We are using ABB make, REF type relay for 11kv grid feeder. For HT cable you have to consider S.C level of utility first than Current carry capacity of Cable. Portfolio » Fraunhofer IDMT. Institute of Digital Media Technology, India (IDMT.IN) is the best Digital Media Applications Training Institute in Bhubaneswar, Odisha. He has published numbers of Technical Articles in “Electrical Mirror”, “Electrical India”, “Lighting India”,”Smart Energy”, “Industrial Electrix”(Australian Power Publications) Magazines. And i had a doubt, this realy implementation and configuration and setting are different from one another?????? Just sharing my knowledge, Always remember that we must limit ENERGY (thermal) of fault. Settings are applied in amps. It means that the trip time is inversely proportional to the fault current. IDMT: The jack of all trades. sir,i need testing procedure of over current relay. The formula is: t(I) = {(A) / [(I/Is)a -1]} x TMS. Free Course! Relay Details. Since it is energy it is always consist of Power (P) which equal with current (I) and consist of t (time). Whereas high over current setting is to limit short circuit withstand. and Please clear how you considered TMS is 0.125 for low over current setting? Pickup Setting of over current Relay (PMS) (I>) should be satisfied following Two Condition. thankyou. Thank you……. group 0. PSM = 600 * 1.05 /800 =0.7875. Stand: 03/2020 Aktenzeichen der Behörde For HT Cable one important criteria which need to be consider is Short circuit level. He wants to Share his experience & Knowledge and help technical enthusiasts to find suitable solutions and updating themselves on various Engineering Topics. Hi, I am not clear with this explanation, can you explain with some example. you can not reproduce,republish or communicate any of the content , including files downloadable from this website, without the permission of the copyright owner.The use of this content on any other websites breaches copyright Act. IDMT relay have to set for Steady state fault current?can any one explain this? The CT ratio is 5: 1. • 10 - 40% in seven equal steps of 5%. dear elango, Tip: registered users can save calculations. Normally 11KV S.C level is 20 to 25KA at it varies according to Electricity provider company.. and normally 150 Sq.mm Cable S.C falls in 17 to 20KA. May I ask if the condition 2 should be (11000/600)=18.33>high set of 2.5 times instead of TMS? The Fraunhofer Institute for Digital Media Technology IDMT is doing applied research in the field of audiovisual media. , IEEE time dial (TD). Branding, Visual Design, Web Entwicklung; Seit 2014 arbeite ich immer wieder in Projekten des Fraunhofer-Instituts für Digitale Medientechnologie mit und bin bisher hauptsächlich für Web-App-Entwicklung zuständig gewesen. What should be nGR value for a 20 MVA, 132/6.6 KV Trnsformer, primary side fault 40 MVA for 1 sec. October 11, 2013 Die betreffenden Übersetzungen in roter Schrift werden nicht mit ausgedruckt und sollen auch nicht mit ausgedruckt werden. Required Over Load Relay Plug Setting= Over Load Current (In) / CT Primary Current. Dear Sir, Membership No:M-1473586.He has more than 16 years experience in Transmission -Distribution-Electrical Energy theft detection-Electrical Maintenance-Electrical Projects (Planning-Designing-Technical Review-coordination -Execution). Quaidjohar ME(Ele & Controls) Can you please guide to set the 87 relay for 110/33KV, 50MVA, 50Hz transformer. Sie ist ein wichtiges Zwischenprodukt im Mond-Verfahren. Relay pickup current (A). Please advice regarding df / dt relay minimum and maximum setting details. UVG-001-NI-FL-Antrag UVG-03/2020 Falls Sie eine der notwendigen Angaben nicht machen können, tragen Sie bitte „unbekannt”, „nein" oder „keine" ein. PHOTO DETAILS / DOWNLOAD HI-RES 1 of 4. Is = Set current. Login; Create Account; English. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Closing current Not more than 130% of current setting. Please advice. Mob 9422106251 letzte Änderung: 05.06.2012 KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft In some relays and literature, a TDM (Time Dial Multiplier) is used, instead of a. Operating Time of Relay for Normal Inverse Curve (t) =0.14 / ((PSM) 0.02 -1). At its headquarters in Ilmenau and its branch lab in Oldenburg Fraunhofer IDMT employs over one-hundred people working on the Institute’s research portfolio. Full text of "Annotationes priores & posteriores Gulielmi Budaei Parisiensis, Consiliari Regij, ac libellorum supplicum in regia magistri, in Pandectas.Nunc postremùm ad exemplar ipsius auctoris non paucis in locis emendatiores & locupletiores factae atque etiam à doctiss. 300A 0,15 NI By using this formula. What is the reference for it? by 2.97? For the above Example 3. Sonormed kooperiert mit Fraunhofer IDMT und setzt Individualisierung der Therapie-App Tin-nitracks fort Hamburg/Oldenburg 19.11.2015 – Das Medizintechnologieunternehmen Sonormed stellt heute auf der MEDICA in Düsseldorf seine Kooperation mit dem Fraunhofer-Institut für Digitale Medien-technologie IDMT vor. In this video we have explained calculation for IDMT over current relay setting calculation. He is Presently associate with one of the leading business group as a Deputy Manager at Ahmedabad,India. Close. Lösungen von Tetraamminnickel(II)-sulfat (links) und Kaliumtetracyanoniccolat(II) (rechts) Nickel und dabei v. a. Nickel(II)-Ionen bildet viele, meist farbige … The Institute is known as a competent partner of industry when it comes to developing groundbreaking technologies for the digital media domain. Membership No:F-1264873 ,M-1473586.He has more than 19 years experience in Transmission -Distribution-Electrical Energy theft detection-Electrical Maintenance-Electrical Projects (Planning-Designing-Technical Review-coordination -Execution). operating time of low current operating time is higher than high current setting. and how did you calculate min. Sir, Iec idmt curve formula. For Condition (1) 0.8 > =(480/600) = 0.8 >= 0.8, Which found, For Condition (2) 0.125 <=  11000/600 = 0.125 <= 18.33,  Which found, Selection of 3P-TPN-4P MCB & Distribution Board, Method for Installation of Cable & Wire (Part-1), How to Design Efficient Street Lighting-Part-4, How to Design Efficient Street Lighting-Part-3, How to Design Efficient Street Lighting-Part-2, How to Design Efficient Street Lighting-Part-1, Quick Reference Lighting Power Densities, Calculation of Crippling (Ultimate Transverse) Load on Electrical Pole, Various Factors for Illumination Calculations, Calculate Transformer Regulation & Losses (As per Transformer Name Plate), Type of Lighting Bulbs (Shapes and Sizes) Part-5, Type of Lighting Bulbs (Shapes and Sizes) Part-4, Type of Lighting Bulbs (Shapes and Sizes) Part-3, Type of Lighting Bulbs (Shapes and Sizes) Part-2, Type of Lighting Bulbs (Shapes and Sizes) Part-1, Methods of Earth Resistance Testing (Part-3), Methods of Earth Resistance Testing (Part-2), Methods of Earth Resistance Testing (Part-1), Method for Installation of Earthing Strip, Calculate Size of Anchor Fastener for Water Pipe Support. The content in electricalnotes.wordpress.com is for personal, non-commercial use only. The minimum Wir sind stolz darauf, das Akronym IDMT in der größten Datenbank mit Abkürzungen und Akronymen aufzulisten. How can we calculate the Min Fault Current and Max Fault Current? About Jignesh.Parmar (B.E,Mtech,MIE,FIE,CEng)Jignesh Parmar has completed M.Tech (Power System Control), B.E(Electrical). For IDMT relay having CT ratio 300:1, load current 470A, maximum fault current is 2380A and minimum fault current is 720A, then how to select upper and lower boundaries on TMS & Plug setting of relay. Thanks Thank you! PSM = 75 * 0.75 /100 =0.5625. Regards Can you guide me on how to calculate min & max fault current. please advise where we can find the min fault level data. thankyou, WHEN THE RELAY IS SET ON Low set , when fault current is marginally more than the full load current it will take more time to trip the breaker like 750 msec, WHEN THE FAULT CURRENT goes 10 times , Fault should get cleared in 50 m sec to protect the EQUIPMENT, DEAR SIR He is Presently associate with one of the leading business group as a Deputy Manager at Ahmedabad,India. But i have noticed that at some places 180 SQ. Enter your email address to follow this blog and receive notifications of new posts by email. For the above Example 1. Die folgende Abbildung zeigt eine der Definitionen von IDMT in Englisch: Intelligenz digitale Nachricht Terminal. Facebook Google LinkedIn Forgot your password? If You find this content in any other site,it makes the page you are viewing an infringement of the copyright. 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