Y5WS Type Porcelain Housed Zinc Oxide Surge Arrester
The Y5WS Type Porcelain Housed Zinc Oxide Surge Arrester is designed for protecting power distribution equipment against lightning overvoltage and switching surges. It is widely used in overhead distribution networks, transformer terminals, and other outdoor electrical installations where reliable surge protection is required.
This arrester series adopts a zinc oxide metal oxide varistor core housed in a porcelain body with outdoor metal fittings. The structure provides stable insulation performance, compact installation, and dependable protection for medium-voltage distribution systems.
Key Features
- Porcelain housed zinc oxide surge arrester for outdoor use
- Suitable for lightning and switching overvoltage protection
- Commonly used on distribution lines and transformer protection points
- Gapless metal oxide structure with compact design
- Available in multiple common voltage ratings
- Typical 5kA distribution-class arrester configuration
Typical Specifications
| Model | Rated Voltage | MCOV | DC 1mA Reference Voltage | Residual Voltage (8/20μs) | 2ms Rectangular Current |
|---|---|---|---|---|---|
| Y5WS-3.8/17 | 3.8 kV | 3.2 kV | 7.5 kV | 17 kV | 75 A |
| Y5WS-7.6/30 | 7.6 kV | 6.0 kV | 15 kV | 30 kV | 75 A |
| Y5WS-12.7/50 | 12.7 kV | 10.2 kV | 25 kV | 50 kV | 75 A |
| Y5WS-17/50 | 17 kV | 13.6 kV | 25 kV | 50 kV | 75 A |
Materials and Construction
The arrester typically consists of a porcelain housing, zinc oxide varistor block core, and metal end fittings. This combination provides mechanical strength, weather resistance, and stable surge-limiting performance for outdoor service.
Surface Treatment
The porcelain body is normally glazed for outdoor insulation durability, while the metal fittings are commonly treated for corrosion resistance in utility environments.
Applications
- Overhead distribution lines
- Pole-mounted transformer protection
- Distribution substations
- Medium-voltage outdoor power systems
Installation Guidance
The arrester is typically installed in parallel with the protected equipment. Selection should match the system voltage, insulation level, and installation environment.
Quality Inspection
Common inspection items include appearance checking, porcelain integrity, electrical parameter verification, residual voltage testing, and mechanical assembly inspection.
Reference Standards
This product is commonly manufactured with reference to IEC 60099-4 for metal-oxide surge arresters without gaps for AC systems. Reference to a standard does not constitute certification.
Ordering Information
When requesting a quotation, please provide the required model, system voltage, installation application, quantity, and any special mounting or creepage requirements.
Frequently Asked Questions
Q1: What is the Y5WS arrester used for?
A1: It is used to protect electrical equipment and overhead distribution systems from lightning and switching overvoltage.
Q2: What are the commonly purchased models?
A2: Common market models include Y5WS-3.8/17, Y5WS-7.6/30, Y5WS-12.7/50, and Y5WS-17/50.
Q3: Is this product suitable for outdoor installation?
A3: Yes. The porcelain housed design is intended for outdoor power distribution applications.
