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  • Regardless of whether the insulators and heat-shrinkable cable accessories are similar or different.One provides the unwavering backbone of the grid; the other offers the delicate, life-saving surgery at its nerve endings. Together, they form an indispensable alliance, silently ensuring that the lifeblood of our modern world electricity flows safely, reliably, and without interruption.
  • The perfect storage facility for Cold&Heat shrink accesseries is a clean, dark, and dry space. The temperature is a steady 20°C (68°F), with humidity hovering at 40%. Treating Cold&Heat shrink cable accessories with this level of care, we are not just storing spare parts. We are preserving the integrity, reliability, and safety of the electrical connections that power our modern world.
  • Heat shrink cable joint reduce the maintenance require by creating permanent, environmentally sealed connections. From powering our cities to enabling renewable energy transformation, heat shrink joints work silently in the background.

    As we build smarter grids and more connected infrastructure, heat shrink cable joint offering greater reliability for the systems that power our modern world.

    Solving complex problems through simple, brilliant solutions that stand the test of time and elements.
  • To choose heat shrink cable accessories, measure the largest diameter you need to fit over and the smallest diameter to seal onto.

    Pick a tube with a wider expanded diameter and a smaller recovered diameter than the first one, ensuring a tight, waterproof seal.
  • Choosing the right heat shrink cable accessory is crucial and mainly depends on the cable's voltage rating.

    For low voltage, thin-wall tubes work well for basic insulation and sealing.

    And for medium to high voltage, you need thicker, multi-layer accessories with specialized stress control layers to manage the electrical field and prevent insulation failure.

    The heat shrink accessory should match or exceed this rating for safety.
  • When choosing heat shrink cable accessories, the conductor material is a key factor to consider. Copper conductors are easy to work with. On the one hand, standard heat shrink tubes offer great insulation and protect against oxidation after a secure connection is made.

    On the other hand, aluminum conductors, favored for their light weight, come with notable challenges. They quickly form a protective oxide layer but are very prone to galvanic corrosion when touching different metals. For aluminum, the selection process is more critical.

    The tube must create a perfect, hermetic seal to contain the gel and permanently lock it requires a meticulous approach: Apply an antioxidant compound to the connection before crimping to prevent oxidation, then use a high-quality heat shrink tube to keep moisture out and ensure long-term protection and performance.
Since the establishment of Zhejiang QLG Electric Power Fitting Co., Ltd., in 2009, with one decade prosper and robust growth, QLG company is currently fully concentrated on the production, R&D, and sales of electric power fitting, cable accessories...
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