HGRW1-35 35kV Wind-Resistant Drop-Out Fuse

The HGRW1-35 drop-out fuse is a wind-resistant 35kV outdoor high-voltage protection device, specially designed for areas prone to strong wind, salt fog, or high altitude. It is widely used on overhead lines and pole-mounted transformers in utility and industrial networks.

🔧 Product Overview

HGRW1-35 uses a reinforced hinge and locking mechanism to maintain stability during strong winds. The drop-out mechanism provides visible disconnection upon fuse blow, ensuring line safety and maintenance efficiency. Suitable for areas up to 4,000m altitude and wind zones up to Class 9.

Key Features:
Designed for 35kV systems, max 100A fuse links
Wind-resistant metal frame and porcelain insulator
Quick visual fault detection via fuse drop-out
Manual reset and easy link replacement
Ideal for coastal, plateau, or storm-prone regions

📐 Technical Specifications

Parameter	Value
Rated Voltage	35 kV
Rated Current	100 A
Breaking Capacity	8 kA
Power Frequency Withstand	95 kV
Lightning Impulse Withstand	185 kV
Applicable Altitude	≤ 4000 m
Wind Resistance Grade	Class 9 (≥34 m/s)
Insulation Material	Porcelain
Installation Type	Pole-mounted
Standard Compliance	IEC 60282-2

🌍 Typical Applications

Overhead 35kV distribution lines
Remote pole-mounted transformer protection
Mountainous or coastal substations
Renewable energy installations (e.g., wind farms)
Island and plateau grid reinforcement projects

📊 Case Study: Yunnan Wind Corridor Grid Hardening (2021)

In 2021, HGRW1-35 fuses were deployed along 35kV lines in high-altitude regions of Yunnan Province, China. The area experienced frequent storms and lightning activity.

Outcomes:

Prevented line contact failures in >80 km/h winds
Operators confirmed safe replacement in harsh terrain
Worked reliably up to 3,600m above sea level

Source: Yunnan Power Bureau Report, 2021

🛠 Installation Guidelines

Secure to pole with anti-twist U-bolts;
Connect the upper terminal to the incoming line, the lower to the transformer;
Insert fuse link with insulated hookstick.
Ground as per local codes;
After the operation, visually confirm the open arm and replace the fuse.

❓ Frequently Asked Questions (FAQ)

1. How is HGRW1-35 different from RW10?
It has enhanced structural rigidity and anti-wind design for use in Class 8–9 wind zones and higher altitude areas.

2. Can this fuse be used at 33kV instead of 35kV?
Yes. It is designed for systems up to 36kV nominal. Please match the fuse link accordingly.

3. What type of fuse links are compatible?
Standard 100A drop-out links per IEC/DIN standards.

4. Is porcelain better than composite for this use?
Yes, in strong wind or high-UV environments, porcelain offers longer service life and mechanical strength.

5. How often should it be checked?
Visual inspection every 12–18 months is sufficient in normal use. In coastal or storm-prone zones, check after severe weather.