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  3. D.C. Metal oxide surge arrester 直流金屬氧化物避雷器

    D.C. Metal oxide surge arrester 直流金屬氧化物避雷器

     

    D.C. Metal-oxide arrester for d.c. systems to protect rolling stocks, railway vehicles, d.c. switchgears, convert station and locomotives.

    D.C. metal oxide surge arrester for overvoltage protection of urban metro, light rail, electrical railway, rolling stocks, d.c. switchgears and d.c. transmission & transformation system

    Amtech d.c. metal oxide arresters are adopted by many worldly well-known groups all over the world. Such as Bombardier, Sécheron ,Alstom, CRRC.etc. Through them, our surge arresters are used all over the world to provide reliable and sound protection to the end users’ equipment.

    Our company, taking the advantage of the technology of MOA for d.c. system which returned technical personnels mastered in Japan, combining with the actual situation of such system, in the full cooperation with China National Centre for Quality Supervision and Test of Insulators and Arresters and relevant design institute, organizing experts to perform field monitoring, research and analysis on the low voltage d.c. contact line and d.c. transmission & transformation system, found out the key factors of the overvoltage damage under various system and worked out the safe and effective performance parameters required for reliable operation of such MOA.

    Based on above mentioned conditions, we innovated the formula and sintering process for d.c. zinc oxide varistor, product design and assembly technology to resolve all technical problems, now the series of d.c. MOA manufactured by our company are configured without gaps, better performance than imported like products on main performance specifications and reasonable parameter coordination ratio, indeed not only effectively protecting system but also ensuring its own security.

    1.D.C. MOA for protection of metro, light rail and electrial rail transport system.

     

    Table 1 Technical Parameters of d.c. MOA for protection of rolling stocks

    Product type

    Un

    kV

    Ur

    kV

    Ucov

    kV

    Uref.d.c

     

     

    ≥kV

    Ures @ switching impulse

     

    ≤kVpeak

    Ures @ lightning impulse

    8/20

    ≤kVpeak

    2ms

    Long duration current impulse

    A

    4/10

    High current impulse    

    kA

    U0.5kA

    U1kA

    U2kA

    U5kA

    U10kA

    U20kA

    HY10WL-1.0/2.4

    0.75

    1.0

    1.0

    1.3

    1.9

    2.0

    2.1

    2.3

    2.4

    2.7

    ≥1200

    100

    HY10WL-2.0/4.8

    1.5

    2.0

    2.0

    2.6

    3.8

    4.0

    4.2

    4.8

    4.8

    5.3

    HY10WL-4.8/9.6

    3.0

    4.8

    4.0

    5.2

    8.12

    8.34

    8.60

    9.20

    9.60

    10.48

    2.D.C.MOA for d.c. switchgear & electric railway contact system.

     

    Table 2 Technical parameters of d.c.MOA for d.c. switchgear @electrical railway contact system.

    Product type

    Un

    kV

    Ur

    kV

    Ucov

    kV

    Uref.d.c

     

     

    ≥kV

    Ures @ switching impulse

     

    ≤kVpeak

    Ures @ lightning impulse

    8/20

    ≤kVpeak

    2ms

    Long duration current impulse

    A

    4/10

    High current impulse    

    kA

    U0.5kA

    U1kA

    U2kA

    U5kA

    U10kA

    U20kA

    HY10WL-1.0/2.4G

    0.75

    1/1.2

    1

    1.3

    1.8

    2.0

    2.1

    2.3

    2.4

    2.7

    1200

    100

    HY10WL-2.0/4.8G

    1.5

    2/2.4

    2.0

    2.6

    3.6

    4.0

    4.2

    4.8

    4.8

    5.3

    Please kindly contact for more details if you have interest in our products or information about arrester.

    Rigofeng/Business development manager

    Xi’an Amtech High Voltage Equipments Co., Ltd.

    Web: www.mayidc.com/EN

    Email: rigofeng@163.com

    rigofeng@hotmail.com

    Cell+86-13689240925

    Linkedin: www.linkedin.com/in/rigo-feng-b759739a

    Facebook: rigofeng@163.com

    Skype:rigofeng

    Wechat: 13689240925

     



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