Do Fuse Wires
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| Specification | Details |
|---|---|
| Type | Drop Out (DO) Fuse Wire / Fuse Element |
| Application | Used in Drop Out (DO) fuse units for protecting 11 kV / 22 kV / 33 kV overhead power distribution lines and transformers |
| Material | Tin-plated / Silver-plated Copper, Aluminum, or Special Fuse Alloy (e.g., Copper-Silver-Zinc) |
| System Voltage | 11 kV / 22 kV / 33 kV |
| Operation | Melts under fault or overload current to isolate the faulty section |
| Mounting Type | Fitted into DO fuse carrier / link assembly |
| Fuse Type | Non-rewirable, high rupture capacity type |
| Standards Compliance | IS: 9385 (Part I & II), IEC 282, and relevant Indian utility standards |
| Available Forms | Wire form (spool), pre-cut lengths, or pre-fitted elements |
| Specification | Typical Ratings |
|---|---|
| Rated Voltage | 11 kV / 22 kV / 33 kV |
| Rated Current | 6 A – 100 A (depending on wire size) |
| Breaking Capacity | Up to 16 kA RMS (for short circuit conditions) |
| Melting Temperature | 200°C – 300°C (depending on alloy composition) |
| Power Frequency Withstand Voltage | 28 kV (for 11 kV system) |
| Fuse Element Diameter | 0.6 mm to 2.5 mm (as per rating) |
| Operating Time | Fast acting – operates within milliseconds during fault |
| Service Life | Long, with consistent melting characteristics |
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