What is HRC fuse link?
C&S HRC fuse-links have been developed & designed to meet the requirements of modern industrial installations & available in breaking capacity which are sufficient enough to meet the highest short-circuit levels. Class ‘gG’ Fuse Links provides complete protection of cables.
What is HBC fuse link?
HBC-High Breaking Capacity Fuse Links HBC links conform to IS 13703-2-1 (1993) and IEC 269-1986. They have a high breaking capacity of 80KA at 500V and 50Hz. They have been tested at CPRI/ERDA. Salient Features. – Reduced electro magnetic stress by eliminating distortion in adjacent current carrying parts.
What is HRC cartridge fuse?
An HRC fuse is a type of cartridge fuse, in which the fuse element is enclosed within a transparent capsule, usually made up of steatite–a ceramic material having good mechanical strength. Manufacturers are now using epoxy resins instead of ceramic material. The capsule is provided with two end caps.
How do I choose a HRC fuse?
One of the most important factors while selecting a HRC fuse-link is its Power-loss. The rated power- loss of the fuse-link is the power- loss value as stated by the manufacturer when the fuse-link is carrying its current under specified conditions. The fuse- link selected should preferably have low power-loss.
What are the disadvantages of HRC fuses?
Disadvantages of H.R.C Fuse:
- After each operation, they have to be replaced.
- Heat being produced by the arc may affect the associated switches.
Why are HRC fuses used?
HRC fuses are used to protect the circuit from short circuits in HV switchgear.
What is the difference between HRC and HBC fuse?
The fuse is the oldest device used to protect electrical circuits and equipments against overload and short circuits. 3- High Rupturing Capacity (H.R.C) or High Breaking Capacity (H.B.C) Fuses. The Semi-enclosed Fuse: This type is made from two sections, the base and the carrier.
Where would you use a HBC fuse?
In many industrial applications high breaking capacity (HBC) fuses are used to protect electrical installations against overcurrents, especially in the power distribution network. At high rated current, HBC fuses have more parallel fuselinks mounted inside.
What is the disadvantage of HRC fuse?
Disadvantages of HRC fuses : Heat produced by the arc may affect the associated switches. They have to be replaced after each operation.
What are the advantages of HRC fuses over cartridge fuses?
Advantages of HRC Fuse: Having high-speed operation. Provides reliable discrimination. Require no maintenance. Cheaper than other circuit interrupting devices with same rating.
What are the disadvantages of HRC fuse?
What is the operating principle of a HRC fuse?
Working Principle of HRC Fuse: Under normal operating conditions the current flowing through the Fuse element does not provide enough energy to melt the element. The chemical reaction between the fuse element vapour and filling powder results into high resistance material which helps in extinguishing the arc.
What should the HRC fuse link rating be?
Selected HRC Fuse Links should have current rating not less than the normal full load current of circuit. Class ‘gG’ Fuse Links provides complete protection of cables.
What kind of fuse links do GE use?
Motor Circuit Protection RED SPOT Standard Fuse Links combined with GE Power Controls ‘CL’ and ‘CK’ range of contactors and ‘RT’ thermal overload relays, provide certified Type 2 co-ordination in line with the latest International Standards (IEC 947-4-1).
What happens when a HRC fuse is blown out?
HRC Fuse with tripping device. As fault occurs, the first element to be blown out is silver fuse and current is transferred to tungsten wire. The travel of the plunger is set such a way that is not ejected from the fuse body during fault conditions.
What kind of material is used for HRC fuse?
The common material, which is used to make an HRC fuse is glass, but this is not always the case. Other chemical compounds are also used in HRC fuse manufacturing and construction based on different factors. Its external enclosure is made fully airtight in order to avoid the effect of atmosphere on the fuse materials.