Zn28 Series High Voltage Indoor 50. Hz Vacuum Cir | RFQ Sourcing Details

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Zn28 Speed Normal Type Circuit Breaker Arc-extinguishing Medium Vacuum Installation Insert Structure Vcb Poles Number 3 Type Circuit Breaker Function Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection) Certification ISO , CE, CCC Rated Frequency (Hz) 50h/60.

Hz Frequency 50 Hz Rated Currrent 630-4000A Rated Voltage 12/24kv Coil Number 2 Rated Short Circuit Breaking Current 20-40ka Rated Short Circuit Making Current 50-100ka Rated Operation Voltage DC/AC 110V/220V Lightning Impulse Voltage 75-125kv Themal Stability Current 20-40ka Rated Operation Sequence O-0.3s-Co-180s-Co Power Frequency Withstand Voltage 42-65kv Input Power 70W Dynamic Sable Current 50-100ka Transport Package Wooden Box Specification 652*632*555mm Trademark xianghu Origin Zhejiang, China HS Code Production Capacity 2000 Piece/Pieces Per Month Packaging & Delivery Package Size 450.00cm * 280.00cm * 260.00cm Package Gross Weight 1200.000kg ZN28G/ZN28A-12 Series Side Mounted Indoor High Voltage Vacuum Circuit Breaker ZN28G ZN28A-12 series indoor vacuum circuit breaker is a three-phase AC 50.

Hz,rated voltage of 12kV indoor switchgear,control and protection for industrial and mining enterprise,power plants and substations,electrical faclties,and for frequent operation place AMBIENT CONDITION 1.the ambient temperature:not higher than +40 C,not less than 10C(-30. Cis permited storage);2.the altitude:≤1000M;3.

Relative humidity: daily average value is not greater than g5%,monthly average is not greater than 90%;air relative humidity on average less than 2210-3. Mpa,on average less than1.810-3. Mpa. 4.The surrounding air is not corrosive and flammable gas, steam and other significant polution;5.Earthquake intensity:≤8 degree.

Product feature 1. The vacuum arcing chamber of this VCB is of middle sealed-in longitudinal magnetic field type. The main shaft, opening spring and buffer are all installed on the framework.

There are 6 pieces of insulator switch fixed with stable and moving trestles , then the vacuum arcing chamber are installed between the stable and moving trestles. The main shaft connects with moving conducting bar of vacuum arcing chamber through crutch arm of insulating bar.

Two pieces of insulation bars connect two ends of stable and moving trestles to form a whole so as to improve the rigidity. 2. When the stable and moving , the arc in vacuum occur between , then extinct when the current reach at zero.

Due to the special , during the arcing period, there is longitudinal magnetic field between;in Vacuum arc-extinction chamber, the medium intensity recover at high speed, as well as small arc power and electrocorrosion ratio after arc extinction, thus to improve the breaking capability on short-circuit current and electric life.

3. The VCB applies to rigorous occasions such as high altitude and frequent operation. 4. As long as the VCB accord to the mechanical characteristics, the client may select adaptable electromagnet or spring operation mechanism according to special situation.

Main technical parameter Item Unit Parameters Rated voltage KV 12 Rated current A 630-3150 Rated short-circuit breaking current KA Rated short-circuit closing current KA Rated dynamic steady electric current(peak) KA Rated thermal stabity current(RMS) KA Rated thermal stabiity time S 4 The breaking times of rated short circuit breaking current Times 30(50) Open time of CD10 electromagnetic operating mechanism mS