rInstructions for V201, V211320 Ampere Vacuum ContactorNon-reversing or Reversing

I.L. 16999AModel A or D

Formerly Type SJM

Fig. 2 Left hand portion of V211 Reversing Contactor

placing the Type DPC air-break contactor. Flat wash-ers should be used on bolts entering slotted holes orkeyholes.

Fig: 1 V201 Non-reversing Contactor

THE CONTACTOR

V201 contactors are designed for the control of in-ductive or non-inductive loads at voltages between 120and 1500, AC. The units are suitable for mounting oneither steel or insulated panels. All parts are frontremovable. Contactors should be protected againstshort circuits by branch circuit protective devices select-ed in accordance with the National Electrical Code.

This industrial type control is designed to be installed,operated, and maintained by adequately trained work-men. These instructions do not cover all details, varia-tions, or combinations of the equipment, its storage,delivery, installation, check out, safe operation, or main-tenance. Care must be exercised to comply with local,state, and national regulations, as well as safety prac-tices for this class of equipment.

Mount each contactor with four 5/16 x 18 or 1/4 x 20bolts or three 1/4 x 20 bolts if the V201 contactor is re-

CONTROLLER RATINGS—3 POLE CONTACTORS

3 Phase Horsepower At

200V 230V 380V 460V 575V 79SV 1500V100 125 200 250 300 400 800

MAXIMUM CURRENT RATINGS (RMS)Continuous

CarryingEnclosed

Motor, transformeror Capacitor

Make or Break

ContinuousCarrying

Open3000A320A350A

Two-pole contactors have the same current ratings as3 pole devices but are not suitable for controlling 3 phasemotors.

Six .17 S - IBTAP LINETERMINALS0 ?0

« 5 20 1INF.COIL AUX CONTACT *A

6o'• OI 0 Cf -o B&Q

r .

Notes; inA 8>

IT 'XI

* TWO DUAL COTPUH AIfif -ILIA/Vr CONTACTS LOCATin ON DOTH sioes ofCONTACTOfl WWFN USEO9 CO<L IfcHMIMAlSKX'-AT-ED ON 801H Stf>F$ OFCCWTACTOn

*TOTLA .tilMSi2»B

IFte o Ol

° T?lo ^o

^o

* JP 51 P Q Ao oId ofit

\ \r.ix io'An U>AO-EBMINALSft II1 6f>6 TS

5 C6 1OAO16 3H

Mouni with 5/16 x 18 or 1 /4 x 20 bolls

Fig. 3 Dimension Drawings (Dim. in inches)

1

V201, V211, 320 AMPERE VACUUM CONTACTOR I.L. 16999A

AUXILIARY CONTACTS — L56 (RATED B600) REPLACEMENT COIL:ORDER BY PART NUMBERVOLTAGE, AND FREQUENCY

Two mounting brackets for L56 auxiliary contacts areprovided on each contactor. Auxiliary contacts themselvesmust be ordered separately. An L56D with one normallyopen pole may be used as the holding circuit auxiliary.A maximum of four auxiliary units can be installed in therecesses of each non-reversing contactor (three in eachreversing contactor). They mount by means of a springclip which snaps Into locations provided in the contactor.To remove the L56,disengage the top springclip by press-ing on the extended tab, and withdraw the unit.

v

AC OPERATING COILSVoltage110-120220-240

Part Number7874A09G027874A09G04

Freq.AnyAny

MECHANICAL INTERLOCK

The Type M33-5 mechanical interlock is used whena pair of contactors must be mechanically protectedagainst the closing of one when the other is alreadyclosed. The two contactors are mounted side-by-side(horizontal configuration), The Type M 33-5 mechani-cal interlock occupies one recess in each contactor.

L56 AUXILIARY CONTACTSContact Type Catalog No.1 Normally Closed1 Normally Open2 Normally Closed2 Normally Open1 Normally Open and 1 Normally Closed

L56EL56DL56CL56BL56 TERMINATION MEANS

L56 CONTACT RATINGS (B600)Lugs for power circuit conductors are not supplied

with the V201 and V211 contactors. Regardless of thetermination means used, maintain the minimum clear-ance shown in Table I for the application involved. Useadequate insulating material as needed. One recom-mended terminal for conductor size #0 through 500MCM is llsco No. D-64.

AC Volts24-120

120-600

Make Break30A 3A

3600VA 360VA

COIL

The operating coil has a "figure-eight” shape andis really two coils in series, with a connection to theircommon point. Both coils are encapsulated in oneenvironment-immune coil shell, which also contains afull-wave silicon diode bridge. Although AC is connect-ed directly to terminals A and B on the coil shell, themagnet excitation is unfiltered DC. The magnet will notchatter as AC magnets sometimes do, but at less thanrated volts it may hum slightly. A normally-closed TypeL63 auxiliary contact, set to open slightly before the ar-mature fully closes, Is connected to terminals C andD on the coil shell. When adjusted correctly, this con-tact allows a relatively high current through the pick-up winding, and as the contactor closes, the contactinserts the holding winding, which reduces the coil cur-rent to a low value sufficient to hold the magnet closedwithout overheating. No external resistors are required.

TABLE I- MINIMUM CLEARANCESMaintain minimum clearance between live parts

and grounded parts and between live parts of oppositepolarity.

System VoltageNot greater than 600 voltsNot greater than 1000 voltsNot greater than 1500 volts

Minimum Clearance,375 Inches.550 inches,700 Inches

TABLE II- ACCESSORIES

Fuse Block Kits — Meet requirements olNational Electric Code (NEC) concerningcommon control fusing.

DescriptionContactor mounted Fuse Holder forone 600 volt Bussmann KTK Fuse

FKR 1 Panel mounted Fuse Holder for twoClass CC (Bussmann KTKR) Fuses *

* Use when available fault current exceeds 10,000amperes

Order Qty.F56 2

AC COIL DATA (TYPICAL VALUES)Volts Inrush VA Sealed VA Sealed Watts

110-120220-240

500 25 25600 26 26

2

I.L. 16999AV201, V211, 320 AMPERE VACUUM CONTACTOR

derside of the lower bottle nut on each pole. This over-travel gap should be no less than .050 inch when thecontactor is new. If less, refer to CONTACT WEAR AL-LOWANCE. Disconnect separate power source beforeproceeding.

While the contactor is open, attempt to pull the arma-ture forward. The armature should not move because itshould already be firmly against the plastic main frame.If it does move, refer to KICKOUT SPRING AD-JUSTMENT.

GENERALThe V201 contactor has its main contacts sealed inside

ceramic tubes from which all air has been evacuated, i.e.,the contacts are in vacuum. No arcboxes are required,because any arc formed between opening contacts in avacuum has no ionized air to sustain it. The arc simplystops when the current goes through zero as it alternatesat line frequency. The arc usually does not survive beyondthe first half cycle after the contacts begin to separate.The ceramic tube with the moving and stationary contactsenclosed is called a vacuum interrupter or a bottle, andthere is one such bottle for each pole of the contactor.A two-pole contactor has two vacuum bottles, and a three-pole contactor has three vacuum bottles. A metal bellows(like a small, circular accordian) allows the moving con-tact to be closed and pulled open from the outside withoutletting air into the vacuum chamber of the bottle. Both thebellows and the metal-to-ceramic seals of modern bottleshave been improved to the point that loss of vacuum isno longer cause for undue concern.

The moving contacts are driven by a molded plasticcrossbar supported by two pre-lubricated ball bearingsthat are clamped in alignment for long life and free motion.

The contacts in an unmounted bottle (vacuum interrup-ter) are normally-closed, because the outside air pressurepushes against the flexible bellows. For contactor duty,the contacts must be “normally-open” when the operat-ing magnet is not energized. Therefore, the contacts ofthe vacuum bottles must be held apart mechanicallyagainst the air pressure when used in a contactor. In thecontactor, all of the bottles are held open by a single kick-out spring in the rear of the contactor. The kickout springpulls against the moving armature and crossbar and there-by forces the bottles into the open position. In the openposition, the crossbar is pulling the moving contacts tohold them open.

The contactor is intended to be mounted with its mount-ing plate vertical and the moving stem of the vacuum bot-tles aimed down. However, mounting position is notcritical. If an unusual position is required, it is wise to checkthe pick-up voltage on a bench before installation, withthe contactor oriented as it will ultimately be installed. Thekickout spring can be adjusted as described under KICK-OUT SPRING ADJUSTMENT, if required to obtain the cor-rect pick-up voltage.

CHECK-OUT, INSULATION LEVELAfter installation, and before energizing the contactor

for the first time, measure and record the insulationresistance between poles and from each pole to ground.It is not practical to specify an absolute value for this read-ing since it is dependent on other connected apparatus,and conditions of service. However, any unusual low read-ing or sudden reduction in this reading after the contac-tor has been in service indicates a possible source oftrouble, and the cause should be determined and correct-ed before restoring power.CHECK-OUT, VACUUM INTERRUPTERS

The dielectric strength of the interrupters should bechecked before the contactor is energized for the first timeand regularly thereafter to detect any deterioration in thedielectric strength of the contact gap. A good interrupterwill withstand a 5.5KV, 50 or 60 hertz test across a 0.090inch contact gap, which is the normal new gap.

When a vacuum bottle is tested with voltages over 5000volts across its open gap, there is some possibility ofgenerating X-rays. Test time should be minimized, andpersonnel should not be closer than 10 feet. This is aprecaution until such time as the possible hazard is bet-ter understood and standards are published.

Periodic dielectric tests across open contacts are desira-ble since under certain operating conditions the contac-tor may perform satisfactorily even though one vacuuminterrupter becomes defective and should be replaced.Dielectric tests should be made with the contactor in thesame position it has when operating.

The interval between periodic tests depends on thenumber of operations per day, environmental factors, andexperience. It is a matter of operator judgement, andphilosophy of preventive maintenance.

CHECK-OUT, MECHANICALMake sure all power circuits are deenergized and iso-

lated. The contactor can be checked inits cabinetor out-side. A mechanical interlock must be checked installed,to make certain that it functions properly.

If the contactor is checked in its cabinet, make certainthat the contactor coil is electrically isolated, to preventfeedback into a control transformer that could behazardous.

Connect a separate power source of correct AC voltageto the coil of the contactor. Operate appropriate pushbut-tons to close and open the contactor. If the contactor doesnot close fully or does not drop out fully, refer to MAG-NET OPERATING RANGE.

While the contactor is closed, observe the overtravelgap between the pivot plates on the crossbar and the un-

CONTACT FORCEA vacuum contactor is affected by atmospheric pres-

sure on the bellows of the vacuum bottles. Up to an alti-tude of 3300 feet, the contactor is designed to toleratenormal variations in barometric pressure. If the contactoris to be operated over 3300 feet above sea level, the con-tact force should be increased by adding shims (Part No.7874A17H01) to each bottle stud between the shunt andhex nut holding the shunt. The shims must not be be-tween the shunt and the stem of the bottle. See centerview of Fig.5 There are six shims attached to one flangeof the mounting plate for possible use if required. Applythe shims per Table III.

3

V201, V211, 320 AMPERE VACUUM CONTACTOR I.L. 16999A

If for some reason a coil must be changed, proceed asoutlined below, refering to Fig. 5.1. De-energize all circuits as previously specified.2. Disconnect the leads to the coil terminals, noting theirposition for later reconnecting.3.Disconnect the line and load leads from the contactor

terminals.4. Remove four 1A x 20 screws holding the frame sub-assembly to the mounting base.5. Lift the line side of the frame subassembly away from

the mounting base until two dowels (D) are clear oftheir holes. The frame subassembly will automatical-ly move under pressure from the kickout system untilthe kickout bar reaches the end of its slots In themounting base. The frame subassembly is then freeto be moved outward away from the coil and putelsewhere.

6. The coil is then accessible. Remove the two mountingscrews (M) to free the coil.7. Install replacement coil and replace mounting screws.8. Place the frame subassembly onto the mounting base

so that the two posts extending from the crossbar gothrough the oblong slots in the base and into thenotches in the kickout bar. Push the frame subassem-bly a short distance along the surface of the mount-ing plate toward the kickout bar until the dowels (D)slip into the dowel holes. Replace the four mountingscrews(S).Make sure that the coll leads to the L63auxiliary contact are not pinched under the framefeet.

9. Reconnect coil and recheck contactor for correct ad-justment per this leaflet. By hand, jiggle the ends ofthe kickout bar (K) to make sure it is seated onto theposts from the crossbar.

10. Reconnect fine and load cables.AUXILIARY CONTACT ADJUSTMENT

The nominal .34 gap show for the L63auxiliary contact(normally-closed) in the left upper portion of Fig. 5 is im-portant. If the gap is too big, the “hold” winding of theoperator coil will not be inserted as the contactor closes,and the pick-up winding will burn out, because the pick-up winding is only intermittently rated. If the gap is toosmall, the hold winding will be inserted too soon, reduc-ing the force to “hold” before the contactor is closed, andproducinganoscillation like adoorbell. Ina particular con-tactor, the .34 gap may need slight adjustment to avoidthese problems. The key is not themeasurement, but theperformance of the magnet.TheL56 auxiliary contacts are not as critical. In the openposition, their plungers may rest lightly against the in oper-ating arm, or may have a small clearance.However, neither L63 nor L56 plungers should bottomsolidly in the closed contactor position, as discussed un-der MAGNET OPERATING RANGE. If required, the aux-iliaries can be adjusted by resetting their mountingbrackets in their slotted holes. Adjust the L63 by loosen-ing the two slotted hexagonal washer head screws thathold the L63 mounting bracket, repositioning and tight-ening. These bracket mounting screws are accessiblefrom the top side of the contactor and are recognized bythe slotted holes under their heads.

TABLE 111 — ALTITUDE ADJUSTMENT SHIMSAltitude

0 to 3300 ft .2800 to 4300 ftaeoo to 5300 ft.4800 to 6300 ft.

Quantity of Shims Required per BottleNoneOneTwo

Use extra wide commercialwasher (.060 thick)

iAdditional shims may be ordered as Part No. 7874A17H01MAINTENANCE

Establish a maintenance program as soon as the con-tactor is installed and put into operation. After the con-tactor has been inspected a number of times at monthlyintervals, and the condition noted,Ihe frequency of inspec-tion can be increased or decreased to suit the conditionsfound, depending upon the severity of the contactor duty.It is a matter of operator judgement.This industrial type control is designed to be installed,

operated, and maintained by adequately trained workmen.These instructions do not cover all details, variations, orcombinations of the equipment, its storage, delivery, in-stallation, check out, safe operation,or maintenance.Caremust be exercised to comply with local, state, and nationalregulations, as well as safety practices for this class ofequipment.Allwork on this contactor should be done with themaincircuit disconnect device open. Also, disconnect powerfrom any other external circuits. Discharge any hazardouscapacitors.Gross loss of vacuum is highly unlikely, but it can bechecked easily. With the contactor open, pull downwardon the bottle nuts, one pole at a time, using an effort ofabout 20 pounds. If the bottle nuts, (see Fig. 5 and Fig.6) move easily away from their pivot, the vacuum has prob-ably failed and the bottle must be replaced.It isalso unlikely, but possible, tohave a very slight leakthat does not change the bottle force appreciably, butwhich might seriously damage the ability of the bottle tointerrupt. In this regard, it must be remembered that ina three phase ungrounded circuit, it is possible for any

two good interrupters to successfully Interrupt the circuiteven if a third interrupter is weak. But this condition shouldnot be allowed to continue. It can be detected only by anelectrical test. See CHECK-OUT, VACUUM INTER-RUPTERS.WARNING: All work on this contactor should be donewith the main disconnect device open. As with anycontactor of this voltage, there Is danger of electro-cution and/or severe burns. Make certain that poweris off.CHANGING OPERATING COIL

The operatingcoil has apick-up winding which is Inter-mittently rated. It may burn out in only minutes if continu-ously energized at rate voltage because the L63 auxiliarycontact does not open correctly.

The coil contains its own rectifier to convert the appliedAC into unfiltered full-wave rectified DC. When the coilis at rated voltage, the magnet will be silent. At reducedvoltage, some slight hum may be heard. However themagnet must not chatter.

4

V201, V211, 320 AMPERE VACUUM CONTACTOR I.L. 16999A

described in this leaflet, and it should not need to be ad-justed, However, when the contactor is in the de-energized, open position, the crossbar should be solidlyagainst the frame, so that it cannot move any further openeven when pulled. If it can be moved, the kickout springmust be stretched to hold the crossbar firmly against theframe. Refer to Figure 4. Loosen the lock nuts and tight-en the adjusting screws alternately (to keep the spring oncenterline) until the force from the spring holds the cross-bar properly open. Lock the two lock nuts again.

CONTACT WEAR ALLOWANCEContact material vaporizes from the contact faces dur-

ing every interruption and condenses inside the bottle.ThisIs normal,and isprovided for by overtravel, or wearallowance. When the contactor Is fully closed, there is agap underneath the lower bottle nut and the pivot plate.See Fig. 5. As the contacts wear, this gap decreases.When any gap goes below .020 In., all the bottles shouldbe replaced. Use the .020 in. thick fork-shaped overtrav-el gauge supplied for this measurement, Part No.5259C11H02.CAUTION: The easiest way to close the contactor Isto energize the coll. If the coll Is energized for this orother maintenance, use adequate care to guardagainst electrical shock.MAGNET OPERATING RANGE

When properly adjusted as described in previous sec-tions, the contactor should operate within the rangesshown in Table IV.

oo oo oo

oTABLE IV — OPERATING RANGESLock

Pfck-Up-To-Seal Drop-Out-To-FullOpen

Voltage

NutsRated Coil

Voltage Voltage AdjustingScrew

1 1

KickoutSpring

11

BelowBelow AboveAbove

1096120 50 75

u150240 192 20100

If the magnet chatters, look for mechanical interferencethat prevents the magnet from sealing. If there is no in-terference, then the magnet itself may be misaligned. Themagnet gap can be seen from the left and right sides withthe help of a flashlight. A screwdriver inserted into oneof the long slots (Y-Fig. 5) can be used as a lever to puta corrective set into the mounting plate around the mag-net. It should not be necessary to do this unless the con-tactor has been damaged and it can be seen that thearmature does not fit against the magnet. A poor magnetto armature fit usually produces a high dropout voltageand/or chatter.

Mechanical interference can be produced by various in-correct adjustments. Two specific points to check are:• A. Armature travel incorrect, causing the contact springs

to be compressed into a solid, non-resilient “tube”that stops the crossbar rigidly. Refer to WeslinghouseService for assistance.

B. The auxiliary contact mounting brackets are misad-justed, so that a contact plunger bottoms solidly be-fore the magnet seals. When the contactor is fullysealed closed, there should still be a small amountof travel remaining for the plungers.See AUXILAIRYCONTACT ADJUSTMENT.

nm LT

Fig. 4 Kickout Spring

VACUUM BOTTLE REPLACEMENTIf it becomes necessary to replace the vacuum bottles,

proceed as follows:O. Obtain replacement bottle sub-assemblies, keeping

in mind that (1) all bottles on any contactor must bethe identical part/style number, and (2) all bottles onany contactor must be replaced at the same time.See Table V.

1. Deenergize the contactor circuits. Remove theframe subassembly as described under CHANGINGOPERATING COIL.KICKOUT SPRING ADJUSTMENT

The kickout spring is not disturbed by any maintenance

5

I.L 16999AV201, V211, 320 AMPERE VACUUM CONTACTOR

the contact spring on the bottle side of the crossbararm. At the same time, position terminal (T) into placeso that the molded ledge is captured between clamp(P) and terminal (T). Make sure that the notches oneach side of (P) are fitted over the correspondingprojections on the molded ledge. Tighten two screws(R) with an Alien wrench inserted through the holeson top of terminal (T). There must be clearance be-tween the bottle and the ends of the screws (R). If not,install spacer washers under the heads of screws (R).

TABLE V - REPLACEMENT CONTACTS

All vacuum interrupters (bottles) in any onecontactor should be replaced as a set. Order ap-propriate quantity.

JPart No.Single Vacuum interrupter Assembly9968D12G019968012G02

Model A (w/ 5/10 x 18 x V/Q in. bolt)Model B (w/M8 1.25 x 30 mm bolt)

VACUUM BOTTLE REPLACEMENT (CONT.)

2. Unbolt the rear shunt ends by removing fastener (N)behind the bottom terminal straps. Refer to Fig. 5.

Note: On first production (N) is a bolt. Later unitshave a removable nut at (N), in which case, removethe nut and slide the shunt end off of the stud.

12. Check that the bottle stud (Fig. 5) does not rub on thesides or back of its slot in the crossbar arm. If the studrubs on the rear, it may be necessary to remove thesubassembly and reshape the shunt. If the stud rubson the side of the slot, loosen bolt (H) with an Allenwrench inserted through the terminal hole, positionthe bottle to suit, then retighten bolt (H).

3. Loosen the bottle nuts on the moving stems, usinga screwdriver, as shown in Fig. 6, Turn the bladeclockwise from a notch in one nut across to a notchin the other nut, so that thenuts turn in opposite direc-tions to each other. Once loose, back both nuts outuntil there is clearance to the pivot plate.

13. Install the other two bottle subassemblies using thesame procedure.

14. Remount the frame subassembly onto the mountingbase as described in CHANGING OPERATING COIL.

15. Close the contactor by energizing coil. Set the over-travel gap on the center pole at .050 ± .005 inch byturning the bottle nuts by hand. Once the gap isachieved, the bottle nuts should be finger-tight, oneagainst the other. Lock the bottle nuts with a screw-driver inserted from the front, turning the screwdrivercounterclockwise with the blade fitted from a notchin one bottle nut across to a notch of the other bottlenut, so that the nuts turn in opposite directions to eachother. Refer to Fig. 6.

4. From this point, proceed with one bottle subassem-bly at a time, completely installing each new unit be-fore removing the next old one, as follows,

5. Insert an Allen wrench through the two holes in eachterminal (T) into the two 1A x 20 hexsocket headscrews (R). Loosen the screws until terminal (T) is free.

Do not be concerned if the screws (R) fall into thecavity at this point.

6. Pull the terminal (T) from the structure. Thebottle nutsand spring will slide out from the crossbar, the shuntwill withdraw from the window it occupies, and the bot-tle subassembly is then out of the contactor.

7. Remove bottle clamp (P) and the two loose screws (R).8. Replacement bottle subassemblies may look like

either view in Fig. 7. Either style can be used, but allsubassemblies on any one contactor must be identi-cal. Although some bottles have metric threads thereis no problem, since all hardware to mount the bottlesubassemblies is English/American.

16. Adjust the bottle nuts on the two outer poles to make-circuit (touch) simultaneously with the center pole, us-ing voit-ohmmeters or test lamp circuits. Lock the bot-tle nuts with a screwdriver per Fig. 6.

17.The overtravel on the two outer poles may not be thesame as the center pole when the contacts are setto touch simultaneously. This is a normal variation.However, as the contacts wear, the overtravel on anypole must not be allowed to go below .020 inch.

18. When the contactor is open, pull the armature forward.The armature should not move because it should al-ready be firmly against the plastic main frame. If itdoes move, the kickout spring must be adjusted. SeeKICKOUT SPRING ADJUSTMENT.

9. Adjust screws (R) in each bottle subassembly so thatthe dimension L (Fig. 7) between terminal (T) and bot-tle clamp (P) is greater than 0.7 inch. At the other endof the subassembly, run the bottle nuts to the extremeend of the bottle stud. 19. Reconnect line and load cables.

10. Bend the shunt by hand to the approximate shape to20. Because it is difficult to detect a damaged vacuum

bottle, promptly destroy bottles removed from service.fit.

11. Insert the free end of the shunt into Its window in thecrossbar, sliding the bottle stud Into its notch in thecrossbar, with the bottle nuts under the pivot plate and

Do not re-adjust the bottle nuts to reset overtravel asthe bottles wear . Once placed Into service, overtravelshould be checked but not adjusted.

6i

I.L. 16999AV201, V211 320 AMPERE VACUUM CONTACTOR

i

I

Fig. 5 V201 Contactor

MODEL BMODEL A

5\ ILJ

l Ap

“TiP W2U i]r| 1UL| Sn1~Irfar t1.1!M

Fig. 6 Adjusting Bottle Nuts

INSPECTION AFTER SHORT CIRCUITThe V201 contactor is intended to be protected by pow-

er fuses and/or a circuit breaker in accordance with theNEC. However, the magnitude of a short circuit may ex-ceed the damage threshold of the vacuum bottles. Aftera short circuit, the unit should be examined for any ap-

parent physical damage, or deformation of conductor barsand cables. If there is any evidence of severe stress, itis recommended that all bottles be replaced. If the over-travel has changed significantly (from the last inspection)on one or more bottles, all three bottles should bereplaced.

.f-j

/"ifni(lL U ilnn*

I 1

mijlLx xi JjioM\

(/a

N0TE' FLANGE5 on-BOTH BOTTLE NUTSMUST BE DOWN

Fig. 7 Vacuum Bottles and Shunts

7

"1

V201, V211 320 AMPERE VACUUM CONTACTOR I.L. 16999A

A dielectric test would not by itself confirm that the bot-tles should be returned to service after a fault. However,if there is no physical evidence of stress, and if the over-travel exceeds the .020 in. minimum, the bottles can thenbe dielectrically tested as outlined previously. If physicalstress, overtravel, and dielectric are O.K., it is reasonableto return the bottles to service after a fault.

(ClltlX Clicvll Ixplfl> ct i ni»c cmiwuw

^ tajrjGj PMffcitOMSfl*0 c| Of CONTROLTxmt in.)?> , —

SHOW J?CMamromoisxro iiwfi

t > AC sunu

ILI L? Lio oI(

B! -o - -ItOf o^ HV O *2sS'

K;i i - )INSULATION LEVELRefer to the insulation resistance measurements be-

tween poles and from each pole to ground that wererecorded at start-up and subsequent intervals. Measurethe same points in the same manner and record. Inves-tigate any sudden reduction in resistance or any unusuallylow reading.

Dust and moisture are detrimental to electrical equip-ment. Industrial equipment is designed to tolerate a less-than-perfect environment. However, excessive dust cancause trouble, and should be wiped or blown off at ap-propriate intervals. If the contactor is wet for any reason,it must be dried until insulation resistance between polesand from each pole to ground has returned to normal.

f !•Irm i it-rc'ioot 1

4L

awr\u mCL'Sui AtED i

ceiLt JN & (Tootr /TR Lfr*D

Fig. 9 Connection diagram, V201

STOP ^TOP Rtv/

S3

r r f •»»—

LI 12 rn-iT

L ni i

11i »

a—l o— C/—<1 i

START STARTT 3rzi

CONTROLVOLTAGEl

CUSTOMER CONNECTIONS SHOWN AS OASHED LINES

Fig. 10 Connection Diagram, V211LOW VOLTAGE PROTECTIONWITH 3 WIRE PUSHBUTTONSTART-STOP OPERATION

LOW VOLTAGE RELEASEWITH 2 WIRE PUSHBUTTONSTART-STOP OPERATION

NON-REVERSING TABLE VI - RECOMMENDED DRIVING TORQUEDriving Fig. 5Torque Item

(lb.*m.) Refer.3 Location (Qty.)FWD Coil Terminals (4)

Shunt Nut (Bolt) (1 per pole)Clamp Screws (2 per pole)Base Mounting Screws (4)Coil Mounting Screws (2)Bottle Stud Mounting Bolt (1 per pole)

7-9290-9540-4560-6510-1590-95

N5 Rh i REVi S5M2H4

STOP STOP1 1

DOUBLE CIRCUIT PUSHBUTTONLOW VOLTAGE PROTECTION

SINGLE CIRCUIT PUSHBUTTONLOW VOLTAGE PROTECTION

REVERSINGFig. Q Control Circuit Diagrams

Westinghouse Electric CorporationControl Division

Asheville, N.C., U.S. A. 28813

Effective 7/S4Supersedes 16999 (2/84)

Printed in USA

8