Basic Info.
Type
Power Source Arrester
Structure
Zinc Oxide Arrester
Installation
Parallel Arrester
Operation Voltage
High Voltage
Function
Protect Electrical Devices in a.C.Power System
Features
Reduced Line Maintenance,Good Sealing,Explosion-Pr
Origin
Jiangyin Yunfeng, China
Product Description
Abbreviations given in Tables
Usys---Nominal system voltage
Umcov---Continuous operating voltage
Urat---Rated voltage of MOA
Ures--Residual voltage of MOA
U1mA---Reference voltage at 1mA d.c. Current
Uref---a.c. Reference voltage atresistive currnt1mA
12ms2ms---2ms rectangular current withstand
Uimp.spv---Impulse sparkover voltage
Uacsp---Power frequency discharge voltage
Hovrl---Overrall height
Hunit---Unit height
Hbas---Insulating base height
Dmax---Maximum shell diameter
Lspec---Specific creepage path
MOA for Generator and Electromotor Protection
Technical parameters of MOA for generator and electomotor protection
Type of MOA | Usys | MOA Urat | Umcov | Ures ≤kV(P) | 1mA Uref ≥kV | I2ms A | Mass kg | Fig. (P39) |
KV(r.m.s) | Steep | Lightning | Switching |
HY5(2.5)WD-4./9.5 | 3.15 | 4 | 3.2 | 10.7 | 9.5 | 7.6 | 5.7 | 400 | 1.0 | 38 |
HY5(2.5)WD-8/18.7 | 6.3 | 8 | 6.3 | 21.0 | 18.7 | 15.0 | 11.2 | 400 | 1.6 | 38 |
HY5(2.5)WD-13.5/31 | 10.5 | 13.5 | 10.5 | 34.7 | 31.0 | 25.0 | 18.6 | 400 | 1.8 | 39 |
HY5WD-17.5/40 | 13.8 | 17.5 | 13.8 | 44.8 | 40.0 | 32.0 | 24.4 | 400 | 2.0 | 39 |
HY5WD-20/45 | 15.4 | 20 | 15.8 | 50.4 | 45.0 | 36.0 | 28.0 | 400 | 2.2 | 40 |
HY1.5WD-2.4/6 | 3.15 | 2.4 | 1.9 | / | 6.0 | 5.0 | 3.4 | 400 | 1.0 | 38 |
HY1.5WD-4.8/12 | 6.3 | 4.8 | 3.8 | / | 12.0 | 10.0 | 6.8 | 400 | 1.0 | 38 |
HY1.5WD-8/19 | 10.5 | 8 | 6.4 | / | 19.0 | 15.9 | 11.4 | 400 | 3 | 38 |
Three phases combined MOA
Theer-phases-in-one combination polymeric housed MOA is designed for protecting 35kv(or lower) neutral-point non-earthing electrical equipments form damage due to over-voltage.Because of the special structure and excellent V-I characteristic of ZnO varistor,its protective performance,reliability and service life are improved.Many actual operations prove that,besides limiting lightning over-voltage,it also can limit over-voltages between phase to phase and phase to ground by switch-on or switch-off of vacuum swithch. Thus protecting electrical equipments insulation and vacuum switch from flashover between phases and phase to ground. Because of its excellent protection capabilities,one set of three-phase combined MOA can replace six sets of ordinary MOAs.
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
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.
Address:
No3, Naxiang Rd. Yunting Street, Jiangyin City, Wuxi City
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Electrical & Electronics
Management System Certification:
ISO 9001, ISO 20000, OHSAS/ OHSMS 18001
Company Introduction:
Jiangyin Yunfeng Electric Equipment Co., Ltd. is located in Jiangyin City, Wuxi City, Jiangsu Province, China. Founded in 1990, our company is one of the earliest manufacturers which develop 12kV indoor AC high voltage load switches and fuse-combination units with fuse tripping devices in China.
It is also a member of High Voltage Switch Branch of China Electrical Equipment Industrial Association and a member of Jiangsu Provincial Electrical Equipment Industrial Association.
Our company covers a land area of 32, 000m² And a construction area of 26, 000m² . Now, our company has 145 empolyees, 30% of whom are professional technicians. Our company possesses modern office equipment, excellent modern manufacturing processing equipment and all kinds of professional testing equipment.
Our company has more than ten utility models and invention patents. Moreover, we have passed ISO9001: 2008 Qualiy Management System Certification.
The main products of our company are high voltage load switches and circuit breakers of three voltage grades, namely 12kV, 24kV and 40.5kV. We supply high quality and reasonable price.
We stick to the principle"Quality first, service first" "Continuous impovement and innovation to meet the customers" for management and "zero defect and zero complaints′ as the quality objective.
We are willing to Research Unremittingly, focusing on Quality Dedicatedly and casting Reputation Continuously. And we wish that Yunfeng will become China′s largest high voltage load switch supplier and be your best choice.