Selector moving contact
Selector Moving Contact – Product Description
The Selector Moving Contact is responsible for switching between different tap positions by making and breaking electrical connections. It works in coordination with fixed contacts to ensure smooth and safe voltage regulation.
Designed with precision-engineered contact surfaces and spring-loaded mechanisms, it provides firm contact pressure and minimal arcing. This improves switching reliability and reduces maintenance requirements.
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NGEF Transformer selector switch assembly
NGEF Selector Switch Assembly – Product Description
The NGEF Selector Switch Assembly is an essential part of the On-Load Tap Changer (OLTC) system used in power transformers. It is responsible for selecting different tap positions on the transformer winding while the transformer remains in operation. This allows smooth voltage regulation without interrupting the power supply. The assembly works together with the diverter switch to ensure safe and reliable switching under load conditions.
It is manufactured using high-quality conductive and insulating materials to ensure durability and stable performance in oil-filled and high-temperature environments. The assembly consists of a precision-aligned shaft, contact segments, and switching components that provide accurate tap positioning. By maintaining proper voltage control and reducing electrical stress, the NGEF Selector Switch Assembly helps improve transformer efficiency and extend service life.
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Selector switch spares
Base plate
Base Plate – Product Description
The Base Plate is a fundamental structural component used in NGEF transformer selector and diverter switch assemblies. It provides strong mechanical support for mounting and aligning internal switching parts, ensuring stable operation during tap changing. Designed with precision-machined surfaces and mounting holes, it helps maintain correct positioning of moving and fixed components inside the OLTC system.
Manufactured from high-grade insulating or metallic materials, the base plate offers excellent resistance to heat, oil, and mechanical stress. Its rigid construction minimizes vibration and misalignment, contributing to smooth operation and long service life of the tap changer mechanism.
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Selector switch spares
Insulating sleeves
Insulating Sleeve – Product Description
The Insulating Sleeve is used to electrically isolate conducting parts inside the selector switch and diverter mechanism. It prevents current leakage and short circuits by providing reliable insulation between live components and metal structures. This helps maintain safe and efficient transformer operation under high-voltage conditions.
Made from high-quality insulating materials, the sleeve offers excellent thermal stability and dielectric strength. It is designed to fit securely around conductors and shafts, ensuring consistent insulation even during continuous switching operations.
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Selector switch spares
Alluminium clamps
Aluminium Clamp – Product Description
The Aluminium Clamp is used to securely hold and position conductors, cables, and contact assemblies inside the tap changer system. It ensures firm mechanical fixing while allowing proper electrical connectivity and thermal expansion.
Made from corrosion-resistant aluminium alloy, the clamp offers high strength with lightweight construction. It provides excellent stability under vibration and temperature variations commonly found in transformer environments.
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