material: ZnO varistor, silicon rubber housing certification:ISO9001 package: Carton confirm to IEC60099-4, IEC37-199/CDV

 DEFINITION:

Lightning Arrester/ Surge Arrester: A protective device for limiting surge voltages by discharging or bypassing surge current, and it also prevents the flow of follow current while remaining capable of repeating these functions.

Gapless metal-oxide type:

4 classifications:

                                                                   i.              Station class: best: overall protective durability quality

                                                                 ii.              Intermediate class

                                                                iii.              Distribution class (heavy, normal, light duty)

                                                                iv.              Secondary class (for voltages 999V or less)

The housing/enclosure construction of surge arresters can be of either polymer or porcelain.

How to Select a Lightning Arrester?

The primary objective in arrester application is to select the lowest rated surge arrester that will provide adequate protection of the equipment insulation and be rated such that it will have a satisfactory service life when connected to the power system. An arrester of the minimum practical rating is preferred because it provides the highest margin of protection for the equipment insulation system. Higher arrester ratings will increase the capability of the arrester to survive on specific power system but reduce the margin of protection provided for the insulation level of the equipment that it is protecting.

  17KV 5KA Electrical Polymer Spark Arrester

Technicial Parameter

MOA Type	Sys R.V	MOA R.V	MCOV	D.C.U1mA	1/10μs steep current impulse	8/20μs lightning current impulse		30/60μs Switching current impulse		2ms rectangular current impulse withstand	4/10μs high current impulse withstand
	KV(r.m.s)			≥KV	≤KV					A	KA
HY5WS-3.8/15	3	3.8	2.0	7.5	17.3		15		12.8	75	40
HY5WS-5/15		5	4.0	8.0	17.3		15		12.8	90	65
HY5WS-7.6/30	6	7.6	4.0	15.0	34.5		30		25.5	75	40
HY5WS-10/30		10	8.0	15.0	34.5		30		25.5	90	65
HY5WS-12.7/50	10	12.7	6.6	25.0	57.5		50.0		38.5	75	40
HY5WS-17/50		17	13.6	25.0	57.5		50.0		38.5	90	65

 Normal service conditions:

The ambient air temperature is no higher than +40 degree. no lower than -40 degree.

The altitude above sea level does not exceed 2000m

Power frequency 48Hz~62Hz

Maximum wind speed does not exceed 35m/s

The earthquake intensity does not exceed 7 degrees

The voltage that long-time exerted shouldn't exceed its Max MCOV