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Home › Insulation Cover › BLQ-1
Insulation Cover · Arrester Series
BLQ-1 — Surge Arrester Insulation Cover
Custom-molded HTV silicone-rubber cover that insulates the top and bottom terminals of medium-voltage surge arresters — preventing phase-to-ground flashover, wildlife-induced tripping, and weather-related tracking on 3–36 kV distribution lines.
ModelBLQ-1
MaterialHTV Silicone Rubber
Designed ForSurge Arresters (polymer & porcelain)
Package3 PCS / SET
✔ OEM / ODM · ✔ In-house tooling & molding · ✔ Type-test reports on request · ✔ Reply in 24h
Overview
The BLQ-1 is a custom-molded silicone-rubber insulation cover designed specifically for medium-voltage surge arresters — both polymer-housed and porcelain types. It wraps the top terminal (line-side) and bottom terminal (ground-side) of the arrester, creating a weatherproof, hydrophobic insulating barrier that prevents phase-to-ground flashover, wildlife-induced short circuits, and tracking caused by pollution and moisture.
Molded from high-temperature vulcanized (HTV) silicone rubber, the BLQ-1 is UV-stable, anti-tracking, flame-retardant and self-extinguishing. It is dimensioned to fit standard distribution-class arresters (3–36 kV) and can be customized to non-standard arrester bodies upon request. Installation is slip-on — no heat, no adhesive, no special tools — and the cover can be applied during live-line work with appropriate hot-stick techniques.
Each set covers one 3-phase arrester bank (3 arresters = 3 covers). Produced in-house at Jiadian’s Yueqing factory with full OEM/ODM flexibility: custom color, branding, and dimensional adjustments to your specific arrester model.
Specifications
| Model | BLQ-1 |
|---|---|
| Material | High-Temperature Vulcanized (HTV) Silicone Rubber |
| Designed For | Surge arresters — polymer-housed and porcelain, distribution class (3–36 kV) |
| Key Properties | Hydrophobic · UV-resistant · anti-tracking · flame-retardant · self-extinguishing |
| Operating Temperature | -60 °C ~ +200 °C |
| Color | Red (standard); Grey and custom available |
| Installation | Slip-on; live-line installable with hot-stick |
| Package | 3 PCS / SET (covers one 3-phase arrester bank) |
| Standard | IEC / GB compliant; ISO 9001 factory |
| Customization | Molded to your specific arrester model, color, OEM label |
📄 DatasheetFull dimensions, test reports and installation guide in PDF — ready for tenders.
Get the Datasheet →
Key Features
⚡
Arrester-Specific Fit
Molded to the exact profile of standard distribution arresters — snug fit on both polymer and porcelain bodies.
🐦
Wildlife Protection
Shields exposed arrester terminals from birds and animals — a top cause of distribution-line tripping.
☀️
All-Weather Silicone
Hydrophobic HTV silicone sheds water, resists UV degradation and anti-tracking — performs from -60°C to +200°C.
🔥
Flame-Retardant
Self-extinguishing material — safe around energized equipment, will not sustain combustion.
🔧
Tool-Free Installation
Slip-on design — install in seconds without heat, adhesive or special tools. Live-line installable.
🏭
In-House Molding
Produced in Jiadian’s own tooling and molding facility — short lead times, any customization.
Applications
🗼
Overhead Distribution Lines
Insulating arrester terminals on 3–36 kV overhead distribution feeders.
🏛️
Substation Arrester Banks
Protecting arrester connections in compact MV switchgear and substation layouts.
🔌
Transformer Protection
Covering arresters mounted on pole-top and pad-mounted distribution transformers.
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Wildlife Corridors
Critical protection in bird-dense and animal-prone areas where uncovered terminals cause frequent outages.
Frequently Asked Questions
What arrester models does BLQ-1 fit?
BLQ-1 is molded for standard distribution-class polymer and porcelain surge arresters (3–36 kV). If your arrester has a non-standard body diameter or terminal configuration, send us the model or a drawing — we’ll adjust the mold or recommend BLQ-2.
What is the difference between BLQ-1, BLQ-2, and BLQ-DL?
BLQ-1 fits the most common distribution arrester body size; BLQ-2 is sized for larger-diameter station-class arresters; BLQ-DL includes a port for down-lead / ground-lead cable connections. Tell us your arrester model and we’ll match the right cover.
Can it be installed on a live line?
Yes — the slip-on design is compatible with hot-stick installation on energized lines, following standard live-line work procedures. No heat or adhesive required.
What is the MOQ and lead time?
Low-MOQ samples available for evaluation. Production lead time depends on quantity and customization — typically 7–15 days for standard BLQ-1 covers. Contact us with your quantity for a precise quote.
Can you match a specific arrester brand/model?
Yes — send us the arrester manufacturer, model number and a photo or dimension drawing. We’ll cross-reference our mold library or create a custom mold to match.
Need BLQ-1 for Your Arresters?
Send your arrester model, drawing or sample — we reply within 24 hours with a matching cover and quote.