Zinc oxide surge arrester for lightning protection
Key attributes
| Brand | Wone Store |
| Model NO. | Zinc oxide surge arrester for lightning protection |
| Rated voltage | 30kV |
| Continuous operating Voltage | 24kV |
| Series | Surge Arrester |
Product descriptions from the supplier
Description：
Zinc oxide surge arrester is a lightning protection device with superior protection performance, light weight, pollution resistance and stable performance. It mainly uses the good non-linear volt-ampere characteristics of zinc oxide to make the current flowing through the surge arrester at normal working voltage very small (microamp or milliampere level); when the overvoltage acts, the resistance drops sharply,venting the overvoltage Energy to achieve the effect of protection. The difference between this kind of lightning arrester and the traditional lightning arrester is that it has no discharge gap, and uses the non-linear characteristics of zinc oxide to discharge and break.
General ：
Ratings:0.22-500KV (porcelain),0.22-220KV(composite)
Application.for protection of power transmission& distribution system from over-voltage.
Features:
Silicone polymer housing composite metal oxide surge arrester and porcelain housing metal Oxide surge arresters are available.
Easy installation and maintenance.
Good sealing capability to ensure reliable operation.
Protection and reliability of the surge arrester have been greatly enhanced.
Type designation：
Working condition：
Ambient air temperature:-40℃—+40℃.
Altitude: <=2000m.
Frequency: 48Hz~62Hz.
Power frequency voltage applied between terminals of surge arrester must not exceed continuous operating voltage of surge arrerter.
Earthquake intensity is less than 8 degree.
Max. Wind speed is 35m/s.Aawifflii Surge arrester.
Main techical parameter：
Metal oxide Polymer Housing (Gapless)type Surge Arrester for A.C System(5kA series)
Metal Oxide Polymer Housing (Gapless) type Surge Arrester tor A.C. System (10KA series)
Metal Oxide Polymer Housing (Gapless) type Surge Arrester for A.C. System (20KA series)
Metal Oxide Porcelain Housing (Gapless) type Surge Arrester for A.C. System (5KA series)
Metal Oxide Polymer Housing (Gapless) type Surge Arrester for A.C. System (10KA series)
Metal Oxide Polymer Housing (Gapless)type Surge Arrester for A.C. System (20KA series)
When order,please indicate the detailed information as below listed:
Anti-contamination degree and creepage distance.
Any special requirement.
Accessories.
Max. System voltage.
Rated voltage or Max.continuous operating voltage.
Nominal discharge current.
Type of housing material.
How does the zinc oxide arrester for lightning protection work?
Normal Operating Voltage:
Under normal operating voltage, the zinc oxide varistor discs present a high-resistance state, allowing only a minimal current—typically in the microampere or milliampere range—to flow through the surge arrester. At this time, the arrester acts like an insulator, having virtually no impact on the system's normal operation.
Overvoltage Event:
When struck by lightning or when overvoltage occurs in the system (such as from lightning surges or switching overvoltages), the resistance of the zinc oxide varistor discs drops sharply, forming a low-resistance path. This allows the energy generated by the overvoltage to rapidly discharge through the arrester into the ground, thereby limiting the voltage on the protected equipment to within a safe range and effectively protecting the insulation of electrical devices from overvoltage damage.
Post-Overvoltage Recovery:
Once the overvoltage event has passed, the zinc oxide varistor discs quickly return to their high-resistance state, restoring normal power supply to the system and preparing for any potential future overvoltage events.
Related Products
-
Monitor For Surge Arrester
-
Counter For Surge Arrester for recording the operation times
-
Surge Arresters for Transformer Neutral Points
-
Surge Arresters for AC Filters
-
±500～±1100kV DC Metal Oxide Surge Arresters
-
Metal Oxide Surge Arresters for Series Compensation Capacitors
-
750~1000kV Metal Oxide Surge Arresters
Related Knowledges
-
Faults and Handling of Single-phase Grounding in 10kV Distribution LinesCharacteristics and Detection Devices for Single-Phase Ground Faults1. Characteristics of Single-Phase Ground FaultsCentral Alarm Signals:The warning bell rings, and the indicator lamp labeled “Ground Fault on [X] kV Bus Section [Y]” illuminates. In systems with a Petersen coil (arc suppression coil) grounding the neutral point, the “Petersen Coil Operated” indicator also lights up.Insulation Monitoring Voltmeter Indications:The voltage of the faulted phase decreases (in01/30/2026 -
Neutral point grounding operation mode for 110kV～220kV power grid transformersThe arrangement of neutral point grounding operation modes for 110kV～220kV power grid transformers shall meet the insulation withstand requirements of transformer neutral points, and shall also strive to keep the zero-sequence impedance of substations basically unchanged, while ensuring that the zero-sequence comprehensive impedance at any short-circuit point in the system does not exceed three times the positive-sequence comprehensive impedance.For 220kV and 110kV transformers in new constructi01/29/2026 -
Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?In substations, equipment such as power and distribution transformers, transmission lines, voltage transformers, current transformers, and disconnect switches all require grounding. Beyond grounding, we will now explore in depth why gravel and crushed stone are commonly used in substations. Though they appear ordinary, these stones play a critical safety and functional role.In substation grounding design—especially when multiple gr01/29/2026 -
Why Must a Transformer Core Be Grounded at Only One Point? Isn't Multi-Point Grounding More Reliable?Why Does the Transformer Core Need to Be Grounded?During operation, the transformer core, along with the metal structures, parts, and components that fix the core and windings, are all situated in a strong electric field. Under the influence of this electric field, they acquire a relatively high potential with respect to ground. If the core is not grounded, a potential difference will exist between the core and the grounded clamping structures and tank, which may lead to intermittent discharge.I01/29/2026 -
Understanding Transformer Neutral GroundingI. What is a Neutral Point?In transformers and generators, the neutral point is a specific point in the winding where the absolute voltage between this point and each external terminal is equal. In the diagram below, pointOrepresents the neutral point.II. Why Does the Neutral Point Need Grounding?The electrical connection method between the neutral point and earth in a three-phase AC power system is called theneutral grounding method. This grounding method directly affects:The safety, reliabilit01/29/2026 -
What’s the Difference Between Rectifier Transformers and Power Transformers?What is a Rectifier Transformer?"Power conversion" is a general term encompassing rectification, inversion, and frequency conversion, with rectification being the most widely used among them. Rectifier equipment converts input AC power into DC output through rectification and filtering. A rectifier transformer serves as the power supply transformer for such rectifier equipment. In industrial applications, most DC power supplies are obtained by combining a rectifier transformer with rectifier equ01/29/2026
Related Solutions
-
Dedicated Vacuum Contactor Solution for Port Shore Power SystemsI. Background and ChallengesShore power systems have become core technical equipment for ports to reduce carbon emissions and noise pollution. However, these systems face two major challenges in the harsh operational environment of ports:Severe Environmental Corrosion: High humidity and salt spray in port areas cause serious corrosion to metal components and enclosures of electrical equipment, significantly impacting electrical lifespan and operational reliability.High Switching Requirements:09/13/2025 -
ABB Vacuum Contactor KC2 Power Supply System Technical Transformation PlanIssue OverviewThe 10kV air compressor starting system of a company utilizes the ABB vacuum contactor KC2 as the control component for the operating circuit. The dedicated wide-voltage power supply module paired with this contactor presents the following issues:Frequent failures: The power supply module fails to properly transition the voltage from 300V to 12V, resulting in fuse blowouts.Poor heat dissipation: Enclosed installation of the module leads to insufficient heat dissipation, acceler09/13/2025 -
Solution for Medium-Voltage Motor Control and Protection Using Vacuum Contactor-Fuse (VCF) in a Coal Conveying System1.Project BackgroundA coal conveying system comprises 15 belt conveyors driven by medium-voltage motors. The system operates under complex conditions, with motors often subjected to heavy loads and frequent starts. To address these challenges and achieve effective control and reliable protection during motor startup, the project comprehensively adopts Vacuum Contactor-Fuse (VCF) combination devices for the 6kV medium-voltage motor power distribution. This solution details the technical features,09/13/2025
