YH5(10)W-15 / YH5(10)W-15J Surge Arrester

The YH5(10)W-15/YH5(10)W-15J is a 15kV gapless polymer surge arrester designed for overhead distribution transformer protection. Rated for 5kA/10kA nominal discharge current, it safely diverts lightning and switching overvoltage energy to ground. IEC60099-4:2014 compliant, it features a stainless steel upper terminal, high-quality zinc oxide varistor, and robust heavy pollution withstand performance.

product details

Product Overview

The YH5(10)W-15 and YH5(10)W-15J are 15kV-rated gapless surge arresters engineered to protect overhead distribution transformers from damaging overvoltage events. Featuring polymer housings and high-quality zinc oxide varistors, they rapidly shunt lightning and switching surge energy to ground, preventing equipment failure. Fully compliant with IEC60099-4:2014, these arresters are built for reliable operation in heavy pollution environments and at altitudes up to 1000 meters.

Product Features

◆ Gapless design with high-quality zinc oxide varistors (available in 35mm, 38mm, 40mm, or 42mm sizes).
◆ Excellent surge protection: lightning impulse residual voltage ≤45kV (crest), steep current impulse residual voltage ≤51kV (crest), switching impulse residual voltage ≤38.5kV (crest).
◆ High energy handling: withstands long duration current impulses up to 250A and high current impulses up to 100kA (crest).
◆ Durable polymer housing in dark grey or light grey, with stainless steel 304 upper terminal (M12) and lower terminal (M10).
◆ Rated frequency 50Hz, maximum continuous operating voltage 12.7kV, with multiple short-circuit current ratings available.

Product Advantages

● Gapless zinc oxide technology ensures instantaneous response to overvoltages with no power-follow current, maximizing protection reliability.
● Comprehensive surge coverage against lightning, steep current, and switching impulses for complete transformer safeguarding.
● Lightweight polymer housing provides superior mechanical durability, excellent pollution performance, and safer failure behavior compared to porcelain.
● IEC60099-4:2014 compliance guarantees internationally recognized performance and safety for global power distribution networks.

Application Scenarios

◆ Overhead distribution line transformer surge protection (primary application).
◆ Class 1 or Class 2 distribution-type arrester deployments in rural and urban power grids.
◆ Lightning-prone regions demanding robust, fast-acting overvoltage suppression.
◆ Heavy pollution environments at altitudes up to 1000 meters, where reliable outdoor insulation is essential.

Technical parameter

Electrical characteristics	Specification		Unit
Rated voltage of Surge arrreser	15		kV
Nominal discharge current	5	10	kA
Rated frequency	50		Hz
Maximum continuous operating voltage	12.7		kV
Steep current impulse residual voltage	51		kV(Crest)
Lightning Impulse residual voltage	45		kV(Crest)
Switching Impulse residual voltage	38.5		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