how to reduce earth leakage current

Found inside – Page 17leakage current decreases very rapidly with increase in leakage resistance . ... in leakage resistance has a greater effect in reducing leakage currents ... Found inside – Page 219There are some simple techniques, which can be used to reduce ... Earth leakage current will be high, so a fixed earth connection must be provided. Found inside – Page 30A more sensitive rating would not reduce the shock current although it might ... these to trip in 40 milliseconds or less with a leakage current of 250 mA ... Found inside – Page 250Current-operated earth leakage circuit breakers (COELCB) These safety ... (e.g. 30 mA) for a very short period of time reducing the risk of electrocution. Found inside – Page 245It should have : * Maximum leakage current of < 50 microamp , even with a single ... and the casing causes a large current to flow to earth - a fuse melts . Found inside – Page 94151 Leakage currents These are caused as a result of : i ) Frayed or aged ... power socket if the earth terminal is not properly connected to the main earth ... Found inside – Page 1780.192 A A Ground Connection Relative Leakage Current at • 0048 Relative Loukage Currento's sta 0.012 FIG . ... bonding , usually affords the most feasible means for reducing track voltage drop and thereby reducing stray currents thru earth ... Found inside – Page 178Relative Leakage Curreni od Relative Leakage Current sta 0.192 A A fround Connection Relative Leakage Current at să - 0.048 Relative ... The total stray current thru earth in the right - hand diagram will be only one - fourth that of the left - hand diagram , so that at any one ... The actual reduction is very much greater , because the track . feeder connection points can be chosen so as to be located where ... Found inside – Page 203Leakage currents may be sufficient to produce microshock. Earth conductors are connected to each other to reduce differences between them. Found inside – Page 467In order to limit the ground leakage current (which deteriorates the power quality ... lead to higher ground leakage current with respect to the ideal case. Found inside – Page 178Relative Leakage Curreni od Reiative Leakage Currentesto -0.192 Cound Carnechon Relative Leakage Current of st 0.048 Relative Leukage Current sta -0.012 FIG . 4. ... The total stray current thru earth in the right - hand diagram will be only one - fourth that of the left - hand diagram , so ... The actual reduction is very much greater , because the track . feeder connection points can be chosen so as to be ... Found inside – Page 217... prevent the risk of electrically ignited fires, correctly selected RCD protection can reduce electrical fires caused by earth leakage current ignition. Found inside – Page 130In that case the lower limit of 0.25 mA for enclosure leakage currents should ... into contact with the patient) across the patient to earth (Figure 8-22). Found inside – Page 532... is to prevent electric shock and fire due to earth leakage current. External metallic body of electrical machines and appliances are connected to earth. Found inside – Page 787By reducing the current strength with some metals , connection that the trouble begins , though not necessarily such as ... causes the small the paths for the leakage currents to and through earth ? wire to have the dangerous heating current ... Found inside – Page 198They also show that V2 / F is a superior limit to the power expended in earth currents . For instance , if V = 220 volts , and F = 25 ohms , the power expended in leakage currents cannot be greater than 220p / 25 , that is , 1 . 936 kilowatts , and ... Found inside – Page 324Although these topologies reduce the drawbacks of transformer-based systems, they introduce an earth leakage current problem. The source of this problem is ... Found inside – Page 814The tissues or organs the current passes through Currents passing through ... r Reduced interference r Reduce leakage currents Earth connections reduce ... Found inside – Page 447The scheme by its nature introduces ground loops between the safety grounds ... This can be achieved by reducing leakage currents from the circuit and by ... Found inside – Page 92There will be a flow of current through the person, via earth. ... There is a maximum allowed limit for Earth Leakage Current of 5 mA in normal conditions ... Found inside – Page 303This screen is earthed and helps both by conducting leakage currents to earth and by considerably reducing the capacitance between the two windings. Found inside – Page 2-4l Short-circuit; l Over-currents up to locked rotor condition; ... load control with the addition of earth leakage current protection in order to reduce any ... Found inside – Page 203Current thus cannot reach earth through the patient if contact with a live ... reduction of stray leakage currents, e.g. due to drops in potential along the ... Found insideTo reduce the hazard of leakage current, modern wiring systems incorporate a separate earth ground wire in the outlets and power cords, sometimes called the ... Found inside – Page 178Relative Leakage Curreni ol Relative Leakage Current sta0.192 A fround Connection Relative Leakage Current at sta ... usually affords the most feasible means for reducing track voltage drop and thereby reducing stray currents thru earth in ... Found inside – Page 718The leakage current is plotted by means of polar coordinates ; the dash circle ... It is not possible to reduce earth - current measurements to rates of ... Found inside – Page 33To meet the leakage current requirements for patient safety, the electronic ... respect to the earth, which may also reduce the efficacy of cable shielding. Found inside – Page 5224.2 Discussion – Leakage Current An element that reduces the efficiency of a ... have been used to minimize the ground leakage current through the parasitic ... Found inside – Page 101Indium was also doped to reduce the low leakage current and tailor high ... a given concentration of the rare earth element yttrium, the leakage currents of ... Found inside – Page 6In these patients the maximal allowed leakage current is 10 to 20 mA. ... (B): Several factors can reduce the risk of electrical shock in neurophysiologic ... Found inside – Page 56Residual Current Circuit Breaker with Overload Protection ( RCBO ) An RCBO ... of earth leakage , overload and short - circuit currents , while reducing the ... Found inside – Page 6363... with the purpose of reducing radiofrequency disturbances leads, under ordinary operation, to the generation of leakage currents flowing towards earth. Found inside – Page 203Leakage currents may be sufficient to produce microshock. Earth conductors are connected to each other to reduce differences between them. Found inside – Page 125(14) Reduce the leakage current by increasing the resistance between the source and earth, by rail bonding and rail-to-negative ties, by increasing the ... Found inside – Page 540... approximately halved the earth - leakage current . limited , and different supply sockets for highThe fifth measurement ... practice . transformers to a symmetrical isolation transformer may reduce the leakage current below ( d ) Thus , the use ... Found inside – Page 814Such currents can either pass or ' leak ' down to earth through a designed ... but low enough to allow a leakage current to earth to prevent the wearer and ... Found inside – Page 292Instructions for proper handling of the equipment to prevent shack hazard ... Leakage current Y Leakage current (Earth leakage and touch current) test ... Found inside – Page 1418Both solutes reduce the size of the anomaly and the temperature at which it occurs . ... It is shown that leakage currents are due to thermionic emission ... Found inside – Page 21In addition to the leakage currents available from equipment-to-patient ground connections, leakage currents may be introduced by similar mechanisms into ... Found inside – Page 30Minimisation of earth leakage current for underground coal mines power supply system is of great advantage in reducing hazards such as electrical shock from ... Found inside – Page 118Vcc 1M surge suppression , integral supplies , device - temperature sensing , and dc - bus voltage and current feedback . ... Fuji's direct - bonded - copper substrates employ ceramic insulation to reduce earth - leakage current pling . amplitude ... Found inside – Page 158As mentioned above, the AC ground of the converter is often connected to the earth ... Although these methods can reduce leakage currents to some extent, ... Found inside – Page xiv... to reduce the maximum potential rise when the surge current enters it. ... Simple protection system based on the direction of the earth leakage current. Found inside – Page 368earth 368 earth wave or by hand , or which can be loosened and removed with a ... An apparatus used to prevent or reduce current leakage to the ground when ... Found inside – Page 458Should the apparatus develop a fault, the earth leakage current is sensed ... at such low earth leakage currents, that they greatly reduce the possibility ... Found inside – Page 101When a dangerous leakage current is recognized, the inverter is immediately disconnected from ... ground leakage current is the reduction of the excitation, ... Found inside – Page 452Should the apparatus develop a fault, the earth leakage current is sensed ... such low earth leakage currents, that they greatly reduce the possibility ... Found inside – Page 445... from earth ground using an isolation transformer to minimize leakage currents that ... This isolation can help reduce some line noise, but noise at the ... Found inside – Page 17leakage current decreases very rapidly with increase in leakage resistance . ... in leakage resistance has a greater effect in reducing leakage currents if ... Found inside – Page 143earth current, a light electric current apparently traversing the earths surface ... It is used to find and prevent or reduce current leakage to the ground ... Heating current... found inside – Page 447The scheme by its nature ground... Direction of the equipment to prevent shack hazard are connected to each other to differences. Found inside – Page 324Although these topologies reduce the drawbacks of transformer-based,! 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