S11-M.R-30~2500/10KV Three Phase Scrolliron Core Distribution Transformer
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S11-M.R- 30~2500/10KV three phase scrolliron core distribution transformer is suitable for distribution system with 10KV.50HZ for industrial and mine enterprise and power illimination.It confirms to GB1904<power transformer>standard.
- Q: A small transformer used in a foundry has 550 primary turns and 20 secondary turns. Initially, the switch on the secondary side of the transformer is open, so there is no connection between the two ends of secondary coil.(a) What is the voltage difference between the two ends of the secondary coil, Vs, if a direct current potential of Vp 120 V is placed across the primary coil? (That is, the frequency of oscillation on the primary is zero.) (b) What is the voltage difference between the two ends of the secondary coil, Vs if Vp is 120 V and the frequency of oscillation on the primary is 60Hz? (c) Now equipment powered by the transformer is put into use and the switch is closed. A resistance of 14 Ω is placed between the two ends of the secondary coils. What is the current through the secondary coil? (d) What is the current through the primary side of the coil with the switch closed? Thanks so much!!
- A. Zero, since dc current does not have a varying magnetis field. B. 550/120 20/ X 4.3636volts Ne /E p Ns / E s C.4.3636v / 14 .311 a. Es / R t A s D. .011 amp if the transformer is 100% efficient
- Q: What are the technical parameters of the transformer?
- I, temperature rise and cooling: transformer winding or the upper oil temperature and the temperature difference between the ambient temperature of the transformer, known as the winding or the upper oil temperature rise. Oil-immersed transformer winding temperature rise limit of 65K, oil surface temperature rise 55K. There are a variety of cooling methods: oil from the cold, forced air-cooled, water-cooled, tube, chip and so on. J, Insulation level: Insulation class standard. Insulation level of the method for the following example: high voltage rated voltage of 35kV level, low voltage rated voltage of 10kV level transformer insulation level expressed as LI200AC85 / LI75AC35, which LI200 said the transformer high voltage lightning impulse withstand voltage of 200kV, power frequency withstand voltage For the 85kV, low voltage lightning impulse withstand voltage of 75kV, power frequency withstand voltage of 35kV. Oaks High Technology Co., Ltd. The current oil-immersed transformer product insulation level LI75AC35, said the transformer high voltage lightning impulse withstand voltage of 75kV, power frequency Withstand voltage of 35kV, because the low pressure is 400V, can not be considered. K, the connection group label: According to the transformer one. Secondary winding phase relationship, the transformer winding connected into a variety of different combinations, known as the winding group. In order to distinguish between different groups, often using the clock representation, that is, the high voltage side of the voltage phase of the clock as a long needle, fixed on 12, low voltage side of the phase voltage as the clock short needle, (A) is a (triangular) joint, and the secondary winding is a (star) junction with a center point, and the group number is (11).
- Q: I live in Market Weighton and I need to know why my local electricity transformer is. Where will I need to look?
- For residential, the step down transformer for home electricity use is typically a pole top mounted transformer. It may be at the top of a power pole near your residence. Sometimes there may be a pad mount transformer (square metal box) near your home that is used. You may want to look outside your home, and see where the wires coming into your electrical service are coming from. That should tell you where the transformer is. If you live in a newer neighborhood, you may have underground service ( thus no power poles) and the transformer may not be visible. It would likely be close by in an underground electrical vault. There is a picture of a pole top transformer in the attached article below:
- Q: I heard somewhere that Steve Jablonsky's orchestral score to the new Transformers movie (which is fabulous!) would eventually be released on CD. Does anyone know anything about this?
- it will be soon, cause since he did the score for the video game he was also doing for the movie i've seen the movie and some of my friends heard the score from the video game and said it was not 100 percent the same as in the movie, almost a remix jablonsky also worked alot with zimmer, and james newton howard, for those with a good ear. he helped zimmer and howard with the batman begins soundtrack and you could kind'of hear some of the meleodies scores majority of the times, comes out late like a month after the movie comes out.
- Q: How can the locations and polarity of the windings be tested on the various legs of a core when it has 2 open(circuited) three pahse windings (III and iii)?what measurements are required , assuming that the transformer is so enclosed that only the 12 winding terminals are visible?Ohmmeter , voltmeters , a single phase voltage supply are available.
- It is assumed that the primary and secondary voltages are within the range of standard voltmeters,example 440/220 Volts AC.Transformer terminals as you mentioned are 12 terminals.Label the terminals: 1; 2; 3; 4; 5; 6; 7;8;9;10;11 and 12.Let 3 concide with terminalII. With an ohmmeter,check for the end of 1, it should be 4;likewise for 2, the end should be 5; and 7 should end with 10, 8 should end with 11.Look for the end of 3 or III, and label it with 6; iii or 9 should end with 12. Assume for a primary wye connection. With this connection, connect terminal 4 and 7, 5 and 8, and the wye terminal 10,11 and12.With the primary supply disconnected, disconnect also, the load end secondary connection. Impress a single phase 220 volt supply between terminals 1 and 2 of the secondary. Test the voltage between 1 and 2 in the primary. A voltage of 440 volts should register, assuming the transformer ratio is 440/220volts. ATline 3 and 1, voltage should be 380 volts only and so with 2 and 3.Switch off test voltage supply and connect terminals iii,6 and 9 with a small magnet wire, No.20 AWG.Impress the test voltage and measure voltages across :1 -2; 2-3; and 3-1. An equal voltage of440 Volts should indicate if not, change the polarity of III and iii,6 and proceed with the same procedure.If the voltages at the primary are equal, replace the jumper across 6 and 9 with an original jumper wire.
- Q: i rememeber when i was a lil kid i used to watch Beast Wars on friday nights. I think it was back in 2000 or so. It was pretty cool too; as opposed to transforming cars, etc, there were transforming animals. also there werent any humans.imo the new transformers animation sucks, though the movie was greatim sure Beast Wars and Transformers are related because they used names like Megatron and Octomus Prime (sp?)so yeah. what happened to Beast Wars?
- yea beast wars was old school, and i think its better than cars. im not sure why they changed it
- Q: How does the core material affect a transformer? Such as if you use steel vs. air. Or wood vs. magnet.
- In 50 or 60 Hz transformers putting in a laminated magnetic iron core greatly increases the amount of magnetic flux which is generated by the primary current with the secondary on open circuit (the so called magnetising current). This enables the windings to generate a relatively high voltage with relatively small magnetising current. If you tried to make a 50/60 Hz transformer without a magnetic core (with say air or any other non-magnetic insulating material) it virtually wouldn't work because the magnetising current would be so high (the primary winding practically a short circuit). If you used a non-magnetic conducting material you'd be even worse off because eddy currrents generated in the material would prevent any flux being established and you'd have plenty of core heating but no coupling between primary and secondary. For this reason even the iron core must be laminated (unless it's non-conducting ferrite). The story is quite different for high frequencies where the inductive impedances of coils are enhanced by the frequency. There you can make quite effective air cored transformers; small ones at least - but you'd still better avoid conducting material in the core - that's what food is in a microwave oven; conducting material in the core of a high fequency transformer.
- Q: Hello everyoneA 240-110 stepdown transformer is used with quite a lot of equipement in my home and I have recently become a bit concerned about the effects that they have on the equipement.Thanks to some web page I stumbled across saying that transformers can 'overheat' your equipement etc.And since most transformers aren't made by any big name brands, there really isn't a way to tell if the one in posession is a 'high quality' one or not.So my question is, do transformers actually damage your equipement?Anyone have expertise in this area?Thank you very much.
- Check the Wattage consumption of your equipment, it should not exceed the wattage output of your transformer.
- Q: I was just curious if they ever had an episode or something where somebody manipulated a captured transformer and was able to control it or something, or something that turned someone into a transformer. far fetched ya but god knows the stuff that's out there these days, so I was just wondering.
- no they don't
- Q: I was very disappointed with Transformers 2, there was no acting way too much action. Does anyone else feel the same way?
- There was actually more comedy in this one than the last one. There was more action in this one to make up for the last one which didn't have as much as this one did. This movie also brought more enemys in it. All in all it was better than the first one because there was more of every thing present in the last one.
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S11-M.R-30~2500/10KV Three Phase Scrolliron Core Distribution Transformer
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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