Electro Sistem Days 2017 Mr Albert Vladimir / Mr Ottó Mayer. EFEN - Solutions Integrated
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1 Electro Sistem Days 2017 Mr Albert Vladimir / Mr Ottó Mayer Strictly convidential EFEN - Solutions Integrated
2 1. Company EFEN 2. Fuse standards LV, HV 3. Fuses categories LV, HV 4. Transformer protection with HV fuses 5. Transformer protection with LV fuses 6. Discrimination HV/LV fuses 7. Transformer protection with MCCB compare to fuses
3 Company EFEN
4 We are the specialist for safety interfaces in power distribution networks according to IEC- /DIN-standard Our systems distribute electric power, protect people and investments and ensure a smart power grid.
5 Infrastructure: airports, railway stations, buildings Power: power supply, power distribution grids, renewable energies Industry: production sites, office buildings etc.
6 1922 Company is founded by Otto Frees Relocation to new headquarters in Eltville Opening of production plant in Uebigau Eltville 1997 Founding of EFEN Hungary fuse production 2000 Founding of EFEN Poland / EFEN China / EFEN Slovakia Production + logistics in Uebigau 2006 EFEN becomes member of Hager Group 2015 Distribution cabinets and house service systems
7 42,3 million Euro turnover EFEN Poland 220 employees 5 proprietary sales organizations EFEN Germany EFEN Slovakia EFEN Hungary EFEN China Sales partners in 66 countries
8 Fuse standards
9 LV Fuse Standards IEC VDE Content General requirements Fuses for use by authorised persons Examples of standardized fuse systems (e.g., NH system) National Supplement 1: Protection of special electrical installations (gtr, gb and am AC V) Fuses for use by unskilled persons Examples of standardized fuse systems (e.g., D0 system) National Supplement 1: U = AC 690 V and U = DC 600 V Fuses for the protection of semiconductor devices TR Guidance for the application of low-voltage fuses Protection of solar photovoltaic energy systems 0635 D type fuses E 16 up to 25 A, 500 V; D type fuses up to 100 A, 750 V; 500 V 0638 Switch-fuse units; D0 system Fuse-combination units
10 HV Fuse Standarts IEC VDE Content High-voltage fuses Requirements for high-voltage fuse-links for motor circuit applications, High-voltage fuses current-limiting fuses High-voltage fuses for the external protection of shunt power capacitors TR Selection of high-voltage current-limiting fuse-links for transformer circuits Alternating current switch-fuse combinations Alternating current fused circuit-switchers
11 Fuse Categories
12 LV Fuse Categories Utilization category Application (characteristic) gg am gr gs ar gb gtr gpv Full-range breaking capacity fuse-link for general application, mainly for cable and line protection Partial-range breaking capacity fuse-link for short-circuit protection of motor circuits Full-range breaking capacity fuse-link for the protection of semiconductor devices (quicker than gs) Full-range breaking capacity fuse-link for the protection of semiconductor devices for increased line utilization Partial-range breaking capacity fuse-link for short-circuit protection o semiconductor devices Full-range breaking capacity fuse-link for mining application Full-range breaking capacity fuse-link for transformer protection, rated in transformer apparent power (kva) instead of rated current (A Full-range breaking capacity fuse-link for the protection of photovoltaic energy systems
13 LV Fuse Categories Utilization category Application (characteristic) gm Full-range breaking capacity fuse-link for motor circuit protection, dual rated (widely used in the United Kingdom) gn North American general application fuse, mainly for cable and line protection gd North American general application time-delay fuse, mainly for motor circuit protection gu General purpose fuse-link with wedge tightening contacts, similar to gg gk Full-range cable protection up to very high rated currents gi Former IEC time-delay fuse, replaced by gg gii Former IEC fast-acting fuse, replaced by gg gl Former VDE fuse for conductor protection, replaced with gg grl Manufacturer-specific designation, meanwhile standardized as gs ggr Manufacturer-specific designation, meanwhile standardized as gs gt Former VDE time-delay fuse, replaced by gg gf Former VDE utilization category (quick-acting), replaced by gg gtf Former VDE time-delay / fast-acting fuse, replaced by gb
14 HV Fuse Categories Utilization category Application (characteristic) Back-up fuses Protection from I3 up to I1( I1= breaking capacity) Full range fuses Protection from melting current up to I1 General Purpose fuses Breaking all current which cause them to melt in one hour up to breaking capacity HVMT Fuses Protection of measuring voltage transformers Back-up with ULA Protection from I3 up to I1
15 Transformer Protection
16 Distributions network HV- Switch-Fuse combination Trafo 110/20kV Transmission line 20kV Trafo 20/0,4kV NH - Fuse disconnector HV fuse for Transformer protection LV gtr / gg fuse protection
17 Transformer protection The following should be observed for HV Fuse-Link selection: a) Transformer ratings Service voltage (U) = 20 kv Rated output (S) = 400kVA Relative short-circuit voltage uk % = 6% Inrush current ( IN) HV- Switch-Fuse combination Trafo 20/0,4kV 400kVA u k =6% U=20kV NH - Fuse disconnector b) Time-current characteristic of HV Fuse-Links c) Secondary devices/selectivity HV fuse for Transformer protection LV gtr / gg fuse protection
18 Transformer protection according to IEC TR Rated output (kva): 400 Relative short circuit voltage uk (%): 6 Rated current of transformator on 20kV (A): 11,5 Rated current of transformer on 0,4kV (A): The min. short-circuit current on secondary terminal is given from the relative short-circuit voltage. The ransformer must be designed to withstand this current for time =2 seconds. Ik=100xIn/uk= 100x11,5/6 = 2. Inrush current calculation time t=0,1s Inrush 0,1s = 12xIn = 12x11,5 = This inrush current must not melt the fuse-link. 192 A 138 A Strictly convidential
19
20 A, 24kV GP t I (A) 0, , , A, 24kV GP t I (A) 0, , , , A ULA A ULA 31,5A ULA 10 GP10A T (s) GP16A 1 End poits Ik (A)
21 Transformer protection according to IEC HV-Switch-Fuse combination HV- Switch- Fuse combination HV fuse for Transformer protection Trafo 20/0,4kV 400kVA u k =6% U=20kV
22 Transformer protection according to IEC HV-Switch-Fuse combination T 0 air = 0,65ms T 0 SF6 =0,35 ms Short circuit / 2s A ULA A ULA 31,5A ULA 10 GP10A T (s) GP16A 1 End poits T air T SF Ik (A)
23 Transformer protection according to IEC HV-Switch-Fuse combination Passed fuses A ULA 10 GP10A T (s) 1 End poits T 0 air 0.1 T SF Ik (A)
24 LV Fuses for Transformer protection Trafo 20/0,4kV 400kVA u k =6% U=20kV NH - Fuse disconnector LV gtr / gg fuse protection Strictly convidential
25 LV Fuses for Transformer protection Trafo 20/0,4kV 400kVA u k =6% U=20kV NH - Fuse disconnector LV gtr / gg fuse protection EFENSlovakia - Solutions Integrated - 10/2017 Strictly convidential
26 LV Fuses for Transformer protection gtr Fuse gg Fuse Strictly convidential
27 LV Fuses for Transformer protection gtr Fuse - developed and standardized in Germany - fuses are aligned to the thermal capacity of the transformers - allow maximum loading of distribution transformers having a secondary voltage of 400 V - able to carry a current of 1,3 times the rated current over a period of 10 hours - will operate within two hours at a current of 1,5 times the rated current - gtr fuses are specified in VDE , rated voltage of 400 V and a rated breaking capacity of 100 ka Strictly convidential
28 LV Fuses for Transformer protection gg Fuse - Standard Fuses - 400V or 500V - Breaking capacity up to 120kA - slower than gtr Strictly convidential
29 Characteristics of LV-fuses inputted in to 20kv T (s) gtr 400kVA 100 End poits 500A gg/400vac A gg 1 1,5xIn Ik (A) ,3xIn
30 10000 Discrimination HV and LV fuses A ULA 10 25A ULA 31,5A ULA GP10A GP16A 1 gtr 400kVA End poits 500A gg/400vac A gg 1,3xIn 1,5xIn
31 Discrimination HV / LV gtr 400kVA A ULA 10 25A ULA 31,5A ULA GP16A 1 gtr 400kVA End poits 500A gg/400vac A gg 1,3xIn 1,5xIn
32 10000 Discrimination HV / LV gg 500A A ULA 10 25A ULA 31,5A ULA 1 GP16A End poits 500A gg/400vac 0.1 1,3xIn 1,5xIn
33 10000 Discrimination HV / LV gg 630A A ULA 10 25A ULA 31,5A ULA 1 GP16A End poits 630A gg 0.1 1,3xIn 1,5xIn
34 Transformer protection with MCCB/ACB HV- Switch-Fuse combination Trafo 20/0,4kV 400kVA u k =6% U=20kV MCCB (ACB) HV fuse for Transformer protection LV MCCB / ACB
35 10000 Discrimination HV/LV MCCB A ULA 25A ULA 31,5A ULA GP16A gtr 400kVA End poits 1,3xIn 1,5xIn MCCB
36 10000 Discrimination HV/LV MCCB MCCB IS NOT SELECTIVE TO HV-FUSES 20A ULA 25A ULA 31,5A ULA GP16A End poits ,3xIn 1,5xIn MCCB
37 Fuse disconnectors + gtr Fuses Advantages Circuit breakers MCCB/ACB Advantages SAFE OPERATING REMOTE OPERATING SMALL DIMENSIONS EASY TO TURN ON/OFF 1-POLE OPERATING 3-POLE OPERATING 1-POLE PROTECTION 3-POLE PROTECTION EFEN - Solutions Integrated Marketing 2/2016 Strictly convidential
38 EFEN - Solutions Integrated Marketing 2/2016 Transformer protection with fuses Strictly convidential FULL SELECTIVE NIGH BREAKING CAPACITY 100kA LIMITING OF SHORT CURRENT LOW POWER DISSIPATIONS EASY MOUNTING DIRECT BUSSBAR MOUNTING VISIBLE, SAFE DISCONNCTION LONG LIFE UP TO SIZE 4A 1000kVA INEXPENSIVE UP TO 630kVA Fuse disconnectors + gtr Fuses Advantages Circuit breakers MCCB/ACB Advantages
39 Thank you for your attention! Strictly convidential EFEN - Solutions Integrated
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