24kv Surge Arrester Polymer 5ka 10ka Lightning Arrester

Product Description

 

Product Description

Zinc-Oxide arrester is used for protection of outdoor distribution overhead line, transformer, cable connector and electric equipment from being damaged by lightning Impulse voltage and operated over-voltage.

How does ZnO varistor work? ZnO has good non-linear Volt-Ampere characteristics which flowing current is tiny when working under normal voltage. However, when there's over-voltage, its non-linear Volt-Ampere characteristics takes protection effect on leakage and breaking current, as the resistance will decrease rapidly and leak the energy of over-voltage.

Products are completely in accordance with IEC60099-4 standard.
 

 

Normal service conditions

1.The ambient temperature is not high than +40 celsius and not lower than -40 celsius.

2.The altitude above sea level do not exceed 1000-2000m.(Altiplano area should be indicated when order.)

3.The frequency in AC system is 50Hz or 60Hz.

4.Power frequency voltage which has been bearing on arrester for a long time do not exceed continuous operating voltage.

5.Max. wind speed do not exceed 35m/s.

6.Apply to the area where earthquake intensity is not exceed 8 degree.

7.The filthy area should be indicated before.

 

Product Parameters

Electrical characteristics	Specification		Unit
Rated voltage of Surge arrreser	24		kV
Nominal discharge current	5	10	kA
Rated frequency	50		Hz
Maximum continuous operating voltage	19.5		kV
Steep current impulse residual voltage	82		kV(Crest)
Lightning Impulse residual voltage	72		kV(Crest)
Switching Impulse residual voltage	62		kV(Crest)
Long duration current impulse withstand voltage	150	250	A
High current impulses	65	100	kA (Crest)
Rated Short-circuit current	20 / 12 / 6 / 0.6 ± 0.2		kA
Class of Surge arrester	Class 1 or Class 2
Application	Distribution type
With or without gap	Gapless
Designation of arrester	Design B
Spare parts
NEMA A or B mounting bracket	with/without
Disconnector	with/without
Earth lead	with/without
Bird guard cap	with/without
Line clamp	with/without
Upper terminal (incoming line) bolt size	M12
Lower termina (outgoing line) bolt size	M10
Material
Upper terminal	Stainless steel 304
Housing	Polymer type
Color of housing	Dark grey / light grey
Varistor	High quality zinc oxide varistor
Size of Varistor	35mm / 38mm /40mm / 42mm
Package
Qty/package	3		pc/carton
Service conditions
Environment maximum temperature	40		ºC
Pollution level	Heavy
Altitude	≤1000		Meter
Standard	IEC60099-4:2014

 

Our Advantages

1.The low weight facilitates installation and permits erection in limited spaces and at almost all angles.

2.No continuous current and low current impulse residual voltage.

3.Excellent pollution and short circuit performance.

4.Safe to touch when energised by accident.                                                    

5.Stable U-I characteristics,even after multiple strikes.

6.Resistant to UV,ozone,chemicals,mechanical abuse.

7.Fully qualified following IEC60099-4.   

8.Using best material.9.Type test report from KEMA lab

Packaging & Shipping

Package:1 pc of cut out fuse is packed in a carton.
Outer packing:Pallet or wooden case.
Or as per customers' request.  

Certifications

After Sales Service

Large quantity of cut out fuse can be by sea or by air according to customers' instruction.
Several pieces of samples can be shipped by express.