Product Description

Designed and manufactured in accordance with relevant IEC standards, porcelain-housed surge arresters are suitable for power systems across various voltage levels.

Porcelain-type surge arrester their primary function is to limit lightning and switching overvoltages, thereby protecting transformers, switchgear, and other critical power system equipment. Widely used in substations, transmission lines, and outdoor distribution systems, they are a proven technology for high-voltage power system protection.

These porcelain-type surge arrester feature gapless zinc-oxide resistor elements encapsulated within a high-strength porcelain housing, ensuring excellent electrical insulation and mechanical strength. They utilize a sealed structure and a pressure-relief design; in the event of an internal fault, the pressure-relief device releases internal pressure to mitigate safety risks associated with housing rupture while maintaining long-term operational stability.

The external porcelain housing offers superior heat resistance, weatherability, and UV resistance, making it capable of withstanding outdoor temperature fluctuations and prolonged sun exposure.

Unlike composite-housed arresters, porcelain-housed arresters do not suffer from aging, chalking, or discoloration, making them ideal for applications requiring high mechanical strength and housing stability.

Note: Customers should select the appropriate model based on system rated voltage, continuous operating voltage, nominal discharge current, and lightning impulse withstand requirements. We can also customize the creepage distance according to specific site pollution levels and installation environments to meet the overvoltage protection needs of substations, power plants, and industrial distribution systems. Optional accessories such as discharge counters, online monitoring devices, and grading rings are also available.

Product Specifictions

Type	Rated voltage (kV)	Arrester rated voltage (kV)	Continuous operating voltage (kV)	DC 1mA reference voltage (kV)	Residual voltage at nominal discharge current (kV)	Residual voltage at steep current impulse (kV)	2ms square wave withstand capability (A)
HYWS‑3.8/17	3	3.8	2.0	7.5	17.0	19.6	100
HY5WS‑7.6/30	6	7.6	4.0	15.0	30.0	34.5	100
HY5WS‑12.7/50	10	12.7	6.6	26.0	50.0	57.5	150
HY5WS‑17/50	10	17	13.6	26.5	50.0	57.5	150
HY5W‑7.6/27	6	7.6	4.0	14.5	27.0	31.0	200
HY5WZ‑12.7/45	10	12.7	6.6	24.0	45.0	51.8	200
HY5WZ‑17/45	10	17	12.7	24.0	45.0	51.8	200
HY5WZ‑52/134	35	52	10.8	78.0	134	154	400
HY2.5WD‑7.6/19	6.3	7.6	4.8	11.5	19.0	21.9	200, 400
HY2.5WD‑12.7/31	10.5	12.7	6.6	19.0	31.0	35.7	200, 400
HY2.5WD‑16.7/40	13.8	16.7	9.0	25.0	40.0	46.0	400
HY2.5WD‑19/45	15.75	19	10.0	28.5	45.0	51.8	400
HY5WR‑7.6/27	6	7.6	4.8	13.8	27.0	20.8	400
HY5WR‑12.7/45	10	12.7	6.6	23.0	45.0	35.0	400
HY5WR‑52/134	35	52	23.4	73.0	134	105	400

Our Product Advantage

01/

Features a high-strength porcelain housing offering excellent mechanical properties and impact resistance; it is aging-resistant and suitable for long-term outdoor use.

02/

Zinc oxide (MOV) valve blocks provide rapid response and stable residual voltage, effectively suppressing various overvoltages.

03/

Complies with the IEC 60099-4 international standard; every unit undergoes rigorous inspection before leaving the factory.

04/

Easy to install and maintain; a wide range of accessories is available to meet diverse selection requirements for power transmission and distribution projects.

Operating Environment

1. Ambient temperature: -40°C to +40°C

2. Altitude ≤ 1800m (specifications for specific altitude zones can be provided upon request).

3. Suitable for environments with a pollution level up to Class IV; free from severely corrosive or explosive media.

Shipment

FAQ

Q1: What is the difference between porcelain-housed surge arresters and silicone rubber surge arresters?

A2: Surge arresters made of porcelain feature a durable porcelain housing that provides superior resistance to aging, chalk, and UV rays, and requires virtually no maintenance for extended periods of outdoor work. In contrast, silicone rubbers are lightweight and do not break. Porcelain models are best suited for fixed, long-lasting fixtures where greater stability is required.

Q2: How stable is the performance of porcelain-housed surge arresters?

A2: Porcelain-housed surge arresters provide high mechanical strength, resistance to deformation, and stable insulation performance. They are unaffected by prolonged sun exposure and can withstand temperature fluctuations well, making them ideal for high-energy outdoor applications in open or highly polluted areas.

Q3: What standards do the products meet? Are in-house surveys conducted?

A3: Products are manufactured strictly in accordance with IEC standards. Each class goes through a thorough series of routine tests to ensure stability of performance, and full test reports are available for inspection validation and publication.

Q4: Can the specifications be customized?

A4: We support customization of creepage distance, high-altitude adaptation, and specifications tailored to specific pollution levels, meeting the requirements of various high-voltage transmission and substation industries.

Q5: What are the payment terms and lead times?

A5: Standard terms require a 30% down payment, although they can be negotiated once a firm partnership is established. Due to the factory's high production capacity, the standard lead time is 15 working days, depending on the specifics of the order.

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