24 kV VE24 encapsulated pole vacuum circuit breaker Proven, durable circuit protection and controlBuilt upon Eaton's heritage of vacuum technology, the VE24 vacuum circuit breaker series is 24kV 3-phase indoor vacuum circuit breakers integrated with an encapsulated pole, from 630A to 3150A and 25kA to 31.5kA with rated frequency 50 - 60Hz.VE24 series is designed to achieve control and protection for medium voltage equipment and applications in industrial, mining and utility industries. By adopting APG technology, the encapsulated pole unit protects the VI and other components of the main circuit from physical impact, dust and condensation, thereby making it ideal for operation less than ideal ambient conditions. Thedraw-out design equipped with dedicated cassette is also available.VE24 vacuum circuit breakerType tests are conducted-ac-cording to GB standard: electrical endurance: E2; Mechanical endurance: M2; breaking capacitive current: C2.Consistency in dimension and pre-engineering tests in switchgear in plants guaran-tees interchangeability.Mechanical operation in routine tests ensure the stability of product perfor-mance.•••GB 1984-2003 High-voltage AC circuit breakersJB 3855-1996 3.6-40.5 kV Indoor AC HV vacuum circuit breakerDL/T 403-2000 HV vacuum circuit breaker, rated voltage 12kV to 40.5kVIEC 62271-100:2008 High-volt-age switchgear and control-gear – Part 100: Alternat-ing-current circuit-breakers••••CertificatesAmbient temperature: -40°C to +40°CAmbient humidity:Altitude: <1000 mSeismic intensity: < Magni-tude 8••••Operating conditionsAPG process used in VE24 series to seal the vacuum interrupter and circuit into the insulation cylinder enhances dielectric strength greatly,makes the VE24 perfect choice for harsh environment.Highly reliable vacuum circuit breaker with superior breaking capability. No maintenance needed for key components.The proven spring operating mechanism provides stable performance and excellent anti-corrosion performance, therefore needing less maintenance within its life cycle.•••Features1VE24 vacuum circuit breakerContentsDescription Page 134678VE24 vacuum circuit breakerProduct overview ................................................................Spring operating mechanism data ..........................................Technical data ..........................................................................Dimensions .............................................................................Wiring diagram ........................................................................VE24 vacuum circuit breaker models ......................................VE24 vacuum circuit breakerProduct overviewProduct descriptionDaily average relative humidity: ≤95%Monthly average relative humidity: ≤90%Daily average vapor pressure:≤2.2×103Mpa Monthly average vapor pressure:≤1.8×103MpaVE24 vacuum circuit breaker requires almost no relevant maintenance2Chemical industry Petroleum industry Piping industry Offshore mining ShipbuildingPaper manufacturing Opencast coal mine SubstationCement industry Automotive industry Power plantTextile and food industries Metallurgical industry•••••••••••••Application areas••••The VE24 is equipped with superior spring charging mechanism, utilizes modular design that is offeringoptimized mechanism main parts distribution, simpler structure and more reliable performance. The whole mechanism is composed by three modules: charging, closing, opening. Assembly and maintenance of these three parts are very simple. The spring charging mecha-nism composed by ratchet wheel mechanism, oscillator and closing spring is compact and smart. The operating mechanism is usually equipped with manualcharging device and electric charging device, enabling automatic reclosing function.The circuit breakers with manual charging operating mechanism are equipped with manual opening and closing operation buttons, breaking position indicator and spring mechanism charging status indicator, switch operations counter, shunt release auxiliary switch, position and fault signals, etc..The circuit breakers with electric charging operating mechanism have complemen-tary spring charging motor, shunt release, trip free relay, and auxiliary switch for spring charging motor release.The following accessories are offered as needed: undervolt-age releases, overcurrent relays, etc..Ideal for medium voltage control and protection inmedium voltage power supply and distribution system•••••The main circuit is encapsu-lated by epoxy resin, whereby the current-carrying compo-nents won’t be exposed to temperature fluctuations or oxidization which can result in the deterioration of heat dispersion.The main circuit is encapsu-lated by epoxy resin, ensuring that the connecting compo-nents won’t loosen due to mechanical operations,long-time use or temperature changes, thus avoiding overheating issues.The number of components of the main circuit is only 40-50% of that of composite insulation type circuitbreakers, which optimizes the control of phase and polarity spacing between the contact arms and tulip contacts and improves the contact head centering and contacting.The heat dissipating compo-nents of the large current EPU use epoxy coatingprocess to control insulation. Thus, larger heat dissipating components with a broader radiating surface are used to improve heat dispersion.The main circuit is encapsu-lated by epoxy resin, so as to guard against the possibility of small parts and otherforeign material left over from the installation and commis-sioning stage and provides protection against the ingress of water during operation, thus preventing possible short circuit or arcing events.••A vacuum interrupter with lower contact resistance is used. Main circuit resistance is 10-20% lower than for compound insulation, thus improves temperature rising conditions from the heat source.The main circuit is protected by EPU from dust accumula-tion which can result in the deterioration of heat dissipa-tion.Optional accessoriesCharging handle Trolly handle LifterVE24 vacuum circuit breakerProduct overviewSimple structure design of VE24 series minimizes fault occur-rence, simplifies routinemaintenance. Positive indication of the circuit breaker operating status is provided on the front panel of the circuit breaker for easy visual verification.The encapsulated pole unit (EPU) used in VE24 series circuit breakers ensures reliability in operation of vacuum interrupter (VI) andother key components. The EPU of VE24 has following features:Spring operating mechanism dataT echnical data of stored energy motorSpecification NameSpecification NameRated operating voltage (V)Closing coil rated operating current (A)Opening coil rated operating current (A)Normal operating voltage rangeAC, DC1102.01.8Closing: 80%-110% of rated operating voltageT echnical data of closing coilOpening: 65%-120% of rated operating voltage. Will not open when below 30% rated operating voltage1.00.9Rated operating voltage (V)Motor rated input power (W)Normal operating voltage rangeStored energy time at rated operating voltage (s)AC, DC11065 (80 above 2500A)85%-110% of rated operating voltage ≤ 1565 (80 above 2500A)85%-110% of rated operating voltage ≤ 15AC, DC220AC, DC2203Spring operating mechanism dataVE24 vacuum circuit breakerName Unit Parameters 4VE24 vacuum circuit breaker technical data (for 210 mm distribution panel)Rated voltage 24Rated frequencyHz 50Rated short-time power frequency withstand voltage (1 min)kV65 (phase-to-ground, phase-to-phase); 79 (gap)Rated lightning impulse withstand voltage 125 (phase-to-ground, phase-to-phase); 145 (gap)Rated current630/1250Rated short-time withstand current (4s)kA 2531.5Rated peak withstand current kA 6380Rated short-circuit breaking current kA 2531.5Rated short-circuit making current kA6380Rated short-circuit operating sequence O-0.3s-CO-180s-CO Conduction circuit resistance per phase μȍ≤60 (630A) Average closing speed m/s 0.8~1.2Average opening speed m/s 1.1~1.7Closing time 35~70Opening time20~50Contact closing bounce time≤2Three phase opening/closing asynchronism ms ≤2Pole center distancemm 210Permissible wear for movable and fixed contacts mm 33Mechanical lifespancycles 10000245065 (phase-to-ground, phase-to-phase); 79 (gap)125 (phase-to-ground, phase-to-phase); 145 (gap)630/1250O-0.3s-CO-180s-CO 0.8~1.21.1~1.735~7020~50≤2≤221010000≤50 (1,250A)kV kV A ms ms ms T echnical dataVE24 vacuum circuit breakerRated voltage 24Rated frequencyHz 50Rated short-time power frequency withstand voltage (1 min)kV 65 (phase-to-ground, phase-to-phase); 79 (gap)Rated lightning impulse withstand voltage 125 (phase-to-ground, phase-to-phase); 145 (gap)Rated current630/1250Rated short-time withstand current (4s)kA 2531.5Rated peak withstand current kA 6380Rated short-circuit breaking current kA 2531.5Rated short-circuit making current kA6380Rated short-circuit operating sequence O-0.3s-CO-180s-CO Conduction circuit resistance per phase μȍ≤60 (630A) Average closing speed m/s 0.8~1.2Average opening speed m/s 1.1~1.7Closing time 35~70Opening time20~50Contact closing bounce time≤2Three phase opening/closing asynchronism ms ≤2Pole center distancemm 275Permissible wear for movable and fixed contacts mm 33Mechanical lifespancycles 10000245065 (phase-to-ground, phase-to-phase); 79 (gap)125 (phase-to-ground, phase-to-phase); 145 (gap)O-0.3s-CO-180s-CO 0.8~1.21.1~1.735~7020~50≤2≤227510000≤50 (1,250A)kV kV A ms ms ms VE24 vacuum circuit breaker technical data (for 275mm distribution panel)630/1250/1600/2000/2500/3150≤35 (1600-2,000A)≤25 (above 2500A)5T echnical dataName Unit Parameters VE24 vacuum circuit breaker62102102752752752752752102102758008001000100010001000100080080010006301250630125012501600~20002500~3150630125063031.52531.52531.531.531.52531.525638638838838838838838638638838652652852852852852852652652852640640840840840840840640640840650650850850850850850650650850685705685705685705705781685705Ø35Ø35Ø49Ø35Ø49Ø49Ø79Ø109Ø35Ø49325345325345325345345345325345745745745745745735735745745745757737757737757757825737757737655655655655655685685655655655377277277377377377377377277277404040404000404040VE24 vacuum circuit breaker dimensionsDistribution panel width(mm)Rated current (A)Rated short-circuit breaking current (kA)P A B C D F G J K N R S T Eaton PowerDimensionsVE24 vacuum circuit breakerr i n g e n e r g y . M o t o r c i r c u i t C l o s i n g c i r c u i tL o c k i n g c i r c u i t O p e n i n g c i r c u i tO v e o s i n g c o i l e n i n g c o i l : R e s i s t a n c e : I n d i r e c t o v e r c u r r e n t r e l e a s e c o i l a l )c k i n g c o i l (o p t i o n a l )7Wiring diagramVE24 vacuum circuit breaker wiring diagramVE24 vacuum circuit breaker8VE24 vacuum circuit breaker selection guideVE24 vacuum circuit breaker selection guideDistribution panel width (mm)Breaker phase spacing (mm)Rated short-circuit breaking current (kA)Rated operating current (A)80010002102752531.52531.5□630□1250□630□1250□630□1250□630□1250□1600□2000□2500□3150Opening power supply (V)Closing power supply (V)Stored energy motor power supply (V)□ Overcurrent release □ Closing latch □ Position latch□ Cancel tripping prevention □ Undervoltage release □ Operating handle□ 3 overcurrent□ ASpring operating mechanism parametersOptional configurations (standard option includes trip free device. Please note if the trip free device has to been canceled)□ DC110□ DC110□ DC110Parameters Name□ 2 overcurrent □ V □ V□ V□ Quantity required Parameters Name□ AC220□ AC220□ AC220□ DC220□ DC220□ DC220□ AC110□ AC110□ AC110VE24 vacuum circuit breaker。
