- Circuit Breaker HVD8 40.5KV 2000A SF6 from JUCRO ElectricDetail InformationHVD8 40.5KV 2000A SF6 Circuit Breaker from JUCRO ElectricDetailed Image1. Product descriptionHVD8 /LW8-40.5 type outdoor high-pressure sulfur hexafluoride circuit breaker is three-pole ac 50 hz, outdoor high voltage switch equipment, applicable to 40.5 kV power transmission and distribution system control and protection, can also be used to contact circuit breaker and movable capacitor group.Standard: IEC 62271-100.Certification: ISO9001-2015Operation: Energy-storage TypeInstallation: FixedArc-extinguishing Medium: SF6Speed: Normal Type Circuit BreakerHS Code: 85353000
a. The circuit breaker is outdoor small ceramic column structure, which equipped with CT14 spring operation mechanism; mechanism and main part connected with simple installation. It has features of convenient adjustment, reliable operation, suitable for frequent operation; mechanism service life more than 3000 times;
b. Adopt air-compression arc-extinguishing structure, with strong breaking capacity, 40kA total breaking times up to 12, which is the highest in China:
c. Reliable sealing performance. Adopt import seal; dynamic seal adopts "V" type sealing ring with spring pressure compensation structure; the transformer secondary wiring board matched by cooperative enterprises, to ensure the annual leakage rate less than 1%,
d. Inner current transformer adopts micro crystallizing alloy high magnetic materials, with accurate class up to grade 0. 2 or grade 0.2S. According to users' needs, it can be matched with 12 transformers, to meet the load line of 50 km without restrike.2. Main technical specification:ItemUnitDateRated voltageKV40.5Rated insulationLightning impulse withstand voltage(peak value)KV1851min power frequency
withstand voltageKV95Rated currentA2000Mechanical life timetime3000Rated air pressure of SF6 (psig at 20℃)Mpa0.05Alarm pressure/Min function pressure (psig at 20℃)Mpa0.47/0.45
Rated short-circuit breaking currentKA40
Rated short circuit making current (peak value)100Rated short time withstand current (thermal stability current)40Rated peak withstand current (dynamic stability current)KA100Rated out of step breaking currentKA10Rated breaking times under short circuit breaking currenttime12Rated short circuit durationS4Closing time (under rated operation voltage)S≤0.1Opening time (under rated operation voltage)S≤0.06Rated operating sequenceO-0.3s-CO-180s-CO
Rated making single capacitor bank currentA400
Annual leakage rate%≤1SF6 water content(V/V)≤150*10-6Rated operation voltage of matched CT14 spring operation mechanismClosing and opening coil voltageVAC: 220 380 DC: 18 110 220Energy storage motor voltageVAC: 220 380 DC: 110 220Weight of SF6 gaskg8Weight of circuit breaker (including operation mechanism)kg1400ItemUnitDataTechnical parameter
Moving contact travelmm95±2Measure moving contact travel
Opening distance between contactsmm60±1.5
Measure distance between moving and fixed contactPole-to-pole closing synchronousms≤3Measure pole distance difference between moving and fixed contactPole-to-pole opening synchronousms≤2
Measure pole distance difference between moving and fixed contactMain circuit resistancemΩ≤120
Measure DC voltage reduction
Rated air pressure, measuring method
Rated air pressure, measuring methodClosing buffer distancemm9.5-11
Under closing stateSpacer of closing buffermm1-2
Under closing statePartial 48.6kVPc20Measure by partial measuring device under rated air pressure; apply voltage 486kv on the two out-line ends of the circuit breaker for 1 min, then reduce the voltage to 28V to measureDisharge 28kVPc10
Strong package, Safety first.Inside with foam to support the product, put it in carton or wooden box, fixed it on pallet.
As long as possible to keep the products safe until it arriving customer's warehouse.
Clearly marking label outside of package, customers will be easy to identify their goods.20000 M2 of JUCRO Electric company land1500 M2 of office building5000 M2 of workshop building
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