JDCF-138GYW Phase Voltage Transformer
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- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- 1000sets set/month
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Brief Introduction
JDCF-138GYW is a product which have 4 windings and oil insulation voltage transformer.The product conform to the follows national requirement:GB1207-1997 phase <voltage transformer>,GB7354-85<Transofrmer Measurement of Partial Discharge>,GB311.1.19 <Insulation Coordination of High Voltage Transformation>,the international electric stand IEC186 or IEC60044 phase <Voltage Transformer> .This type product is used for electric energy measurement and relay protection in 145KV power system.
1.2 Structural characteristics
This type of voltage product has a cascading insulation structure.Iron corn is the " "shape and overlying by silicon steel sheet.Two iron corn were supported by shelf which mad by low dielectric phonetic paper board.Four coil nest is in the two iron com,The coil reelwith balance winding.measuring secondary winding,protective secondary winding,residual voltage winding.The primary winding was made by unifilar enameled wire and have four class,The upper extreme(A extreme) is all insulation.The lower extreme(N extreme)joint to expansion equipment plinth by push ring.There are three oil mark(+45oC,+20oC,-25oC) beside the expansion equipment.The plinth support the whole product,the terminal of measuring secondary winding,protective secondary winding,residual voltage winding,primary winding bring out formthe plinth.The primary winding N extreme joint to the plinth by joint panel which will be convenient to the test and installation.
1.3 Product mark
the primary winding is A and N,the measuring secondary winding is 1a,1n.the proctive secondary winding is 2a,2n.the residual voltage winding is da,dn.
Type description 
Operation condition
2.1 Am bient temperature:
maximum air temperature:+45oC
minimum air temperature:-25oC
maximum average air temperature:+30oC
2.2 altitude:≤3000m
2.3 minimum creepage distance:3520mm
2.4 atmosphere condition:have o serious pollution in atmosphere,the pollution grade is Ⅲ.
2.5 earthing manner:neutral point joint the earthing efficiently.
The rated value and requirement
3.1 the rated voltage
a.the maximum voltage:145kv
b.the rated primary voltage:138000/V
c.the rated voltage of measuring and protective winding:115/V
d.the rated voltage of residual voltage winding:115V
3.2 the rated frequency:50HZ
3.3 phase:single phase
Operation and maintenance
4.1 Before the installation,inspect the sealed place and welding.It has oil leakage and oil surface is normal,If not,it should oiling the same type oil.
4.2 The oil drawing is from the bottom and its electric intensity is not more than 50KV
4.3 The secondary should not open circuit in the product operation.
4.4 The product should veiled when it storage Before the operatio,it should not be sun or rain.The product shoue be packed.
No tesdge for ordering
a.type of product
b.the rated voltage of each winding
c.accuracy class and rated load
d.Frequency 
- Q: how do i work out the voltage output of the second winding on a transformer if i know the Primary voltage is 35v and the first winding has 355 windings and the second winding has 4500 how do you do this ?thanks
- Assuming that the transformer is designed for a primary voltage of 35 or more, then you can simply multiply the applied primary voltage (up to the design limit) by the turns ratio and this will give you the output voltage. In this case: output voltage 35 x 4500/355 444.
- Q: Any help much appreciated here, I cannot understand the following formulas at all. If there is anyone who can please explain in very SIMPLE words I would be very grateful. My exam is next week and I am still stumped on the following.VP/VS NP/NS IS/IP ok this bit I understand, but then here are the QAs that don't make sense to me:Q1) A single phase transformer has 1250 primary turns and 200 secondary turns. Primary V I are 230V and 3A. What are the secondary V I?A) 1250/200 230/vs transpose too: VS 200 X 230/1250 36.8V Why has it been turned upside down?230/36.8 Is/3transpose too: Is 3 X 230/36.8 18.75A Why??The following Q I am even more stuck withQ2) Single phase transformer has a rating of 300/230V, 15KVA. What is the full load of primary and secondary?A)S VI Where did S come from?!Ip 1500/3300 4.55A KVA - is this taken as the V? Not I? Is that why Is 1500/230 65.22A it has been reversed? I'm very confused, please can someone help explain this process to me?
- With good intention, I would criticize UR copying of Q2 :} From the primary (Ip) and secondary (Is) currents listed, this transformer's Voltages should have been: 3300V/230V at 15 KVA note the V(volts) after EACH of the two voltages separated by / and that the primary voltage must be 3300 V and not 300 V in order to agree with Ip Is. I don't know where S comes from, but V?I represents the power rating of a given coil (primary or secondary) in a transformer. If the voltage ratio is 3300/230 14.3478/1 then the current ratio must be the INVERSE 1/14.3478 in order that the power on each side (primary and secondary) is the SAME and equal to 15,000 KVA. {this math assumes 100% efficiency which is an IDEAL case for a transformer}
- Q: Transformer 1250KVA Dimensions
- 10kV grade distribution transformer oil immersion 1250KVA appearance size 1786X1170X1410 (length X width X height); dry 1250KVA appearance size 1470X1200X1450 (length X width X height), for reference, the specific best asked suppliers.
- Q: Calling all fans of Transformers! I am looking for anyone to tell me if Transformers Animated is coming back for a third season on Cartoon Network. The reason why I am asking this question is because I recently bought the second season of the show and noticed that they have a lot of information on new characters as a special feature and I am wondering if those characters will be in the third season of the show.
- unlikely they will not
- Q: describe a stabilised transformer
- I'm only guessing that you may be reffering to a transformer that is equipped with taps on the windings that allow for +/- 10% votage changes on the secondary to maintain a fixed voltage when the input voltage (primary) varies or the load on the secondary varies. Thus stabilizing the voltage to the load. These are called TCUL (tap changeing under load) or LTC (load tap changing)-the more common term-transformers.
- Q: I use transformers in my circuitry all the time but when a transformer is say a secondary 12v 1a transformer than what does it mean by 1 ampis it that the secondary winding wire will pop after 1 amp doo to the simple thinness of the wire? or that the ohms of the secondary coil, when using iv/r, 112/12so does this tell you that the coil is 12 ohms?please don't give me other information about the transformer just answer the question please.
- It simply means that the maximum safe operating load on the transformer's secondary is 12VA. The maximum safe operating power this transformer can furnish (12 V)*(1A)*(power factor of load's impedance). Power factor is always equal to or less than 1. Power factor cos [arc tan (XL - XC)/(R)]
- Q: Hope to engage in the transformer predecessors to answer. I hope you help me introduce a little more recommended information better
- I have seen the 220kV power transformer minimum 63MVA, the largest 250MVA, there is no such specification is not clear, it is estimated that small and small is not where to go, and then big is not where to go for reference The
- Q: I check the voltage between x1 and x2 I got 120v but between x1 and ground on primary I got 40v and between x2 and ground on Primary I have 50v, if I connect x2 to ground won't it short the transformer? Thank you
- I am thinking that your incoming power is 208 volts and you want to convert to 120 volts. If i haven't made myself look foolish, you merely need to use your x1 and x2 wires to continue on as your 120 volt power source. Cap off, do not connect/use the other connections involved on your multi tap transformer. If I have the idea wrong.never mind what i said. To ground the transformer, truly grounded? you need to connect the metal, unpowered shell to a ground. If you mean make a neutral/ground, you don't.
- Q: I need a specific transformer to make 5V go up to 170V. It can be a little high and I can just use a potentiometer to lower it if needed. Where can I find such a specific transformer?
- YOU MAY USE ANY TRANSFORMER PRIMARY WINDING HAS 110V X 2 AND SECONDARY WINDING HAS 5V OR 5V X 2. THIS IS A COMMON TRANSFORMER SOLD IN SHOP. JOINT THE 110V WINDINGS IN SERIES TO PRODUCE 220V.
- Q: I need help figuring out this transformer question. I have no idea how to go about it and any information or help will be useful.A 100-kVA, 60-Hz, 7200-480 V, single-phase transformer has the following parameters expressed in OHMS:Rhs3.06 Rls0.014Xhs6.05 Xls0.027Xm,hs17,809 Rfe,hs71400The transformer is supplying a load that draws rated current at 480V and 75 percent power-factor lagging. Sketch the appropriate equivalent circuit and determine:a) The equivalent resistance and equivalent reactance referred to the high side.b) The input impedance of the combined transformer and loadc) The load component of high-side current;d) The input voltage to the transformere) the exciting current and its componentsf) the input impedance at no load
- A 100-kVA, 60-Hz, 7200-480 V, single-phase transformer has the following parameters expressed in OHMS: Rhs3.06 Rls0.014 Xhs6.05 Xls0.027 Xm,hs17,809 Rfe,hs71400 Primary winding is 15*N turns r 3.06 ohms in series with The primary leakage reactance which is L 16mhy(6.05 ohm @60Hz) in series with the magnetizing indctance Xm 17809 ohms 47.24hy which completes the primary series string the core loss is modelled as a 71.4k ohm resistor across the magnetizing inductance the secondary winding is 1*N turns R 0.014 ohms in series with the secondary leakage reactance is L 71.3UHy(0.027ohm@60Hz) the load draws 208.33A (100,000VA/480V) Z 2.304 ohms @ 48.6 deg 2.30448.6 1.786 ohms in series with +J 1.524 ohms(4.042mHy) (75% pf comes from voltage drop is seen from 2.304 ohms but only 75%(1.786 ohms) is resistive transfer from secondary to primary is done by multiplying impedances by 15^2 225 you should be able to do it from here.
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JDCF-138GYW Phase Voltage Transformer
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- 1000sets set/month
OKorder Service Pledge
OKorder Financial Service
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