SCB9-30-2500-10 Epoxy resin dry-type power transformer

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Production introduction

The dry-type transformers are casted with epoxyresin,which are made of high quality materials by means of a strict process with advanced production and testing devices.The product features high reliability and long service life.In accordance with different operation environment,it can be equipped with different protection casings or without casing.It can replace the oil-immersed transformer and be used in the high buildings,business centers,airports,tunnels,chemical plants,nuclear power stations and watercrafts ect.

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
GB4208-1993 Casing protection grade(IP code)
GB/T10228-1997 Technical parameters and requirements for dry-type power transformer
Performance characteristics

1.The product is safe,fire-proof,pollution free,and can be used in the load center directly.
2.High mechanical strength,strong shour-circuit proof capacity,small partial discharge,excellent thermal stability,high reliability,and long service life.
3.Low loss,low noise,energy saving and maintenance free.
4.Excellent heat dissipation,great overload capacity and a large operating capacity is available when ONAF is applied.
5.Good humidity resistance,it's suitable for operating in the highly humid and harsh environment.
6.An intelligent signal and temperature control system is adopted,which can automatically monitor and display all working temperature of the three-phase windings.The blowing fan can give an alarm,switch on and off automatically and conduct tripping operation to protect the transformer.
7.Dur to the structure is compact and weight is light,it can save space and decrease the cost of installation.

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:Can dry transformers and distribution cabinets be placed in the same room?
Dry transformers and power distribution cabinets can be placed in the same room. Oil-immersed insulation with insulating oil, dry type with resin insulation, dry-type safety is better than oil-immersed transformers. In the event of a fire or explosion, oil-immersed insulating oil may increase the risk of accidents, so need to be set separately, and the transformer base should have oil leakage design. And dry type change will not have such a danger, it can and power distribution cabinet set in a room, while dry-type transformers and distribution cabinets in the same room easy to overlap, busbar and cable consumption on the reduction, operation and maintenance More convenient, articulated ground and check the power outage when the glance.
Q:Parallel Operation of Transformers?
I don't recognize your transformer designations in a) and b). Perhaps they are industrial transformers that I am not familiar with. My background is electronics, not power distribution. That being said, I'm not sure why you would want to connect transformers in parallel. Possibly to handle a load that exceeds the capacity of one transformer. If this is the reason, it would be better to split the load between two transformers if at all possible. If it is a single load that can't be split, the turns ratios for the two transformers would have to be exactly the same. For that matter, the transformers should be exactly alike, to make sure that they carry the load equally. (A higher source impedance in one transformer would cause the other transformer to carry more than its share of current.) Then it is very simple: connect like terminals together, taking special care to line up the phases. If for some reason you are unable to identify the phase (commonly marked with a dot next to the winding on a schematic diagram), do the following: 1. Connect the primary windings together, wire 1 to wire 1, wire 2 to wire 2. 2. Connect one wire in the secondary of one transformer to a wire in the secondary of the other transformer. 3. Carefully apply power. 4. Measure the voltage between the two loose secondary wires. It should be zero. If not, change one of the wires in step 2 above.
Q:HELP!! Distribution Transformer?
120 kVA, 7000/277 V (What does this rating mean) Primary voltage rating: 7000 V, secondary voltage rating: 277 V, rated load: 120 kVA It is unclear whether this is a single-phase or three-phase transformer. You probably need to assume it is single-phase. The equivalent circuit of a 3-phase transformer is analyzed as one of three single-phase transformers that could be connected to make the equivalent Y-Y three-phase transformer. The secondary voltage, 277 V, is the line to neutral voltage for a 480 V, wye distribution system. That is a USA standard system voltage. The primary would be 12,124 V L-L, 7000 V L-N. That would a reasonable primary distribution system voltage. Referring the circuit to the low side means changing the primary component values to the equivalent secondary values and moving the ideal transformer to the primary side of the circuit as shown below. To change the primary impedance values, multiply by (Sec V/Pri V)^2.
Q:Transformers, where to start?
Q:Lights in house dimmering / flickering after lightning hit transformer?
When lightening strikes power lines or transformers it causes a power surge, without the proper precautions (surge arrestor) this can cause damage to electronics and other misc. electrical items including the transformer, the service, the meter, and the panel which cant be protected by a surge arrestor, First things first, you need to contact the power company and let them know that one of there transformers was hit by lightening, next you will need to know who else is powered by that transformer if any body else is. some places have a transformer on each home, depending on where you liveif somebody else shares the transformer follow the lines to there house and ask them if they have the same probIf so its the power company's problem and they will likely replace it. If its shared and the other person does not have the same problem or If you are on the only one on the transformer then you will need to hire an electrician to inspect for damage and repairs.
Q:Transformers have any way of cooling
Selection of strong air-cooled cooling mode, when the pump and fan lose power supply, the transformer can not run for a long time. Even if no load can not run for a long time. Therefore, two separate power supplies should be selected for use by the cooler.     When the oil-water cooling method is selected, it can not be operated when the pump cooling water loses power. The power supply should select two independent power supplies.
Q:Confused with transformer.?
It looks like you MAY have an auto-transformer, ie only one winding. Off hand, I would say the white is supply live and blue the common return. If you measure the DC resistance of White to all the others and record reading. Then red to all others as above and same with brown, yellow and blue. The pair with highest reading Should be the primary, it doesn't really matter which is live or neutral, as long as you take the return of the secondary to the neutral. The other 3 wires will give you 3 different voltages with respect to neutral, however the EHT in the serial No. May indicate Extra High Voltage, which is not 220v. by any stretch of the imagination. Is there no information whatsoever on the transformer itself? Clear as MUD I know, but I'm not good at explaining things. Your meter should be at the lowest range, as this is DC resistance you are measuring, not AC.
A transformer can be used as step-up or step-down, but normally use is as step-down so b. for the first question. Second question, the humming is caused by d. and will be at the frequency of the supply. Third question would be b. or d. since the only current drawn on no-load is the magnetising current for the core.
Q:Tesla coil transformer?
I say buy one or find one that you can have for free. Whenever I build a Tesla Coil, I consider the transformer the first line of protection for pretty much any electronic circuitry on the same mains line because it acts to isolate the Tesla coil. I would never operate a home built transformer off of mains power. However, if your insistent on doing that, all I can do is advise you to get the resistance of your primary right, otherwise your transformer will quickly melt. An easier solution would be to find and contact neon sign businesses around your area. When they have to discard an old (but not necessarily bad) transformer, it COSTS them money because the EPA requires special handling because some can contain hazardous materials. Explain what your doing and if youre lucky, youll find a tech who is open to giving you a few of their junk stock.
Q:i have a 12 - 220v transformer, the primary makings are 12v, 0v. 12v is this a 24v center tapp transformer?
confident. you will incur larger losses than if the transformer became particularly designed for 220 V, inspite of the undeniable fact that it is going to in all possibility be insignificant. be conscious, inspite of the undeniable fact that, that attempting the different (making use of a transformer designed for 220 V in a 440 V circuit) might _not_ paintings, because of the fact the conventional might overheat.

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