15/24KV 600A Insulated Protective Cap

Welcome (Wenzhou) Electric Co., Ltd. — we’ve got the rugged 600A Class Bushing Extender you need for your high-voltage connection setups.
Comewill 15/24KV 600A Insulated Protective Cap from China manufacturer, supplier, factory ensures sealed insulation, high durability, and safe high-voltage protection for transformer and switchgear systems with reliable EPDM construction and long service life.
This extender fits right onto standard de-energized 600A dead break interfaces, and it’s perfect for coupling reducing tap plugs, connecting plugs and apparatus bushings. It also works seamlessly with 200A load break interfaces, pairing up nicely with elbow surge arresters and elbow connectors.
Once you assemble 15/24KV 600A Insulated Protective Cap with your matching apparatus, the whole unit becomes fully shielded and totally submersible — no fuss, no worries even in wet, harsh conditions.
If you’re looking to stock up on reliable components, we offer competitive pricing, flexible minimum order quantities and on-time delivery. Need specs, samples or custom tweaks? Just reach out. We’re here to make your procurement smooth and straightforward.

Product Features:

Electrical Performance Stability
Withstands 42KV/1min (15KV class) and 54KV/5min (24KV class)
Impulse voltage up to 95KV–125KV
Insulation strength ≥25kV/mm ensures consistent safety
Environmental Resistance
Wide temperature range: -50℃ to 200℃
UV, ozone, and aging resistance for outdoor durability
Designed for over 20 years of service life
Structural Design
2–3mm elastic EPDM body for compression and tear resistance
Buckle-type reusable structure for easy installation and maintenance
Built-in silicone grease enhances sealing reliability
Safety Protection
Fully sealed waterproof and dustproof design
Flame-retardant and tracking-resistant material
Stainless steel operating ring for stable handling

Parameter

Application

The 15/24KV 600A Insulated Protective Cap is commonly used in application scenarios such as transformer outlet bushings, reserved interfaces in high-voltage switchgear, and cable mid-point protection in substations and distribution rooms. It is also suitable for reserved port protection in high-voltage areas of new energy photovoltaic power stations, mining electrical equipment, communication base stations, as well as medium and high-voltage electrical equipment in industries such as metallurgy and national defense. It can meet the needs of both long-term protection for fixed equipment and temporary construction interface sealing.

Advantages

Compared with ordinary rubber materials, EPDM offers lower hydrophobicity (≤0.1%) and superior insulation stability.
Compared to heat-shrink solutions, it requires no heating, avoids equipment damage, and reduces maintenance costs by about 40%.
Compared with ABS, 15/24KV 600A Insulated Protective Cap provides higher flexibility and 30% stronger impact resistance under extreme temperatures.
Shielding resistance is ≤5000Ω, and leakage current remains ≤5mA under 20KV testing, ensuring safer operation.