MEWOI-YH Series Zinc Oxide Lightning Arrester
MEWOI-YH Series Zinc Oxide Lightning Arrester
MEWOI-YH Series Zinc Oxide Lightning Arrester

MEWOI-YH Series Zinc Oxide Lightning Arrester

OEM/ODM Testing Instruments Manufacturer

Contact Us for QuotationEmail：mewoi@mewoi.comWhatsapp: +8618620373879
Website Guide:www.mewoi.com→Guide→Product Name→Selection Guide

INTRODUCTION

Lightning arrester is the basis of insulation coordination of various electrical equipment (transformer, reactor, capacitor, generator, motor, PT, CT, circuit breaker, contactor, etc.) in power system. The internal and external insulation index (short-inch power frequency voltage withstand, lightning impulse voltage withstand and operation impulse voltage withstand) of all electrical equipment in power system is determined by the protection performance of lightning arrester, commonly known as "oxidation". Zinc arrester is a new generation of arrester, which has been popularized in the world since 1980s by the United States, Japan and other countries. It is the most advanced product of conventional arrester. With excellent non-linear volt-ampere characteristics, the steep wave response is fast and the flow capacity is large. The use of self-blowing gap and uniform voltage irradiation structure reduces the dispersion of discharge, and the use of composite insulating coat with small impact coefficient conforms to the development trend of miniaturization, safety and rabbit maintenance of international power products. Compared with traditional inorganic materials such as ceramics and glass, polymer-organic composites have the advantages of small size, light weight, pollution resistance, non-cleaning, explosion-proof and shock-proof.

MEWOI-YH Series.011.jpg

Usage and Execution Standard

This product is used in power generation, transmission, substation and distribution systems with AC 220 kV and below. It is used to limit the amplitude of lightning and operating overvoltage in the system to the specified level. It is the basic equipment for insulation coordination of the whole system. At the same time, this product can not be used to restrict the harmonic elimination of resonance overvoltage system. It needs to adopt other ways. The model of this product is compiled according to JBT8459-1996 "Modeling Method of Arrester Products", and the gap-free product is in accordance with GB11032-2000 "AC Gapless Metal Oxide Arrester" standard; the gap product is in accordance with JB9672-2005 "Connected Gap Metal Oxide Arrester". Important parameters and configurations not clearly defined in the above standards shall be revised and implemented in accordance with DL/T6201997 "Overvoltage Protection and Green Coordination of AC Electrical Devices".

Normal Working Conditions

Enviroment Temperature
no higher than + 40C, no lower than - 40C
Altitudeno more than 3000m
Frequency Of Power Supply50 + 2Hz; 60 + 2Hz
Maximum wind speed35m/s
Rabbit Cleaning ConditionsMedium Dirty and Below
For gapless productsFor non-gap products, the long-term applied power frequency voltage shall not exceed the continuous operating voltage of the arrester.
For products with gapThe short-term power frequency voltage rise at installation point shall not exceed the rated voltage of arrester.
For long-term useIn the following abnormal conditions, lightning arresters should be specially manufactured. 
1，the temperature or elevation exceed the standard (plateau, hot strip, cold zone, fully enclosed cabinet, near electric furnace, etc.)
2，there are serious tidal erosion gas impurities (water, salt field, chemical plant, etc.),
3，strong ultraviolet radiation (plateau, strong sunshine arid land, etc.). Areas, etc.)

Technical Specification Datasheet

Following is the typical parameter table of conventional arrester, which is arranged from low to high according to the voltage level, so that users can find it easily. Each national standard model can be derived from several models of products, limited to space, not a list. If users have suspicions on the model, they can directly consult the system nominal voltage column of our company's technical department. The data of * is the motor rated voltage corresponding to the motor protection arrester. In the power frequency discharge voltage column, the data of * is the effective value of the power frequency withstanding voltage of the high voltage arrester above 110 kV. At the end of the paper, it is pointed out that the shock current corresponding to the residual impulse voltage of 3060 lightning arrester can be matched with most products such as disconnectors, counters and other accessories. The disconnector is equipped with "L" and the counter is equipped with "J" after the model.

Selection Guide

ItemVoltage Level(KV)Working PlaceSystem nominal voltage（KV）RMSModel No.

Rated V(KV

)Effective value

Gapless ArresterArrester With Gap

Peak Residual Voltage

(KV) no more than

2000 Square Wave 

Current Capacity (A)

4/10 Large Current Tolerance (KA)






Continue to operate V(KV)DC1mA(KV)no less thanMax leak(uA) at 0.75 times DC reference voltageP-frequency discharge-V (KV) RMS not less thanPeak value of 1.2/50 impulse discharge-V(KV) is not greater thanMax-conductive current（uA）8/20 Lightning impulse current30/6Operating impulse current1/4Steep slope impulse current

1Low VoltageDistribution0.22YH1.5W-0.28/1.30.280.240.650---1.3--7525
2Low VoltageDistribution0.38
YH1.5W-0.5/2.60.50.42
1.250-
--2.6
--7525
3Low VoltageMotor0.66YH2.5WD-1.3/3.6
1.3
0.951.8
50---3.6--20040
4Low VoltageMotor1.14YH2.5WD-2.6/7.2
2.61.9
3.650-
--

7.2

--20040
53KVDistribution3YH5WS-3.8/1.5
3.82.0
7.550---15.012.817.3
7540
63KVDistribution3
YH5WS-5/1554.07.550-
--15.0
12.817.375
40
73KVDistribution3YH5CS-3.8/13.53.8

-

--9.013.52013.5
11.4
15.0
7540
83KVPower plant3YH5WZ-3.8/13.53.82.0
7.2
50-
--13.511.515.5
20065
93KVPower plant3
YH5WZ-5/13.55
4.07.250-
--13.511.515.5
20065
103KVPower plant3YHSCZ-3.8/12.03.8---8.012.02012.010.213.520065
113KVCapacitive3
YH5WR-3.8/13.5
3.8
2.0
7.2
50-
--13.510.5-40065
123KVCapacitive3YH5WR-5/13.55
4.07.250-
--13.510.5-40065
133KVCapacitive3YH5CR-3.8/12.03.8---8.012.02012.0
9.6-40065
143KVGenerator3.15
YH5WD-3.8/9.5
3.82.05.750---9.57.610.740065
153KVGenerator3.15YH5WD-4/9.543.155.750---9.57.610.740065
163KVGenerator3.15YH5CD-3.8/8.63.8---7.58.6208.6
6.99.840065
173KVMotor3.15YH2.5WD-3.8/9.53.82.05.750---9.57.610.740065
183KVMotor3.15YH2.5WD-4/9.543.155.750---9.57.610.740065
193KVMotor3.15YH2.5CD-3.8/8.63.8---7.58.6208.6
6.99.840065
203KVNeutral point3.15YH1.5W-2.4/62.4
1.93.450---6.05.0-20065
216KVDistribution6
YH5WS-7.6/307.6
4.015.050---30.0
25.634.67540
226KVDistribution6YH5WS-10/3010
8.015.050---30.0
25.634.67540
236KVDistribution6YH5CS-7.6/277.6
---16.027.02027.022.530.0
7540
246KVPower Plant6
YH5WZ-7.6/277.64.014.450---27.023.0
31.0
20065
256KVPower Plant6YH5WZ-10/27108.014.4
50---27.023.0
31.0
20065
266KVPower Plant6YH5CZ-7.6/247.6
---16.0
242024.0
20.427.020065
276KVCapacitive6
YH5WR-7.6/27
7.64.014.450---27.021.0-40065
286KVCapacitive6YH5WR-10/27108.014.4
50---27.021.0-40065
296KVCapacitive6YH5CR-7.6/247.6
---16.0
242024.0
19.5
-40065
306KVGenerator6.3
YH5WD-7.6/18.77.64.011.250---18.715.021.040065
316KVGenerator6.3YH5WD-8/18.77.64.011.250---18.715.021.040065
326KVGenerator6.3YH5CD-7.6/177.6
---15.0
17.02017.013.819.640065
33
6KVMotor
6.3
YH2.5WD-7.6/18.77.64.011.250---18.715.021.020065
346KVMotor6.3YH2.5WD-8/18.786.311.250---18.715.021.020065
356KVMotor6.3YH2.5CD-7.6/177.6--5015.0
17.02017.0
13.819.620065
366KVNeutral6.3
YH1.5W-4.8/124.83.86.8----12.010.0-20065
3710KVDistribution10YH5WS-12.7/5012.76.62550---5042.557.57540
3810KVDistribution10YH5WS-17/501713.6
25
50
---5042.557.57540
3910KVDistribution10YH5CS-12.7/4512.7---26.0
4520
4538.451.07540
4010KVPower Plant10
YH5WZ-12.7/4512.76.624
50---45
38.351.8
200
65
4110KVPower Plant10
YH5WZ-17/45
1713.62450---45
38.351.8
200
65
4210KVPower Plant10YH5CZ-12.7/41
12.7
---26.041.02041354620065
4310KVCapacitive10YH5WR-12.7/46
12.7
6.62450---46
35-400
65
4410KVCapacitive10YH5WR-17/4617
13.624
50---46
35-400
65
4510KVCapacitive10YH5CR-12.7/4112.7
---26.041.02041
33-400
65
4610KVGenerator10.5YH5WD-12.0/3112.7
6.618.650---312534.7400
65
4710KVGenerator10.5YH5WD-13.5/3113.510.518.650---312534.7400
65
4810KVGenerator10.5YH5CD-12.7/2812.7---25.028.0202822.53240065
4910KVGenerator13.8
YH5WD-17.5/4017.5
13.824.450---403244.840065
5010KVGenerator15.75
YH5WD-20/4520.015.752850---45
3650.4400
65
5110KVGenerator18.0
YH5WD-23/51
231831.950---51
40.857.2
40065
5210KVGenerator20.0YH5WD-25/56.2
252035.450---56.2
4562.9
40065
5310KVMotor10.5YH2.5WD-12.7/3112.76.618.650---31
2534.720065
5410KVMotor10.5YH2.5WD-13.5/3113.510.518.650---31
2534.720065
5510KVMotor10.5YH2.5CD-12.7/2812.7---25.0
28.0202822.52
20065
5610KVNeutral10.5YH1.5W-8/19
86.411.450
---19.0
15.9-40065
5710KVNeutral13.8YH1.5W-10.5/2310.58.414.9
50---23.019.2-40065
5810KVNeutral15.75YH1.5W-12/2612
9.617.050---26.0
21.6-40065
5910KVNeutral18YH1.5W-13.7/29.213.7
11.019.5
50---29.2
24.3-40065
6010KVNeutral20YH1.5W-15.2/31.715.2
12.221.650---31.7
26.4-40065
61
35KVPower Plant35
YH5WZ-51/13451
40.87350---134
11415440065
6235KVPower Plant35YH5WZ-42/1344223.47350---134
11415440065
6335KVPower Plant35YH5CZ-42/12442---8012420124
10014340065
6435KVCapacitive35YH5WR-51/134
51
40.87350---134
105-40065
6535KVCapacitive35
YH5WR-42/1344223.47350---134
105-40065
6635KVCapacitive35YH5WR-42/12442
---8012420124
100-40065
6735KVTransmission Line35YH5WX-51/134
51
40.87350---134
11415440065
6835KVTransmission Line35YH5WX-54/1505443.277
50---15012816940065
6935KVTransmission Line35
YH5CX-42/12042---80
12020120
10013840065
7035KVTransmission Line35YH5CX-42/15042---8015020150
128169400
65
7135KVNeutral35YH1.5W-30/80
30
244450---8067.5-400
65
7266KVPower Plant66
YH5WZ-84/22184
67.212150---221
18825460065
7366KVPower Plant66YH5WZ-90/2359072.5130
50---23520127060065
7466KVPower Plant66YH10WZ-84/22184
67.212150


221188
248
600100
7566KVTransmission Line66YH10WZ-90/23590
72.513050


235
201264600100
7666KVTransmission Line66YH5WX-96/250
96
7514050


250
213288
60065
7766KVTransmission Line66YH5WX-96/27596
7515450


275
23431560065
78110KVPower Plant110YH5WZ-100/260
100
7814550


260
22129960065
79110KVPower Plant110YH5WZ-102/266102
79.614850


266
22630560065
80110KVPower Plant110YH5WZ-108/281108
84
15750


28123932360065
81110KVPower Plant110YH10WZ-100/260100
78145
50


260
221291600100
82110KVPower Plant110YH10WZ-102/266102
79.6148
50


266
226297
600100
83110KVPower Plant110YH10WZ-108/281108
8415750


281
239315
600100
84110KVTransmission Line110YH5WX-108/281
1088415750


281
239323
60065
85110KVTransmission Line110YH5WX-108/309108
84173
50


309
26334860065

To be continued

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label: Zinc Oxide Lightning Arrester
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