ZHEJIANG POWER TECH ELECTRIC CO., LTD.  

Product Name: Vd4 Type High Voltage Indoor Fixed or Withdrawable Vacuum Circuit Breaker (VCB) Model NO.: VD4 Certification: ISO9001-2000 Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection) Type: Circuit Breaker Poles Number: 3 Structure: Withdrawable Installation: Insert Arc-extinguishing Medium: Vacuum Speed: High-Speed Circuit Breaker Operation: Energy-storage Type Breaking Capacity: High Voltage Circuit Breakers Trademark: powertech Transport Package: Wooden Packing Specification: IEC, GB Origin: Zhejiang, China HS Code: 8535210000 Product Description Vd4 Type High Voltage Indoor Fixed or Withdrawable Vacuum Circuit Breaker(VCB)General VD4 medium-voltage indoor vacuum circuit breaker is applicable for three-phase AC power system of rated voltage up to 7.2kV~24kV and frequency 50/60HZ,widely used in many fields such as power plant, transformer substation, petrol chemical industry ,metallurgy ,manufacturing industry ,airport, residential area, etc., to control and protect the electric equipment, especially ,It is used for the occasion that needs infrequent operation at rated current or multi-breaking short circuit current, may be mounted in the indoor air insulating switchgear like type KYN28 or KYN96, ABB type ZS series, etc. This circuit breaker is standards asGB1984-2003 AC high voltage circuit breaker ,JB3855 3.6-40.5Kv indoor AC High voltage circuit breaker ,DL/T403 Specification of 12-40.5Kv indoor High voltage vacuum circuit breaker for order as well as IEC60694. This circuit breaker is made with mature APG technology .The application of VD4 terminal buffer guarantees the indoor terminal is ever more reliable in nay operation environment. VD4 can fully meet the requirement of GB, DL, IEC, DIN, VDE as well as standards of other advanced industrial countries.Service environmenta) Air temperature: Maximum temperature: +40ºC; Minimum temperature:-25ºCb) Humidity: Monthly average humidity 95%; Daily average humidity 90%.c) Altitude above sea level: Maximum installation altitude: 2500md) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.e) No frequent violent shakeMain technical specificationsNoItemUnitParameter1Rated voltagekV12/17.5242Rated frequencyHz50/603Rated currentA630…4000A41min power frequency withstand voltagekV48655Lightning impulse withstand voltagekV75/95125/1506Rated short circuit breaking current(peak)kA50/63/80/1007Rated active load and close circuit breaking currentA63508Rated short breaking currentkA20…409Rated short circuit making current(peak)kA50/63/80/10010Rated cable(line) charging breaking currentA50 and 1011Rated capacitor bank switching currentA40012Rated withstand current(peak)kA50/63/80/10013Short time withstand current(4s)kA20…4014Mechanism lifetimes10000Note: For short circuit breaking current &rated current is optional by clients.ConTACT US:Contact person: Mr. Chen ChengmingYour Best Choice for Electrical Appliances Industry!!!Please leave an inquiry to know more details about Price ,Packing ,Shipping and Discount.