S&C PureWave AVC User guide

S&C ELECTRIC COMPANY
Specialists in Electric Power Switching and Protection
Instruction Sheet 656-500
September 20, 2004 ©2004
Supersedes Instruction Sheet 656-500 dated 2-24-03
S&C PureWave AVC™Adaptive VAR Compensator
600 V
Instructions for Installation and Operation
TABLE OF CONTENTS
Section Page Section Page
INTRODUCTION
Qualified Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Read this Instruction Sheet . . . . . . . . . . . . . . . . . . . . . . 2
Retain this Instruction Sheet . . . . . . . . . . . . . . . . . . . . . 2
Proper Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY INFORMATION
Understanding Safety-Alert Messages . . . . . . . . . . . . . 3
Following Safety Instructions . . . . . . . . . . . . . . . . . . . . 3
Replacement Instructions and Labels . . . . . . . . . . . . . 3
Location of Safety Labels . . . . . . . . . . . . . . . . . . . . . . . 4
SECURITY PROVISIONS
Enclosure Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Access Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
INSPECTION AND HANDLING
Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
DIMENSIONS AND WEIGHTS
Section Dimensions and Weights . . . . . . . . . . . . . . . . . 8
INSTALLATION
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Access to Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
CABLE CONNECTIONS
Conduit Requirements . . . . . . . . . . . . . . . . . . . . . . . . . .15
Output Connections . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Completing the Installation . . . . . . . . . . . . . . . . . . . . . 18
SYSTEM OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
MAIN COMPONENTS
Capacitor Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Power-Electronic Switches . . . . . . . . . . . . . . . . . . . . .20
Microprocessor Controller . . . . . . . . . . . . . . . . . . . . . .20
OPERATING PROCEDURE
Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Off-Line Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Shut Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
PROTECTIVE DEVICES
Capacitor Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Inrush-Limiting Reactors . . . . . . . . . . . . . . . . . . . . . . .23
Cooling of SCR/Diode Valves . . . . . . . . . . . . . . . . . . . .23
Heat-Sink Temperature Sensors . . . . . . . . . . . . . . . . . 23
Surge Arresters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Frequency Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

656-500 2
INTRODUCTION
ÇWARNING
The equipment covered by this publication must be installed, oper-
ated, and maintained by qualified persons who are knowledgeable
in the installation, operation, and maintenance of underground
electric power distribution equipment along with the associated
hazards. A qualified person is one who is trained and competent in:
•The skills and techniques necessary to distinguish exposed live
parts from non-live 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, per-
sonal protective equipment, 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.
Qualified Persons
Read this Instruction Sheet Thoroughly and carefully read this instruction sheet before installing
or operating your S&C PureWave AVC. Familiarize yourself with
“SAFETY INFORMATION” on pages 3 and 4.
Retain this Instruction Sheet This instruction sheet is a permanent part of your S&C PureWave
AVC. Designate a location where you can easily retrieve and refer to
this publication.
Warranty The standard warranty contained in S&C’s standard conditions of
sale, as set forth in Price Sheet 150, is applicable to the S&C Pure-
Wave AVC covered in this instruction sheet.
ÇCAUTION
The equipment in this publication must be selected for a specific
application. The application must be within the ratings furnished
for the equipment. Ratings for this device are listed on a ratings
label at the front of the unit.
Proper Application

3 656-500
SAFETY INFORMATION
Understanding Safety-Alert
Messages
There are several types of safety-alert messages which may appear
throughout this instruction sheet as well as on labels attached to the
PureWave AVC. Familiarize yourself with these types of messages
and the importance of the various signal words, as explained below.
Following Safety Instructions If you do not understand any portion of this instruction sheet and
need assistance, contact your nearest S&C Sales Office or S&C Autho-
rized Distributor. Their telephone numbers are listed on S&C’s web-
site www.sandc.com. Or call S&C Headquarters at [phone]; in
Canada, call S&C Electric Canada Ltd. at [phone].
Replacement Instructions and
Labels
If you need additional copies of this instruction sheet, contact your
nearest S&C Sales Office, S&C Authorized Distributor, S&C Head-
quarters, 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 Distrib-
utor, S&C Headquarters, or S&C Electric Canada Ltd.
ÇDANGER
“DANGER” identifies the most serious and immediate hazards
which will likely result in serious personal injury or death if
instructions, including recommended precautions, are not
followed.
ÇWARNING
“WARNING” identifies hazards or unsafe practices which can result
in serious personal injury or death if instructions, including recom-
mended precautions, are not followed.
ÇCAUTION
“CAUTION” identifies hazards or unsafe practices which can result
in minor personal injury or product or property damage if instruc-
tions, 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 fol-
lowed.
NOTICE
Thoroughly and carefully read this in-
struction sheet before installing your
S&C PureWave AVC.

656-500 4
SAFETY INFORMATION
Location of Safety Labels
Reorder Information for Safety Labels
Location Safety-Alert Message Description Part Number
AÇDANGER High Voltage! Keep Out DD260020B001
BÇCAUTION This Equipment is Powered By Three Separate Sources DD260021B001
CÇCAUTION Capacitors Inside Enclosure DD260022B001
B
B
A
A
B
B
C

5 656-500
SECURITY PROVISIONS
Enclosure Security The PureWave AVC enclosure incorporates a number of features to
minimize hazards to qualified persons and to the general public.
Enclosures are fabricated from 11-gauge steel sheet and are free-
standing and self-supporting. There are no externally removable side
sheets, rear sheets, or roofs to invite removal. Access is through wide
bulkhead-type doors having concealed cam-type, high-strength
latches that seal the doors shut. Each door has a minimum of three
concealed, extra-heavy-duty hinges with stainless-steel pins. All doors
are padlockable and have top and side flanges with double 90-degree
bends which overlap the door openings, adding rigidity and discour-
aging tampering.
Access Control Access to internal components, controls, and meters is controlled by
padlockable doors. Baffles and screens cover all vents, discouraging
wire poking. Since this unit may be located in areas accessible to the
general public as well as authorized but unqualified persons, care
must be taken to alert such persons to the presence of high voltage
within the enclosure. Therefore, do not remove any of the “Danger!
High Voltage! Keep Out” signs that have been attached to the unit. Any
organization altering or removing these hazard-alerting signs must
assume full responsibility for such actions. Take particular care to be
sure that all doors and handles are securely padlocked before leaving
the unit unattended, even momentarily.

656-500 6
INSPECTION AND HANDLING
Packing Each section of the PureWave AVC is shipped fastened to a wood
skid. A plastic liner has been inserted underneath the section to pre-
vent water or debris from entering the bottom during shipping or han-
dling. The sections should be left on their skids with the liners intact
until just prior to installation on the pad.
Inspection Examine the shipment for external evidence of damage as soon after
receipt as possible, preferably before removal from the carrier's con-
veyance. Check the bill of lading to insure that all shipping skids,
crates, and containers listed thereon are present.
If there is visible loss and/or damage:
1. Notify the delivering carrier immediately.
2. Ask for a carrier inspection.
3. Note condition of shipment on all copies of the delivery receipt.
4. File a claim with the carrier.
If concealed damaged is discovered:
1. Notify the delivering carrier within 15 days of receipt of shipment.
2. Ask for a carrier inspection.
3. File a claim with the carrier.
Also notify S&C Electric Company in all instances of loss and/or
damage.

7 656-500
Handling
The dimensions and weight of each section of the PureWave AVC are
listed in Table 1. Each section can be lifted using an overhead crane
or a forklift.
If an overhead crane is to be used:
1. Use 8-foot or longer hoist slings of equal length to prevent dam-
aging the enclosure during lifting.
2. Arrange the hoist slings so as to distribute the lifting forces
equally between the eyebolts.
3. If hoist slings or chains have been provided—match the letter
tag on each sling hook to the corresponding letter tag on each
eye-bolt on the roof of the section. See Figures 1 and 2.
4. Make sure that the lifting hooks are completely engaged in the
eyebolts before lifting the enclosure. Do not cross the slings or
chains.
5. Avoid sudden starts or stops.
If a forklift is to be used, engage the forks fully across the span of
the wooden pallet mounted to the base of the section.
If the PureWave AVC is to be transported through a building, place
roller dollies under each corner of the section
ÇWARNING
When handling a PureWave AVC with an overhead hoist, observe
standard lifting practices as well as the general instructions below.
Failure to follow these precautions can result in serious per-
sonal injury or equipment damage.
INSPECTION AND HANDLING
Figure 1. Sling hooks with letter tags. Figure 2. Section ready to lift.

656-500 8
DIMENSIONS AND WEIGHTS
Section Dimensions and Weights
System Dimensions
L D  H (in.)11
11
Number of
Sections
Approximate System Weight (lbs.) Total System
Weight (lbs.)
KVAR Voltage Stages Control
Section
Capacitor
Section 1
Capacitor
Section 2
500 480 3 87 37 121 1 6,000 — — 6,000
600 3 87 37 121 1 5,500 — — 5,500
625 480 3 87 37 121 1 6,500 — — 6,500
600 3 87 37 121 1 6,000 — — 6,000
750 480 3 87 37 121 1 7,500 — — 7,500
600 3 87 37 121 1 7,000 — — 7,000
1000 480 3 87 37 121 1 8,500 — — 8,500
600 3 87 37 121 1 8,000 — — 8,000
1250
480 3 174 37 121 2 7,000 2,500 — 9,500
4 174 37 121 2 7,000 2,500 — 9,500
600 3 87 37 121 1 9,000 — — 9,000
4 87 37 121 1 9,000 — — 9,000
1500
480 3 174 37 121 2 7,500 3,000 — 10,500
4 174 37 121 2 7,500 3,000 — 10,500
600 3 87 37 121 1 9,500 — — 9,500
4 174 37 121 2 7,000 2,500 — 9,500
2000
480 3 174 37 121 2 8,000 3,500 — 11,500
4 174 37 121 2 8,000 3,500 — 11,500
600 3 174 37 121 2 7,500 3,000 — 10,500
4 174 37 121 2 7,500 3,000 — 10,500
2500
480 3 261 37 121 3 8,500 4,000 3,500 16,000
4 261 37 121 3 8,500 4,000 3,500 16,000
600 3 174 37 121 2 8,000 3,500 — 11,500
4 174 37 121 2 8,000 3,500 — 11,500
3000
480 3 261 37 121 3 9,000 4,000 3,500 16,500
4 261 37 121 3 9,000 4,000 3,500 16,500
600 3 174 37 121 2 8,500 3,500 — 12,000
4 174 37 121 2 8,500 3,500 — 12,000
4000
480 3 261 37 121 3 9,500 4,000 3,500 17,000
4 261 37 121 3 9,500 4,000 3,500 17,000
600 3 261 37 121 3 9,000 4,000 3,000 16,000
4 261 37 121 3 9,000 4,000 3,000 16,000
5000
480 3 261 37 121 3 10,000 4,000 4,000 18,000
4 261 37 121 3 10,000 4,000 4,000 18,000
600 3 261 37 121 3 9,500 4,000 3,500 17,000
4 261 37 121 3 9,500 4,000 3,500 17,000
6000 600 3 261 37 121 3 10,000 4,000 4,000 18,000
4 261 37 121 3 10,000 4,000 4,000 18,000
1Height dimension includes outdoor fan. Height dimension with indoor fan is 108 inches. Height dimension with fan housing removed is 102 inches.

9 656-500
Storage If possible, the PureWave AVC should be immediately installed in its
permanent location. In outdoor applications, the space heaters should
be energized at once, even if the device itself is not to be energized
until later. If the PureWave AVC cannot be installed immediately, stor-
age in a clean, dry room is recommended, especially for a unit designed
for indoor installation. The PureWave AVC should be protected against
condensation, harmful gases, cement dust, and physical damage. If nec-
essary, the device can be temporarily stored outdoors prior to being
installed and put into service. Shelter it with a tent-like covering which
will allow adequate ventilation but prevent entry of rain, snow, and
contaminants through openings in the device. If the PureWave AVC is
to be stored outdoors for more than two weeks, connect and energize
the space heaters to minimize condensation.
INSTALLATION
Indoor fan
housing shown
Capacitor section 2
(if required)
Capacitor section 1
(if required)
Control
section
Figure 3. Section placement.

656-500 10
INSTALLATION
Figure 4. Outdoor fan housing (upper left). Fan power connection (upper right). Fans removed for shipping (lower left). Indoor
fan housing (lower right).
Placement 1. Note the positions of the control section and each of the capacitor sections. See
Figure 3. Determine the section having working clearances most affected by adjacent
walls or structures . . . this section should be placed first.
2. Unbolt each section from its skid and lift it into position on the pad or floor, observing
the precautions discussed under “Handling” on page 7.
3. Fan housings may have been removed for shipping. Reinstall the fan housings using the
hardware provided. See Figure 4.