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High-voltage fuses according to British standards

High-voltage fuses according to British standards
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High-voltage fuses according to British standards

Product catalog summary

Introduction

This document provides technical data and specifications for HHB high-voltage, high-performance fuse-links, including types designed according to British standards. The fuses are intended for use in oil-insulated switchgear and motor circuit protection, complying with IEC and British standards.

Fuse Types and Application Range

The HHB fuse-links are categorized by voltage ratings and application areas:

  • HHBO-B: Fuse-links for oil-insulated switchgear, available for voltage ratings of 7.2 kV, 12 kV, 15.5 kV, and 24 kV.
  • HHBM-BM: Fuses for motor circuit protection, designed according to British standards, primarily for 3.6 kV systems.

All fuse-links feature notches to ensure consistent time-current characteristics, with controlled grain size and humidity content for reliability.

Technical Specifications

Voltage and Current Ratings

The fuses cover a range of rated voltages from 3.6 kV up to 24 kV and rated currents from 6.3 A to 450 A, depending on the fuse type and size.

Physical Dimensions

Typical fuse lengths are 254 mm or 454 mm, with diameters varying by type and size. The number of fuse barrels varies accordingly.

Performance Parameters

  • Pre-Arcing I²t (Melting Integral): Values range from hundreds to millions of A²s, indicating energy let-through before fuse operation.
  • Clearing I²t (Total Clearing Integral): Higher values than pre-arcing I²t, representing total energy dissipated during fault interruption.
  • Rated Breaking Current: Typically 50 A for British standard fuses, with short-circuit breaking capacities up to several kiloamperes.
  • Power Loss: Specified in watts, varies with fuse size and current rating.
  • Cold Resistance: Provided in milliohms for British standard fuses, important for voltage drop and thermal considerations.

Time-Current Characteristics

Graphs and characteristic curves illustrate virtual melting times and pre-arcing times versus prospective short-circuit currents (symmetrical RMS). These curves confirm fuse operation within defined time frames under fault conditions.

Standards and Compliance

The fuse-links comply with the following standards:

  • IEC 60282-1
  • IEC 60644 (for British standard fuses)
  • BS 2692-1
  • ESI 12-8

Packing and Handling

Packaging details are provided for each fuse type to ensure safe transport and storage, though specific packing methods are not detailed in the excerpt.

Summary of Critical Information

  • HHB fuse-links are designed for high-voltage applications with reliable time-current characteristics.
  • Available in multiple voltage classes (3.6 kV to 24 kV) and current ratings (6.3 A to 450 A).
  • Compliant with international and British standards ensuring safety and performance.
  • Technical data includes physical dimensions, rated currents, breaking capacities, melting and clearing integrals, power loss, and cold resistance.
  • Characteristic curves provide essential information for system protection coordination.

This document serves as a comprehensive technical reference for selecting and applying HHB high-voltage fuse-links in electrical power systems.

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Catalog excerpts

High-voltage fuses according to British standards-1

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Arial", sans-serif; } .font1 { font:12.00pt "Arial", sans-serif; } .font2 { font:14.00pt "Arial", sans-serif; } .font3 { font:26.00pt "Arial", sans-serif; } .font4 { font:39.00pt "Arial", sans-serif; } HHB-Sicherungseinstze Hochspannungs-Hochleistungs-Sicherungseinstze nach britischer Norm HHB Fuse-Links High-Voltage Fuse-Links acc. British Standard Einleitung / introduction TcchnischoDaten nach Baureihen / Technical Data Types of Fuses 117 HH-Katalog/ HV-Catatogueo 2009-09 SIBA GmbH &Co, KG ⠕ www,siba,de info^siba de ^

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High-voltage fuses according to British standards-2

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High-voltage fuses according to British standards-3

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High-voltage fuses according to British standards-5

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High-voltage fuses according to British standards-7

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High-voltage fuses according to British standards-9

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High-voltage fuses according to British standards-10

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:4.00pt "Arial", sans-serif; } .font1 { font:7.00pt "Arial", sans-serif; } .font2 { font:8.00pt "Arial", sans-serif; } .font3 { font:10.00pt "Arial", sans-serif; } .font4 { font:11.00pt "Arial", sans-serif; } .font5 { font:12.00pt "Arial", sans-serif; } .font6 { font:14.00pt "Arial", sans-serif; } .font7 { font:18.00pt "Arial", sans-serif; } .font8 { font:20.00pt "Arial", sans-serif; } .font9 { font:27.60pt "Arial", sans-serif; } .font10 { font:11.00pt "Georgia", serif; } .font11 { font:50.00pt "Georgia", serif; } [SIBA]...

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High-voltage fuses according to British standards-11

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:12.00pt "Arial", sans-serif; } .font1 { font:13.00pt "Arial", sans-serif; } .font2 { font:14.00pt "Arial", sans-serif; } .font3 { font:18.00pt "Arial", sans-serif; } .font4 { font:25.00pt "Arial", sans-serif; } .font5 { font:50.00pt "Georgia", serif; } HHBO-B-Sicherungsenstze; britischer Standard, ldicht / Fuse-Links, British Standard, oiltight [3|BA] 24 kV Z«t/5trom-Kennlinie Time-current :haracterist>c Durchlass-Strom Cut-ofT current 127 HH-Katalog/ HV-Catatogue o 2009-09 SIBA GmbH & Co, KG ⴕ www.slba.de [email protected]...

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High-voltage fuses according to British standards-13

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:7.00pt "Arial", sans-serif; } .font1 { font:10.00pt "Arial", sans-serif; } .font2 { font:12.00pt "Arial", sans-serif; } .font3 { font:14.00pt "Arial", sans-serif; } .font4 { font:18.00pt "Arial", sans-serif; } .font5 { font:25.00pt "Arial", sans-serif; } .font6 { font:6.00pt "Arial Black", sans-serif; } .font7 { font:50.00pt "Georgia", serif; } .font8 { font:7.00pt "Lucida Sans Unicode", sans-serif; } HHBM BM-Sicherungseinsatze: Motorschutz/Fuse-Links: Motor Protection [S|Qj\] Mmumii 3,6 kV Z«t/5trom-Kennlinie Time-current...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.