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: I know my user name indicates that I looooove X-Men but I loooove Transformers too. I was wondering if anyone knew who the transformer that comes out of the pool is. I have looked at the concept art and can't figure it out.
- Looks like Megatron to me, but this movie is going to suck ***. It has shia lebouef in it and he is such a crappy actor.
- Q: I have a question can someone explain why transformers get hot in use and why must they not be allowed to get too hot
- Transformers Hot
- Q: A 8000kva transformer can bring the maximum load
- Transformers are best not to run full of the efficiency of remember the best 60 to 80%
- Q: The core part of the transformer is composed of sub-and sub-components, which are generally divided into two transformers. Urgent, quick answer What is the core part of the "what" and "what" sub-composition ah? The "What" son, this "what" is to fill you ah.
- The core part of the transformer is composed of (primary coil) and (secondary coil), generally divided into two types of step-up transformer and step-down transformer. (In fact, there is not a step up and not buck the isolation transformer) Did not hear the transformer "what son".
- Q: Can someone all the Transformers stuff? I mean, I see a lot of stuff about 'G1' and 'G2' and I think I heard something about their being TONS and TONS of different storylines for it.Will someone name each storyline, and what G1 and G2 is, and please tell me the official canon usage?
- I'd like someone to explain these dumb Action movies to me too!!! :
- Q: A 1:150 transformer has a primary voltage of 4500 V. (a) What is the voltage in the secondary coil? (b) If the transformer consumes 45 W, what are the currents in the primary and secondary coils?
- 1:150 implies a Voltage Step Up transformer. Hence the secondary voltage is 4500 x 150 675000 V 675 KV. 45 W at 4500 V means Ipri 45 / 4500 1/100 A or 10 mA. Secondary current 10 mA / 150 66.6 uA If they meant a 150:1 transformer the answers would be:- Secondary Voltage 4500 / 150 30 V. Primary Current 45 / 4500 1/100 A or 10 mA AGAIN; Secondary Current 10 mA x 150 1.5 A.
- Q: Why the provisions of the maximum temperature of the provisions of the transformer 65 °?
- Most big oil temperature increased load, the transformer internal fault, there is lack of oil performance security risks. So we do need to limit oil temperature and protection tripping. Small capacity (630KVA less and outdoor) often do not have the oil temperature protection. I have the original table 800KVA overload (secondary current 1500A), top oil temperature to over 90 degrees ......
- Q: If on the secondary coil we tapped the center to ground, why is it that the top to middle is opposite in polarity when compared to the middle to bottom of the inductor? Also does this only happen if their is a change in current and not constant current going through the transformer?
- the first question think of it as a single coil, 24 V transformer when you measure from bottom wire to the top wire you will measure 24V if you measure from bottom to center it will be 12 V the same from the center to the top maybe it is easier to understand if it were 2 batteries in series images.google.ca/images?hlfrsou at the moment in time that the top is +12, the bottom is -12 therefore giving the 24V this is always like that regardless of the nature of the load Anita
- Q: From the following transformer, how would I calculate:a) the equivalent impedance on the low-voltage sideb) Converting the impedance found in (a) to it's per-unit quantities
- a) the turns ratio of the transformer is 20 to1 so to refer an HV side impedance to the LV side you divide it by the square of the turns ratio which in this case is 400 which gives: 0.001+j0.00025 ohms. b) There's a certain amount of freedom in doing this for you may define the per-unit impedance base however you want. It is however rather usual to define it as VA / I^2. Here I 5000/2400 2.083 amps So base impedance HV side 5000/2.83? 624 ohms making the given impedance (0.4+j0.1)/624 p.u. This p.u. value should be the same on either side of the transformer. Nice to see you around again but do I notice you haven't improved at saying please when you want someone to do something for you for nothing. If you can't learn that there's not much use in learning all these technical skills. You're going to remain a clumsy oaf!
- Q: How does a transformer effect amplitude modulation in an am transmitter. i would really love this to be explained from the basics as i am not so advanced in electronics. but i would really like to comprehend how this happens form the basics. thank you
- The collector of the output transistor or plate of the output vacuum tube in a high power AM transmitter has DC voltage and an audio signal applied to it. The audio signal causes the the transistor/ tube to create AM. The AM radio frequency is shunted off to a tank circuit and then coupled to the antenna. A transformer is used to couple the audio signal to the transistor's collector/ tube's plate. A high power audio signal is applied to the primary side of a transformer and the secondary of the transformer is connected in series to the DC power source to the output device. This creates a varying DC voltage to the output device which creates Amplitude Modulation.
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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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