24 kv VE24 encapsulated pole vacuum circuit breaker. Proven, durable circuit protection and control

Transcription

1 24 kv VE24 encapsulated pole vacuum circuit breaker Proven, durable circuit protection and control

2 Product overview VE24 vacuum circuit breaker Contents Description VE24 vacuum circuit breaker Product overview... Spring operating mechanism data... Technical data... Dimensions... Wiring diagram... VE24 vacuum circuit breaker models... Page VE24 vacuum circuit breaker Product description Built 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 ka to ka 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. The draw-out design equipped with dedicated cassette is also available. Certificates GB High-voltage AC circuit breakers JB kv Indoor AC HV vacuum circuit breaker DL/T HV vacuum circuit breaker, rated voltage 12kV to.5kv IEC :2008 High-voltage switchgear and controlgear Part 100: Alternating-current circuit-breakers Operating conditions Ambient temperature: - C to + C Ambient humidity: Daily average relative humidity: 95% Monthly average relative humidity: 90% Daily average vapor pressure: Mpa Monthly average vapor pressure: Mpa Altitude: < m Seismic intensity: < Magnitude 8 Features APG 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. Type tests are conducted-according to GB standard: electrical endurance: E2; Mechanical endurance: M2; breaking capacitive current: C2. Consistency in dimension and pre-engineering tests in switchgear in plants guarantees interchangeability. Mechanical operation in routine tests ensure the stability of product performance. 1

3 Product overview Application areas Chemical industry Petroleum industry Piping industry Offshore mining Shipbuilding Paper manufacturing Opencast coal mine Substation Cement industry Automotive industry Power plant Textile and food industries Metallurgical industry VE24 vacuum circuit breaker requires almost no relevant maintenance Simple structure design of VE24 series minimizes fault occurrence, simplifies routine maintenance. 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) and other key components. The EPU of VE24 has following features: 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 accumulation which can result in the deterioration of heat dissipation. The main circuit is encapsulated by epoxy resin, whereby the current-carrying components won t be exposed to temperature fluctuations or oxidization which can result in the deterioration of heat dispersion. The main circuit is encapsulated by epoxy resin, ensuring that the connecting components 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 -50% of that of composite insulation type circuit breakers, 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 components of the large current EPU use epoxy coating process to control insulation. Thus, larger heat dissipating components with a broader radiating surface are used to improve heat dispersion. The main circuit is encapsulated by epoxy resin, so as to guard against the possibility of small parts and other foreign material left over from the installation and commissioning stage and provides protection against the ingress of water during operation, thus preventing possible short circuit or arcing events. Ideal for medium voltage control and protection in medium voltage power supply and distribution system The VE24 is equipped with superior spring charging mechanism, utilizes modular design that is offering optimized 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 mechanism composed by ratchet wheel mechanism, oscillator and closing spring is compact and smart. The operating mechanism is usually equipped with manual charging 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 complementary spring charging motor, shunt release, trip free relay, and auxiliary switch for spring charging motor release. The following accessories are offered as needed: undervoltage releases, overcurrent relays, etc.. Optional accessories Charging handle Trolly handle Lifter 2

4 Spring operating mechanism data Spring operating mechanism data Technical data of stored energy motor Name Rated operating voltage (V) Motor rated input power (W) Normal operating voltage range Stored energy time at rated operating voltage (s) Specification AC, DC (80 above 00A) 85%-110% of rated operating voltage 15 AC, DC (80 above 00A) 85%-110% of rated operating voltage 15 Technical data of closing coil Name Rated operating voltage (V) Closing coil rated operating current (A) Opening coil rated operating current (A) Normal operating voltage range Specification AC, DC110 AC, DC Closing: 80%-110% of rated operating voltage Opening: 65%-120% of rated operating voltage. Will not open when below 30% rated operating voltage 3

5 Technical data VE24 vacuum circuit breaker technical data (for mm distribution panel) Name Unit Parameters Rated voltage kv Rated frequency Hz Rated short-time power frequency withstand voltage (1 min) kv 65 (phase-to-ground, phase-to-phase); 79 (gap) 65 (phase-to-ground, phase-to-phase); 79 (gap) Rated lightning impulse withstand voltage kv 1 (phase-to-ground, phase-to-phase); 145 (gap) 1 (phase-to-ground, phase-to-phase); 145 (gap) Rated current A 630/10 630/10 Rated short-time withstand current (4s) ka Rated peak withstand current ka Rated short-circuit breaking current ka Rated short-circuit making current ka Rated short-circuit operating sequence O-0.3s-CO-180s-CO O-0.3s-CO-180s-CO Conduction circuit resistance per phase μ 60 (630A) 50 (1,0A) Average closing speed m/s 0.8~ ~1.2 Average opening speed m/s 1.1~ ~1.7 Closing time ms 35~70 35~70 Opening time ms 20~50 20~50 Contact closing bounce time ms Three phase opening/closing asynchronism ms Pole center distance mm Permissible wear for movable and fixed contacts mm 3 3 Mechanical lifespan cycles 0 0 4

6 Technical data VE24 vacuum circuit breaker technical data (for mm distribution panel) Name Unit Parameters Rated voltage kv Rated frequency Hz Rated short-time power frequency withstand voltage (1 min) kv 65 (phase-to-ground, phase-to-phase); 79 (gap) 65 (phase-to-ground, phase-to-phase); 79 (gap) Rated lightning impulse withstand voltage kv 1 (phase-to-ground, phase-to-phase); 145 (gap) 1 (phase-to-ground, phase-to-phase); 145 (gap) Rated current A 630/10 630/10/1600/2000/00/3150 Rated short-time withstand current (4s) ka Rated peak withstand current ka Rated short-circuit breaking current ka Rated short-circuit making current ka Rated short-circuit operating sequence O-0.3s-CO-180s-CO O-0.3s-CO-180s-CO Conduction circuit resistance per phase μ 60 (630A) 50 (1,0A) 35 (1600-2,000A) (above 00A) Average closing speed m/s 0.8~ ~1.2 Average opening speed m/s 1.1~ ~1.7 Closing time ms 35~70 35~70 Opening time ms 20~50 20~50 Contact closing bounce time ms Three phase opening/closing asynchronism ms Pole center distance mm Permissible wear for movable and fixed contacts mm 3 3 Mechanical lifespan cycles 0 0 5

7 Dimensions VE24 vacuum circuit breaker dimensions Eaton Power Distribution 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 ~ ~ Ø35 Ø35 Ø49 Ø49 Ø35 Ø35 Ø49 Ø49 Ø79 Ø

8 Wiring diagram VE24 vacuum circuit breaker wiring diagram Motor circuit Closing circuit Locking circuit Opening circuit Overcurrent trip (phase A) Overcurrent trip (phase C) Overcurrent trip (phase B) S9: Auxiliary switch (when circuit breaker is in the service position) S8: Auxiliary switch (when circuit breaker is in the test position) S2: Auxiliary switch S1: Auxiliary switch (switched on after the closing spring is charged) QF: Auxiliary switch (switched during closing or opening operation) HQ: Closing coil TQ: Opening coil R0-R1: Resistance Y7-Y9: Indirect overcurrent release coil (optional) Y1: Locking coil (optional) V2-V4: Bridge rectifier (off for DC) M: Spring charging motor JP1-JP11: Jumper K0: Anti-pumping relay (optional) Note: 1. In the figure, the circuit breaker is in the test position, is open and is not storing energy. 2. For DC power supply, the polarities in the dash box should be consistent. 7

9 VE24 vacuum circuit breaker selection guide VE24 vacuum circuit breaker selection guide Distribution panel width (mm) Breaker phase spacing (mm) Rated short-circuit breaking current (ka) Rated operating current (A) Spring operating mechanism parameters Name Parameters Opening power supply (V) Closing power supply (V) Stored energy motor power supply (V) DC110 DC110 DC110 AC110 AC110 AC110 DC220 DC220 DC220 AC220 AC220 AC220 Optional configurations (standard option includes trip free device. Please note if the trip free device has to been canceled) Name Parameters Overcurrent release Closing latch Position latch Cancel tripping prevention Undervoltage release Operating handle 2 overcurrent V V V Quantity required 3 overcurrent A 8