.
WARNING
The control must be set to Manual and Local mode to avoid unexpected operation of
the capacitor bank during installation or setup operations. Note that, if the control uses
dial-up software, it may still be operated remotely and may operate unexpectedly.
STEP 8. Go to the “Connecting Sensors” section on page 20.

S&C Instruction Sheet 1023-510 15
Installing the Capacitor Control
Figure 14. Front view of the capacitor control enclosure, showing the mounting holes.
Figure 15. Side view of the capacitor control enclosure, showing the mounting slots.
14.79
(376)
1.00 (25)
9.85
(250)
20.00
(508)
18.00
(457)
5.00
(127)
IntelliCap Plus
10.25
(260)
8.44
(214)
1.50 X .25
(38) (6)
.50
(13)
Upper mounting hole
Lower mounting hole
Dimensions in inches (mm)
Dimensions in inches (mm)

16 S&C Instruction Sheet 1023-510
Installing the Capacitor Control
Figure 16. Bracket mount receptacle wiring configuration, five-pin for capacitor controls
with catalog number suffix -M01, -D11, or -D12.
Not connected
Open
Close
Ac line
Ac neutral
Figure 17. Bracket mount receptacle wiring configuration, seven-pin for capacitor
controls with catalog number suffix -M03, or -D13.
Line current
sensor hot
Neutral current/voltage
sensor hot
Return for line &
neutral sensors
Ac line
Ac neutral &
shield ground
Open
Close
Figure 18. Bracket mount receptacle wiring configuration, three-pin for capacitor
controls with catalog number suffix -M10, -D10, -D11, -D12, or -D13.
Shield Sensor
return
Sensor
hot

S&C Instruction Sheet 1023-510 17
Installing the Capacitor Control
Figure 19.Terminal Block wiring and test point configuration for catalog number suffix -JB1 or -JB2.
Follow these steps to attach the control to a metal or concrete pole:
STEP 1. Pass a stainless-steel strap or clamp through the two upper mounting slots in the
bracket. Pass a second strap through the two lower mounting slots. See Figure 15
on page 15.
STEP 2. Lift the control into position on the pole. Then, support the control while tightening
the upper and lower straps around the pole.
STEP 3. Conrm that the cable from the switch and power source is wired correctly for the
connector on this control. See Figure 19.
A bracket-mounted control may have additional sensor cable connectors
installed on the bottom of the enclosure. The wiring options for bracket-mount
connectors are shown in Figures 16 through 18 on page 16. The configuration
used in the control is also shown on a label on the inside of the enclosure door.
STEP 4. Connect the ground lug on the bottom of the control.
Use the ground lug on the bottom of the control enclosure to ground the enclo-
sure. See Figures 11 and 12 on page 12. The ground lug will accommodate up to
#2 copper or aluminum, solid or stranded wire.
WARNING
The control must be properly grounded. You must read and understand all
applicable grounding codes and requirements for your service area before installing
this device. An ungrounded control may have potentially lethal high voltage present.
STEP 5. Connect the cable from the junction box to the connector on the bottom of the
capacitor control.
When an energized cable is connected to the control, all faceplate LED
displays light momentarily. The LCD screen will start to scroll after a few
seconds.
Make sure the OPERATION MODE MANUAL and SCADA CONTROL LOCAL
LED displays are lit. If not, press the applicable CHANGE button.
WARNING
The control must be set to Manual and Local mode to avoid unexpected operation of
the capacitor bank during installation or setup operations. When the control uses dial-
up software, it may still be operated remotely and may operate unexpectedly.
STEP 6. Go to the “Connecting Sensors” section on page 20.
c
c
c
c

18 S&C Instruction Sheet 1023-510
Installing the Capacitor Control
The IntelliCap Plus control with 0-5 A current/var option control, catalog number
238164-67, is designed for mounting on the surface of a control panel. It has a special
wiring harness that has seven 3-foot (914mm) wires that exit from the bottom of the control.
A shorting block should be connected to this harness and mounted nearby. The shorting
block allows you to safely remove the control without leaving the CT circuits open. See
Table 1 for the harness color code and the individual wires that are labeled on the harness.
Connected to a potential transformer, the PT wires provide voltage sensing and
power to the control and internal relays. Average IntelliCap Plus power consumption is
0.5 watts. Control power is used to wett the Open and Close relay contacts to operate the
capacitor bank switches or the interposing relays.
The IntelliCap Plus relay contacts are rated at 20 A at 250 Vac, 1 HP 120/250 Vac. In
addition they have been tested to operate three Joslyn Vacuum Switches (36 A). If you
need 125 Vdc to operate the capacitor switches, install interposing relays rated for
125 Vdc.
Control power used to wett the Open and Close relays is not fused in the IntelliCap Plus
control, and an external fuse must be installed when necessary. Polarity and phase-angle
corrections can be adjusted with the control software.
Table 1. Catalog Number 238164-67 Var and Neutral Input Wiring.
Catalog number 238164-67 Var and Neutral Input Wiring
Black Station power hot (+)
Blue Close
Red Open
Red CT return (-)
Red CT hot (+)
White PT/ac - neutral
Black PT/ac - line
Wiring for Neutral Input
Orange Neutral sensor hot (+)
White Neutral Ssensor return (-)
Harness Wiring

S&C Instruction Sheet 1023-510 19
Installing the Capacitor Control
The IntelliCap Plus neutral input is referenced to the control case ground. When the
capacitor bank control power is supplied by a transformer with a center-tapped 220-volt or
240-volt output that has the center tap referenced to ground, connect the center tap to the
Ac Neutral input and the high line to the Ac Line input of the IntelliCap Plus control. Use two
auxiliary relays with 120-volt coils and 240-volt contacts rated to meet the requirements of
the capacitor switch, and connect as indicated in Figure 20.
If the control power is supplied from a 220/240-Volt transformer that does not have a
grounded center tap, the transformer can be connected directly across the Ac Line and Ac
Neutral inputs. In this case, the auxiliary relays are not required.
220-Volt Wiring
Figure 20. The 110-Volt IntelliCap Plus control can operate a 220-Volt bank switch.

20 S&C Instruction Sheet 1023-510
Connecting Sensors Some controls have var and/or neutral current or neutral voltage sensing connected in the
meter socket. Other controls use connector(s) on the bottom of the control enclosure or
terminal block J6. See Figure 11 on page 12 and Figure 19 on page 17, respectively.
NOTICE
Do not ground sensor cable shields at the top of the pole. Sensor cable shields should
be grounded only at the control end—to prevent extraneous ground current from
flowing through the cable shields. This rule applies to all S&C connectorized cables.
NOTICE
For neutral current sensing on 4-wire distribution systems, where the starpoint of the
capacitor bank is tied to the neutral and/or ground, you must install the neutral current
sensor between the starpoint and the system neutral and/or ground. See Figure 21.
A phase
Starpoint
To capacitor control
0-10 Vac
B phase
C phase
Neutral
Fuses
Switches
Neutral current sensor
(CT terminated on an
imbedded resistor)
The neutral voltage sensing option allows the capacitor control to monitor and
take action if it detects abnormal levels of voltage on the starpoint of an ungrounded,
wye-connected bank. Use the information provided by the neutral voltage sensor manufac-
turer to design your installation. See Figure 22 on page 21.
Figure 21. Neutral current sensor installation between the starpoint and the neutral.
Installing the Capacitor Control