Polymer Surge Arrester

Polymer surge arresters are critical protective devices used in electrical power systems to safeguard equipment from transient overvoltages caused by lightning strikes and switching operations.

Polymer Surge Arrester Products Description

Product Overview:

Polymer surge arresters are critical protective devices used in electrical power systems to safeguard equipment from transient overvoltages caused by lightning strikes and switching operations. Their advanced polymer construction offers superior performance and durability, making them an essential component in modern power infrastructure.

Technical Specifications:

● Material: Polymeric housing with silicone rubber insulation
● Voltage Rating: Ranges from 3 kV to 765 kV
● Energy Absorption Capacity: High energy handling capability suitable for various applications
● Operating Temperature: -40°C to +85°C
● Creepage Distance: Designed to meet pollution level requirements

Polymer surge arresters are a vital component in modern electrical power systems, offering robust protection against transient overvoltages. Their lightweight, durable construction and excellent weather resistance make them an ideal choice for ensuring the reliability and safety of electrical infrastructure across various applications. With compliance to international standards and a maintenance-free design, polymer surge arresters provide a dependable and cost-effective solution for surge protection.

The Zinc oxide lightning arrester protects the electrical equipment in AC power systems against being damaged by atmospheric over voltage and operational over voltage.

Product Specification:

Nominal Discharge Current 5kA Metal-oxide Lightning Arrester Without Gaps
Type	Rated voltage kV (rms)	Maximum continuous operation voltage kV(rms)	Max.Residual voltage			2000μs Square wave currentimpulse withstandA(peak)	4/10μs High currentimpulse kA (Peak)
Type	Rated voltage kV (rms)	Maximum continuous operation voltage kV(rms)	Steep current impulse kV(peak)	Switching current impulse kV(peak)	Lightning current impulse kV(peak)	2000μs Square wave currentimpulse withstandA(peak)	4/10μs High currentimpulse kA (Peak)
HY5W-3	3	2.55	9.5	7.7	9	100	65
HY5W-6	6	5.1	19	15.4	18	100	65
HY5W-9	9	7.65	28.5	23.1	27	100	65
HY5W-10	10	8.3	36	27	30	100	65
HY5W-11	11	9.5	38.5	30	33	100	65
HY5W-12	12	10.2	38	30.8	36	100	65
HY5W-15	15	12.7	47.5	38.5	45	100	65
HY5W-18	18	15.3	57	46.2	54	100	65
HY5W-21	21	17	66.5	53.9	63	100	65
HY5W-24	24	19.5	76	61.6	72	100	65
HY5W-27	27	21.9	85.5	69.3	81	100	65
HY5W-30	30	24.4	95	76.5	90	100	65
HY5W-33	33	26.8	104	84.7	99	100	65
HY5W-36	36	29	114	92.7	108	100	65
HY5W-42	42	34.1	132.3	100.1	126	100	65

Nominal Discharge Current 10kA Metal-oxide Lightning Arrester Without Gaps
Type	Rated voltage kV(rms)	Maximum continuous operation voltage kV(rms)	Max.Residual voltage			2000μs Square wave currentimpulse withstand A(peak)	4/10μs High currentimpulse kA (Peak)
Type	Rated voltage kV(rms)	Maximum continuous operation voltage kV(rms)	Steep current impulse kV(peak)	Switching current impulse kV(peak)	Lightning current impulse kV(peak)	2000μs Square wave currentimpulse withstand A(peak)	4/10μs High currentimpulse kA (Peak)
HY10W-3	3	2.55	9.5	7.7	9	250	100
HY10W-6	6	5.1	19	15.4	18	250	100
HY10W-9	9	7.65	28.5	23.1	27	250	100
HY10W-10	10	8.3	36	27	30	250	100
HY10W-11	11	9.5	38.5	30	33	250	100
HY10W-12	12	10.2	38	30.8	36	250	100
HY10W-15	15	12.7	47.5	38.5	45	250	100
HY10W-18	18	15.3	57	46.2	54	250	100
HY10W-21	21	17	66.5	53.9	63	250	100
HY10W-24	24	19.5	76	61.6	72	250	100
HY10W-27	27	21.9	85.5	69.3	81	250	100
HY10W-30	30	24.4	95	76.5	90	250	100
HY10W-33	33	26.8	104	84.7	99	250	100
HY10W-36	36	29	114	92.7	108	250	100
HY10W-42	42	34.1	133	100	126	250	100
HY10W-48	48	39	152	126	150	250	100
HY10W-54	54	43	171	139	162	250	100
HY10W-60	60	48	208	160	180	250	100
HY10W-66	66	53.4	230	172	198	250	100

FAQ: Expert Insights on Polymer Surge Arresters

Q: What is the primary function of a polymer surge arrester?
A: A polymer surge arrester is designed to protect electrical distribution and transmission systems from dangerous overvoltage spikes caused by lightning strikes or switching surges, safely diverting the excess current to the ground.
Q: Why choose polymer-housed arresters over traditional porcelain alternatives?
A: Polymer surge arresters offer superior shatter resistance, lighter weight for easier installation, excellent hydrophobic properties, and superior performance in heavily polluted or coastal environments.
Q: What voltage classes are SUNJ polymer surge arresters available in?
A: We manufacture a comprehensive range of surge arresters suitable for various medium and high-voltage distribution networks, typically ranging from 11kV up to 33kV and beyond.
Q: How does silicone rubber housing improve arrester longevity?
A: High-grade silicone rubber provides exceptional UV resistance and hydrophobic characteristics, preventing tracking and flashover even under severe industrial pollution and heavy rainfall.
Q: Can surge arresters be installed in horizontal positions?
A: Yes, many modern polymer surge arresters are engineered with high mechanical strength, allowing for flexible vertical, horizontal, or under-hung installations depending on crossarm configurations.
Q: What maintenance is required for installed polymer surge arresters?
A: They are generally maintenance-free, but routine visual inspections should be performed annually to check for surface contamination, mechanical damage, or disconnections in the ground lead.
Q: Do SUNJ surge arresters comply with international standards?
A: Yes, our arresters are strictly engineered and tested in accordance with global benchmarks such as IEC 60099-4 to ensure maximum reliability and safety.
Q: How do I select the correct rated voltage for my network?
A: Selection depends on your system’s maximum continuous operating voltage (MCOV) and earthing system design. You can contact our technical team for custom load and voltage recommendations.
Q: What causes a surge arrester to fail or disconnect?
A: Extreme overvoltages exceeding the energy absorption rating or direct structural impacts can trigger failure, which is why choosing a reputable manufacturer like SUNJ is vital for grid safety.
Q: Where can I request technical drawings and load data sheets?
A: You can easily download product specifications directly from our website or reach out via our contact page for project-specific engineering support.

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Polymer Surge Arrester More Information

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Polymer Surge Arrester Installation Method Of Polymer Surge Arrester

Installation Method

1. Hanging installation
Hanging installation is a common way to install lightning arresters, that is, the arrester is installed above the conductor, and the arrester is hung in the air above the conductor through hooks and other fixing tools to achieve the purpose of lightning protection. This installation method is suitable for various occasions such as high-voltage transmission lines and power substations. It is not only easy to install, but also can avoid electrical interference caused by the friction between the arrester and the wire.

2. Plug-in installation
Plug-in installation is to install the arrester in the socket of the equipment or other plug equipment, such as socket-type arrester, plug-type arrester, etc. This installation method can effectively protect the safety of a single device, but care must be taken to maintain good contact between the plug and socket to prevent potential safety hazards caused by poor electrical contact.

3. Fixed installation
Fixed installation is to install the arrester in a fixed location, such as on the shell of a certain device. This installation method is suitable for small equipment or when there is no special socket or other installation location in the equipment. However, since this installation method will result in a smaller contact area between the arrester and the equipment, it is necessary to strengthen the connection with the wires to achieve safe and effective lightning protection.

4. Immersion installation
Immersion installation is to completely immerse the arrester in water to achieve the purpose of lightning protection. This kind of installation method is generally used in coastal, water and high-temperature and humid environments. It can not only effectively prevent equipment damage caused by lightning, but also play the role of cooling, explosion-proof and anti-corrosion. It is a relatively special form of lightning arrester installation.

Installation Method

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