Description and Features
Description
Purpose:
- Key component in electro distribution system
- Reliable protection in case of overload and short-circuit
Use:
- Distribution transformerstation – transformer protection
- RMU – ring main unit protection
Cables and lines – distribution system protection - Industrial electrical systems – motor drive protection, reactive power
- compensation protection, medium voltage loads protection
- Photovoltaic and wind power systems – transformer substation protection
- Railway and metro systems – power supply protection
Product range
- Nominal voltages: 7,2kV, 12kV, 17,5kV, 24kV, 36kV
- Rated currents: From 1A to 315A
- Characteristics: Back-up, Full-range (in development)
- Striker indication: 50N (VVC3), 80N (VVT-D3), without (VVA3)
- Oil-immersed fuse-links
Standardization
- IEC 60282-1 – Ed-8.0/2020 Current-limiting fuses
Basic requirements for MV fuse-links, 50Hz and 60Hz voltage above 1000V AC - DIN 43625 – Hochspannungs-Sicherungen
German standard for MV fuse-links nominal voltages from 3,6kV to 36kV - VDE 0670 T402 – Wechselstromschaltgeräte fur Spannungen über 1kV
Instructions for MV fuse-link selection
MV fuse-links: Advantages
- Reliable sealing system against humidity irruption.
- KEMA type test reports.
- Low temperature rise because of low power dissipation.
- Low minimum breaking currents.
- Low switching voltages.
- High breaking capacity 63 kA.
- Galvanically protected contact caps made of electrolytic copper can be nickel (NI), tin (Sn) or Silver (Ag) plated.
- Striker system: a temperature sensitive element which does not react to short time overloads, only to inadmissible values of temperatures. Convenient for the protection of the fuse-links, installed in enclosures or SF6 switchgears.
- Rigid striker pin.
- Various striker variants (50Nm 80N, without striker, thermo, non-thermo..)
- Silver melting element.
- Easier mounting because of improved contact cap.
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Selectable variants
Available Documents
Extra Information
Contact Our Engineering team
Contact Our Engineering team
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