Off Load Tap Changer
Optimize your power distribution network with an industrial offload tap changer (also known as a de-energized tap changer or DETC). Engineered for heavy-duty voltage regulation, these off-circuit components allow for safe, manual adjustments of a transformer's winding turns ratio when the system is completely isolated and offline. Manufactured from premium, high-conductivity materials to withstand severe electrical stress, our offload tap changers are the ideal aftermarket replacement for maintaining utility-scale and industrial oil-immersed transformers with zero compromise on safety or equipment longevity.
Verified Engineering Ratings & Parameters
Laboratory tested ratings compliant with IEC 60076 & factory acceptance benchmarks.
| Engineering Parameter | Specification Rating / Value |
|---|---|
| WST II2 30/24-6*5S2 | Height: 70mm | Length: 455mm |
| WST II2 63/24-6*5S2 | Height: 70mm | Length: 530mm |
| WST I 120/10-8*7 | Heavy-Duty Linear Selection |
| WST I 125/10-6*5 | Premium Linear System |
| WST II 150/10-8*7 | Maximum Load Configuration |
Engineering Scope & Design Overview
Manufactured with high-grade electrical steel, electrolytic copper, and industrial-duty enclosures.
Technical Specifications & Product Architecture
Every WST tap switch is manufactured with heavy-duty insulating components—featuring glass fiber reinforced nylon PA66 or premium electrical laminates—ensuring superior dielectric strength when immersed in mineral oil or silicon oil environments.
Engineering Features & Performance Advantages
- High-Conductivity Copper Contacts: Outfitted with spring-loaded, silver-plated or tin-plated electrolytic copper contacts that maintain maximum contact pressure, yielding sub-milliohm electrical resistance and keeping localized thermal generation to a minimum.
- Premium Dielectric Strength: The structural frame features industrial-grade brown glass fiber reinforced nylon PA66 insulation, optimized to withstand severe lightning impulse voltages and extreme thermal cycles without fracturing.
- Advanced "Drawing Operation" Drive System: Equipped with an intuitive manual external operating handle (available in heavy-duty aluminum or plastic options) featuring an absolute mechanical locking system to completely prevent accidental or vibration-induced shifting.
- Versatile Winding Integration: Seamlessly supports multiple electrical configurations including Delta (Δ), Star/Wye (Y), and series-parallel winding schemes to align with diverse engineering designs.
Target Industrial Use Cases & Sectors
Designed to withstand rigorous commercial and industrial electrical environments across Bangladesh.
Heavy Steel & Induction Smelting
Built to endure violent load swings, harmonic distortions, and repetitive short-circuit stresses in arc furnaces and rolling mills.
Textile, Garments & Spinning Mills
Guarantees zero-dip power continuity, low operational temperature rise, and strict fire-safe dielectric protection.
Utility & Commercial Substations
Fully approved for 11kV/33kV distribution networks under DPDC, DESCO, BREB, WZPDCL, and high-rise commercial towers.
Quality Assurance & Factory Acceptance Testing (FAT)
Every unit is validated on high-precision test benches before customer dispatch.
Frequently Asked Engineering & Procurement Questions
Essential details regarding procurement, custom fabrication, and delivery in Bangladesh.
Related & Suggested Products
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