Westinghouse DE-ION 150-DH-250-A Instruction Book Download Page 1 | Manualshive

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Summary of Contents for DE-ION 150-DH-250-A

Page 1: ... J o c J o 3 o i J 3 o a g a s n iuiiiiviy a wiiiif wa ru 5 niin imjw owB xrKimf y HJmviiiuiiJi BvjAi 6 a II II ttCCUX iuij ur i iiu Mwiiii t ii iwi fl iuitt wc 4 i r eni aan Sf nMivir yfii 4 tllt ieM lntMr uiwt v jJMBiim m tffc tuiKniwdftimjiUiaiiuWffWWTM ftysKm u i HK 4 tWS 0 W Courtesy of NationalSwitchgear com ...

Page 2: ...000 32 000 44 000 44 000 13 000 13 000 22 000 2 2 000 23 000 2 3 000 150 4 16 4 76 3 5 1200 150 4 16 4 76 3 5 2000 80 DHW350 D 60 DH 250 D 250 4 16 4 16 4 76 3 85 1200 230 4 76 3 85 2000 75 DH 230 A 75 DH 250 A 250 4 6 7 2 8 25 0 23 1200 250 7 2 4 6 2000 75 DH 500 A 75 DH 50Q A 800 7 2 8 23 6 6 1200 500 6 6 7 2 8 25 2000 1S0 DH 130 A ISO DIM50 A 150 13 8 13 0 6 6 600 150 13 8 15 0 6 6 1200 IBO DIM...

Page 3: ... V l HV M ft i uir j Otl x ib i ip Stf ii rt wu V iaiBi RATER i V WILL Fit HOUSING onHE Ml W ei au uii wp iM niiaj M H I U iM s m n IC I MJAU t nW c iV l fvik J l Hi rA Jj fOiu u mnwjnxiiM AitaiiiAtutuuiMcyuniy irmtMAlivcftMivi7 i nuutt zi TYPE MECHANISM I l im 1iijtvtinuwiti IT UMJHI I uxff a tijin iiffi UixrtrlfH MAX DESIGN KV III J MSV WIHV V X dAf AMPERES CLOSING VOLTAGE loJiiiit f ivii ii K J...

Page 4: ...ce makes the De ion air breaker an outstanding performer In the type DH magnetic De ion air circuit breakers Westing house offers a complete standard line for circuits from 2 3 to IB kv Each of the type DH air circuit breakers is three pole electrically operated and is built as a complete horizontal drawoul unit for metal clad switchgear Breaker units of the same rating are interchangeable so that...

Page 5: ... frame are the secondary con tacts for automatically disconnecting the control wiring when the breaker is withdrawn the auxiliary switch and other auxiliary devices 5 vjk t A r f f hn v VAftC CHUTE i 1 V V r MMNR rv i IStftTjg f Ol pf iP GKS rrp r L INTERPOLE OARRIER ASSEMBLY S i BSaa i iSI l i i 51 ARC HORN CONNECTOR 3 m atiurTf n A v OPERATING MOO l il 1 i y fe y h J U i u t z v i M 4iV i I I l ...

Page 6: ...lowM iSi KiJUiKifeitfxoi tnui itursw AIM INSTALLATION With the exception of the arcing chambers and barriers these breakers are shipped completely assembled and adjusted No adjustments should be required and none should be made unless obviously needed i When the breaker has been removed from the crate remove braces which support the blowout magnet pole pieces during shipment CmiMmw Severe injury m...

Page 7: ... bolts at lower front comers hold assembly in place Because of size and weight the interpole barrier assembly on the 1 3 kv breakers is divided in two parts Righ t half goes on first The front sleei sheets are aligned by two locating pins at lower front corners and single bolt at top center Two bolts at lower front corners hold assembly in place The breaker is now ready to bo operated electrically...

Page 8: ...e mechanism panel is mounted on the front of the closing solenoid mechanism as shown in Fig 3 On it are mounted the following auxiliary devices included as standard on all breakers Ipm1t Trip MaffpiieL This device may be equipped with a coil lor direct curmet or alternat ing current or capacitor tripping OPERATING MECHANISM C l4Mf Swiiteliin This switch causes the supply to the closing solenoid to...

Page 9: ... also be mounted on ihe mechanism panel when required Underroltagre Trip MfcMfaMeisai This is a magnetically held device which when released will trip the breaker using energy stored in a spring during the mechanism retrieving motion For in stantaneous release the holding magnet coil may be connected to d c with a series resistor to suit the voltage or it may be supplied with low voltage d c from ...

Page 10: ...off must not occur too early in stroke or mech anism might fail to complete dosing stroke Proper action will be obtained when switch plunger has 1 2 f Vs hioli overIravel In other words between position where contacts touch and position with breaker closed and latched at rest there should be fa to inch motion of switch plunger Ordinarily no adjustment is required The resilience provided in the ope...

Page 11: ...gs which apply pressure to the piece main moving contacts are hidden iu a recess in the moving arm casting In Fig 6 b note that there is an elongated hole hidden from view in each main contact bridge There is just one adjustment on this contact arrangement namely the pushrod length This length must be such that the pin through the con tact bridges moves approximately Vfo inch from the end of the e...

Page 12: ... the breaker in interrupting an arc is shown ra Fig 7 When the arcing contacts separate an arc is drawn between them without the blowout coil carrying current as indicated by position L The arc rises rapidly from this position under the influence of magnetic forces and thermal air currents These cause the arc to impinge on the arcing horns thus including the blowout coil in series with the arc Whe...

Page 13: ...Wmvr wfHT W v M V t 4 v rta Nf v n MPi r I c r V tVlT i i ini ai r Hn irr r i nTrt N nmr H V ARCING CONTACT SPRINGS STATIONARY ARCING CONTACT MAIM CONTACT SHUNT UPPER BUSHING v MOVING CONTACT ARM MOVING ARCING CONTACT STATIONARY ARCING CONTACT ARCING CONTACT SPRINGS 31 E l MOVING ARCING CONTACT MOVING ARCING HORN f r v MOVING CONTACT ARM TRAVEL UPPER MAIN CONTACT fc j STATIONARY MAIN CONTACT LOWER...

Page 14: ...NT connector block arranged to plug into a mating block mounted on the cell neotor block is mounted on a movable bracket i Jus secondary con All type DH air circuit breakers are arranged or use in metal olad equipment from which they may be drawn out horizontally As may be seen in Fig 9 all parts are supported on a steel frame with four wheels with roller bearings to facilitate moving the breaker ...

Page 15: ...lv U 5 v mm it S L Ip W W mji ft MV r r to 1 t o A m v FIG 9 R ai Viww of 150 DH 260 Cirauit Bicoakexv iri c WiW Vj V 4v V W pc iiii mm y r ill V v v y the lower 1eft ha nd side of the breaker frame This permits the plug in connector to be eactended to the rear of its normal position so that the control circuits may bo connected and the breaker operated elec trically while the main contacts are di...

Page 16: ...ked See page 15 Contacts Also the interior of the arc chutes should he im spooled for cleanliness degree of erosion etc For breakers which operate very frequently such as those on motor starling and arc furnace switching more maintenance will he required especially when breaker opens large fault currents as well as or dinary load currents Until experience has been acquired on such an application i...

Page 17: ...hrough each of the slots between the arc splitter plates Also direct the dry air stream thoroughly over the arc box shields These are the ceramic liners in the lower end of the chute where the arc is drawn The arc chutes may be removed periodically for a thorough inspection Remove any residue or dirt or arc products with a cloth or by a light sanding Do not Use a wire brush or emery cloth for till...

Page 18: ...anger in this practice should be understood and safety pre cautions taken The energy stored in the con tact and opening springs can very easily lead to severe personal injury if breaker is de cidently trippif d whHe head or hands are near the moving parts Therefore a safety block or guard should be put on the breaker to stop the contact arms early in the opening stroke On 4 16 kv breakers adjustme...

Page 19: ...eeded to remove loose var nish and wipe off all dust from sanding 2H Apply three coats of varnish Wes bughouse Allow 24 hours drying time between coats at ordinary temperatures Drying time may be decreased by preheating parts with infrared lamps to a temperature v of 40 to SO degrees C before applying varnish and likewise healing each coat for about 4 to 8 hours or until the varnish has set up to ...

Page 20: ...ible to obtain correct adjustments or If latches fail to hold replacements should be considered Renewal Parts A list of renewal parts recom mended to be kept in stock will be furnished upon request When ordering renewal parts specify the name of the part and include all of the information given on the breaker nameplate With iiaasriif t rfrmv rt vi k 4 J Lv y imsjii ir r U4 i V V ii o s V kUV Mt tU...

Page 21: ...4 PA 3001 Walnut St PHOENIX AR1Z 1110 N 21i t Avo PITTSBURGH 30 PA 306 4lh Avo P O Box 1017 PORTLAND 4 ORE 309 S W Sixth Avo PROVIDENCE 3 R L B1 Empire St RALEIGH N CL 318 Superior Bldg P O Box 2146 RJALTO CALIF 430 West Foothill Blvd RICHMOND 21 VA 4000 Went Broad St ROANOKE VA 303 ltd Si S W ROCHESTER 0 N Y 711 Exchange St ROCKFORD ILL 2121 HJtli St RUTLAND VT 90 Merchants Row SACRAMENTO M CALIF...

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