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High Voltage Fuses
German DIN Standard |
For Air & Gas Insulated Switchgears Outdoor Switchgears
SIBA HV Fuse-links have parallel connected pure silver fuse-elements. The design and method of production of the elements ensures narrow tolerances of time-current characteristics. The fuse elements are wound on a ceramic support and are attached to the silver plated connection caps by means of spot-welding. The connection caps are fitted inside the silver plated copper end caps by spot welding.
The copper end caps themselves are press-fitted onto the porcelain tube which is glazed inside and outside. The end caps are furthermore mechanically fixed to the
porcelain tube and additionally sealed by a durable elastic sealing medium. This sealing method has been proven over many decades of positive field experience
and ensures tightness against ingress of humidity.
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High Voltage Fuses
Motor Circuit Protection – Din And British Standard |
SIBA Motor Rated Fuses are available in German DIN Standard and British Standard Design. The large variety in body sizes / mounting style/ Voltage and Amp rating allow great flexibilityfor the designer of switchboard panels.
Standards:
Dimensions: DIN 43625 and
BS 2692
Electrical: IEC 60644
IEC 60470
IEC 60282-1
Class: Back up
Voltage Ratings: AC 3.6 - 7.2 kV
Current Ratings: 50 - 315 A
Protection of Motor circuits according IEC 60644
High resistance against cyclic and peak current loads / avoiding ageing because of high motor start up currents
Low power losses / minimizing temperature increase in narrow contactor enclosures
Low minimum interrupting currents for operation of overcurrents in the range 3 - 3.5 x rated current
Availability of SIBA-Temperature limiters for switchgear protection against excessive temperature rise
Type tested according IEC 60470 in cooperation with the major European Panel builders
Available in DIN 43625 and BS 2692 dimensions
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Medium Voltage Fuses
European Standard |
For Installation Inside Transformers Under Oil
General purpose fuses installed in transformers
Space and cost saving in distribution transformer substation design
Protection against short-circuit and internal transformer faults
Bursting protection of the transformer through specific characteristic of the fuse-link
Resistance against ageing
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Medium Voltage Fuses
British Standard |
Medium voltage fuses according British Standard are backup fuses for the protection of substations up to 24 kV. The fuse links of this section comply with the following national and international standards:
IEC 60282-1
BS 2692
ESI 12-8
Design and construction of these fuses follow the well-proven concept of all SIBA high-voltage fuse-links. For pressure resistant encapsulation, high grade ceramic is used. Contact material consists of silver plated high conductivity copper. The pure silver melting elements are provided with appropriate notches to ensure small time/current-curve tolerances and low let-through currents. The arc quenching quartz sand is subject to special survey criteria regarding its composition, grain size and humidity content.
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Medium Voltage Fuses
French Standard |
For Air & Gas Insulated Switchgears Outdoor Switchgears
High-Voltage fuse-links of size 55 x 520 mm are suitable for the protection of power transformers used in energy distribution. Usually they are used for
indoor application, outdoor use is possible. In case of a short circuit the fuse will interrupt fault currents between five times the fuse rated current and the
rated breaking current.
Standards:
IEC 60282-1
NFC 64210
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Medium Voltage Fuses
European Standard |
Medium voltage fuses Plug-in fuses for overhead lines
Medium voltage fuse links including overhead line connectors are provided as a set. They allow in overhead lines to provide fuse protection on pole mounted distribution transformers. The set consists of a high voltage fuse link including a set of contacting armatures
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