IEC and IEEE standards govern high-voltage fuse-links. Fuses are divided into expulsion and current-limiting types. ABB fuses operate from 3 kV to 40.5 kV with current up to 315 A
Uses SF6 gas for arc extinguishing and insulation. Breaks without arc chopping or generating overvoltages. Operates with stored energy mechanism for independent operation. Sealed-for-life poles with lifetime pressure. Withstands insulation voltage at zero relative pressure
IEC 62271-200 covers metal-enclosed switchgear from 1 kV to 52 kV. Design depends on voltage, current, frequency, and short circuit power. Metal-enclosed design with segregated compartments is most common
Switchgear consists of circuit breakers, fuses and switches mounted in metal structures. Standards are defined by IEEE in North America and IEC in Europe. Switchgear protects, controls and isolates electrical equipment
SF6 gas is the universal technology for medium voltage breakers. SF6 offers superior dielectric strength up to 5 times that of air. Breaking technique uses auto-compression with SF6 gas. SF6 gas is non-toxic, non-inflammable and stable
Complete range of protection relays for medium voltage applications. Embeds latest communication protocols on serial or Ethernet links. Based on 100+ years of network protection relay experience. Includes embedded arc flash protection and virtual injection testing