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Metal Oxide Surge Arrester with Disconnector

Product Description

Type: Power Source Arrester Installation: Parallel Arrester Size: Meidum Shape: Spiral Certification: ISO9001 Features: Reduced Line Maintenance,Good Sealing,Explosion-Pr Origin: Jiangyin Yunfeng, China Structure: Zinc Oxide Arrester Application: AC/DC System Operation Voltage: High Voltage Material: ZnO Function: Protect Electrical Devices in a.C.Power System Trademark: YF Metal Oxide Surge Arrester(MOA) without Gaps for A.C.Sytems
Product Overview
MOA  is composed of metal oxide varistors,housing(porcelain or silicon rubber),base,upper cover,grading ring etc.Our products have excellent performance in accordance with IEC international standard IEC600 99-4(2000) and China National Standard GB11032-2000 for "Alternating Current Gapless MOA".Polymeric housed MOA manufactured by AMTECH features small size,lightweight,simple manufacturing process,good sealing,explosion-proof,long working life,wounded-proof,high pollution resistance and reduced line maintenance,etc.

MOA Classification Code
Metal Oxide Surge Arrester with Disconnector

Gapless arrester electrical parameter
Type  Rated voltage  MCOV Residual voltge(kv)
Wave impluse withstand current
2000µ S square

Current impluse
 4/10µ S high
Steep impluse current Switching impluse current
8/20 µ Lightning impluse current
YH10W-3
 
3 2.55 9.5 7.7 9 250 100
YH10W-6 6 5.1 19.5 15.4 18 250 100
YH10W-9 9 7.65 28.5 23.1 27 250 100
YH10W-10 10 8.4 36 30 23 250 100
YH10W-11 11 9.4 40 33 30 250 100
YH10W-12 12 10.2 38.0 30.8 36 250 100
YH10W-15 15 12.7 47.5 38.5 45 250 100
YH10W-18 18 15.3 57.0 46.2 54 250 100
YH10W-21 21 17.0 66.5 53.9 63 250 100
YH10W-24 24 19.2 76.0 61.6 72 250 100
YH10W-27 27 21.9 85.5 69.3 81 250 100
YH10W-30 30 24.4 95.0 76.5 90 250 100
YH10W-33 33 26.8 104.5 84.7 99 250 100
YH10W-36 36 29 114.0 92.4 108 250 100
YH10W-42 42 34.1 132.3 100.1 126 250 100
YH10W-48 48 39 152.0 126.0 150 250 100
YH10W-54 54 43 171.0 139.0 162 250 100
YH10W-60 60 48 208.0 160.0 180 250 100
YH10W-66 66 52.8 230.0 172.0 198 250 100
  Note:Please drop "H" if it is porcelain arrester.
 
Main principie
Zinc-oxide lightning arrester is the most advanced Over-Voltage Protector at present in the world. The voltage current characteristic of the varistor has been changed compared with traditional carborundum arresters due to the multiple metal oxide materials application in the core element-varistor,which has greatly improved the varistor's throughput capacity and brought thorough change to arresters'characteristics.
When arrester is under normal voltage,there is only microamp current through it .When it is under high voltage,arresters'excellent nonlinear voltage current feature gets into play,so the current through arresters will reach thousands of amperes and the arresters are at conducting status,releasing over-voltage energv to effectively protect the power transmission equipments from damage caused by over voltage.

Application and features
Zinc-oxide lightning arrester is protective equipment for electrical devices in A.C.power system from damage caused by over voltage or over-voltage operation.


Metal Oxide Surge Arrester with Disconnector

Actuation ampere-second characteristic
A disconnector must work when there is faulty current. According to the national standard GB11032, dynamic ampere-second characteristic is to be tested at power frequency current 800A,200A, 20A, 5A virtual value at China National Center for Quality Supervision and Test of Insulators and Surge Arresters. The test results are shown in next table.
Test results of operating ampere-second characteristic
Current 800A 200A
Sample No. 1 2 3 4 5 6 7 8 9 10
Operation Time 00.016 0.012 0.018 0.012 0.019 0.026 0.076 0.018 0.068 0.066
Current 20A 5A
Sample No. 11 12 13 14 15 16 17 18 19 20
Operation Time 50 35 2 1.5 24 46 529 595 98 316

Characteristics of MOA with disconnector
MOA is connected with wire via the disconnector. Under normal conditions,when lightning current and operating over-voltage current pass through MOA, the disconnector will not be actuated; under abnormal conditions,when MOA fails to operate,the disconnector will be actuated and the wire connected to the MOA will be cut off automatically, thus maintaining the continuous power supply and keeping enougf insulating distance between the wire and MOA.

Disconnector Capacity of Current Impulse Withstand and Operating Duty
The disconnector is installed in series with MOA. When MOA works properly, non-actuation of the disconnector guarantees MOA's normal performance. As National Standard GB11032 stipulates that the disconnector should withstand:
    a.Long duration current impulse test;
    b. Loading test;
The type test made by China National Center for Quality Supervision and Test os Insulators and Surge Arresters proves that the disconnector has non-reaction capability when withstanding 2ms 600A current impulse and 4/10µS 100kA high current loading.

Main Technical Parameters
A. Main technical parameters the same as MOA of corresponding type;
B. See the following Table for outline dimensions and weight.
Main parameters of polymer housed MOA with disconnector
Type of MOA Fig.
HY5WS-10/30TL 23  (P37)
HY5WS-17/50TL 24  (P37)
HY5WZ-10/27TL 23  (P37)
HY5WZ-17/45TL 25  (P37)
HY5WZ-51/134TL 26  (P37)
HY5WR-10/27TL 27  (P38)
HY5WR-17/45TL 28  (P38)
HY5WR-51/134TL 29  (P38)

















 

 

Contact us if you need more details on Over-Voltage Protector. We are ready to answer your questions on packaging, logistics, certification or any other aspects about a. C. Power System、Lightning Arrester. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : MOA Without Gaps

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