Every circuit breaker has a characteristic curve that reports the manner in which it trips. Siemens Industry Catalog - Energy - Low-voltage - Power distribution - Low-voltage components - SENTRON Protection, Switching, Measuring and Monitoring Devices - Fuse Systems - 3NA, 3ND LV HRC Fuse Systems - LV HRC Fuse Links Restricted Item . These fuses are available in a wide range from 2A-800A, in different sizes and mounting options viz. A typical fuse is made of silver-coated copper strips and granular quartz [7]. BS 3871 covers older MCBs with numerical designations Types 1 - 4, and BS 60898 is the … Dual indication. Class ‘gG’ Fuse Links provides complete protection of cables. Thanks . EFEN’s general-purpose and back-up fuse-links are a reliable safety interface for transformers, capacitors and high-voltage motors. During this time if the fault gets removed, then it does not blow off. This rule consists in checking, on the fuse time/current curve, that the maximum current that blows the fuse at time T, corresponding to the time constant of the transformer, is always greater than the transformer inrush current. The curve is therefore showing the total I2T time to rupture the fuse and this is the most important number. Time-Current Characteristic Curve (Full Size Curves Available) Industrial HRC Fuse BAO 21.4 x 87mm, BS88, IEC 269-1 Offset Bolted Tags Form No. 2 Plug-in Miniature Circuit Breakers. ABB offers a full range of DIN-type HRC-fuse links from 2 to 1250 Amperes, 500 V and 690 V. High performance and reliability Fuses have very high limiting capability, clearing faults rapidly at different voltage and short circuit levels. When the element melts, the spring pulls the two parts of the element apart, extending the arc and quenching it in the liquid. This type of fuse was developed by General Electric Company. Inappropriate Type for application 3. The fuse element is anchored to the top ferrule of a glass tube filled with a quenching liquid - usually a hydrocarbon. You can find them on the web, if I remember right you can select an MCB from these. To find out which LV HRC fuse bases and safety switching devices can be used with the SITOR fuses, please refer to the chapter "Low-voltage fuse systems". My understanding is these are used when the load is a motor, to handle the high starting current but still protect when running. When the fault current passes through the fuse, the fuse element melt and break. Fault 15 . How do we decide, if need a HRC fuse for a particular application. With a wide current range, multiple voltage ratings and high short circuit strength, Siemens 3NA fuses are perfectly equipped for overcurrent protection in buildings & industries. Indicator fuses can be attached to the associated fuselink, or mounted separately in panel-mounted fuseclips. Domestic Switchboard Equipment. They were primarily designed as general purpose fuses for the protection of conductors. 1. In this of fuse, the breaking capacity is increased by using two or more separate silver elements in parallel. Find it Products View By. BS88-2 Fuses gG/gM Sizes A,B,C General Purpose Fuses IEC General Purpose Fuses IEC • The fuse complies with standard EN 60269-2 section II and standard BS 88 part 2. The range includes types for indoor, outdoor and oil-submerged applications and is nationally and internationally approved. I spoke to one of the ferraz shawmut application engineer and he advised me that all of their fuses are HRC. Check out our online store for more Circuit Protection products. CAMASTER HRC FUSE HOLDERS– Ratings, catalogue Numbers & Dimensions 29 SAFELOC HRC FUSE HOLDERS– Introduction 30 SAFELOC HRC FUSE HOLDERS– Ratings, catalogue Numbers & Dimensions 31 USEFUL TELEPHONE NUMBERS: Burton Product Sales Tel: +44 (0)1509 882600 Fax: +44 (0)1509 882786 Export Orders Tel: +44 (0)1509 882751 Fax: +44 (0)1509 882752 Applications Engineers Tel: … The standard is in four volumes, which describe general requirements, fuses for industrial and commercial applications, fuses for residential applications, and fuses to protect semiconductor devices. HRC fuses - BS type Siemens offers 3NW BS type of fuses suitable for use in both industrial and building applications. General Manager PDL Industries Aust Pty Ltd. RE: HRC Fuse RAVWARD (Electrical) (OP) 11 Oct 06 18:06. What is the load? FES – HRC-II Fuses. Fuse-links by EFEN comply with national and international standards and regulations such as DIN/IEC 60269 and VDE 0636. IEC Size In [A] Ph [W] Type Order Code 000 2 3.9 OFAF000H2 1SCA022627R0230 4 1.5 OFAF000H4 1SCA022627R0310 6 1.6 OFAF000H6 1SCA022627R0400 Regards . More details . High rupturing capacity HRC fuses. HRC fuses to allow you the customer to either install a new swtchboard or retrofit your old one. You previously purchased this product. Is there any other type also? LV HRC fuse links 45 Fuse links from 2 A to 1250 A for selective line protection and system protection in non-residential buildings, ... istic curves of the fuse must lie. Fuses are the fastest & simplest current limiting devices. The enclosure of HRC fuse is either of glass or some other chemical compound. HRC Fuse according to BS 88 has a breaking capacity of 80 KA so it can break 7-10 KA as expected. Don't miss out on huge … Fuse, High Rupturing Capacity (HRC), British BS 88, LET Series, 160 A, Bolted Tag, 150 VDC, 240 VAC. NH Fuse-Links. More filter. The HRC fuse has inverse time characteristic, i.e., if the magnitude of the fault current is high, then their rupturing time is low and for low magnitude fault current the rupturing time is high. This is my opinion. LV HRC Fuses: DIN Type Geared up for any situation Answers for Infrastructure. What this tells us is that the 200 ampere fuse has reduced the peak current during the fault from 230,000 amperes to 20,000 amperes. 9/20/95 This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Imin.fuse blow> X x Irt - X and T are coming from the transformer supplier’s characteristics table. In electrical engineering, IEC 60269 is a set of technical standards for low-voltage power fuses. Time-Current Curves Fuses 16 . On MCBs I have curves somewhere showing trip time vs current. The rest of the tube is filled with a spring that holds the element - or a strain wire in very high voltage fuse links - in tension. e, Neutral and Meter Links 12 Domestic Fusegear. In addition, a push-on adapter and microswitch attachment are available, to provide remote indication. Ferraz Fuses By Powerfuse.com. 16 HRC Fuse Cartridge. HRC fuse or high rupturing capacity fuse– In that type of fuse, the fuse wire or element can carry short circuit heavy current for a known time period. RE: Grading of HRC fuse with MCB. High Capacity HRC Cartridge Fuses. Now read from this point horizontally to the left and read a peak let-through current of approximately 20,000 amperes. Fewer filter. Add. Siemens Industry Catalog - Energy - Low-voltage - Power distribution - Low-voltage components - SENTRON Protection, Switching, Measuring and Monitoring Devices - Fuse Systems - SITOR Semiconductor Fuses Time-Current Curves Circuit Breakers 17 . The characteristic curves for the configuration and assignment of SITOR fuses to fuse bases and 3NP and 3KL safety switching devices can be found in the Catalog ET B1 Add-On Characteristic Curves and on the Internet. The enclosure in which the fuse element is placed is filled with the chemical powder. Inappropriate Sizing 2. 14 Service Fuses. CSA HRC Fuses and Fuse Holders; Look for a product. Time-Current Characteristic Curve I t (Ampere Seconds)2 2 This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Time-Current Curves Fuses 800 A Fuse Rating What would cause a fuse to blow? That is why the chosen fuse-link rated voltage should not be less than 1.1 times that of the rated voltage of the capacitor unit. usa revision: time current characteristic curves drawing no. Trip-indicator fuses are available for use in parallel with the main fuse. HRC Fuse or High Rupturing Capacity Fuse. Fuse blocks are also available for most applications. DIN-type, HRC-fuse link range. Fuses with gG characteristics protect associated cables against both overload and short-circuit current, provided that the current rating of the fuse 1N is equal or less than the current carrying capacity of the cable 1z. Our best selling products are 100amp HRC Fuse Cartridge 30 x 57mm - FM100, 80amp HRC Fuse Cartridge 30 x 57mm - FM80, 63amp HRC Fuse Cartridge 30 x 57mm - FM63 and Back Wired Service Fuse Including 100A Cartridge - SHRC100BW . The minimum fault value for an HRC fuse is 80kA. NH fuses are one-time fuses, meaning once they have blown, they must be replaced with a new fuse with the same characteristics. The FLA is 37 Amp. Founded in 1969, Norberg~IES is a leading distributor for Ferraz Fuses. A fuse should be selected with a rating just above the normal operating current of the device to be protected. _____ Give masochists a fair crack of the whip Register to Reply: PWSlack. Customer care center Need a new or replacement fuse fast? Powerfuse.com offers an extensive line of products from high speed DC and high voltage fuses, to an offering of fuse blocks, clips, power distribution blocks, and fusible and non-fusible disconnect switches. Deviations of ±10 % are permis-sible in the direction of the current axis. Each 1+ £16.81 £20.172 5+ £15.98 £19.176 10+ £14.67 £17.604 20+ £14.38 £17.256 50+ £14.08 £16.896. View in Order History. Actually, what I am trying to do here is: Selection of a fuse for 1000 KVA, 15.5 KV . Minimum order of 1 items Multiples of 1 only Please enter a valid quantity. Preferred rating of HRC fuses are 2, 4, 6, 10, 16, 25, 30, 50, 63, 80, 100, 125, 160, 200, 250, 320, 400, 500, 630, 800, 1000, and 1250 amperes. There is no emission of gases after a short circuit occurs. NH fuses (also known as NH Knife Blade Fuses or DIN NH Blade Fuses) were defined in the German DIN standard 43620 around 1944. Type 2 MCBs are not listed under BS 88: BS 88 is a fuse standard. In other words, this is the current-limiting effect of the 200 ampere fuse. of the 200 ampere fuse curve. BAO Page 1 of 1 BIF Doc #4112 Bussmann ® rev. 13 S Series Surface Main Switches. Btw Vynckier is a Belgian company. Selected HRC Fuse Links should have current rating not less than the normal full load current of circuit. Gordon Brown. I think this is 5 seconds for a fixed installation and 1 second for portable appliances. We offer HRC Service Fuse 80 AMP & 100 AMP at factory rates. HRC fuses are normally connected in series with capacitor units or banks. 8 Fusegear BS and DIN HRC-fuse links HRC fuse links, DIN-type, gG Ordering information HRC fuse links, gG, universal fuses OFAF_H_, ≤ 500 V The type code includes one fuse link. Otherwise, it blows off or melts. Then draw a line up to the fuse curve for your chosen fuse. Time-Current Curves Circuit Breakers No action to left of curve Trip or clear on and to right of curve All devices should be considered at same voltage 18 . A general approach is that it should operate at 1.2 times the rated current. At the point which the line meets the fuse curve, draw a line across to the y-axis and you have you disconnection time. blade tag, central tag & offset tag. They are activated when these units become faulty under normal operating voltages, including the transient voltage as the capacitor are being energized. EATON BUSSMANN. 15 HRC Fuse Holders. s 17. test voltage: time constant/power factor: fuse catalog number: drawn by: lll date: chicago, il. Fuses of different utilization categories and technical parameters are employed for the protection of semiconductors, depending on the place of installation and required degree of protection for the power semiconductor used (diodes, thyristors, GTOs, IGBTs, etc. But why an HRC fuse? 7 Activ. ScottyUK (Electrical) 24 Apr 08 14:20. Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. 20,000 amperes, to handle the high starting current but still protect when running if need a new with... Give masochists a fair crack of the device to be protected typical fuse is either of glass or other. Look for a product and microswitch attachment are available in a wide range from 2A-800A, in different sizes mounting! Items Multiples of 1 BIF Doc # 4112 Bussmann ® rev 200 ampere fuse has reduced the peak current the. Selected HRC fuse is either of glass or some other chemical compound date: chicago, il for. Using two or more separate silver elements in parallel with the chemical powder an HRC fuse made! In the direction of the device to be protected nationally and internationally approved ±10 % are permis-sible in the of. 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