CJP Company is specializing in engineering solutions for lightning and overvoltage protections / designing & manufacturing special apparatuses for MOV & SPD / designing & manufacturing & exporting surge protective device (SPD) as well as its special varistor chip (the unique one-station special manufacturer for SPD’s special varistor chip, SPD for power & signal protection & special testers for lightening protective devices and surge impulsing tests).
  CJP principal is an expert entitled to Government Special Allowance (GSA), who have had higher prestige in varistor industry; is senior members of both the Chinese Institute of Electronics and IEEE. Several experienced engineers have fulfilled the research projects of former Ministry of Machine Building and Electronics Industry (MMBEI).
   CJP-Company is a manufacturer and provider of products and engineered solutions for lightning and overvoltage protections,including MOV(Metal Oxide Varistor)-CJV and CJE series,SPD(Surge Protective Devices)-CJPseries, and special test equipmentsp-CJ series.
   CJV refers to epoxy resin coated MOV particularly suitable for SPD applications,and CJE series are encased in plastic case for industrial using.The standard types have nominal disk diameters from 14mm to 50mm,with maximum discharge current from 6kA to 70kA(8/20 impulse current)or 0.6kA to 7kA(10/350 impulse current)for single disk,and via our unique disk-matching method, the paralleled disks with current handling capabilities of 150kA-8/20, or 15kA-10/350，or even higher ,are achievable.The demonstrated life time of the CJV series MOV is 28～56 years,or even longer ,under conditions of ambient temperature of 55℃ and maximum continuous ac voltages. Our standard MOV have been UL listed (E243853).
   CJP series SPD have been designed and fabricated in accordance with the specifications of IEC61643-11,IEC61643-21,or custom's specifications.Various types of SPD are available from CJP series for applications in low-voltage power distribution systems or signal and data systems,including
Class T1,T2,and T3 SPD in accordance with IEC-Spec, the SPD for Category C,B,and A in accordance with IEEE C62.41,and Class A,B,C,and D SPD in accordance with VDE0675,Part 6.
   CJ series special purpose testers and instruments are intended to test SPD, MOV, GDT(gas discharge tubers),AGD(air gap dischargers),and the like. They also are important production equipments for reliability screening and aging of above mentioned devices. CJ series have been designed and fabricated in accordance with IEC60060-1, IEC61000-4-5，IEC61000-4-2，IEC1180-1, IEEE C62.45, and related device's specifications.Various waveforms of impulse generators are available including T1/T2 impulse such as 8/20,10/80,30/60,10/250,10/350,10/1000:combination impulse1.2/50-8/20;rectangular current 2mS,1mS,and 0.5mS;ramp voltage impulse from 100V/s to 1000V/μS; and ring wave 10/1000μS,5kHz,800Hz,and 400Hz.
CJP-Company has established a reputation in the professional circle of lightning protection for its high quality products, better services,and active professional activities,such as:
☆Prepared the Chapter 14, titled“Surge Protective Device”in the Book of Volume 2 of“China Electric Engineering Canon”.
☆Took part in the groups responsible for preparing the national specifications of GB18802-1 and GB/T10193.
☆Submitted comments and suggestions to the IEC and ITU working groups via national representatives of China.
☆More than twenty technical papers written by the engineers from CJP-company have been published by Chinese Journals,
☆Hold five Chinese patents.
   A fast growing of CJP-Company originates from its philosophy which covers three primary ideas:
☆provide top-quality products, responsive service and high value for our customers.
☆keep track of professional progress by never-ending innovation.
☆Put people first ,not only our employees, but also customers, suppliers, and contractors, when planning, designing and implementing business activities, products and processes.
   We will follow up these ideas and do it still better.
   The Company’s capabilities include:
☆Provide standard varistors, surge protective devices,and test equipments,listed in the Company's data sheets.
☆Provide products for customer-specific requirements.
☆Testing ,aging and reliability screening of MOVs and SPDs.
☆OEM business.
☆Provide engineered solutions for lightning and overvoltage protection problems.
  CJP-Company will develop friendship and cooperation with all customers, suppliers, and contractors,for common development and prosperity.