At bottom of meter facia 200/5A is mention. potential difference across the resistance R2 = I*R2 Now look at the Figure B, the secondary of the transformer is earthed in this case. the old energy meter had a MF =100 Three-phase systems can be found as both 3 phase 4 wire and 3 phase 3 wire configurations. CT . Experts have the accurate knowledge and the right tools to perform the installation safely, without any safety risk involved. Explain with examples for easy understanding. The neutral wire serves as common return to all the three phases acting outward from N1. Your doubt is not clear to me. 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Under such conditions, there will be heavy voltage drop across the sub-station earth due to fault current which may give quite severe electric shock. Acuvim II series meters offer the flexibility to work in single-phase and three-phase applications and can take the input voltage of 3 phase 4 wire and 3 phase delta systems up to 690Vac L-L directly without any additional . pls help, I cant understand what is n?? If insulation between HT and LT windings fails due to any reason, 11 kV supply voltage will appear at 230 V terminals of the transformer. Please help me. my self have one DG (eg 500kva or 250 kva ) i want select the coil, how to select the ct coil if have any formula plse share me. If installed, then pls check in the meter console for voltage. my question is, we have connected CT of 100/5 with 3 phase 4 wire static meter of -/5 A. From Google search: To calculate 3 phase kWh from measuring amps on each phase Use this formula; KW= (volts (avg) x amps (avg) x power. This is a big mistake by EB. Required fields are marked *. If so, dive in and explore all the details! Hence the earthing of the neutral wire of a distribution transformer at the sub-station is very necessary form the safety point of view. = 2.67*50 = 133 V Illustration: The effect of disconnecting neutral wire in a 3 phase 4 -wire system can be explained more clearly by the following illustration: Suppose a resistance of 100 is connected between R phase and neutral and a resistance of 50 is connected between Y phase and neutral in a 3 phase, 4 wire supply as shown in Figure (a). Connect the wattmeters as shown in Figure 12. Installation of Three Phase kWh Meter (3-Phase, 4 Wires, 400V AC Energy Meter) First of all, make sure to disconnect the main power before working on electrical installations. MADE TO I.S.S. Hi. HOW TO POSSIBLE ? The 3-phase energy meter is suitable for commercial and industrial applications. It can also provide active, reactive, and apparent energy calculations as well as power quality measurements, voltage rms, and current rms. It provides real-time and recorded power consumption data for better 3-phase motor amps calculation. The data in this manual is checked regularly and the necessary corrections will be included in subsequent editions. The voltage terminals of the wattmeters are connected phase to phase. Good CT Our companys Three-phase Electricity Meters Ct have high precision,wide range,small volume and good linearity that can be used to the field of electronic watt-hour meter, electric energy metering, electronic detection. Kindly clarify the correctness However we have connected one external CT of 300/5 in meter connection. This meter is very popular in worldwide for its novel appearance, good quality and reasonable price. The 1st phase wire, when taking electricity from the meter to the switchboard, uses the 2nd slot. $32.12. The 2nd one is connected to the 3rd slot, and the 3rd one is connected to the 5th slot. For example, take a 400 V (V LL) three phase system with the following loads: phase 1 = 80 A, phase 2 = 70 A, phase 3 = 82 A. the line to neutral (phase) voltage V LN = 400/3 = 230 V Total three phase power = 18.4 + 16.1 + 18.86 = 53.36 kVA. What right 10.8,6000,60? People must carefully install the 3-phase meter system to avoid accidents. Please clarify the concept of meter CT and PT ratio -/1A and -/110V in calculation of M.F. The potential of the neutral point can be very well understood from the following Figure. Therefore the method for calculation of multiplication factor will remain same. From the above calculation, how do you get 220 for External PT Ratio. Please help me in entering PT values in programmable energy meter. The function of neutral wire in 3 phase 4 wire system is to serve as a return wire for general domestic supply system. Thanks. After removing the packaging make sure the integrity of the unit. 10 Days Returnable. why it is not considered? Thanks for reading about neutral wire function in 3 phase 4 wire system.. www.yourelectricalguide.com/ neutral wire function in 3 phase system 4 wire system. Sir can you explain in detail calculation of MF with mf will be???? CTR= 500/1 AMP if the input is 440/240 volt there is no need of PT ratio, your MF will be 50, Hi About how if, imperii Digital Energy Meter Instruction Manual Digital Energy Meter Instructions WARNING! Good Current Transformer Iron Core Nano-crystalline current tansformer iron cores have high permeability and low cost which is ideal material for current transformer at present.It is suitable for the development trend of small, light and efficient components in the field of power electronics and electronic CT Using PC Flame Retardant Plastic Shell, High Quality Magnetic Health Ring With Epoxy Coating, Iron-Based Magnetic Core With Nanocrystalline Ribbon. the metter shows 1.2 kWh 220/240 volts for small appliances is obtainable between any phase or line and the neutral as shown on the diagram below. A 3 phase energy meter is a 3 phase 4 wire direct connected meter that is used to estimate the electricity on the 3 phase power supply, mostly for residential & commercial use. meter ct ratio 400/1,meter pt ratio /110v Please I have a question, 3 slots are used to patch the 3 phase wires bringing electricity from the grid to the energy meter. Im k. Purushothaman Subject to technical modifications without notice. why it is not considered? current through loads, I = VL/(R1 + R2) If you still find problem, please reply. Three are phase wires and the 4th is a neutral wire. Meter displayed 112 kwh. Get it as soon as Wednesday, Dec 14. In this country, the secondary windings of a three-phase star-connected transformer usually have a line voltage output of 415 V and so the voltage between any line and the neutral conductor is 240 V. The 1st phase wire supplying current from the meter to the switchboard is connected to the 2nd slot. 363.5/110 v and 3x 5 (10 A), and External You can use different phases for different rooms. Meter PT ratio= 11KV/110v. Return Reason Return Period Return Policy ; All return reasons : 10 days from delivery : Full Refund : The MF will be 240,000. On the basis of MUs, total revenue generated by the Station is calculated. no. LINE VOLTS : I.L.0.66/3.0KV. meter ct ratio is 400/1A, meter pt ratio is 33000/110v and external ct ratio is 300/1A and external pt is 11000/110v so what is mf sir. For detailed calculation, you are requested to refer the article. What is the CT and PT ratio for Substation Meter and feeder meter? Let this difference in meter reading is n Wh for the given period. sir i ve 3 phase 4 wire HT energy meter model CE 62-01 by creative group lahor, on meter written. But, if your house is bigger and you use many air conditioners, you might need a 3-phase meter to facilitate the 3-phase motor amps calculation. Only 7 left in stock - order soon. Let us take an example. Inside battery to support power off display. the external CT ratio is 50/1A, external PT ratio is 33kV/110V The 3 phase 4 wire system allows a selection of 2 voltages and allows small loads to be connected to a lower voltage while large loads can be connected to a higher voltage. Current and voltage input is extended through metering core of, Let us take an example. Thank you for asking. 3 more slots are used to patch the incoming phase wires to supply the electricity from the three-phase meter to the switchboard. High performance CT Power frequency insulation strengthThe insulation between the primary winding and the DC Immune Current Transformer for Smart Meter. We have one 3 phase 4wire energy meter installed in our distribution network. The external CT ratio is 200/1A, external PT ratio is 132kV/110V and Under faulty conditions, for instance the fuse or the circuit breaker protecting the feeder does not trip in the case of earth fault on one of the lines, the neutral may attain a much higher potential with respect to the earth. Why it is not considered in the MF calculation? So, the current and voltage input to meter will be 1 A (phase to neutral current) and 110 V (phase to phase). Three Phase Four Wire Energy Meter User Manual Download [optimized]Three Phase Four Wire Energy Meter User Manual Download, Three-Way Meter Soil Tester Product Specifications pH Range: 3.5-8 Ph (3.5-6.5 ACID, 7 NORMAL, 7-8 ALKALI) Moisture Range:, Aeotec Home Energy Meter G2 1 phase.You hear a lot about energy use these days. I have 3 phase 4 wire ct energy meter . PT primary/Secondary = 33000/110 & CT primary/Secondary = 75/5 . Similarly, The power is then distributed to various sub-stations located at various places and localities. HPL 3 Phase 4 Wire Electrical Energy KWH Meter (White, Pack of 13) Brand: HPL 10 Days Returnable Currently unavailable. 400 volts for bulk consumers and 230 volts for general domestic consumers. how do u find the multiplying factor. The 1st phase wire bringing electricity from the grid to the meter is connected to the 1st slot. Please check the formula for multiplication factor. For a load lower than this, a single-phase energy meter is sufficient and much more economically viable. so my MF is ( 6000 * 300)/(5* 100) =3600 ? (RATIO : 2000/5A VA : 15 CLASS : 1.0 Afterward, the 1st phase wire coming from the grid is connected to the 1st slot in the energy meter. While counting m.f. We are using MF as 200 This discrepancy in the actual power and power displayed in energy meter is due to the fact that meter is taking CT and PT secondary value as input for its calculation. After reading this article you will be able to understand some very amazing facts about need of neutral wire in three phase four wire distribution system. For instance, a 100 kVA transformer can satisfactorily take 33.3 kVA single phase load on each of its phases. Indications considering values of programmed ratios. If the 11 kV voltage appears at secondary terminals then excessive current will flow through the path shown in the Figure and fuse will blow. The potential difference across each load is changed according to the rating of the load. we have externally connected only CT having ratio 300/5. is this right?? The distribution is generally single phase two wire and three phase four wire. And summation meter se pehle install 4 abt meter having CT ratio 600/1. The added value of two single energy meters gives the value of 3 phase motor amps calculation. Then, how to calculate MF of summation meter?? 11000/110 volt and Value on Energy Meter are -/110/1.732/-/5 Amp, 50Hz , then what is the Multiplication factor.kindly suggest me. The impedance of three conductors will be the same and unequal current flowing through them will give rise to unequal voltage drops with the possibility of the voltages at the loads being unbalanced. It is imperative to observe the generally applicable safety measures.In case of failure and /or malfunctioning of the device, turn off it. Please told me how to read unit in meter and what is multiple factor. Make- Capital,AC 3 Ph 4WIRE for unbalanced load NO PT only 3 phase supply 415 V is connected. potential difference across the resistance R1 = I*R1 It is a simple three phase four module Din-Rail meter with transparent meter case, which is widely used in Sub-metering system. carrying capacity value for the wire on single coved. if the Bay c.t. Sir, your anser is not match in formula 11kv /110 v*300 /5/110 v*5=10.8 The purpose of earthing of neutral is shown in Figure. The manufactory will repair or exchange the products while the lead seal is still exited, within 18 months, when discovering the products not accordance with the technical specification. Thank you! what will be the meter overall MF. The consent submitted will only be used for data processing originating from this website. HT METERING PANEL. The data can, later on, be used for analysis. e. what is the formula of multiplication factor for meter reading . To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Thank you Aurel for asking. The three-phase, 4-wire system is basically three separate supplies with only a common neutral. If the neutral wire is disconnected, the two loads R1 and R2 are get connected in series and the potential difference across them becomes equal to the line voltage i.e. What is make and model of your energy meter? As already mentioned, if the load needed at your home is higher than 7 KW, you will need a 3-phase energy meter. Anyang Kayo Amorphous Technology Co.,Ltd. Aoa dear all please tell me how to calculate multiplying factor for 400v LT energy meter 62.36 Phase to Neutral 220V, No PT is connected. Distribution of electrical energy to consumers in a town or village is carried out by the three-phase, four-wire system. Ct meter 5 A 4d060163 rev d. f technical specifications enclosure engineering plastic complying to ip-51 dimension 96 x 96x105 mm (hxwxd)panel cutout: 92 x 92 mm connection 3p 4w display lcd with backlit type multi function meter measurements kwh / kw / All rights reserved .  Privacy Policy, 3 Phase 4 Wire Energy Meter Calculation and services are very good, our leader is very satisfied with this procurement, it is better than we expected,, The package received today.Fast delivery and 3 Phase 4 Wire Energy Meter Calculation got good quality.The sellerss service in appreciated., 3 Phase 4 Wire Energy Meter Calculation quality exceeds expectations. I have a 3 phase 415V kwhr meter where CT ratio is shown 100/5a and on kwhr meter , it mentioned 400/5a , what will be the multiplying factor ? Connecting meter in LT side having phase to phase voltage 440V and phase to neutral 220V. Any cable with specification 5 x 50 sqmm included ground (green color) inside ? A The 3rd phase wire, when taking electricity from the meter to the switchboard, uses the 6th slot. pls help, we have connected external CT Ratio 400/5 and external PT Ratio 11000/110 then meter CT ratio 400/5 and meter PT Ratio 11000/110 what will be the MF. The voltage between any phase wire and neutral is 230 volts and between any two phase wire is 400 volts. The difference in load will cause an out of balance current to flow through neutral wire. I have a 3 phase 4wire, 110v energy meter where CT ratio is 300/1A and the meter is installed on an 11KV panel. Can you please elaborate. How the actual KWH will be calculated. Need MF and Total kwh. A 3-phase supply to a home would normally be required only for large electrical loads. My pervious reading was 590 The more amps we have, the more power we have in a three-phase circuit. Inspection done by EB and they said , henceforth major changes in power cost. This makes clear that if the supply system is reverted to three phase three wire system the neutral conductor can be removed without any change in potential distribution of the network. In this case, there is no question of voltage drop along neutral and the potential of N2 is same as that of N1. What is the meaning of meter CT ratio-/5A and meter PT Ratio -/110V? Can you give some suggestion to how to tackle A 3-phase energy meter can interface with different services like 3-phase 4-wire, 3-phase 3-wire, and 3-phase 4-wire with 2 elements. We and our partners use cookies to Store and/or access information on a device.We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development.An example of data being processed may be a unique identifier stored in a cookie. Thus the difference of meter reading must be multiplied by the above Multiplication Factor to get the actual amount of energy imported / exported for our example. Actual power = 1.732x220x200x1 kW (Three phase power), Actual energy for 1 hour in watt hour = 76208 kWh. Features and Technical Parameters Features LCD backlight display; Inside battery to support power off display. ENERGY METER INBUILT 100/5 CT , FIELD CT AT ACTUAL INSTALLED ON LINE IS 200/5, THEN IN WHAT M.F WE HAVE TO CALCULATE THE KWH.. 11kv feeder mai CT 33 kv ka 300/5A connect hai, aur meter ka ratio11kv/3/110v, 100/5A.iska MF kya hoga with calculate karke. Then the answer would be 360. regarding my post of some minuits ago The outgoing neutral is connected to the 8th slot. CT Ratio : 10/5A and PT ration : 22KV/110V, as per your calculation, the MF is (10*22)/(5*110) = 0.4, but in the meter the MF is shown as 4. It will be great if you can mention the meter make and model number so that i can check. My energy meter is contains only CT coil no pt coil ratting is 500/1A voltage is Given 400v directly ,so what Mf Means that failure to observe the instruction can result in death, serious injury or considerable material damage. Supposing my CT ratio is same but the PT ratio differs. Per phase power calculated by the Energy Meter assuming power factor to be unity, Hence, total power as displayed in Meter = 3xPer Pahse Power, Energy Meter displays the cumulative energy imported / exported in Wh. What is the multification factor. To overcome this discrepancy, we need to have a Multiplication Factor of Energy Meter. Under balanced conditions the vector sum is zero and therefore, the neutral current is zero. i need your opinion There are a total of 8 slots in a three-phase energy meter. In CT panel, the connection which is going to meter, phase and neutral got interchanged. Type-RR47 How to check Meter reading of three phase digital meter, All parameters kWh, kVAh, power factor etc. Find 3 Phase 4 Wire Energy Meter Calculation Manufacturers & Suppliers from China. In Power Generating Stations, the cumulative reading of such energy meters are used for the calculation of total Million Units (MUs) of energy exported. and min. You can download Multiplication Factor Calculator for Energy Meters for calculation. The neutral is paired to each of the single phase load. VOLTAGE READING. V (Volts): Electrical potential, measured in volts. Features. Help will be highly appreciated. Hallo. thanx In this way, even if one phase fails, you will still have the power supply on for the other rooms that are connected to 2 functional phases. The 2nd wire to the 4th slot, and the 3rd wire to the 6th slot. Your email address will not be published. what effect will it have on the reading? If the ctr of Meter is -/5A & ptr is 110v & ctr of mu is 200/5 & ptr is 11kv then what is MF of the consumer? In this article I am discussing the function of neutral wire 3 in phase 4 wire system. Multiplication Factor of Energy Meter is calculated as below, Multiplication Factor = (External CT Ratio x External PT Ratio) / (Meter CT Ratio x Meter PT Ratio). PTR =33/110V I am installing 440v 3phase 4 wire meter my mf ratio??? Can you pls send me detail for your 66 kV substation so that I may check why the MF is 60 in that case? Therefore, hello friends. Thank you for asking. Therefore, the total neutral current is the vector sum of the three line currents. What should be the multiplying factor? Three Phase Three-Wire Connection (Two Wattmeter Method) Where three wires are present, two wattmeters are required to measure total power. external ct ratio 200/1,external pt ratio 66kv/110 MF=1500 33/110 SUB STATION Home Energy Meter G2 1 phase user manual. A 3 phase meter helps consumers & utilities in revenue protection. It is applied to protect valuable equipment pieces from high voltage damages. Why? Please share the post if you like it. Meter CT ratio= -/1A There are typically two types of 3-phase meters. EB said they only did mistake while giving connection in few years back. Pt not available. PT is 33000/110V neutral wire of a distribution transformer. MY external CT PT ratio is 50/5,11KV/110 v and meter CT ratio is /5A AND PT RATIO IS 11 KV/110V .WHAT WILL BE MULTIPLYING FACTOR, We have selec EM306A ENERGY METER 3 PAHASE CT RATIO IS 300/5 How can I identify PT Ratio in selec MFM376 Meter.. Im using this meter in control panel. 6400 imp/kwh Brand: Tl. Suppose the energy meter is connected in STAR connected system having CT ratio of 200/1 A & PT ratio of 220 kV / 110 V (phase to phase value). Yes, you need to multiply the energy meter reading by 3600 (for kWh or Unit conversion) for getting the actual energy consumption by auxiliaries. The equipment (device, module) may only be used for the application cases specified in the catalog and the user manual and only in connection with devices and components recommended and approved by Zhejinag Xintuo New Energy Co.,Ltd. Also, summation meter ke current transformer ka CT ratio 50/1 hai. so the real value is 2.2 * 3600? A 3 phase electric meter is essential for calculating the 3-phase motor amps calculation by heavy electrical appliances. 3-phase supplies are common in industrial areas and shopping centers. Moving on, its very simple to understand the basics of wiring a 3-phase energy meter. It provides data storage and communication facilities as well. Your anser is 6000 It will also help you understand the 3-phase motor amps calculation. Where supply is to be given to a large establishment like hotels, offices, hospitals the system of three phase four wire supply is adopted. Then the actual energy imported / exported during that period. This manual does not contain all of the safety measures for operation of this equipment (module, device) because special operating conditions, local code requirements or local regulations may necessitate further measures. what about the Meter CT and PT ratio. If CMD changes CT coils are also to be changed , is it so. Definitely not. Please reply with details. To determine the CTs that . This is why, main transmission network is three wire system. Can I use a P.T of 33000/110 volts to connect the meter ? How to calculate ct ratio. RMD registered maximum demand in KVA. The temperature for the data listed in the above table is 35,C the safe. It may be that you are using MF to convert into into million Units. PT RATIO 11KV/3/110V/3 we respect your privacy and take protecting it seriously, Therefore, an Energy Meter shall take current and voltage as an input. It will be 20,000 assuming meter PT ratio to be-/110V. CT RATIO is 250/5. However to attain absolutely equal distribution in such cases is not possible and as a result a small current in the neutral may exist. I have a meter type MK6E with nominal current In= 1(10) Amps & Vn = 3*57-240 volt but the external CT = 100/5 & external PT = 20000/100 please can you tell me how much is the multiplication factor ? thanks. See, (11x1000x300) / (5110) = 6000. This meter is very popular in worldwide for its novel appearance, good quality and reasonable price. Professional 3 Phase 4 Wire Energy Meter Calculation manufacturer. If you can't find the product you're looking for, please contact us for more information. This metering method is suitable for industrial and high residential settings as it offers accurate 3-phase motor amps calculation. That should be 6000. To conclude, as an energy meter shows the cumulative energy imported / exported in Watt Hour, therefore the difference of meter reading taken at two different point of time gives the net energy imported / exported. However, it does contain information which must be adhered to for your own personal safety and to avoid damage to the equipment. I have Schneider conzerv 6400NG energy meter. We are Professional Manufacturer of 3 Phase 4 Wire Energy Meter Calculation company, Factory & Exporters specialize in 3 Phase 4 Wire Energy Meter Calculation wiht High-Quality. If you don't have a power factor use 0.9. This calculation or summation of calculations shall be used in sizing the transformer. let as assume CT ratio is 200/1 external and meter side but PT ratio for external is 220/100 and at meter side 220/110. This item: 3 Phase 4 Wire Energy Meter 230/400V 5-100A Digital Electric Power Meter Energy Consumption KWh Meter Rail Type Installation 35mm. Therefore, The power from generating stations is transmitted over long distances through transmission lines to various receiving stations. While calculating m.f. FREQ : 50 Hz It is recommended to use this energy meter only when your load requirement is more than 5 KW to 7 KW. Reporting enabled. The MF to convert meter reading in kWh (Unit) = 15. On Energy meter facia MF-20 is written at bottom of meter 200/5A is written. How to calculate input voltage. Please calculation me. The secondary of this transformer is not earthed in this case. Means hazard of electric shock and failure to take the necessary safety precautions will result in death, serious injury or considerable material damage. Hello guys I can ask something 240*3 volt ,Class-1, My CT ratio is 600/5 and phase voltage is 400v. KAYO could offer a solution immediately when I had problems. In Figure A, an 11 kV / 230 V transformer is fed from 11 kV line is shown. When talking about a Three phase energy meter in general, it uses 4 wires to supply electricity 3 out of the 4 are phase wires, and the 4th one is the neutral wire. The safest way to install a 3-phase energy meter is to let experts install it. Let us calculate the Multiplication Factor for our example. PT. It is clear from the above illustration that if the neutral wire is disconnected in a 3 phase, 4 wire system the potential difference across the high resistive load is increased and the potential difference across the low resistive load is decreased. tm nova 3 phase 4 wire multi function meter user manual l&t electrical & automation doc. so should i multiply this value with 3.6? i habe recently installed a 6kV switchgear, having doubts for the energy measyrement. Energy Meters are one of the important instrument to account for energy imported / exported in an industry. Lets begin with the basics. To better understand things, lets put it this way: Once this writing is understood, its easy to understand the basics of 3-phase motor amps calculation as well. Hi You can download Multiplication Factor Calculator for Energy Meters for calculation. We don't know when or if this item will be back in stock. Remember, when a three-phase meter is being connected, the wires have to be patched in a certain way: If the first wire bringing the load is being connected to the 1st slot in the meter, the second slot will be used to connect that wire to the switchboard. A METER OF It is generally preferred for metering and ascertaining the power efficiency in factories, automation plants, solar power plants, data centres, and many other industries. Your email address will not be published. One meter will only have one CT and one PT input. The simplified diagram is shown in Figure (b). Therefore, the neutral wire is very essential in this case. Would you like to know more about a 3-phase meter and whether or not you need it? a did a mistake in calculation. so the MF should be (6 300 ) / ( 5 100) = 3.6 ? Those the CT rating has a part to play in this? The connections of the windings of the transformers installed in the sub-station are in delta on the primary side and in star on the secondary side. Very little voltage between neutral and earth may exist as the neutral is solidly connected to earth at the sub-station and it may rise if earthing of sub-station is not working properly. Current and voltage input is extended through metering core of Current Transformer (CT) and metering core of Potential Transformer (PT). PT ratio is 132 kV/110V for your case. The balancing provides most effective utilization of the generator and the transformer. The voltage is ultimately stepped down to 400/230 volts i.e. The issues now is this, the reading from the inter-boundary meter is higher than that the meter at the transmission end is picking. Yes u r right Mr. Aurel made the calculation with 6. There is no CT connected inside meter box. Does it pique your interest? High light on it please. It offers efficient and accurate 3-phase motor amps calculation in areas with a heavy electric load. When the neutral wire in a 3 phase, 4 wire system is disconnected, the loads which are connected between any two line conductors and the neutral are get connected in series and the potential difference across the combined load becomes equal to the line voltage. When talking about a Three phase energy meter in general, it uses 4 wires to supply electricity - 3 out of the 4 are phase wires, and the 4th one is the neutral wire. External PT ratio= 11kv/110v Based on this input, the energy meter calculates and display amount of energy imported / exported. Also make sure you use the larger voltage of the system voltages, ex) if it's 480/277 use 480 in the formula.Jun 12, 2013. But is better to refer the manufacturers manual. Comment * document.getElementById("comment").setAttribute("id","a9e4e93c9280ef9900afea745a724782");document.getElementById("afe6277d1c").setAttribute("id","comment"); Save my name, email, and website in this browser for the next time I comment. If not correct, please show detail calculation. Your email address will not be published. It will be a very dangerous situation for both equipment connected to that line and the operator. Gcontracted Maximum Demand in KVA agreed mutually by user n supplier. A 3 phase meter is mostly used in two configurations star and delta. Phase Voltage = 110/1.732 = 63.5 V Phase Current = 1 A Per phase power calculated by the Energy Meter assuming power factor to be unity = 63.5 x 1 x 1 Watt = 63.5 Watt Hence, total power as displayed in Meter = 3xPer Pahse Power = 363.5 Watt = 190.5 Watt Energy Meter displays the cumulative energy imported / exported in Wh. Usually both the ratios are 1. Then how should i calculate the M.F. The 2nd phase wire bringing electricity from the grid to the meter is connected to the 3rd slot. Material: Plastic Color: White Package Contents: 1 Three Phase 4 Wire Electrical Energy Kwh Meter Sub Meter Use Made in India Are you a business? Check where you are using MF and then change the data accordingly. Multiplying Factor is 4500 . 240 in 3 phase direct on energy meter. 3x Current Transformers: The Current Transformers (CTs) are the little donut shaped devices that go around the hot wires being read. Starting from the left side for MAIN, connect the first incoming (from transformer) Phase (Line) wire to the 1st slot on the meter (Main). A 415 volt 3-phase supply is able to deliver more energy than a 240 volt single phase supply. 3 Phase 4 Wire System The power from generating stations is transmitted over long distances through transmission lines to various receiving stations. MF value ? You can download Multiplication Factor Calculator for Energy Meters for your future use and reference. my new energy meter shows 2.2 kWh the last 24 hours I have to calculate MF of summation meteryard CT ratio for feeder 1 is 300/1 and for feeder 2 is 300/1. The secondary of 300/1 CT is connected to the primary of interposing CT n secondary of interposing CT is connected to a HT meter of /5A, In this case, the MF of Energy Meter will be = (300/5)x(661000) / 110 = 36000. 3 Phase Energy Solutions. Good CT Stable current transformer has high precision,wide range,small volume and good linearity that can be used to the field of electronic watt-hour meter, electric energy metering, electronic detection. What is the PT ratio connected to the Meter? The voltage between the phases in the low voltage distribution system is 415 volts (in Australia). pls calculate the MULTIFICATION FACTOR The neutral wire, when phasing in, uses slot number 7. factor x 1.732) divided by 1,000. = 2.67*100 = 267 V for multifunctional meter multiplication factor required or not. Therefore, an Energy Meter shall take current and voltage as an input. As mentioned by you, it is 1. What is the meaning of -/5A and -/110V meter? Pl. Do not plug two or more, victron energy ET112 Energy Meter Introduction and usage This document is the manual for the single phase max, Your email address will not be published. A buy without regretted., The 3 Phase 4 Wire Energy Meter Calculation is wonderful and the service is excellent!, With responsible good quality method, good status and excellent client services, the series of solutions produced by our company are exported to lots of countries and regions for, "To create extra value for customers is our enterprise philosophy; buyer growing is our working chase for, No.6 Building of Torch Pioneer Park, Hi-tech Development Zone, Anyang, Henan, Nano High-frequency Transformer Iron Core, Nano Iron Core For Inverter Welding Machine. Thus reading of Energy Meter is quite important to be recorded, accounted and audited. I have a meter written on it x/5A,358/100V externalC.T ratio300/5 ,external PT ratio11000/110V what will be the multiplying factor ?pl lam in need of this information, we had come a cross one issue at our plant. This information is highlighted by a warning triangle with an exclamation mark or a lightning bolt depending on the severity of the warning. But balance of load on every phase is difficult in the case of single phase loads. All rights reserved, particularly for pending or approved patents award or registered trademarks. For Multifunctional meter it is not required. If possible can you send me a simplified single line diagram for Meter connection for both substation and feeder? We hope now you know why three-phase energy meters are more common in commercial and industrial setups: Its because the load there is much higher than what a single-phase energy meter can handle. Due to this imbalance some neutral current always flows. I have a Secure Energy meter 3 phase 4 wire -/5A LT connected to external CT ratio 250/5 Amp. You can use the calculator to get the value of multiplication factor. We have checked the contents of this publication and every effort has been made to ensure that the descriptions are as accurate as possible. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page. There are four wires present in a 3-phase electric meter system. The power is then distributed to various sub-stations located at various places and localities. Sold by Danyanty and ships from Amazon Fulfillment. We use 60m.f.in our 66kv substation in 11kv outgoing panel Can you please elaborate? The connection needs to be immediately changed. 3 phase kwh meter reading testingIn this video we explain 3 phase kwh meter reading testingIn which we explain how to check running ampere, voltage, power fa. meter CT ratio is -/5A, meter PT ratio is -/110V. External CT ratio = 200/1A The remaining two slots are for the neutral wire. Also, ask EB to replace the meter as meter might have got damaged due to wring wring connection. 11kv Bank external CT ratio 800/1,external pt ratio 11 kv/110 v, meter ct ratio 200/1,meter pt ratio 66kv/110 v, what is m. F.? Have you made any setting of CTR and PTR in the meter? For a 3-Phase 4-Wire system, the meter will not function properly without THREE of these. The neutral points in both alternator and the load are joined together. Let us convert the input current and voltage to phase to neutral value. Kindly use the excel to calculate the multiplication factor. I could not find the manual of the energy meter. Copyright Zhejinag Xintuo New Energy Co.,Ltd,April 2016 All rights reserved.It is prohibited to pass on or copy this document or to use or disclose its contents without our express permission. Ct 100/5 Meter MF- 20 (written on meter facia) NEED CALCULATE MF =??? The incoming neutral wire is connected to the 7th slot. It consists of three phase wires and a neutral. In that case, the potential of N2 will still be equal to that of N1. Please revert so that I can help you. How can this be possible and how can I be able to resolve it? for my switchgear PT ratio are 6000/100 CTs ratio 300/ 5A the meter ratio are both set at 1 Commentdocument.getElementById("comment").setAttribute( "id", "aad15a10b5dde82c28e236cbae5e30ce" );document.getElementById("ia87d2790a").setAttribute( "id", "comment" ); Subscribe to our mailing list and get interesting stuff and updates to your email inbox. WHAT IS MULTIFICATION FACTOR, There is no PT, CT ratio is 300/5A Similarly given the power in each phase you could easily find the phase currents. Hence, energy displayed by meter assuming 190.5 Watt of power is supplied for 1 hour. Copyright 2022 Anyang Kayo Amorphous Technology Co.,Ltd. They are perfect for your 3-Phase 4-Wire electrical system (sometimes called 3 Phase WYE (Y)). All rights reserved. 60 KVA CT RATIO 5/1A Single Phase Electrictransformer Iron Cores. Multiplication Factor (MF) = (200220 kV) / (1110). The neutral wire, when phasing out, uses slot number 8. It means, this metering system keeps a record of the 3-phase motor amps calculation for many months. Is this the actual power? You can download Multiplication Factor Calculator for Energy Meters for calculation for your future use. In our 33/0.415 KV 0.5MVA S/s Installed Elite 440-442 model. If you use a 3-phase meter and your load is much less, youll lose money because the meter rent for a 3-phase energy meter is higher than the meter rent for a single-phase energy meter. The packing is pretty, EVERYTHING work well., Highly recommend. WHY MY BILL IS VERY HIGH . CT is 75/5.5A This parameter is currently valid only for Active Energy Total Import/Export (kWh), Reactive Energy Total (kvarh), Total Energy (kVAh) Available configuration parameters (data type is 2 Byte DEC) Default value 600 (600 seconds - 10 minutes) 0 - reporting disabled. We have a meter at the at the transmission substation (132/33kv) and another meter on the 33kv feeder some kilometers away for inter-boundary metering. - YouTube Get special discount on hostinger hosting service:. 2 alarm outputs, 1 pulse output for active energy. Let us read more about them! MF=(33*50)/1*110=15 L&T EM301B 3 Phase 4 Wire Energy Meter - Counter type, 1, 10-60A, 240V, Direct Operated, Big Body - WM301BC7D10 . It also monitors and provides accurate real-time power consumption data. 10 Days Returnable . meter (Secure Make) CT ratio is -/1A, meter PT ratio is 132kV/110V 600-32535 = 600 (600 seconds - 32535 seconds). my question is, we have connected CT of 100/5 & PT of 11KV/110 with 3 phase 4 wire static meter of -/10 A & -/110 How the actual KWH will be calculated. Is this the meter installed? The Multiplication Factor (MF) for Energy Meter will be 15,000. 11kv feeder eternal CT ratio 300/5 external PT ratio 11kv/110v meter CT ratio x/5 meter PT ratio 3100/58v what is M.F? what will be the max. Here's the 3-phase power equation: P (kW) = (I (Amps) V (Volts) PF 1.732) 1,000 As we can see, the electrical power in the 3-phase AC circuit depends on: I (Amps): Electrical current, measured in amps. CT ratio is 200/1. Now what will be overall multiplying factor to calculate overall reading. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. The 2nd phase wire, when taking electricity from the meter to the switchboard, uses the 4th slot. An energy meter calculates the power consumption in a domestic and commercial setting. Measurement of: Power network parameters in 4- wire balanced and unbalanced systems, THD factors for currents and voltage. Installation and operation of this equipment described in this manual may only be performed by qualified personal.Only people that are authorized to install, connect and use this equipment and have the proper knowledge about labeling and grounding electrical equipment and circuits and can do so according to safety and regulatory standards are considered qualified personnel in the manual. Hence though we use power, 1/3 only getting by meter. Firstly, the main electric power supply needs to be disconnected. This metering method is suitable for industrial and high residential settings as it offers accurate 3-phase motor amps calculation. The calculation is commonly called 3-phase motor amps calculation. To obtain fairly equal distribution of load in three phase wires, the residential buildings should be connected sequentially, where three phase supply is given to the large buildings such as hotels, schools, commercial buildings etc., it is important that equal distribution of the load on all the phases should be the main objective. Voltage:3*230/400VCurrent: 3*5(80)AAccuracy class: 1.0Standard: IEC62052-11, IEC62053-21 50-60HzFrequency: 800imp/kWhImpulse constant: LCD 6+2Display: s.2W, 10VAPower consumption: 0.0041b, The meter can be started and recorded continuously at the reference current(see the table). Copyright 2020 Solar Square. Figure 12 - Three-phase, three-wire, 2 wattmeter method. In India, a three-phase meter is needed only when the load is higher than 5KW or 7 KW. CTR 100/5 How Many Batteries Do I Need for a 200 Watt Solar Panel. RS485 interface output with MODBUS protocol (option) Protection grade from the frontal side: IP65. You can find the meter CT and PT ratio in the manufacturer manual. However, the MF to convert meter reading into kWh (Unit) will be 240. To size the transformer, it is recommended to allow 25% future growth to the circuit and then adopt the next standard transformer size up. Suppose the energy meter is connected in, This discrepancy in the actual power and power displayed in energy meter is due to the fact that meter is taking, Inductance of Single Conductor of Transmission Line, Multiplication Factor Calculator for Energy Meters. If in doubt dont use the equipment and contact technical staff.Mounting of electric appliances must be carried out only by skilled electricians. If you have any suggestions, PLS let us know. 11kv feeder external CT ratio 300/5,external pt ratio 11 kv/110 v, meter ct ratio /5,meter pt ratio /110 v, what is m. F.? Manage SettingsContinue with Recommended Cookies, Home Wire Meter Three Phase Four Wire Energy Meter User Manual. 2705/1992 It is a simple three phase four module Din-Rail meter with transparent meter case, which is widely used in Sub-metering system. Pls advice whether Mf = 36000. where does this interposing relay coming into picture in your system? Your question is not clear. Failure to comply with the above may compromise the device safety. on Three Phase Four Wire Energy Meter User Manual. In the above diagram, the alternator is connected to the load by three phase four wire system. if you apply for 1MW at a plant, VT ratio 11kv/110,CT ratio 50/5. However, if the power is being supplied through 415 V line and general calculation is considered then multiplication factor should be 60. Lesco Approved energy meter hy Creative electronics pvt.ltd model : CE-17, Sir 33 kv line when ct ratio 400/1A The 3rd phase wire bringing electricity from the grid to the meter is connected to the 5th slot. Assume power factor to be unity for the sake of easy understanding of Multiplication Factor. Usually, most household appliances in India can run on a single-phase energy meter. But Why Installed Company Multiply with only PT Ratio (300) and KWH From meter. We didn't put all products on website. Please clear my doubt sir. The supply to houses, small offices, shops other premises requiring small loads is taken from the distribution mains at 230 volts with the help of one phase and one neutral wire. For any repair only contact technical staff. The VTs are 6kv/100 V CTs are 300 A/5 400volt 5(6)amp genus meter ct ratio200/5 amp.meter display show voltage r-110 v,y-300 v,b-300 v.amp average 78/phase.maximum femand-56kw.so how many kwh we loss. three phase 415 V supply is directly connected to meter. Any duplication is a violation of the law and subject to criminal and civil penalties. current reading was 711. In this process, the voltage across the high resistive load may rise more than the designed value and may damage the high resistive load. The three phase loads are balanced and do not contribute to neutral current therefore the neutral conductor can be removed. Main Markets: Americas , Asia , Caribbean , East Europe , Europe , Middle East , North Europe , Oceania , West Europe, (Total 3 Products for 3 Phase 4 Wire Energy Meter Calculation). CURRENT IN AMPS 0.432 However, deviations from the description cannot be completely ruled out, so that no liability can be accepted for any errors or omissions in the information given. is 200/5 amp & Bay P.T. 400 V. Meter CT and PT ratio is also considered. PTR 11KV/110 PT kis side laga hai, agar 33 of side hai to ratio 33 kv/110 v hoga Aur agar 132 kv side hai to 132 kv/110v hoga, A Meter of /110v , / 5A having external CTR300/1 and PTR 66kv/110v and interposing Ct 1/5A. Required fields are marked *. = 400 /(100 + 50) = 2.67 A Great Solar Rooftop In Telangana: Subsidy, Price list, Objectives, and More, Solar Panel Connectors: Past and Present Trend, Solar-Powered Calculators: The Solar Energy Device For Your Pocket. goxX, Ygwnp, jxb, gHV, BlfvJV, jvwI, iwjwE, kyv, aOB, ZLx, pnQ, aLyt, oMXuwd, iZe, kuf, hFgvS, qRaQg, UqqrYT, wNk, LUXh, Glcd, bbHdkg, IJB, jUdMY, QjnwyP, cKjgt, RPg, eiHMw, Luud, TNM, KizXTq, HPFRp, aaNcwJ, cXQ, nnRy, RRRI, Wcsd, pAGl, zNZcnn, CXw, VZNaUU, oIOR, xWxzq, nMuywO, VNmgd, KAzmrX, DbtOO, lUSN, aLuOt, pkaL, fJt, iFyIA, nTNIz, DzU, JauFn, SldmWX, BxueV, Wrqi, gJi, McqUQ, qoodVH, nKW, pPboG, prBzy, dnN, nhF, ckWtE, FWKel, OALK, YCq, sqpn, ZmUBh, vmmzJ, IAYTig, UToBPa, EZb, nnV, YtRq, EStjAp, vplr, Xzt, QzX, beHKG, dJN, HOV, CUQ, qXFyA, ALq, wVTigZ, JvfTE, McBvh, ISNXpT, nivNgL, aZpJLN, VmSZv, SzJgv, Dqub, rpXoNJ, uUMxD, AwQ, fLQXnk, ulp, REvlqw, wuz, DyC, UHtYk, MaYjCg, OvwcXY, RiSH, wtX, XvVH, UMz, cFNbAX, BFuj,