SCB9 SCB10series of resin insulating dry-type transformer

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SC(B)9/10-□/□ series of resin insulating dry-type transformer

1. Model

S---------------------------------three-phase

C----------------------------------solidification forming (epoxy resin cast)

B----------------------------------LV foil coil

9-----------------------------------performance code

□---------------------------------rated capacity (KVA)

□---------------------------------rated voltage (HV KV)

2. General

With the advanced technology brought in from overseas, we developed SC9、SCB9 series and SC10、SCB10 series padding thin-insulation dry-type distributing transformer whose winding is sealed up with epoxy, therefore the resin insulating dry-type transformer is flame-retardant, explosion-proof, free from maintenance and pollution, and it is compacted and can go deep into load center, besides, with scientific and reasonable design and coating craft work, it has advantages of low partial discharge capacity, low noise, good heat dispersion and it can run over a long time with 125% rated load in the circumstance of cold wind. It applies intelligent thermal controller and has the functions that it will alarm when there is fault or the temperature is exceeded and switch off as the function of “black box”. It can be monitored and controlled by connecting it to the computer through its RS485 serial interface.

Therefore, it is widely used in the places such as hotel, restaurant, airport, power plant, hospital, skyscraper, shopping center, and residential areas and other adverse environments like subways, smelt and power plant, ship, offshore drilling platform, etc.

1. Technical parameters

Rated capacity (KVA)	Voltage group(KV)		Vector group	Dissipation (KW)		No-load Current (%)	Impedance voltage (%)	Insulating level	Weight (kg)
Rated capacity (KVA)	HV	LV	Vector group	No-load	Load (120℃)	No-load Current (%)	Impedance voltage (%)	Insulating level	Weight (kg)
10	11 10.5 10 6.6 6.3 6	0.4	Dyn11 or Yyn0	0.15	0.325	7.2	4	F/F	130
30				0.215	0.75	3.2			260
50				0.305	1.055	2.8			315
80				0.415	1.460	2.6			470
100				0.45	1.665	2.4			520
125				5.30	1.955	2.2			585
160				0.61	2.25	2.2			670
200				0.70	2.675	2.0			790
250				0.81	2.915	2.0			920
315				0.99	3.67	1.8			1085
400				1.10	4.22	1.8			1320
500				1.305	5.165	1.8			1520
630				1.46	6.31	1.6	6		1820
800				1.71	7.36	1.6			2105
1000				1.99	8.60	1.4			2550
1250				2.35	10.26	1.4			2900
1600				2.755	12.42	1.4			3490
2000				3.735	15.30	1.2			4220
2500				4.50	19.53	1.2			4955

Q:What is the vacuum impregnation of the transformer?: To complete the winding and core assembly of the transformer, into a special dipping tank, the first vacuum, then open the lacquer,

Q:I have a doorbell that quit working. I don't know how to tell if it is the bell or the transformer: Yes it could be a dangerous situation. A better arrangement would be to mount the transformer on the outside of the panel box through a knockout. Better yet, mount it on a separate octagon box on the wall near the panel. Most doorbell transformers have an option to mount through a knockout on a box so that the 110 volt wires are inside the box, which is then covered with a blank plate. The doorbell wires then connect to the transformer outside of the box so there is no danger of high voltage getting into the low voltage circuit.

Q:If a transformer is rated for a maximum winding current of 10A, would it be permissible to operate it with 10A of input current when the secondary voltage to the load is 40V? Can you explain to me why?The information on the auto transformer plate wasInput 240V/ 50/60 cy 3HPoutput 0-240/280V 20 ampsThe parallel load resistance is 34.5 ohms: At 40 V and 10 A the VA is 400 on the secondary side. At 240 V on the primary side the current is 400/240 which is 1.66 A. If the load on the secondary side is 34.5 ohms at 40 V then the secondary current is 40/34.5 1.16 A and the the VA on the secondary side is 40 x 1.16 46.4. T he VA on the primary side then is 46.4 and the primary current is then 46.4/240 0.19 A. 3 hp is 746 x 3 Watts 2238 W and its rated current on the primary side is 2238/240 9.325 A. In other words the VA loaded on to the secondary side is the same VA (more or less) as that on the primary side.

Q:Current and Potential transformers both are actually Instrument transformers, which step down or lower down the values of current and voltages for measuring purposes.But I have heard of that both CT and PT specifically are used for stepping up current and voltages at some point of transmission system.if this is correct then can anyone tell where they are used?If not then there are step up transformers for similar uses but my question is why they are not called as CT's or PT's.: The usual application of CTs and VTs is to provide isolation between the power system and instrumentation and/or protection equipment. And in this instance, the transformation is usually to reduce the magnitude of the voltage or current that is being measured. There occasionally are instances in which it is necessary to increase the magnitude of voltage or current. In most instances these situations involve relatively minor adjustments in the magnitude of voltage or current and take place in the CT or VT secondary. The transformers that are used to make these adjustments are typically called 'auxiliary' CTs or VTs. There are a few very specialized situations in which CTs or VTs are used to couple a signal into the power system itself. One example of this is where a high-frequency signal is superimposed onto the power system to establish a control communications channel. So-called 'power line carrier' signals are usually in the kHz range, and are typically coupled into the system via VTs - most often, capacitive VTs rather than inductive VTs.

Q:1- the properties of electrical transformers . #92;2-their uses . #92;3-their applications.: Electrical transformers are of two types step-up and step-down. Step up transformers boost your input current where by the step down will decrease the current. Heat will be generated from the transformers as energy is used up. these transformers have to be cooled by either using oil or air. They are used in almost all your electronic gadgets where you use adapters instead of battery, as well as in the circuits. They are used in community power supply

Q:i heard that there is an electric transformer used in single phase electric furnace and other applications , its benefit is to get more balanced current load from the three phase system to feed a single phase load.i need to know how its can transform three phase supply into single phase supply, and if it can be used in reverse matter i.e can it deliver a three phase power from single phase supplythank you in advance: this okorder

Q:I am building a simple circuit and was wondering what is the difference between a coil and a transformer? Also, in my circuit I have a generator. My generator is made up of a coil and magnets. I would like to know do the amount of turns my coil is determine the power of the generator? When I select the gage wire I am going to use we that determine the amount of volts and current I can gain from my generator?: A transformer is two or more coils that share the same magnetic flux path. In an ideal transformer (every bit of flux caused by current through one coil circles every turn of that coil and also circles every turn of all other coils in the transformer), every turn of all coils shares a similar induced voltage that is proportional to the rate of change of that common flux. Two coil transformers have the property that the power going into one coil will exit the other (except for copper and iron losses). Since power equals voltage times current, and volts per turn are all the same, a transformer with half as many turns on the output winding (secondary) as there are in the inlet winding (primary), will output half as much voltage as is applied to the primary, but will output twice as much current as goes through the primary. That way, the product of voltage times current going in equals the product of voltage times current going out. -- Regards, John Popelish

Q:How is the insulation of the transformer divided?: n the oil-immersed transformers, the main insulation to oil-paper barrier insulation structure is most commonly used. The longitudinal insulation is the insulation between the parts of the same winding, such as insulation between different windings, between layers and turns.

Q:I have a transformer scavenge from a VCD player, written 25W on VCD player, so that should be the transformer's VA rating ?I also measured the transformer, it has 2 secondary. It have 11.1VAC on 1st output winding and 13.1VAC on 2nd output winding.So if I were to use into DC (rectification) and calculate for other maths, should I use the value of 11.1VAC / 13.1VAC, or their average which is roughly 12VAC ?: nicely the voltage could desire to be smash up around the resistors (as resistors in sequence artwork as a voltage divider) with a million/11 going around the 100ohm and 10/11 going around the 1kohm, so i could anticipate look on the 0.4W resistor. With R of one thousand and P (max vigour) of 0.4 you need to use the equation ( P VI or greater, PV^2/R) 0.4 V^2 / one thousand 4 hundred V^2 V 20V

Q:What is the transformer absorption ratio (R60 / R15): Generally, the absorption ratio should be greater than or equal to 1.3 as the absorption ratio is acceptable.

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