SGB10-100-2500-10 H-class insulation three-phase dry-type transformer

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Production introduction

Our company has developed this product by ourselves.As a high performance,high safety,pollution free dry-type transformer,it is suitable for the harsh environments where there is a high fire protection requirement,the great load fluctuation and the site where is of filth and moisture.For example:airport,power plant,metallurgy operation,hospital,high building shopping center,densely inhabited ared,petrochemical industry,nuclear power station and nuclear submarine,elc.

Normal service conditions
1.A unique ceramic type of insulation structure is adopted in H-class high strength insulation cylinders and high-frequency ceramic cushion blocks are adopted to ensure that no deformation will occur.
2.The high-voltage and low-voltage windings are made of NOMEX wrapped flat copper wires and imported copper foils.And they are sealed with high strength insulation materials.
3.The iron core is made of laminated imported high-quality silicon-steel sheets of high magnetic conductivity with a 45 stepwise all-bias structure.A flexible fastening unit is adopted to fasten the winding and iron core,which ensures a relatively low no-load loss and low noise.
4.Outlet terminals are fixed to the top of winding,taps are in the middle of winding,low-voltage line terminal are in plate-type current-conducting rows for which cold pressure welding is adopted.

Normal service conditions
1)Altitude should not be over 1000m:indoor type
2)Highest ambient temperature should not over:+40oC;Highest daily average should not over temperature:+30oC
3)Highest annual average temperature should not over +20oC,lowest temperature should not below -5oC,We can provide transformer operated in special conditions according to user's requirement.

Model designation

Applicable standards
GB6450-1986 Dry-type power transformer
GB/T10228-1997 Technical parameters and requirements for dry-type power transformer
GB/T17211-1998 Guide rules for dry-type power transformer load
GB10237-1998 Insulation level and insulation test for power transformer
GB4208-1993 Casing protection grade(IP code)
JB/10008-1999 6~220KV transformer sound level
JB/T56009-1998 Product quality grading for dry-type power transformer

Performance characteristics
1.Excellent heat dissipation,long thermal life,good overload capacity,without forced air-cooling under a long-term 120% overload and IP45 condition.It can operate for a long time at full load.
2.Extremely high safety fire resistance performance,smoke-free while burning under a temperature as high as 800oC.
3.Extremely high thremal shock resistance capacity.
4.100% water-proof,excellent moisture -proof.
5.Unique winding structure and field strength calculation makes partial discharge impossible.
6.Low loss and significant energy saving effect.Compared with SC9 series of dry-type transformers,the no-load loss falls 10% and load loss falls 5% in average.
7.The insulation material and copper conductor can be dismantled easily and recycled after the service life. Therefore,no pollution will occur.

Notes for placing orders

Transformer type:rated capacity kVA
Number of phases:three-phase single-phase
High voltage: KV/Low voltage:KV
Frequency:50HZ 60HZ
Tapping range:±4×2.5% ±3×2.5% other
Connection group:Yyn0 Dyn11 other
Impedance voltage:4% 6% other
Cooling method: ONAN ONAF
Protecting grade of outer casing:IP00 IP20 IP30 other

Method of incoming and outgoing line:
1.Incoming line to lower part and outgoing line from upper part
2.Incoming line to upper part and outgoing line form upper part
3.Incoming line to upper part and outgoing line form side part

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Q:how to construct a transformer?
Please don't! By the time you buy the special core material, the 2 types of copper wire, a good house content and life insurance for yourself, you can buy a finished and safe one from Maplin (if you are in the UK) for Pds.15.99 and that is a 45 Watt type. And finally, you say you want 60 Hz ? Then you also need 60Hz at the input, because a transformer doesn't change from 50Hz to 60Hz. Still want to know how it works? Read
Q:What is the meaning of auxiliary transformer, sub-variable and box change
During the main transformer failure or overhaul, the auxiliary transformer provides the substation's own electricity. Maintenance of substation lighting, high and low voltage switch action, with the cabinet switch operation, for instrumentation and automatic control system work, sub-change can be box change,
Q:doesn't the working of a transformer violate the ohm's law ?
A transformer does not make the current inversely proportional to the voltage; the currents in the two coils are inversely proportional to the turns ratio Q. If the secondary (output) coil drives a resistance, the current depends on Ohm's law; Is Vs/R. The resistance equals the ratio Vs/Is. But the ratio V/I in the primary (Vp/Ip) is multiplied by Q^2; that is, V is proportional to Q and I is proportional to 1/Q. So the power source driving the primary sees a load resistance Q^2R. The power, or product of V*I, is the same in the primary and secondary. But no matter what you do with the input voltage, the currents in both windings change proportionally to voltage. You can think of a transformer as similar to a lever, where V and I correspond to F and d (distance), F/d correwponds to R, and Q corresponds to the applied-work and output-work lever lengths. Work Fd is constant on both ends of the lever, and F/d has a Q^2 relationship between the two lengths of the lever.
Q:Question about Transformers comics?
transformers are crap why do you read them?!?!?!?!?!?!
Q:twilight vs transformers?
Thank you!!!! :D Definitely Transformers. Even the second one too. The second one was even better than the first one. The first Transformers will blow both Twilight movies away combined! Hehe, sorry I love Transformers I'm sick of hearing about that Twilight franchise:P
Q:How do step up transformers obey the law of conservation of energy?
The regulation of conservation of capability is that capability won't be able to be created or destroyed. A transformer does not make extra capability,yet rather it takes the voltage and will boost it , this might seem to push aside the regulation yet rather in basic terms making extra it reduces the the present. As voltage will boost by using say 10 circumstances the amperage a million/10 of the orginal.
Q:How come step-up transformers reduce current in transmission lines?
Here are some basic equations for transformer. V-high / V-low N-high / N-low Eq. 1 I-low / I-high N-high / N-low Eq. 2 where, V-high voltage at high voltage side V-low voltage at low voltage side I-high current at high voltage side I-low current at low voltage side N-high number of winding turns at high side N-low number of winding turns at low side Eq. 2 above could be written as I-high (N-low / N-high)I-low substitute Eq. 1 I-high (V-low / V-high)I-low Eq. 3 Let us have an example to give a good answer to your question. Consider a 30 MVA, 13.8-138 kV, 3-phase step up transformer. The 13.8 kV is at the generator side and the 138 kV is at the transmission side. Low side current is I-low 30,000,000 / 1.732(13,800) 1255 A High side current is I-high 30,000,000 / 1.732(138,000) 125.5 A it shows that I-high is less than I-low. Also, using Eq. 3 to further confirm result, we have I-high (V-low / V-high)I-low I-high (13,800 / 138,000) 1,255 I-high 125.5 A
Q:Low volts transformer question?
The minimum transformer you need, with 80 percent safety factor, and internal inefficiency, is 500 W, so get the larger one.
Q:Transformers Question!!!!!!!!!!?
Transformers can be brothers if their Sparks split naturally upon being introduced to a protoform. See G1 Sunstreaker and Sideswipe. Transformers may not have sexes, but they do have different genders. They are simply made this way by their God, Primus.
Q:is transformers 2 a good movie?
I liked it, but it definitely could have been better. The first one was a LOT better, but if you liked the first one, you will like this one. It was an action movie, for sure. And it was funny. It was good, but not super great.

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