Service Information Type GV and GW Installation ... · Kyle® Type GW Sectionalizer. 84574KMA ... Response Time ... A minimum of 0.5 A of load current flowing through the

Figure 1.Kyle® Type GW Sectionalizer.

84574KMA

ContentsSafety Information .................................................. 2

Hazard Statement Definitions ............................. 2Safety Instructions .............................................. 2

Product Information ............................................... 3Introduction ......................................................... 3Acceptance and Initial Inspection ........................ 3Handling and Storage .......................................... 3Standards ........................................................... 3Description........................................................... 3

Ratings .................................................................... 4Dimensions and Weights ....................................... 5Operating Controls and Settings .......................... 6

Manual Operating Controls ................................. 6Auxiliary Power .................................................... 6Indicating Devices................................................ 6Settings ............................................................... 7Inrush-Current Restraint ...................................... 8Response Time.................................................... 8

Installation............................................................... 9Oil Level and Dielectric Strength ......................... 9Lifting the Sectionalizer........................................ 9Mounting the Sectionalizer .................................. 9Grounding the Sectionalizer ................................ 9High-Voltage Connections ................................... 11120 Vac Wiring..................................................... 11Internal Wiring......................................................12

Auxiliary Switch......................................................13Operating Instructions ...........................................15

Initial Operation....................................................15Routine Operation................................................15Automatic Return to Zero Count ..........................15One-Count-to-Open .............................................15

CT Protector Board ................................................15Testing .....................................................................16

Test Circuit and Equipment ..................................16Pre-Test Procedure..............................................16Test Procedures...................................................16Post-Test Procedures ..........................................19

March 2002 • Supersedes 12/92Printed in USA

Service Information

SectionalizersType GV and GWInstallation Instructions S270-20-3Applicable to serial numbers above 2265 for Type GV and 4803 for Type GW

NOTICE: This bulletin is also applicable to Kyle productserial numbers beginning with the prefix CP57.

Type GV and GW Installation Instructions

2

The instructions in this manual are not intended as asubstitute for proper training or adequate experience inthe safe operation of the equipment described. Onlycompetent technicians, who are familiar with this equip-ment 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-voltagesafe 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 equip-ment such as flash clothing, safety glasses, faceshield, hard hat, rubber gloves, hotstick, etc.

Following is important safety information. For safe instal-lation and operation of this equipment, be sure to readand understand all cautions and warnings.

Safety InstructionsFollowing are general caution and warning statementsthat apply to this equipment. Additional statements, relat-ed to specific tasks and procedures, are located through-out the manual.

SAFETY INFORMATION

WARNING: This equipment is not intended toprotect human life. Follow all locally approved

procedures and safety practices when installing oroperating this equipment. Failure to comply may resultin death, severe personal injury and equipment damage.

G102.1

!

DANGER: Hazardous voltage. Contact withhazardous voltage will cause death or severe

personal injury. Follow all locally approved safety pro-cedures when working around high- and low- voltagelines and equipment. G103.3

!

WARNING: Before installing, operating, main-taining, or testing this equipment, carefully read

and understand the contents of this manual. Improperoperation, handling or maintenance can result indeath, severe personal injury, and equipment damage.

G101.0

!

SAFETY FOR LIFECooper Power Systems products meet or exceed all applicable industry standards relating to product safety. We activelypromote safe practices in the use and maintenance of our products through our service literature, instructional trainingprograms, 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 workingaround high voltage lines and equipment and support our “Safety For Life” mission.

!SAFETYFOR LIFE

!SAFETYFOR LIFE

This manual may contain four types of hazard statements:

DANGER: Indicates an imminently haz-ardous situation which, if not avoided, will

result in death or serious injury.

WARNING: Indicates a potentially haz-ardous situation which, if not avoided, could

result in death or serious injury.

CAUTION: Indicates a potentially haz-ardous situation which, if not avoided, may

result in minor or moderate injury.

CAUTION: Indicates a potentially hazardous situ-ation which, if not avoided, may result in equip-ment damage only.

!

!

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Hazard Statement Definitions

WARNING: Power distribution equipment mustbe properly selected for the intended application.

It must be installed and serviced by competent per-sonnel who have been trained and understand propersafety procedures. These instructions are written forsuch personnel and are not a substitute for adequatetraining and experience in safety procedures. Failureto properly select, install, or maintain power distribu-tion equipment can result in death, severe personalinjury, and equipment damage. G122.2

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!SAFETYFOR LIFE

IntroductionService Information S270-20-3 provides installation andoperation instructions for the Kyle Type GV and GWSectionalizers. Before installing and operating this sec-tionalizer, carefully read and understand the contents ofthis manual.

Read this Manual FirstRead and understand the contents of this manual andfollow all locally approved procedures and safety prac-tices before installing or operating this equipment.

Additional InformationThese instructions can not cover all details or variationsin the equipment, procedures, or processes describednor provide directions for meeting every possible contin-gency during installation, operation, or maintenance. Foradditional information, please contact your CooperPower Systems representative.

Acceptance and InitialInspectionEach sectionalizer is completely assembled, tested,inspected, adjusted, and filled to the correct level withinsulating oil at the factory. It is in good condition whenaccepted by the carrier for shipment.

Upon receipt, inspect the shipping container for signs ofdamage. Unpack the sectionalizer and inspect it thor-oughly for damage incurred during shipment. If damageis discovered, file a claim with the carrier immediately.

Check for oil leakage, and tighten all bolts that may havebeen loosened during shipment, especially the boltsattaching the head to the tank.

Handling and StorageBe careful during handling and storage of the sectional-izer to minimize the possibility of damage. If the section-alizer is to be stored for any length of time prior to instal-lation, provide a clean, dry storage area. Locate the sec-tionalizer so as to minimize the possibility of mechanicaldamage. In particular, protect the bushings and keep theoperator cabinet closed to protect the electronic controlcomponents.

StandardsKyle sectionalizers are designed and tested in accor-dance with ANSI standard C37.63 where applicable.

Quality StandardsISO 9001:2000 Certified Quality Management System

DescriptionThe sectionalizer is a self-contained, circuit-openingdevice used in conjunction with source-side protectivedevices such as reclosers or circuit breakers, to auto-matically isolate faulted sections of electrical distributionsystems. The sectionalizer senses current flow above apreset level, and, when the source-side protectivedevice opens to de-energize the circuit, the sectionalizercounts the overcurrent interruption. Depending upon thecoordination scheme, the sectionalizer will open duringthe first, second, and third open interval of the fault inter-rupting device to isolate permanent faults and confineoutages to smaller sections of line.

The sectionalizer does not interrupt fault current but canbe closed into a faulted line. It opens during the openinterval of the backup device. For this reason, it mustalways be used in series with a fault-interrupting backupprotective reclosing device. Also, it will reset counts thatdo not reach the counts-to-open setting within theselected reset time due to clearing of temporary faults.

A minimum of 0.5 A of load current flowing through thesectionalizer will block the generation of a count pulse.This count-restraint feature prevents the sectionalizerfrom counting overcurrents interrupted by down-linedevices.

The sectionalizers are also equipped with an inrush-currentrestraint feature which distinguishes between inrush cur-rents and fault currents. If it is determined that the over-current through the sectionalizer is inrush current, thephase and ground current levels of the sectionalizer areblocked for a duration of 3 seconds upon current detection.

3

S270-20-3

PRODUCT INFORMATION

Tables 1 and 2 show rating information for the Types GVand GW sectionalizers.


4

Table 1Basic Sectionalizer Ratings

Type GV Type GW

Nominal Voltage (kV) . . . . . . . . . . . . . . . . . . . . . 14.4 34.5

Rated Maximum Voltage (kV) . . . . . . . . . . . . . . . 15.5 38.0

Impulse Withstand 1.2 x 5.0 microsecond waveBIL (kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 150

60 Hz withstandDry, 1 minute (kV) . . . . . . . . . . . . . . . . . . . . 50 70Wet, 10 seconds (kV) . . . . . . . . . . . . . . . . . 45 60

Continuous Current Rating (A) . . . . . . . . . . . . . . 400 400

Rated symmetrical interrupting current (A rms) . . . . . . . . . . . . . 880 880

Rated making current, asymmetrical (A rms) . . . . . . . . . . . . . . . . . 20000 15000

Short-time ratings (A rms)10-seconds symmetrical . . . . . . . . . . . . . . . 4000 35001-second symmetrical . . . . . . . . . . . . . . . . . 12500 10000

Momentary maximum, asymmetrical (A rms) . . . . . . . . . . . . . . . . . 20000 15000

Creepage distance, standard bushing mm (in) . . . . . . . . . . . . . . 280 (11) 431 (17)

Table 2Operating Data

Phase-minimum-actuating current (A) . . . . . . . . 16, 24, 40, 56, 80, 112, 160, 224, 256, 296, 320, 448, 480, 640

Ground-minimum-actuating current (A) . . . . . . . . 3.5, 7, 16, 20, 28, 40, 56, 80, 112, 160, 224, 320, 448, BLOCK

Number of counts to open . . . . . . . 1, 2, 3

Count reset (seconds) . . . . . . . . . . 15, 30, 60, 90, 120, 180

RATINGS

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Figures 2 and 3 show essential dimensional informationfor Types GV and GW sectionalizers, along with theirweights and oil capacities.

Note: All dimensions are approximate and are given in mm(inches).

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S270-20-3

89 (3.5)

38 (1.5)

641(25.25)

929 (36.5)

1372 (54)

Tapped Holes (12)for 1/2–13 Bolts

292(11.5)

233(9.25)

1051 (41.5)

Venteddipstick

435(17)

292(11.5)

448(17.5)

197(7.75)

Terminal ConnectorsNo. 6 solid–350 MCM

305(12)

1203(47.25)

435(17)

329(13)

562(22)Ground Connector

No. 8–No.2

Figure 2.Type GW Sectionalizer.

254(10)

203(8)

Terminal ConnectorsNo. 6 solid–350 MCM

GroundConnector

No. 8–No. 2

838(33)

648 (25.5)

1016 (40)

365 (14.5)

197(7.75)

657 (25.75)

254(10)

254(10)

70(2.75)

32 (1.25)

Vented dipstick

Liftinglug

244(9.75)

64(2.5)

260(10.25)

324(12.75)

64(2.5)

473(18.75)

365 (14.5)311

(12.25)

152 (6)

Hole for bolt16 mm (5/8")

362(14.25)

448 (17.5)

Figure 3.Type GV Sectionalizer.

Weight with oil 350 kg (770 lb)

Oil Capacity 160 L (42 gal)

Weight with oil 213 kg (470 lb)

Oil Capacity 72 L (19 gal)

DIMENSIONS AND WEIGHT

Manual Operating ControlsThe operating controls for the sectionalizer are locatedon the underside of the operator mechanism housing, asshown in Figure 4.

Manual OpeningThe hookstick-operated, manual opening pullring tripsopen the sectionalizer with one pull of the yellow pullring.

One-Count-To-Open LeverThe one-count-to-open lever provides the capability ofopening the sectionalizer on the first overcurrent interrup-tion count. It provides for added safety during downlinehot-line work without disturbing the normal counts-to-open setting of the sectionalizer. The hookstick-operatedlever locks into position when pulled down, and must bemanually reset to restore normal counts-to-lockout.

Manual ClosingThe hookstick-operated, manual closing pullring closesthe sectionalizer when the gray pullring is pulled downapproximately 10 to 12 times. The pullring manuallycharges the closing springs and overtoggles the springsto initiate the closing. (When the sectionalizer closes,the resistance on the pullring is eliminated.) This is theonly means of closing the sectionalizer.

Auxiliary PowerAuxiliary power (120 Vac, 25 VA, min.) is required for thecabinet heater and/or potential charging of the tripcapacitor. The input receptacle is located on the undersideof the operator cabinet (Figure 4). A mating connectorplug is also provided with the unit.

Indicating DevicesA contact position indicator and an operations counterare located under the sleet hood of the operator cabinet.

The yellow contact position indicator is pinned to themain operating shaft of the sectionalizer to indicate theOPEN and CLOSED condition of the main contacts.

The operations counter gives a visual indication of thecumulative number of openings of the unit.


6

Figure 4.Operating controls on the underside of the operator cabinet.

84575KMA

Provision forinstalling auxiliaryswitch wiringreceptacles

ManualOpeningPullring

120 Vac inputreceptacle

(mating plugalso furnished)

Manual closingpullring

One-count-to-open Lever

OPERATING CONTROLS AND SETTINGS

IMPORTANT: The potential charging board also includesa voltage restraint feature which prevents the unit fromcounting overcurrent interruptions unless the auxiliaryvoltage is also interrupted. Therefore, the auxiliary powermust be obtained from the load side of the backupprotective device so that the board is energized onlywhen the backup is closed. Failure to follow this pre-caution will prevent proper operation of the sectionalizer.

WARNING: Do not rely on the open position ofthe yellow operating handle; it does not ensure

that the line has been de-energized. Always establisha visible disconnect. Failure to follow proper safetypractices can result in contact with high voltage, whichwill cause death or severe personal injury. G116.0

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WARNING: Always use a hotstick when work-ing with this equipment. Failure to do so could

result in contact with high voltage, which will causedeath or severe personal injury. G108.1

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Settings

The operating characteristics are preset to customerspecifications and tested prior to shipment from the fac-tory. However, if the sectionalizer is relocated or thecoordination scheme is modified, the operating charac-teristics can be changed by the user. The settingsshould be checked before the unit is put into service.All settings are located on the printed circuit board in theoperator mechanism cabinet and are accessible whenthe cabinet cover is removed. See Figure 6. To accessthe settings on an in-service sectionalizer, follow thisprocedure to remove the sectionalizer from service.

1. Close all three bypass switches (see Figure 5).

2. Pull down the yellow operating handle with a hot-stick. The yellow operating handle is located underthe sleet hood (see Figures 3 and 4).

3. Open the source and load disconnect switches (seeFigure 5).

4. Remove the cabinet cover.

Minimum Actuating CurrentThe minimum actuating current levels for both phaseand ground are determined by the selection of the prop-er plug-in resistors. (Normally, these settings are approx-imately 80% of the minimum trip settings of the backupprotective device.)

NOTE: If the backup device is not equipped for ground faultsensing and tripping, the ground current sensing cir-cuits of the sectionalizer can be deactivated by using ashorting resistor labeled BLOCK.

Phase current resistors are identified with the phasesymbol (ø) and the actuating current value in amperes.Catalog numbers for the available phase current resis-tors are listed in Table 3.

Ground current resistors are identified with the ground sym-bol ( ) and the actuating current value in amperes.Catalog numbers for the available ground current resis-tors are listed in Table 4.

The minimum actuating current of the sectionalizer forboth phase and ground can be changed by merelychanging the appropriate plug-in resistor.

Label Value Resistance (Ω) Catalog(A) Minimum Maximum Number

16 264 270 KA176GV1624 172 176 KA176GV2440 94.3 96.3 KA176GV4056 66.3 67.7 KA176GV5680 47 48 KA176GV80112 32.6 33.4 KA176GV11260 22.9 23.5 KA176GV160

224 16.3 16.7 KA176GV224256 13.8 14.2 KA176GV256296 11.9 12.3 KA176GV296320 11.1 11.5 KA176GV320448 8.1 8.3 KA176GV448480 7.4 7.6 KA176GV480640 5.5 5.7 KA176GV640

TABLE 3Minimum Actuating Resistor (Phase)

Table 4Minimum Actuating Resistor (Ground)

Label Value Resistance (Ω) Catalog(A) Minimum Maximum Number3.5 6.91 k 7.05 k KA177GV3.57 1.168 k 1.192 k KA177GV7

16 379.0 387.0 KA177GV1620 298.0 304.0 KA177GV2028 200.0 204.0 KA177GV2840 135.6 138.4 KA177GV4056 94.3 96.3 KA177GV5680 66.3 67.7 KA177GV80112 47.0 48.0 KA177GV112160 32.6 33.4 KA177GV160224 22.9 23.5 KA177GV224320 15.8 16.2 KA177GV320448 11.2 11.4 KA177GV448

BLOCK 0 0.1 KA177GVBLO

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S270-20-3

CAUTION: Equipment Damage. The sectional-izer must be bypassed and disconnected prior to

changing minimum actuating resistor settings. Failureto comply will cause circuit board damage and maycause misoperation (unintentional operation) of thesectionalizer. T277.0

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SurgeArrestor

SE

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Bypass Switches

DisconnectSwitches

SurgeArrester

DisconnectSwitches

OperatorCabinet

120 Vac Input

Figure 5.Main Wiring Connections.

Counts-to-OpenThe counts-to-open setting is determined by the positionof the COUNTS-TO-OPEN SELECTOR switch. Switchpositions 1, 2, and 3 correspond to 1, 2, or 3 counts toopen. Normally, this setting is one less than the numberof operations to lockout of the backup protective device.To change the number of counts-to-open setting, merelychange the position of the rotary switch.

Count ResetThe reset setting is determined by the position of theCOUNT RESET switch. Reset times of 15, 30, 60, 90,120, and 180 seconds are available. This feature resetsto zero any accumulated counts whenever currentthrough the sectionalizer flows without interruption forlonger than the time programmed.

The reset feature will operate with any current flow fromminimum load (0.5 A) to values below phase or groundpickup levels.

Inrush-Current RestraintThe inrush-current restraint feature blocks the phaseand ground actuating levels for three seconds after cur-rent flow through the sectionalizer is restored and theovercurrent has been determined to be inrush current.

The three second time interval allows for system inrushparameters to stabilize prior to allowing the sensitivity ofthe sectionalizer to return to its programmed state.

Response TimeFor backfed motor contribution and unsymmetrical clear-ing of upline faults, a response time is built into the sec-tionalizer control to eliminate unwanted counting ofthese situations. Upon detection of any current abovethe phase or ground actuating setting, the current mustexceed the response-time characteristics as illustratedin Figure 7. Total clearing time of reclosers and breakersmust exceed the response-time characteristic of the sec-tionalizer.


8

0.1

.08

.06

.01

.02

.03

.04

.05

50 60 80 100

200

300

400

500

600

800

1000

2000

CURRENT (percent of minimum actuating current)

TIM

E (

sec)

Figure 7.Maximum Response-Time Characteristics.

Figure 6.Operating characteristics of the sectionalizer are pro-grammed on the printed circuit board in the operatorcabinet.

020061KMA

Counts-to-openselector

Countresetselector

TestPointC

Test PointD

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Oil Level and Dielectric Strength

Make sure the oil in the tank is at the proper level bychecking the vented dipstick in the head casting.Replenish any loss with new, dry transformer oil. Referto Figures 2 and 3.

If the switch has been stored for any length of time or isbeing relocated, check the dielectric strength of the oil inaccordance with ASTM-approved testing procedures.Physical properties of the oil used in Kyle® distributionswitchgear is found in Reference Data R280-90-1.

1. In new equipment, the oil must have a minimumdielectric strength of 26 kV. If less than 26 kV, filterthe oil to restore its dielectric strength to an accept-able level.

2. If the equipment has been in service and is beingrelocated, the minimum dielectric strength of the oilmust be at least 22 kV. If less than 22 kV, or if the oilis contaminated with carbon or sludge, replace theoil.

3. Check that the actual settings agree with the section-alizer nameplate and are correct for the plannedinstallation.

Lifting the Sectionalizer

Follow all approved safety practices when making hitch-es and lifting the equipment. Lift the load smoothly, anddo not allow the load to shift.

This unit has two lifting lugs. Both lugs must be usedwhen lifting. Maximum strength is attained with a verti-cal lift attached to the lugs. Use a spreader bar with afixed attachment point for the hook at the load center.

If a sling is used, it must have a fixed attachment pointat the load center. Rig the load so that the sling height isequal to or greater than the distance between liftinglugs. See Figure 8.

Mounting the SectionalizerFigures 9 and 10 show installation using Kyle mountingframes. If other mounting means are used, support theGV sectionalizer at the four 5/8 inch bolt holes in themounting rails on the tank. The GW sectionalizer is sup-ported at the twelve 1/2-13 threaded holes tapped intothe sides of the head casting.

Grounding the Sectionalizer

Make ground connections to the sectionalizer. Refer toFigures 2 and 3.

9

S270-20-3

SlingHeight

DistanceBetween

Lugs

Figure 8.Lifting the sectionalizer.

INSTALLATION

WARNING: Do not operate this equipment outof oil. Oil is the electrical insulating medium with-

in this equipment; operating out of oil will result ininternal flashovers that will damage the equipmentand can cause death or severe personal injury. G104.2

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CAUTION: This equipment relies on oil to pro-vide electrical insulation between components.

The dielectric strength of the oil must be checked on aregular basis, as part of the routine maintenanceinspection, to ensure that it is at or above minimumdielectric requirements. Use of this equipment withinsulating oil that does not meet minimum require-ments can result in internal flashovers that will dam-age the equipment and can cause personal injury. G107.2

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CAUTION: Follow all locally approved safety prac-tices when lifting and mounting the equipment. Usethe lifting lugs provided. Lift the unit smoothly and donot allow the unit to shift. Improper lifting can result inequipment damage. G106.2

WARNING: Hazardous Voltage. Solidly groundall equipment. Failure to comply can result in

death, severe personal injury, and equipment damage.T223.2

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670(26.5)

362(14.25)

654(25.75)

762(30")

711(28")

5/8" Bolts (4)(not furnished)

Holes for3/4" bolts

Adjustable for 3 1/4 x 4 1/4 to 4 x 5 crossarmsand 1/2 to 4" channels.

KA19H3Crossarm Hanger

KA116H3BroadsidePole Hanger

324 mm(12.75")

330 mm(13")

473 mm(18.5")

378 mm(14.5")

432 mm(17")

244 mm(9.5")

383 mm(15.25")

324 mm(12.75")

699 mm(27.5")

622 mm(24.5")

489 mm(19.25")

508 mm(20")

244 mm(9.75") 383 mm

(15")

Figure 10.Mounting hardware for Type GV sectionalizer.

622 mm(24.5")

978 mm(38.5")

292 mm(11.5")

330 mm(13")

546 mm(21.5")

32 mm(1.25")

1346 mm(53")

537 mm(21.25")

289 mm(11.5")

289 mm(11.5")

Figure 9.Type GW sectionalizer in the KA146W3 pole-mounting hanger.

Grounding Lug(two 2/0–250 MCM)

Lifting Holes

Mounting Holesfor 3/4” Bolts(Bolts not furnished)

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High-Voltage ConnectionsIt is desirable to provide the sectionalizer with switchesand protection as shown in Figure 11. Surge protectionon both sides of the sectionalizer is recommended.However, if provided on only one side, it should be onthe source side. In substations, surge protection shouldbe provided on the load side of the sectionalizer.

The universal clamp-type terminals used for main line con-nections accept No. 2 solid through 350 mcm copper oraluminum cables.

The parallel connector grounding clamp on the tank ofthe Type GV and the cover of the GW sectionalizers willaccept No. 8 through No. 2 stranded wire.

120 Vac WiringA 120 Vac source voltage is required if the mechanismcabinet heater and the potential charger for the tripcapacitor are to be energized.

The line voltage is connected to pins B and D of thesource-voltage plug shown in Figure 12.

Internal WiringA connection diagram for the GV and GW sectionalizersis shown in Figures 12 and13.

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S270-20-3

SurgeArrestor

SE

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ALI

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Bypass Switches

DisconnectSwitches

SurgeArrester

DisconnectSwitches

OperatorCabinet

120 Vac Input

Figure 11.Main Wiring Connections.

A

B C

D

E

Figure 12.125 Vac Input Connector Plug.

Keyway Socket Insert

Socket E

Max wire size No. 12 AWG

Rubber Grommetaccommodates3/8” to 1/2” dia. cable


12

Figure 13.Internal Connections Diagram.

1

23

4

7

8

14

15

16

17

18

19

20

22

21

BLK

RED

RED

KEY

RED

YEL

WHT

BLKBLK

ORG

BRO

BLK

BLU

GRN

BLU

+

–

NC

NOC

BLU

BLU

BLK

GR

NB

LK

BLK

One-CountSwitch

G

RED

YEL

G

C

B

AA

C

B

C.T.Protector

NC

NOC

CountResetSwitch

ZenarDiode Zenar

Diode

AB

C

D

E

F

1

PotentialCharger

Board

ORG

YEL

GRNWHT

BLK

WHT

243

Heater

D

B

BLK

WHT120 VacInput Receptacle

WHT

BLK

BLKWHT

WHT

BushingCurrent

Transfomer

C

A

EF

G

HRED

BLK

BLK

YEL

BLK

C

A

EF

G

HRED

RED

WHT

BLK

YEL

BLK

WHT

BLK

YEL

BLK

BLK

BLK

WHT

WHT

WHT

øC

øA

øB

Surge Arrester

BLK

Low-EnergyTripper

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!SAFETYFOR LIFE

Auxiliary Switch (KA46GV3)The auxiliary switch, mounted to the top of the operatorcabinet, in a weather-proof housing, is used for relayingor interlocking schemes and remote contact indication.

A three-stage auxiliary switch is provided. Each stageconsists of two independent contact assemblies witheither “a” (normally open) or “b” (normally closed) con-tacts which can be easily changed in the field. A dataplate attached to the switch cover shows the switcharrangement. Related switch contact positions areshown in Table 5.

The switch is permanently wired to two multipin recepta-cles in the bottom of the operator cabinet. Table 6 showsthe pin arrangement of the the mating plug shown inFigure 14.

The switch contacts are insulated for 600 V and have acontinuous current rating of 10 A. Their interrupting rat-ings are shown in Table 7.

Switching positions can be changed from “a” or “b” oper-ation by repositioning the cams inside each switch sec-tion. To change any cam position, complete the following:

1. Remove the auxiliary switch cover.

2. Detach the switch from the switch link by removingthe groove pin and C-rings.

3. Remove the machine screws attaching the assemblyto the cabinet.

4. With the switch removed, unfasten the two hex nutsand lockwashers from the long machine screws thathold the switch sections together.

5. Starting with the rear switch section, lift the cams offthe operating shaft, replacing the cams in one of thepositions shown in Figure 15.

6. Reposition the switch sections together, reassemblethe auxiliary switch, and remount the switch on thesectionalizer.

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S270-20-3

When Sectionalizer Contacts Are Closed OpenAuxiliary “a” contacts are Closed Open

Auxiliary “b” contacts are Open Closed

Table 5Related Switch Contact Positions

H

A

B

CD

E

FG

Figure 14.Auxiliary Switch Connector Plug.

Rubber grommet accommodates 0.750” to 0.812”O.D. Cable No. 12 AWG Max Conductor size

Pin GKeyway

Pin insert

Table 6Switch Leads to Receptacle Terminals

Switch Stages Switch Receptacle SwitchTerminal Pin Contact

1 A“b”

Stage 1 2 B

3 C“a” Rear

4 D

5 E Receptacle“b”

Stage 2 6 F

7 G“a”

8 H

9 A“b”

Stage 3 10 B Front

11 C Receptacle“a”

12 D

Table 7Interrupting Ratings - Switch Contacts

Inductive Non-Inductive Inductive Non-InductiveVolts ac ac dc dc

(A) (A) (A) (A)24 dc — — 15 2048 dc — — 7.5 10120 ac 60 80 — —125 dc — — 1.5 2240 ac 30 60 — —250 dc — — 0.45 0.5


14

CONTACTSECTION

END PLATEAND GASKET

SQUARESHAFT

CAMS

OPENPOSITION

CLOSEDPOSITION

45°

When assembling be sure that the roll pin hole and punch mark on the shaft are in vertical plane with the punch mark in the end plate (as shown).

TERMINALS3, 7, 11, 15 CAMS

TERMINALS1, 5, 9, 13



CONTACTS

SQUARESHAFT

CAM POSITION NO. 1Both contacts closed.

CAM POSITION NO. 2Both contacts open.

CAM POSITION NO. 3One contact open and onecontact closed.

Figure 15.Cam positions inside the Auxiliary Switch.

15

!SAFETYFOR LIFE

Initial OperationWith the sectionalizer connected into the system and thesource-side high-voltage lines energized, the sectional-izer can be placed into service. Follow approved localpractices, which may involve closing the line disconnectswitches, closing the sectionalizer, and then opening thebypass circuit.

Routine OperationUnder normal operating conditions, the sectionalizercounts overcurrent interruptions of the backup protectivedevice and automatically opens if the counts registeredexceed the control setting. Once open, the sectionalizerwill remain open until manually closed. In addition, thesectionalizer can be opened manually by one operationof the yellow pullring of the manual trip rod.

To close the sectionalizer, after either a manual or auto-matic trip, the gray manual-closing pullring must be oper-ated approximately 10 to 12 times. (When the sectional-izer closes, the resistance on the pullring is eliminated.)This is the only means of closing the sectionalizer.

Automatic Return to Zero CountA switch operated by the tripping linkage of the section-alizer mechanism will automatically erase any accumu-lated counts every time the sectionalizer opens either man-ually or automatically.

One-Count-to-OpenAs an added safety precaution during downline hot-linework, the sectionalizer can be programmed for one-count-to-open without opening the operator mechanismhousing and disturbing the normal operating settings.The one-count-to-open lever overrides the COUNTS-TO-OPEN SELECTOR switch to provide the capabilityof opening the sectionalizer on the first overcurrent inter-ruption. The hookstick-operated lever locks into positionwhen pulled down and must be manually reset.

CT PROTECTOR BOARD

Should the control be removed, the CT protector board,shown in Figure 16, will automatically protect the currentsensing CTs. This is done by limiting the open-circuitvoltages to non-destructive levels.

15

S270-20-3

OPERATING INSTRUCTIONS

Figure 16.Control Circuitry.

84577KMA

CT Protector BoardVoltage

Charging Board

Heater


procedures and safety practices when installing oroperating this equipment. Failure to comply can resultin death, severe personal injury, and equipment dam-age. G102.1

!

WARNING: Do not rely on the open position ofthe yellow operating handle; it does not ensure

that the line has been de-energized. Always establisha visible disconnect. Failure to follow proper safetypractices can result in contact with high voltage, whichwill cause death or severe personal injury. G116.0

!

WARNING: Always use a hotstick when work-ing with this equipment. Failure to do so could

result in contact with high voltage, which will causedeath or severe personal injury. G108.1

!

Type GV and GW sectionalizers are carefully tested atthe factory prior to shipment. Well-equipped test facili-ties, a detailed testing procedure, and trained test per-sonnel assure that the unit will operate according to pub-lished data. Permanent records are kept of each sec-tionalizer’s test performance.

Each sectionalizer leaves the factory ready for installa-tion. Preinstallation testing is not necessary. However,should verification of operation prior to installation bedesired, the these procedures should be used.

Test Circuit EquipmentA suggested test circuit is shown in Figure 17. In thistest setup, the test current is obtained by back-feeding a500:5 A current transformer (T2, located in the primaryloop of one phase of the sectionalizer) from anadjustable 120 Vac source. The ammeter scales (A)should be selected to accommodate the appropriaterange of test currents.

Pre-Test ProcedureBefore performing any of the test procedures that follow,make sure the 120 Vac power to the heater and voltagecharging board (Figure 15) is disconnected to disablethe voltage restraint feature. The sectionalizer will notcount as long as the voltage restraint feature (part of thevoltage charging board) is energized.

Test ProceduresWhile performing the following tests, monitor the conti-nuity between test points C and D on the circuit board.(see Figure 6). If no continuity exists between either setof test points upon closing of the sectionalizer, apply 6 Aof load current by closing switch S1 for 3.5 seconds.Once continuity has been restored, open S1 and pro-ceed with the test procedures.

Minimum Actuating CurrentThe minimum actuating current can be verified by test-ing at the ± 10 percent values of the phase and groundactuating current ratings.

For example, the minimum actuating resistor rated at 80 Ais tested at 72 A (no count) and at 88 A (count regis-tered).


16

T1– VARIABLE AUTO TRANSFORMERT2– 500:5 CURRENT TRANSFORMERS1– SPST TOGGLE SWITCHS2– SPST PUSHBUTTON SWITCHR1– DROPPING RESISTOR, 2 kΩ-10 WA – AMMETER

A

T2

120 V 60 Hz

T1

S2

S1R

AC Source

Figure 17.Test Circuit Schematic.

TESTING


procedures and safety practices when installing oroperating this equipment. Failure to comply can resultin death, severe personal injury, and equipment dam-age. G102.1

!

WARNING: The switchgear and high voltagetransformer must be in a test cage or similar pro-

tective device to prevent accidental contact with thehigh voltage parts. Solidly ground all equipment.Failure to comply can result in death, severe personalinjury, and equipment damage. T221.3

!

Phase Minimum Actuating CurrentWhen checking the phase minimum actuating current,the ground fault sensing portion of the sectionalizermust be disabled. Testing an individual phase withoutdisabling the ground sensing circuits will cause a falsecount.

The following procedure is used:

1. Jumper the ground actuating current resistor with ashort lead to disable the ground sensing circuit.

2. Jumper terminals P and D together.

3. Program the sectionalizer for one-count-to-open bysetting the COUNTS-TO-OPEN SELECTOR switchto 1.

4. Close the sectionalizer by operating the close pull-ring the required number of times.

5. With the test circuit connected to phase A of the sec-tionalizer and S1 open, hold S2 closed and slowlyraise the test current from zero to the appropriatevalue shown in Column A of Table 8. Hold S2 closedfor at least three seconds.

6. Release S2 to simulate a backup opening. The sec-tionalizer should not open.

7. Close S2 and adjust the test current to the appropri-ate value shown in Column B of Table 8.

8. Release S2 to simulate a backup opening. The sec-tionalizer should count the overcurrent interruptionand open.

9. Repeat steps 3 through 7 for phases B and C.

10. Remove the jumper from terminals P and D.

11. Remove the jumper from across the ground actuat-ing current resistor upon completion of this portion ofthe test.

Ground Minimum Actuating CurrentTo prevent the possibility of a false count, the phasesensing portion of the sectionalizer control circuit shouldbe disabled when the ground minimum actuating currentis being checked. The following procedure is used:

1. Jumper the phase actuating current resistor with ashort lead to disable the phase sensing circuit.


3. Check that the sectionalizer control is set for one-count-to-open.

4. Close the sectionalizer by operating the close pull-ring the required number of times.

5. With the test circuit connected to phase A of the sec-tionalizer and S1 open, hold S2 closed and slowlyraise the test current from zero to the appropriatevalues shown in Column A of Table 8. Hold S2closed for at least three seconds.

6. Release S2 and simulate a backup opening. Thesectionalizer should not open.

7. Close S2 and adjust the test current to the appro-priate value shown in Column B of Table 8.

8. Release S2 to simulate a backup opening. The sec-tionalizer should count the overcurrent interruptionand open.

9. Repeat steps 3 through 7 for Phases B and C.


11. Remove the jumper from across the phase actuat-ing current resistor.

17

S270-20-3!SAFETYFOR LIFE

Table 8Test Circuit Operating Limits for Actuating Current Settings

Column A Column BActuating Sectionalizer Must Sectionalizer Must

Current Setting Not Count Below Count At(A) (A) (A)

3.5 3 47 6.3 7.716 14.4 17.620 18 2224 21.6 26.428 25.2 30.840 36 4456 50.4 61.680 72 88112 101 124160 144 176224 201 247256 230 282296 266 326320 288 352448 403 483480 432 528640 576 704

Count RestraintThe count restraint feature prevents erroneous counts ofovercurrents interrupted by downline protective devicesby blocking the counting operation as long as a mini-mum of 0.5 A of uninterrupted line current flows throughthe sectionalizer.

The operation of the count restraint can be verified bysuperimposing an interruptible overcurrent on a constantminimum line current. The sectionalizer will not count oropen on the interruption of the overcurrent as long asthe minimum line current is not interrupted. To check thecount restraint feature, proceed as follows:



3. Check that the sectionalizer control is set for one-count-to-open.

4. Close the sectionalizer by operating the close pullringthe required number of times.

5. With the test circuit connected to phase A of the sec-tionalizer and S1 closed (to simulate a constant loadcurrent of approximately 6 A), hold S2 closed and raisethe test current to slightly above the appropriate valuesshown in Column B of Table 8. Hold S2 closed for atleast three seconds

6. Release S2 to simulate a downline device clearing theovercurrent. The sectionalizer should not open verify-ing the operation of the count restraint feature.

7. Open S1 and again close and adjust S2 to simulate abackup device clearing the fault. This time the section-alizer should count the overcurrent interruption andopen.


Voltage RestraintWhen energized at 120 Vac, the voltage charging boardprovides fast charging times for the trip energy storagecapacitors. It also acts as a voltage restraint; the sectional-izer will not count an overcurrent interruption of the protec-tive device unless the voltage at the control is also inter-rupted. To check the voltage restraint feature, proceed asfollows:

1. Jumper the ground actuating resistor with a short leadto disable the ground sensing circuit.


3. Program the sectionalizer for one-count-to-open.

4. Close the sectionalizer.

5. Connect 120 Vac across pins B and D of the 120 Vacinput receptacle.

6. With the test circuit connected to Phase A of the sec-tionalizer and S1 open, Close S2 and raise the currentslightly above the appropriate value shown in ColumnB of Table 8. Hold S2 closed for at least three sec-onds.

7. Release S2 to simulate a downline device clearing theovercurrent. The sectionalizer should not open.

8. Disconnect the 120 Vac from the input receptacle.

9. Again close and release S2. The sectionalizer shouldopen.


Number of Counts-to-OpenThe number of counts-to-open can be verified by inter-rupting, the preset number of times, an overcurrentthrough the sectionalizer. For example, with the controlset for three counts, the sectionalizer will open upon thethird overcurrent interruption. Proceed as follows:



3. Program the sectionalizer for three counts-to-open bysetting the COUNTS-TO-OPEN SELECTOR switch to 3.

4. Close the sectionalizer by operating the close pullringthe required number of times.

5. With the test circuit connected to phase A of the sec-tionalizer and S1 open, close S2 and raise the test cur-rent to slightly above the appropriate value shown inColumn B of Table 8. Hold S2 closed for at least threeseconds.

6. Open and close S2 a number of times. The sectionaliz-er should open upon the third opening of S2.

7. To verify the two-counts-to-open setting, set theCOUNTS-TO-OPEN SELECTOR switch to 2 andrepeat steps 3 through 5. The sectionalizer shouldopen upon the second opening of S2.



18

Count ResetThe count reset feature resets the sectionalizer count tozero whenever current below the actuating level flowsthrough the sectionalizer for longer than the pro-grammed reset time without interruption. The reset timesettings have a tolerance of ±10 percent.

It can be verified by interrupting an overcurrent flowthrough the sectionalizer one time less than the counts-to-open setting, then allowing load current to flow forperiods just under and just over the reset setting. Thesectionalizer should open if the overcurrent for the finalcount is interrupted within the reset time period (counthas reset to zero). The following procedures may beused to verify the count reset:

1. Jumper the ground actuating current resistor with ashort lead to disable the ground-sensing circuit.

2. Program the sectionalizer control for two counts-to-open and set the COUNT RESET SELECTOR to 15seconds.



5. With test circuit connected to phase A of the section-alizer and S1 open, close S2 and raise the test cur-rent to slightly above the appropriate value shown inColumn B of Table 8. Hold S2 closed for at leastthree seconds.

6. Release S2 to simulate a backup protective deviceclearing the overcurrent. The sectionalizer will regis-ter a count.

7. Close S1 for 13.5 seconds.

8. Momentarily close and then release switch S2. Thesectionalizer should open, verifying that the countreset has not been activated.

9. Reclose the sectionalizer and then close and releaseS2 once to register one overcurrent interruptioncount.

10. Close S1 for slightly more than 16.5 seconds.

11. Momentarily close and release switch S2. The sec-tionalizer should not open, verifying that the countreset has been activated and the first count hasbeen erased.

12. Again, close and release S2. The sectionalizershould open.

13. Remove the jumper form terminals P and D.

Inrush-Current RestraintThe inrush-current restraint feature distinguishesbetween fault currents and inrush currents. For fault cur-rent interruptions, the sectionalizer counts and opensnormally. For an inrush-current condition, the phase andground minimum actuating current detection is blockedfor three seconds to prevent counting the inrush current.

The three-second time interval allows for system inrushparameters to stabilize prior to allowing the sensitivity ofthe sectionalizer to return to its programmed state.

The operation of the inrush-current restraint can be veri-fied by simulating a fault condition (the overcurrent ispreceded by an overcurrent interruption) and an inrushcondition (the overcurrent is preceded by a load currentinterruption).

The following procedure can be used to verify theinrush-current restraint feature.


2. Set the COUNTS TO OPEN SELECTOR switch to 1.

3. Manually close the sectionalizer.

4. With the test circuit connected to phase A of the sec-tionalizer and S1 open, hold S2 closed and raise thetest current to slightly below the appropriate valueshown in Column A of Table 8.

5. Release S2 to simulate a backup opening with onlyload current flowing through the sectionalizer whencurrent was interrupted. The sectionalizer shouldnot open.

6. Close S2 and in no more than three secondsadjust the test current to just below twice the appro-priate value shown in Column A of Table 8 to simu-late an inrush condition. Release S2. The sectional-izer should not open, verifying that the inrushrestraint feature has been activated.

7. Reset the inrush restraint as follows:

A. Short test terminals D and P together.

B. Close S1 closed for 3.5 seconds.

C. Open S1 and remove short from Test Terminals Dand P.

8. Close S2 and raise the test current to slightly abovethe appropriate value shown in Column B of Table 8.

9. Release S2 to simulate a backup opening with faultcurrent flowing through the sectionalizer when cur-rent was interrupted. The sectionalizer should open.


11. Repeat step 9 to simulate a fault condition.

12. Release S2. The sectionalizer should open verifyingthat the inrush restraint has not been activated.

Post-Test ProceduresAfter testing has been completed, make sure that thecontrol settings are programmed to the operating param-eters as originally specified.

19

S270-20-3!SAFETYFOR LIFE

1045 Hickory StreetPewaukee, WI 53072 USAwww.cooperpower.com

© 2005 Cooper Power Systems or its affiliates.Kyle® is a registered trademark of Cooper Power Systems or its affiliates..

KA2048-101 Rev: 01

!SAFETYFOR LIFE

KDL6/05

Documents

Service Information Type GV and GW Installation ... · Kyle® Type GW Sectionalizer. 84574KMA ... Response Time ... A minimum of 0.5 A of load current flowing through the