HY5CX-17-42 Line Gap-Type Lightning Arrester, 10kV Zinc Oxide Lightning Arrester

Discover the HY5CX-17-42 Line Gap-Type Lightning Arrester, a 10kV zinc oxide device. It ensures reliable surge protection for power lines, ideal for stable medium-voltage grid operation.

🔧 Product Overview

This zinc oxide (ZnO) arrester adopts a gapless structure with high-energy metal oxide varistors and a weather-resistant composite or porcelain housing. It offers fast response to transient surges and long-term durability even in harsh environmental conditions.

Key Benefits:

Rated for 10kV/17kV systems
Surge current withstands up to 10kA
Optional composite or porcelain housing
Lightweight, anti-fouling, UV-resistant design

📐 Technical Specifications

Parameter	Value
Rated Voltage (Ur)	17 kV
Maximum Continuous Operating Voltage (Uc)	13.6 kV
Rated Discharge Current (8/20 μs)	10 kA
Nominal Discharge Voltage (8/20 μs)	≤ 42 kV
Housing Material	Composite or Porcelain
Creepage Distance	≥ 400 mm
Standard Compliance	IEC 60099-4
Installation	Indoor/Outdoor

🌍 Application Scenarios

10kV overhead lines and distribution transformers
Secondary substations and switchgear panels
Ring main units (RMU) and compact substations
Industrial plant or rural electrification networks

📊 Real Project Case

🔷 Thailand Provincial Electricity Authority (PEA)
In 2022, PEA deployed over 5,000 YH5CX-17/42F arresters across their rural distribution transformers and pole-mounted switchgear.
Performance Report:

Zero failures reported during the monsoon lightning season.
Easy field replacement thanks to lightweight composite housing.

Source: PEA Thailand Distribution Asset Program 2022

HY5CX-17-42 Line Gap-Type Lightning Arrester, 10kV Zinc Oxide Lightning Arrester

🛠 Installation & Maintenance

Mount securely on the transformer frame or support insulator bracket.
Ensure proper grounding connection.
Visual inspection recommended every 1–2 years;
No internal maintenance required.

❓ Frequently Asked Questions (FAQ)

1. What does 17/42F mean in the model?
“17” stands for the rated voltage (kV), “42” is the lightning impulse residual voltage (kV), and “F” represents the structural code.

2. Is this suitable for RMU or box-type substations?
Yes. It fits well inside compact switchgear spaces due to its slim, lightweight build.

3. How do I choose between composite and porcelain housing?
Composite is lighter, anti-fouling, and safer for urban areas. Porcelain offers better mechanical strength for rural/industrial zones.

4. What is the typical lifespan?
10–15 years in normal environments; longer with proper cleaning and grounding.

5. Can it withstand multiple surges?
Yes. Rated for 10kA discharge current and can survive multiple standard surge events.