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18KV 10kA Polymer Surge Arrester

surge arresters

18KV 10kA Polymer Surge Arrester

  • Model YH10W-18

In station and distribution systems, M.V. Polymer Surge Arresters are employed to guard equipment against damage from atmospheric factors (particularly lightning strikes) and operational circumstances. 
Oxides of Metals When energy systems experience regular surges, surge arresters without gaps are intended to stop potential damage while having no adverse effects on the systems during normal voltage operation. The non-linear properties of metal-oxide varistors between the voltage and current scales are the source of this unique feature of gapless arresters. Comparing the non-linear feature to silicon carbide surge arresters, it is significantly higher. 

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NORMAL SERVICE CONDITIONS

 1.The ambient temperature: -40°C ~+40°C
 2.The altitude above sea level :not exceed 1000-2000m (the altiplano area should be indicated when order)
 3.Earthquake intensity: not higher than 7 degrees;
 4.Maximum wind velocity :less than 35m/s.
 5.The filthy area should be given clear indication.

PRODUCT FEATURE

The zinc oxide lightning arrester is the most advanced over-voltage protector in the world. Due to make the resistor disc of core component mainly adopt zinc oxide arrester. Compared with the conventional silicon carbide arrester, this   prescription of the product improves greatly the volt-ampere characteristics of the resistor disc and increase through- current capability at over-voltage so as to bring a rad local-changes for the characteristics of the arresters.

* Rated Voltage(Ur): 3kV – 36kV
* Nominal Discharge Current(In): 5kA or 10kA
* Long Duration Current Impulse: 150A or 250A
* High Current Impulse(Imax): 65kA or 100kA
* Pressure relief capability: 16kA or 20kA
* Creepage distance: ≥31mm/kV
1wg2

PRODUCT parameter

10kA Series

Arrester type

Rated voltage Ur (kV)
Max. continues operating voltage Residual Voltage (kV)
as per IEC as per ANSI/IEEE 1/10 μs Steep current impuse 8/20μs Lightning current impulse 30/60μs Switching current impulse
Uc (kV) MCOV (kV)
Y10W-3/9 3 2.4 2.55 11.3 9 8.9
Y10W-6/18 6 4.8 5.1 20.5 18 16
Y10W-9/27 9 7.2 7.65 31 27 24
Y10W-10/30 10 8.0 9.3 34.1 30 26.6
Y10W-11/33 11 8.8 9.35 38 33 29
Y10W-12/36 12 9.6 10.2 41.5 36 30.6
Y10W-15/45 15 12.0 12.7 52 45 38.3
Y10W-18/54 18 14.4 15.3 62 54 46
Y10W-21/63 21 16.8 17 72.5 63 53.5
Y10W-24/72 24 19.2 19.5 82.5 72 61.2
Y10W-27/81 27 21.6 22 93.2 81 69
Y10W-30/90 30 24.0 24.4 104 90 80
Y10W-33/99 33 26.4 28.0 113.8 99 84.2
Y10W-36/108 36 28.8 29.0 124.2 108 91.8

5kA Series

Arrester type Rated voltage Ur (kV) Max. continues operating voltage Residual Voltage (kV)
as per IEC as per ANSI/IEEE 1/10 μs Steep current impuse 8/20μs Lightning current impulse 30/60μs Switching current impulse
Uc (kV) MCOV (kV)
Y5W-3/9 3 2.4 2.55 11.3 9 8.9
Y5W-6/18 6 4.8 5.1 20.5 18 16
Y5W-9/27 9 7.2 7.65 31 27 24
Y5W-10/30 10 8.0 9.3 34.1 30 26.6
Y5W-11/33 11 8.8 9.35 38 33 29
Y5W-12/36 12 9.6 10.2 41.5 36 30.6
Y5W-15/45 15 12.0 12.7 52 45 38.3
Y5W-18/54 18 14.4 15.3 62 54 46
Y5W-21/63 21 16.8 17 72.5 63 53.5
Y5W-24/72 24 19.2 19.5 82.5 72 61.2
Y5W-27/81 27 21.6 22 93.2 81 69
Y5W-30/90 30 24.0 24.4 104 90 80
Y5W-33/99 33 26.4 28.0 113.8 99 84.2
Y5W-36/108 36 28.8 29.0 124.2 108 91.8

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