Key Factors for Selecting a Lightning Arrester
2025-08-07
Introduction to Lightning Arresters
Lightning arresters are critical protective devices that safeguard electrical systems from damaging voltage surges caused by lightning strikes and switching operations. At YRO, we engineer high-performance lightning arresters that meet international standards for utility, industrial, and commercial applications. This comprehensive guide examines the essential selection criteria and our advanced product offerings.
Critical Selection Factors for Lightning Arresters
1. Electrical Parameters
| Parameter | Importance | YRO Specifications |
|---|---|---|
| Rated Voltage | Must match system voltage | 3kV-550kV |
| Discharge Current | Surge handling capacity | 5kA-100kA |
| Protection Level | Residual voltage at surge | <1.5x system voltage |
| Response Time | Speed of protection | <100 nanoseconds |
2. Construction Types
| Type | Advantages | Best Applications |
|---|---|---|
| Station Class | Highest protection | Substations, generators |
| Intermediate Class | Balanced performance | Commercial buildings |
| Distribution Class | Cost-effective | Residential, pole-mounted |
3. Environmental Considerations
✔ Pollution degree: Special creepage distance for contaminated areas
✔ Altitude rating: Up to 4000m operation
✔ Sealing: Hermetic sealing prevents moisture ingress
YRO Lightning Arrester Product Line
Technical Specifications
| Model | Voltage Class | MCOV | Duty Cycle | Housing Material |
|---|---|---|---|---|
| YRO-LA10 | 10kV | 8.4kV | Heavy | Porcelain |
| YRO-LA36 | 36kV | 30kV | Medium | Polymer |
| YRO-LA550 | 550kV | 420kV | Heavy | Composite |
Performance Features
✔ Silicon carbide or metal oxide varistor technology
✔ Fail-safe indicators for easy maintenance checks
✔ Seismic withstand up to 0.5g acceleration
✔ UV-resistant polymer housings
Installation Best Practices
Location Guidelines
-
Transmission lines: Every 500m on towers
-
Substations: At all incoming/outgoing feeders
-
Buildings: Main distribution panel entrance
Mounting Requirements
✔ Minimum 1m clearance from protected equipment
✔ Proper grounding (<5Ω resistance)
✔ Correct phase-to-ground connection
FAQ: Lightning Arrester Selection
Q: How do I determine the proper voltage rating for a lightning arrester?
A: Follow these steps:
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Identify system voltage: Line-to-line voltage for 3-phase systems
-
Calculate MCOV: Maximum Continuous Operating Voltage (typically 80-85% of rated voltage)
-
Consider temporary overvoltages: Account for possible system swings
YRO provides free voltage calculation services with technical consultation.
Why Choose YRO Lightning Arresters?
✔ 99.7% protection reliability in field tests
✔ 30% faster response than industry average
✔ Custom creepage distances for polluted environments
✔ Global certifications (IEEE, IEC, ANSI)
✔ 10-year performance warranty
Get Expert Surge Protection Solutions
For technical specifications or application advice:
📧 Email: [email protected]
With decades of experience in surge protection, I personally guarantee YRO lightning arresters provide unmatched system protection against the most severe electrical surges. Contact our engineers today for your protection needs!
