11KV polymer housed surge arrester is a lightning protection device with superior protective performance, light weight, resistance to pollution, and stable performance. It primarily utilizes the excellent nonlinear volt-ampere characteristics of zinc oxide, which results in minimal current flowing through the arrester under normal operating voltage (microampere or milliampere level). When overvoltage occurs, the resistance drops sharply, discharging the energy of the overvoltage and achieving protection. The difference between this type of arrester and traditional arrester is that it does not have a discharge gap, utilizing the nonlinear characteristics of zinc oxide to perform the functions of current discharge and interruption.
Product Detail
The 11kV Polymer Housed Surge Arrester is designed to protect medium-voltage distribution systems and electrical equipment against transient overvoltages caused by lightning and switching events.
Using gapless zinc oxide metal oxide varistor (MOV) elements and a polymer outer housing, the arrester provides fast overvoltage limitation while maintaining very low leakage current under normal operating conditions.
ZheXi offers 11kV polymer surge arresters for overhead distribution lines, pole-mounted transformers, substations and other medium-voltage applications, with 5kA and 10kA configurations available according to project requirements.
Available Models: YH5W-11 / YH10W-11
Rated Voltage: 11kV
MCOV: 9.4kV
Application: Distribution Line / Transformer / Substation
OEM & Project Specification Support Available
The 11kV surge arrester is commonly specified for medium-voltage power distribution systems where lightning impulses and switching overvoltages may damage insulation or connected electrical equipment.
Typical applications include:
11kV overhead distribution lines
Pole-mounted transformers
Distribution substations
Medium-voltage switchgear
Cable terminations
Distribution feeders
Utility power networks
Industrial 11kV electrical systems
For outdoor distribution applications, surge arresters are normally installed close to the equipment being protected to help limit transient overvoltage stress.
The 11kV arrester uses nonlinear zinc oxide metal-oxide resistor elements as its main protective component.
During normal system operation, the MOV elements remain highly resistive. When a transient overvoltage occurs, their resistance decreases rapidly, allowing surge current to discharge while limiting the voltage across the protected equipment.
The polymer housing provides an outdoor insulation structure suitable for distribution-line applications and offers a lightweight alternative to conventional porcelain-housed designs.
Key design characteristics include:
Gapless metal oxide construction
Zinc oxide MOV elements
Polymer outer housing
Lightweight construction
Outdoor weather resistance
Pollution-resistant surface design
Low residual voltage
Fast response to transient overvoltage
Suitable for overhead distribution environments
The 11kV polymer surge arrester can be installed on overhead distribution networks to protect line equipment from transient overvoltages.
Typical pole-line installations may combine the surge arrester with:
Polymer insulators
Drop-out fuse cutouts
Crossarms
Line fittings
Transformer mounting hardware
For an 11kV distribution project, buyers can send the complete BOQ to ZheXi for multi-product technical and commercial review.
Distribution transformers are particularly important protection points because transient overvoltages can place significant stress on transformer insulation.
An arrester should be selected according to the system voltage and protection coordination requirements and installed according to the project's electrical design.
For pole-mounted transformer applications, ZheXi can also supply compatible fuse cutouts, insulators and overhead line hardware for the same project.
Polymer-housed surge arresters are widely selected for modern distribution systems because they provide a lightweight outdoor insulation structure.
Compared with traditional porcelain housings, polymer designs can offer practical advantages for transportation, handling and pole installation.
The final housing selection should still consider:
Utility specifications
Mechanical requirements
Pollution environment
Installation method
Required creepage distance
Project standards
The 11kV metal oxide surge arrester can be supplied for power-system projects requiring IEC-oriented technical specifications.
For international projects and tenders, buyers should confirm the exact required standard and testing documentation before ordering.
Available project support may include:
Technical datasheet
Product drawing
Electrical parameters
Type-test documentation for applicable models
Inspection documentation
Customized markings
Tender document support
Quality control for a medium-voltage surge arrester should focus on both electrical performance and product construction.
Important inspection points include:
MOV element performance
Rated voltage
MCOV
Residual voltage
Housing appearance
Terminal assembly
Product dimensions
Marking
Mechanical assembly
Packaging
For project orders, technical requirements should be confirmed before production so that inspection can follow the approved specification.
ZheXi supports OEM and project-specific surge arrester requirements.
Customization can be evaluated for:
Product markings
Nameplates
Housing configuration
Terminals
Mounting accessories
Insulating brackets
Disconnectors
Packaging
Technical documentation
If you have an approved drawing or utility specification, send it with your inquiry for technical review.
ZheXi Electric Power specializes in power transmission and distribution equipment and provides surge arresters together with insulators, fuse cutouts and overhead line fittings.
For utility, EPC and distribution projects, we support:
11kV polymer housed surge arresters
5kA and 10kA model options
Medium- and high-voltage arrester ranges
OEM/ODM customization
Technical model selection
Product testing
Type-test documentation for applicable projects
International tender support
Multi-product overhead-line sourcing
Pre-shipment quality inspection
This allows project buyers to source the surge arrester together with related distribution-line components through one supplier.
Product Parameters
| Type | MOA Rated Voltage | MCOV | Current lmpuIse Residual Voltage | 2ms Rectangularcurrent impulsewithstand | 4/10us High current impulsewithstand | ||
| 1/4usLightning current impulse | 8/20us Lightning current impulse | 30/60usSwitching currentimpulse | |||||
| KV(rms) | KV(rms) | KV(crest) | KV(crest) | KV(crest) | A | KA(crest) | |
| YH5W-3 | 3 | 2.55 | 11.3 | 9 | 8.9 | 150 | 65 |
| YH5W-6 | 6 | 5.1 | 22.6 | 18 | 16.8 | 150 | 65 |
| YH5W-9 | 9 | 7.65 | 33.7 | 27 | 23.8 | 150 | 65 |
| YH5W-10 | 10 | 8.4 | 36 | 30 | 26.4 | 150 | 65 |
| YH5W-11 | 11 | 9.4 | 40 | 33 | 30 | 150 | 65 |
| YH5W-12 | 12 | 10.2 | 42.2 | 36 | 31.7 | 150 | 65 |
| YH5W.15 | 15 | 12.7 | 51 | 45 | 38.5 | 150 | 65 |
| YH5W-18 | 18 | 15.3 | 61.5 | 54 | 46.2 | 150 | 65 |
| YH5W-21 | 21 | 17.0 | 71.8 | 63 | 54.2 | 150 | 65 |
| YH5W-24 | 24 | 19.5 | 82 | 72 | 62 | 150 | 65 |
| YH5W-27 | 27 | 22.0 | 92 | 81 | 69.8 | 150 | 65 |
| YH5W-30 | 30 | 24.4 | 102 | 90 | 79 | 150 | 65 |
| YH5W-33 | 33 | 27.5 | 112 | 99 | 86.7 | 150 | 65 |
| YH5W-36 | 36 | 29.0 | 123 | 108 | 92.4 | 150 | 65 |
| YH10W-3 | 3 | 2.55 | 11.3 | 9 | 8.9 | 250 | 100 |
| YH10W-6 | 6 | 5.1 | 22.6 | 18 | 16.8 | 250 | 100 |
| YH10W-9 | 9 | 7.65 | 33.7 | 27 | 23.8 | 250 | 100 |
| YH10W-10 | 10 | 8.4 | 36 | 30 | 26.4 | 250 | 100 |
| YH10W-11 | 11 | 9.4 | 40 | 33 | 30 | 250 | 100 |
| YH10W-12 | 12 | 10.2 | 42.2 | 36 | 31.7 | 250 | 100 |
| YH10W-15 | 15 | 12.7 | 51 | 45 | 38.5 | 250 | 100 |
| YH10W-18 | 18 | 15.3 | 61.5 | 54 | 46.2 | 250 | 100 |
| YH10W-21 | 21 | 17.0 | 71.8 | 63 | 54.2 | 250 | 100 |
| YH10W-24 | 24 | 19.5 | 82 | 72 | 62 | 250 | 100 |
| YH10W-27 | 27 | 22.0 | 92 | 81 | 69.8 | 250 | 100 |
| YH10W-30 | 30 | 24.4 | 102 | 90 | 79 | 250 | 100 |
| YH10W-33 | 33 | 27.5 | 112 | 99 | 86.7 | 250 | 100 |
| YH10W-36 | 36 | 29.0 | 123 | 108 | 92.4 | 250 | 100 |
YH5W-11 vs YH10W-11 Surge Arrester
The required model should be selected according to the electrical duty and project specification rather than only matching the system voltage.
YH5W-11 is intended for applications requiring the 5kA arrester configuration.
YH10W-11 is intended for applications requiring the 10kA arrester configuration.
When choosing between the two, buyers should confirm:
System voltage
Maximum continuous operating voltage
Nominal discharge current
Residual voltage requirements
Lightning exposure
Equipment insulation level
Grounding arrangement
Applicable utility or tender specification
If your project specification already defines the arrester class or discharge-current rating, send it with your inquiry for model confirmation.
FAQ
Q
A
Can we print our trademark or company name on your product or package?
OEM and ODM orders are warmly welcomed, we have rich successful experience in OEM projects. In addition, our R&D team will provide you with professional suggestions.
Q
A
How does your company do in terms of quality control?
1) We choose all raw materials to be of high quality.
2) Professional and skilled workers pay attention to every detail in handling the production process.
3) The quality control department is specialized in quality inspection for each process.
Q
A
How can I get samples to test your quality?
We can provide free samples for you to test and check, just bear the freight cost.
Contact us to know more about our products, our professional team will serve you and customize it according to your requirements.
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