LV HRC Fuses: DIN Type Geared up for any situation Answers for Infrastructure. s 17. 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. They were primarily designed as general purpose fuses for the protection of conductors. When the fault current passes through the fuse, the fuse element melt and break. Time-Current Curves Circuit Breakers 17 . 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 . Fuse, High Rupturing Capacity (HRC), British BS 88, LET Series, 160 A, Bolted Tag, 150 VDC, 240 VAC. 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". More filter. During this time if the fault gets removed, then it does not blow off. A fuse should be selected with a rating just above the normal operating current of the device to be protected. 14 Service Fuses. Actually, what I am trying to do here is: Selection of a fuse for 1000 KVA, 15.5 KV . Don't miss out on huge … You previously purchased this 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. 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. This type of fuse was developed by General Electric Company. HRC fuses are normally connected in series with capacitor units or banks. 1. Now read from this point horizontally to the left and read a peak let-through current of approximately 20,000 amperes. In addition, a push-on adapter and microswitch attachment are available, to provide remote indication. Find it Products View By. EATON BUSSMANN. RE: Grading of HRC fuse with MCB. Thanks . Selected HRC Fuse Links should have current rating not less than the normal full load current of circuit. I spoke to one of the ferraz shawmut application engineer and he advised me that all of their fuses are HRC. 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. These fuses are available in a wide range from 2A-800A, in different sizes and mounting options viz. Ferraz Fuses By Powerfuse.com. Then draw a line up to the fuse curve for your chosen fuse. HRC fuses - BS type Siemens offers 3NW BS type of fuses suitable for use in both industrial and building applications. BS 3871 covers older MCBs with numerical designations Types 1 - 4, and BS 60898 is the … Fuse blocks are also available for most applications. Founded in 1969, Norberg~IES is a leading distributor for Ferraz Fuses. Imin.fuse blow> X x Irt - X and T are coming from the transformer supplier’s characteristics table. When the element melts, the spring pulls the two parts of the element apart, extending the arc and quenching it in the liquid. General Manager PDL Industries Aust Pty Ltd. High rupturing capacity HRC fuses. 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. In this of fuse, the breaking capacity is increased by using two or more separate silver elements in parallel. At the point which the line meets the fuse curve, draw a line across to the y-axis and you have you disconnection time. A general approach is that it should operate at 1.2 times the rated current. More details . Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. 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 The minimum fault value for an HRC fuse is 80kA. The range includes types for indoor, outdoor and oil-submerged applications and is nationally and internationally approved. Time-Current Curves Fuses 800 A Fuse Rating What would cause a fuse to blow? 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: … But why an HRC fuse? 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. Indicator fuses can be attached to the associated fuselink, or mounted separately in panel-mounted fuseclips. 16 HRC Fuse Cartridge. usa revision: time current characteristic curves drawing no. Trip-indicator fuses are available for use in parallel with the main fuse. test voltage: time constant/power factor: fuse catalog number: drawn by: lll date: chicago, il. Customer care center Need a new or replacement fuse fast? Dual indication. CSA HRC Fuses and Fuse Holders; Look for a product. A typical fuse is made of silver-coated copper strips and granular quartz [7]. Add. 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. 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 13 S Series Surface Main Switches. 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. Every circuit breaker has a characteristic curve that reports the manner in which it trips. 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. Minimum order of 1 items Multiples of 1 only Please enter a valid quantity. Domestic Switchboard Equipment. In electrical engineering, IEC 60269 is a set of technical standards for low-voltage power fuses. The enclosure in which the fuse element is placed is filled with the chemical powder. There is no emission of gases after a short circuit occurs. How do we decide, if need a HRC fuse for a particular application. 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. High Capacity HRC Cartridge Fuses. 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. of the 200 ampere fuse curve. Siemens Industry Catalog - Energy - Low-voltage - Power distribution - Low-voltage components - SENTRON Protection, Switching, Measuring and Monitoring Devices - Fuse Systems - SITOR Semiconductor Fuses 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. Btw Vynckier is a Belgian company. They are activated when these units become faulty under normal operating voltages, including the transient voltage as the capacitor are being energized. HRC fuses to allow you the customer to either install a new swtchboard or retrofit your old one. You can find them on the web, if I remember right you can select an MCB from these. 15 HRC Fuse Holders. 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 . Fuses are the fastest & simplest current limiting devices. Class ‘gG’ Fuse Links provides complete protection of cables. BAO Page 1 of 1 BIF Doc #4112 Bussmann ® rev. 7 Activ. 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. NH Fuse-Links. Fuse-links by EFEN comply with national and international standards and regulations such as DIN/IEC 60269 and VDE 0636. The FLA is 37 Amp. Deviations of ±10 % are permis-sible in the direction of the current axis. RE: HRC Fuse RAVWARD (Electrical) (OP) 11 Oct 06 18:06. Type 2 MCBs are not listed under BS 88: BS 88 is a fuse standard. Gordon Brown. The enclosure of HRC fuse is either of glass or some other chemical compound. 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. EFEN’s general-purpose and back-up fuse-links are a reliable safety interface for transformers, capacitors and high-voltage motors. Is there any other type also? My understanding is these are used when the load is a motor, to handle the high starting current but still protect when running. In other words, this is the current-limiting effect of the 200 ampere fuse. Fault 15 . Time-Current Curves Fuses 16 . The fuse element is anchored to the top ferrule of a glass tube filled with a quenching liquid - usually a hydrocarbon. We offer HRC Service Fuse 80 AMP & 100 AMP at factory rates. 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. Restricted Item . Inappropriate Sizing 2. ScottyUK (Electrical) 24 Apr 08 14:20. On MCBs I have curves somewhere showing trip time vs current. HRC Fuse or High Rupturing Capacity Fuse. This is my opinion. HRC Fuse according to BS 88 has a breaking capacity of 80 KA so it can break 7-10 KA as expected. 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. The curve is therefore showing the total I2T time to rupture the fuse and this is the most important number. 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. 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. Inappropriate Type for application 3. Otherwise, it blows off or melts. 2 Plug-in Miniature Circuit Breakers. _____ Give masochists a fair crack of the whip Register to Reply: PWSlack. I think this is 5 seconds for a fixed installation and 1 second for portable appliances. 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. NH fuses are one-time fuses, meaning once they have blown, they must be replaced with a new fuse with the same characteristics. 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. blade tag, central tag & offset tag. 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. NH fuses (also known as NH Knife Blade Fuses or DIN NH Blade Fuses) were defined in the German DIN standard 43620 around 1944. Check out our online store for more Circuit Protection products. 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