YH5(10)W-10 Surge Arrester

The YH5(10)W-10 is a 10kV gapless polymer surge arrester designed for overhead distribution transformers. Rated for 5kA/10kA nominal discharge current, it protects equipment from lightning and switching overvoltages by shunting surge energy to ground. Compliant with IEC60099-4:2014, it features a stainless steel upper terminal, high-quality zinc oxide varistor, and heavy pollution withstand capability.

product details

Product Overview

The YH5(10)W-10 surge arrester is a gapless, polymer-housed overvoltage protection device specifically engineered for overhead distribution lines. Utilizing high-quality zinc oxide varistors, it rapidly diverts excessive energy from lightning strikes and switching surges to ground, safeguarding transformers and connected equipment. Designed and tested in accordance with IEC60099-4:2014, it offers reliable performance under heavy pollution conditions and at altitudes up to 1000 meters.

Product Features

◆ Rated voltage 10kV with nominal discharge current options of 5kA and 10kA.
◆ Gapless design with high-quality zinc oxide varistor (available in 35mm, 38mm, 40mm, or 42mm sizes).
◆ Durable polymer housing in dark grey or light grey, with stainless steel 304 upper terminal.
◆ Excellent surge protection performance: lightning impulse residual voltage ≤30kV (crest), steep current impulse residual voltage ≤36kV (crest).
◆ High energy handling: long duration current impulse withstand up to 250A, high current impulse withstand up to 100kA.
◆ Flexible configuration with optional NEMA mounting bracket, disconnector, earth lead, bird guard cap, and line clamp.
◆ Suitable for heavy pollution environments, maximum ambient temperature 40°C, rated frequency 50Hz.

Product Advantages

● Comprehensive transformer protection against multiple overvoltage threats, minimizing equipment damage and downtime.
● Gapless zinc oxide technology ensures fast, reliable response with no follow current issues.
● Polymer housing offers superior mechanical strength, light weight, and excellent pollution performance compared to porcelain alternatives.
● Flexible spare parts and accessory options (disconnector, bracket, bird guard, etc.) simplify installation and maintenance.
● IEC60099-4:2014 compliance guarantees internationally recognized safety and performance standards.

Application Scenarios

◆ Overhead distribution line transformer protection (primary application).
◆ Distribution-type surge protection for rural and urban power networks.
◆ Lightning-prone areas requiring Class 1 or Class 2 surge arresters.
◆ Environments with heavy pollution levels and altitudes up to 1000 meters.

Technical parameter

Electrical characteristics	Specification		Unit
Rated voltage of Surge arrreser	10		kV
Nominal discharge current	5	10	kA
Rated frequency	50		Hz
Maximum continuous operating voltage	8.4		kV
Steep current impulse residual voltage	36		kV(Crest)
Lightning Impulse residual voltage	30		kV(Crest)
Switching Impulse residual voltage	26.8		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