Tron hrc form ii class c fuses tron hrciic fuses are designed to withstand inrush currents on typical motor startups while offering high current limitation in the shortcircuit region. Fuses with gg characteristics protect associated cables against both overload and shortcircuit current, provided that the current rating of the fuse 1n is equal or less than the current carrying capacity of the cable 1z. There are different types of fuses available in the market. Other chemical compounds are also used in hrc fuse manufacturing and construction based on different factors. Catalog lv 10 20162017 update commercial data 2017 siemens. They are generally used for motor short circuit protection in deadfront holders, and are normally required to be used in conjunction with a motor running overload device.
Asbestos sheet of at least 6mm thick shall be provided for separation between front and rear compartments. Hrc fuse construction, working and characteristics. Figure a shows the essential parts of a typical hrc. The rated breaking capacity is 80 ka at 690v or 120 ka at 500v. Types of fuses and their applications codrey electronics. If you do not wish to build working flaps, simply glue them into position. Switch disconnectors with fuses electromatic products. Tabulations of circuit breaker, fuse and other protective device ratings versus calculated. Drip depot carries all major brands of irrigation equipment and supplies at great prices.
Concept and working of different types of fuses protection. They are quite reliable and can be selected for proper discrimination. Apr 25, 2016 the low and uncertain breaking capacity of semi closed fuses is overcome in hrc fuses. Selection guide fuse characteristics, terms and consideration. Performance testing of hrc fuse links fuse electrical relay. Hrc fuse links according to iec 602691en 602691 sizes lv. Some fuses are designated high rupture capacity hrc or high breaking capacity hbc and are usually filled with sand or a similar material.
Electrical protection iii hrc fuse hv fuse types of fuses a low voltage fuses. Doorcoupling rotary operating mechanism for operation of switch disconnector outside. Cheques accepted but must be cleared prior to despatch. Jun 16, 2020 linktype cartridge fuses are also known as high rupturing capacity fuses hrc. As clear from the figure above, the fuse element have a portion of tin alloy, known as a eutectic material. Performance testing of hrc fuse links fuse electrical.
The doors shall be arranged to unlock from a manual unlocking device located 40. Hrc fuse construction working advantages and disadvantages. Hrc fuse high rupturing capacity fuse and its types. Final fuse selection should be performed by qualified personnel able to fully assess an applications circuit protection requirements. High rupturing capacity hrc fuses owlcation education. Hrciic currentlimiting fuses cgl 600 volt, 1 to 600 amps form no. This type of fuse is very reliable in performance and can be used when discrimination is required. Hrciic series hrc form ii class c fuses littelfuse. This necessitates requirement of additional front indication. Hrc fuses type 3na3introduction lv hrc fuses during installations, when the hrc fuses are mounted on the fuse bases or switch disconnector fuse units in panels above certain height, it is very difficult to identify the status of the fuse link. Selected hrc fuse links should have current rating not less than the normal full load current of circuit. Din square bodied, dual indication industrial fuses.
Hrc fuse base 400a hrc fuse base manufacturer from gandhinagar. An hrc fuse is a type of cartridge fuse, in which the fuse element is enclosed within a transparent capsule, usually made up of steatitea ceramic material having good mechanical strength. You can wait until you are well into wing construction until deciding whether or not to build working flaps. Hrc fuses present a number of features such as low watt loss. Switch disconnectorswitch disconnector fuse, hrc fusefuse base. The current carrying element is completely surrounded by the filling powder. Steatite insulator, corrosionproof aluminum metal parts with fullcontact, silverplated copper blades. The fuse element uses silver or copper for its construction. This ceramic body includes metalend caps that are welded through an element that carries silvercurrent. The characteristic of an hrc fuse is compared with that of an induction relay. S01574a ofaa s01574a fusegear bs and din type hrcfuse links.
The architectural focus of the building is a state of the art and modern. Feeder pillar shall have air circuit breaker or hrc fuse base with links of 800a630a on. Without flaps, the takeoff roll is a bit longer and the landing speed is a bit faster. So this article discusses an overview of what is hrc fuse, working principle, construction, and its applications. Operating time of fuse for motor inrush current, shall be greater than 10 m. Hrc fuse construction and hrc fuse working deepakkumar yadav. The disadvantage of all types of fuses, of course, is the fact that when they have. Olr to be connected in phase circuit to reduce cost. To install them in their holders, the usual practice is to screw the fuse to the inside of the fuse holder wedge which then slides into the holder base. Sentron sivacon alpha chapter switch disconnectors. The internal space of the fuse body is filled by a filling powder material. Fuses o plug o cartridge o knife blade o time delay o class h code o. If you need assistance in selecting a fuse, contact the eaton. The filling of the fuse with powdered pure quartz acts as an arc extinguishing agent.
Hrc fuse means high rupturing capacity fuse which is a modern type fuse. But the most typical voltage levels for low voltage fuses are 500 v, 690 v and 750 v. Manufacturers are now using epoxy resins instead of ceramic material. Indo asian range of switch disconnector fuses sdf, hrc fuses and fuse bases not only meet, but surpass all international and national standards. The industrial versions are characterised by either clipin tags, offset tags or centre tags. Operating time of fuse for motor starting current, shall be greater than 8 sec. S01574a ofaa s01574a fusegear bs and din type hrcfuse. Both the ends of ceramic body consist of metal end caps. Extract from lv 10 102018 digital asset management siemens. Pdf selection of hrc fuse motor full load current inrush. Hrc fuse high rupturing capacity fuse is one kind of fuse, where the fuse wire carries a short circuit current in a set period. Fuse characteristics can be classified into three general categories.
Fuse links fuse links gg nh type nh fuse links gg class for general use, with top indicator. During this period, if fault is removed, then it does not blow off otherwise it will melt and remove the circuit from electrical. Should you have any questions or require some additional pictures. Hrc fuses mainly consist of a heat resisting ceramic body. In motor circuits, the motor starter will provide the overload protection and the fuses will provide the shortcircuit. Iec 60269 din 43620 range 6 to 630a size 000,00,1,2,3, 01, 02, 03 rated voltage. Construction fusible elements are silver, helically coiled, and of solderless construction.
Industries offer a wide range of peco makes hrc fuse base, typefb. Nh fuse din type blade contact hrc fuse contains a fuse wire in it, which carries the short circuit current safely for a given time period. Generally the material used for hrc fuse is glass but which is not always in the case. Quality irrigation supplies for homeowners and professionals. Hrc fuse operation, types and characteristics technical books pdf.
Construction and features range overview switch disconnector fuse 2. Scribd is the worlds largest social reading and publishing site. For power takeoff from field distribution bus up to 400 a. Importance of design and installation of backup protection. Hrc fuse links, bstype ordering information bs type fuse links, gg, 500 v, 80 ka the type code includes one fuse link, but the delivery batch is according to the column. Other than the glass some chemical compound also used to make hrc fuse and it depends on construction based on different factors. The latest version of this document is available in pdf format on the ita. It does not deteriorate and has a high speed of operation fig. Hrc fuse consists of heat resisting ceramic body having metal end caps on which silver current carrying element is welded in a special manner as shown in figure below. In cases, the value getting is higher than 0v dc, this means than there is a need to remove it. In power plants, hrc fuses are used extensively to protect buses, feeders and loads. Fuse links fuse links am nh type nh fuse links am class for motor protection, with top indicator.
Sdf offering of indo asian contains a number of unique features which provide many advantages to the customers, most notably the quad break principle which enables a drastic reduction in. Construction of hrc fuse the hrc fuse consists of a heat resistance ceramic body usually of steatite, pure silver element, clean silica quartz, asbestos washers, porcelain plugs, brass endcaps and copper tags shown in fig. Use construction drawings to develop a material takeoff. The distinguishing feature of sloblo fuses is that these fuses have additional thermal inertia designed to tolerate normal initial or startup overload pulses. Nh fuse links hrc df electric pdf catalogs technical. The construction of hrc fuse includes a material that has high heat resistant body like ceramic. It interrupts current flow and protects from over current. The rupture capacity is the maximum current that can safely be. Disconnector with hrc fuse mccb 1 the breaking capacity is 80ka not more than 20ka 2 cost of hrc fuse less more expensive 3 it must be repairable not repairable 4 not affected by ambient fully depend on ambient 5 fusing 1. Fuses for highvoltage equipment, up to 115,000 volts, are rated by the total apparent power megavoltamperes, mva of the fault level on the circuit. Switch disconnectorswitch disconnector fuse, hrc fuse.
The following fuse selection tables are based on the 2017 nec and provide fuse recommendations for the listed applications. Bs fuse in a ph w type order number delivery weight type batch unit pcs kg tag type. In 19301931 under the aanatydmqnt manual of glushko in gdl was develonsd. Class gg fuse links provides complete protection of cables.
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