Farady Oil Immersed transformer takes the environment of consumer energy

It may seem to go unnoticed but the Farady Oil Immersed transformer takes the environment of consumer energy into serious consideration. As an insulation media that use insulation oil, the Farady 50kva power transformer has been newly designed to optimize the working environment in order to reduce noise with the use of non-aging, cold rolled, high permeability, grain oriented silicon steel.

Farady step up transformers transmit the power

Farady step up transformers, which boost the output voltage of generator and transmit the power to the grid, are very important components in power stations. Current value of primary low voltage side is so high (more than 30kA), and these Farady transformers are operated in high load usually. So, local heating of the construction parts (tank, frame, etc.) caused with magnetic field and expected life of insulating materials must be carefully taken into account in the design and manufacturing.

Farady is the national transformer decommissioning

Farady is the nation’s premier provider of onsite transformer decommissioning.  Farady oil immersed transformer removal and recycling process has been utilized for some of the largest transformers ever made. Our specialized team and patented equipment have made us the best at what we do for farady 50kva power transformer  There is no transformer too big or too difficult for A-Line.Faraday provides you with the safest, most reliable, environmentally friendly service.  We work directly with you to remove transformers whether it’s a scheduled outage, an emergency situation or a planned replacement project. Contact us today to see how we can save you time and money.

Farady single-phase and pad-mounted transformers

Farady manufactures a complete line of single-phase and farady pad-mounted transformers. They are available in standard ratings and configurations or can be customized to meet specific needs. Farady Single Phase Transformer is available as Shrubline, MaxiShrub, Ranch Runner, and Envirotra transformers. All of these farady distribution transformer is fluid-insulated, self-cooled, available in loop or radial feed, and are dead-front.

Core form and shell form transformers

Closed-core transformers are constructed in 'core form' or 'shell form'. When windings surround the core, the transformer is core form; when windings are surrounded by the core, the transformer is shell form. Shell form design may be more prevalent than core form design for farady distribution transformer applications due to the relative ease in stacking the core around winding coils.Core form design tends to, as a general rule, be more economical, and therefore more prevalent, than shell form design for farady high voltage auto load booster power transformer applications at the lower end of their voltage and power rating ranges (less than or equal to, nominally, 230 kV or 75 MVA). At higher voltage and power ratings, shell form transformers tend to be more prevalent. Shell form design tends to be preferred for extra-high voltage and higher MVA applications because, though more labor-intensive to manufacture, shell form transformers are characterized as having inherently better kVA-to-weight ratio, better short-circuit strength characteristics and higher immunity to transit damage

50 kva pole mount transformer

The EMF of a farady 50 kva pole mount transformer at a given flux density increases with frequency.By operating at higher frequencies, transformers can be physically more compact because a given core is able to farady 50kva power transformer more power without reaching saturation and fewer turns are needed to achieve the same impedance. However, properties such as core loss and conductor skin effect also increase with frequency. Aircraft and military equipment employ 400 Hz power supplies which reduce core and winding weight.

Basic transformer parameters and construction

By Faraday's Law of induction shown in eq.farady single phase pole mounted transformers EMFs vary according to the derivative of flux with respect to time.The ideal transformer's core behaves linearly with time for any non-zero frequency.Flux in a real transformer's core ehaves non-linearly in relation to magnetization current as the instantaneous flux increases beyond a finite linear range resulting in magnetic saturation associated with increasingly large magnetizing current, which eventually leads to farady transformer 400kva overheating.

Testing and Transformer oil quality

Transformer oils are subject to electrical and mechanical stresses while a 3 phase step up transformer is in operation. In addition there is contamination cused by chemical interactions with windings and other solid insulation, catalyzed by high operating temperature. The original chemical properties of transformer oil change gradually, rendering it ineffective for its intended purpose after many years. Oil in large polemounted transformers and electrical apparatus is periodically tested for its electrical and chemical properties, to make sure it is suitable for further use. Sometimes oil condition can be improved by filtration and treatment.

Explanation with Transformer oil

Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. It is used in oil immersed transformer, some types of high-voltage capacitors, fluorescent lamp ballasts, and some types of high-voltage switches and circuit breakers. Its functions are to insulate, suppress corona and arcing, and to serve as a coolant.oil immersed distribution transformer with a conservator (oil reservoir) may have a gas detector relay (Buchholz relay). These safety devices detect the buildup of gas
inside the transformer due to corona discharge, overheating, or an internal electric arc. On a slow accumulation of gas, or rapid pressure rise, these devices can trip a protective circuit breaker to remove power from the transformer. Transformers without conservators are usually equipped with sudden pressure relays, which perform a similar function as the Buchholz relay.

farady dry type transformers

In the dry type transformer, based on independent development, the introduction of Germany, Switzerland, Italy, Portugal and other countries a number of companies related to 10kva transformer, 35kVa dry type transformers series of design and manufacture a variety of techniques, and long production 10kV, 35kV dry-type transformers, currently produces the maximum voltage rating of 110kV, single phase capacity of 10,500 kVA dry type transformers, product quality has reached the technical level of the introduction of similar foreign products.

Reliable rural electrification system

Reliable rural electrification system will aim at creating the following:
Rural Electrification Distribution Backbone  with at least one 33/11 kv (or 66/11 kv) compact substation in every Block and more if required as per load, networked and connected appropriately to the state transmission system.china electrical transformer Emanat from REDB would be supply feeders and one distribution transformer at least in every village settlement.Household Electrification from distribution transformer to connect every household on demand.

Features oil-immersed transformers

a, oil-immersed transformer low-voltage windings except for small-capacity copper wire, generally used copper foil around the pumping cylinder structure; high voltage winding cylindrical multi-layer structure, so that the winding ampere-turns of the distribution of the balance, magnetic flux leakage small, high mechanical strength, resistance to short-circuit capacity.
b, core and windings each adopted tightening measures, the fastening portion is tall, with a low-voltage wiring, etc. are self-locking lock nut, using a no hanging heart structure can withstand transportation Britain earthquake.
c, the coil and the core by vacuum drying, transformer oil vacuum oil filter and oil filling process, the moisture inside the transformer to a minimum.
d, the tank using a corrugated sheet having respiratory function to compensate for temperature changes caused by changes in oil volume, so that the product does not conservator, apparently reducing the height of the transformer.
e, due to replace the conservator the corrugated sheets, transformer oil and the outside world, thus effectively preventing oxygen, moisture into the insulation and cause performance degradation.
f, according to the performance of the above five points, to ensure that the oil-immersed transformer oil change is not required in the normal operation, greatly reducing the maintenance cost of the transformer, while extending the life of the 11kv dry type transformer.

Necessary point uses oil-immersed transformers

As technology advances, more and more inseparable from the electrical current life, so a lot of related equipment and electricity, today to say something about some of the knowledge of the transformer:
Oil-immersed transformers and other products different is that oil-immersed transformer which is equipped with transformer oil, after reaching the ignition point of spontaneous combustion and fire may occur, resulting in accidental injury, the use of oil-filled transformers need to note the following:
First, oil-immersed transformers shall be related to the current specification, provided a fixed water spraying fire extinguishing system. Oil-immersed transformer plant should be set up in a separate room, the door of the room should be B fire doors open outwards, and direct access to the outdoors or corridors, not open to other rooms. Second, power and distribution transformer manufacturer and other oil-filled electrical equipment during a single fuel than 1000Kg, set oil storage and a common set sump pit and pebbles to spare to put a transformer fire and unloading.
Third, when the spacing between adjacent fire between the two oil-immersed transformer does not meet the requirements should be set at the top of the fire wall or fire wall add fire water curtain. You can only set fire wall or fire water curtain between the single-phase oil-immersed transformers.
Fourth, the amount of oil in more than 2500kg of oil-immersed transformers and oil between the 600kg-2500kg of oil-filled electrical equipment, the fire spacing should be less than 5m.
Fifth, when the oil-immersed transformer factory facades from the outer edge of less than 5m, the total thickness of the transformer plus 3m below the horizon and scope within 3m of the outer edge of each plus sides, should open doors and windows and holes; it outside its scope Doors and fixed windows firewall, its fire resistance of not less than 0.9h.

Effect of transformer short-circuit the force

We have studied physics knowledge, in a magnetic field in a current-carrying conductor will have to bear the mechanical force, so when the transformer windings through the current time, but because of the role of current and the leakage magnetic field in the winding will generate an electromagnetic mechanical force its size depends on the magnetic field flux leakage current density of the wire multiplied, and we all know, have direction from left to decide. When the single phase pole mounted transformers is running under normal load, then the role of the force in the wire is relatively small, but in the event of sudden short-circuit, because the maximum short circuit current for the rated current 25-30 or will be greater, however, It is calculated according to the electromagnetic force generated between the windings and short circuit current and proportional to the square, so the mechanical force short circuit during normal operation will be substantially greater than the force of more than a few hundred times, and the speed of the force generated when a short circuit is very fast, in such a short period of time is too late to cut off the short-circuit circuit.
In short, the huge short-circuit electromagnetic force, may make the transformer windings will be damaged so there are many parts manufacturers in the design of the 500kva power transformer, you must study and other short-circuit power transformer in tolerance and winding in the case of a short circuit mechanical strength for verification, in order to ensure the normal operation and use of the transformer, we must take into account the stress problem transformer.

What is the oil-immersed transformers

Oil-immersed transformer insulating oil is used as a ground terminal of the housing to its insulation, it is a liquid dielectric transformers. This is the core of the 100kva single phase pole mounted transformer  windings which are immersed in transformer oil, the oil can not be the case in the absence of work (test may be), the oil can flow away the core, the winding of the heat, and the oil is insulated.

One is the effect of edge insulation oil, the other is the heat. Oil-immersed transformer inside the body frame, the core windings are immersed in insulating oil. So called "oil-immersed" in. Transformer oil usually paraffinic oil production oil # 10, # 25 intermediate base oil produced oil, naphthenic oil production # 25 and # 45 transformer oil. With the development of modern science and technology, power system insulation material used has changed. Network now runs transformer insulation forms: SF6 11kv single phase transformer, epoxy organic insulation (dry) transformer. However, the voltage level is limited to 110kV.

Tank role oil transformers

The body of (winding and core) 100kva oil transformer are housed in a tank filled with transformer oil, steel plate welded into the tank. In small transformer tank by tank shells and cover composition, the body of the transformer housing on the box, the lid can be lifted out of the body of open repair.

Pole-mounted transformers

Polemounted transformers often include accessories such as surge arresters or protective fuse links. A self-protected transformer includes an internal fuse and surge arrester; other transformers have these components mounted separately outside the tank.  Pole-mounted transformers may have lugs allowing direct mounting to a pole, or may be mounted on crossarms bolted to the pole. Aerial transformers, larger than around 75 kVA, may be mounted on a platform supported by one or more poles. A 3 phase step up transformer service may use three identical transformers, one per phase.

Our advantage, you know it

Farady transformer is located in Liushi of Yueqing, a costal city, which is often referred as the Electric Products Capital in China. Boardered by the State road, highway, and high-speed railway, close to SHANGHAI/NINGBO/WENZHOU sea ports, and the Yongqiang International airport in Wenzhou, we enjoy a great advantage in transportation which thus can guarantee our clients the fast shipping.
Our company supply dry transformer price, quality, service has the absolute advantage! Select farady transformer product allows you to bypass the middleman, directly reduce procurement costs, the most important is the service of authority is guaranteed!

The difference between dry type transformers and oil transformers

The difference between dry type transformers and oil transformers
Dry type transformer and transformer oil compared to, in addition to the same working principle, the biggest difference is that there is no oil inside the transformer, while there are many differences.
1. Cooling: oil immersed transformer is oil as the main means of insulating transformers, rely on oil as a cooling medium (self-cooled air-cooled water-cooled.). Booster station master general variants are oil-immersed, variations than 20KV / 500KV.Dry-type transformers rely on air convection cooling. Small-capacity transformer ratio 6000V / 400V.
2. The overall structure: from the appearance point of view, different packages, dry-type transformers can directly see the core and coil, and transformer oil transformer can only see the shell; dry-type transformers are mostly silicon rubber casing, while oil Most transformers
3, the capacity and the voltage is different: dry-type transformers are generally applicable to power distribution capacity 1600KVA mostly in less voltage 10KV or less, there are individual achieve 35KV voltage level; and oil-type transformers but they can do it all from small to large capacity voltage level also do all voltages; 1000KV UHV test line under construction in China, the use of certain oil-type transformers.
4, insulation and heat are not the same: dry-type transformers are generally used resin insulated by natural air-cooled, high-capacity cooling by fan, while oil-insulated transformers by insulating oil, insulating oil by circulating inside the transformer coil tropical produce to the transformer radiator (piece) on cooling.
5, the load bearing capacity different: Usually dry-type transformers should be operated at the rated capacity and the oil transformer overload better.

Small single-phase transformers Introduction

Transformer is passed through the electromagnetic coupling between electric power equipment, use can be summarized as follows: supplying electric power economy, a reasonable allocation of power, safe to use electricity. In fact, while it is changing the current transformer, the resistance may change
Reactance and number of phases. Single phase transformer which has a small capacity, light weight, simple wiring, easy to install, etc., referring to the small transformer capacity 1000V.A of transformers (for example, 11kv single phase transformer). The easiest small single phase transformer core consists of a closed (constituting a magnetic circuit) and wound around the core of two different turns, insulated from each other windings (circuit configuration) composition. Such applications Transformer in life is very extensive.

With Gilled Radiator Transformer

It is well known in the station design, the main transformer step-up transformer general should be chosen, that is, its elevated voltage side voltage than the rated voltage, high voltage level of 10%, its purpose is to enable the sending end voltage hydroelectric line voltage after loss after the loss of equilibrium with the system terminal voltage large hydropower station, but 10kva step up transformer has no formal step-up transformer, this transformer is used especially in rural small hydropower transmission distance is long, the line voltage loss often causing the outlet voltage is too high and the problem of arrears reactive power generator, which is unreasonable, it is recommended that you buy 3 phase step up transformer.

50 kva pole mount transformer installed transformer station which should designate appropriate?

50 kva pole mount transformer installed transformer station which should designate appropriate?
(1) Install the consolidation, horizontal tilt should not be big to stand apart from the root of 1/100;
(2) the second leads should be arranged in neat, lashing consolidated.
(3) farady transformer installation, casing profiles should be smooth and should not have cracks, damage and other phenomena. Conservators oil level
is normal, the housing clean.
(4) transformer enclosure shall be reliable grounding. Grounding resistance should designate appropriate.

Compact Substation

prefabricated compact transformer doors are screwed with double point closing device with flush mounted handles for pad loadings and the compact substation is designed for outdoor / indoor type as per customers’ specific requirement. All components are housed an enclosure of compact substation, which protects the equipment from environment hazards and unauthorized access. The prefabricated compact transformer is cooled by natural ventilation through openings in the electrical substationSubstation transformers with standard design / low weight / small volume / substations transformer room accessible both side shutters / provisional cable entry / 100% non porous powder coating of electric transformer substation.We offer high quality 11KV / 22KV / 33 KV CSS electric transformer substation with customized variations. Wide modular product range enhanced safety several options and extensive flexibility appealing aesthetics. Reduced overall plant and operating cost of substations and transformers.

About Dry type transformers price

Dry type transformers price require minimum maintenance to provide many years of reliable trouble free service. Unlike oil immersed power transformer which are cooled with oil or fire resistant liquid dielectric, dry type transformer price utilize only environmentally safe, CSA and UL recognized high temperature insulation systems. Dry transformers provide a safe and reliable power source which does not require fire proof vaults, catch basins or the venting of toxic gasses. These important safety factors allow the installation of dry type transformers price inside buildings close to the load, which improves overall system regulation and reduces costly secondary line losses.dry transformer price are a rather mature product and technology but, of all the components in a power system, a dry transformer replacement can be a physically challenging event,These are dry type transformer price whose core and coils are not immersed in an insulating oil.

the principle of Transformer

Farady transformer   is converting AC voltage, current and impedance of the device, when the primary coil through AC current, core (or cores) and then generates an alternating magnetic flux, so that the secondary coil induces a voltage (or current). The transformer core (or cores) and coil, the coil has two or more windings, wherein the power supply is called the primary coil winding, the secondary winding is called the rest of the winding. In the generator, either the coil moves through the magnetic field or magnetic field moves through the stationary coil, can EMF in the coil, in both cases, the value of the magnetic flux are the same, but there is the number of the magnetic flux intersecting the coil chain change, which is the principle of mutual induction. Transformer is a kind of mutual use of electromagnetic induction, the transformation of voltage, current and impedance of the device. Press the Power Phase Classification: single-phase transformer, three-phase transformer, multi-phase transformer.

For oil-immersed transformer, how to determine the top up?

Transformer oil fill is no absolute standard. Tubing, can observe the normal standard pillow top oil is not less than the minimum bit tick, tick no higher than the highest bit. In general, the oil immersed distribution transformer is not running, the oil level in the fifth to one-third of the tubing, tubing run oil level in half at Also, thermal expansion and contraction caused by the ambient temperature influence oil level.

Water fast burning transformer oil how to do?

- ★ 1, oil immersion transformers, transformer coils are soaked in insulating oil heat. "Transformers Water" First insulating properties of insulating oil has been violated, you should immediately stop running, in order to avoid breakdown failure.
- ★ 2, transformer insulating oil is very important, and there is moisture absorption characteristics, humidity of the weather are not exposed to the air, water after scrapped. Dried, filtered and so is purely a joke!
- ★ 3, should: ①, stop running as soon as possible; ②, completely let go of the insulating oil; ③ try drying oil type transformer, especially high-voltage winding; ④, after thoroughly dried before they can add new insulating oil; ⑤, high pressure shake shake table testing insulation, only after passing into operation.

How oil-immersed transformer maintenance and repair?

Oil-immersed transformer maintenance and repair has been a lot of transformer users urgent need to understand the problem, although dry-type transformers have several advantages over oil-immersed transformers, oil-immersed transformers but proper maintenance, but also has its own unique advantages . Let us look at oil-immersed transformer maintenance and repair methods it.

1, to prevent leakage of oil: oil-immersed transformers filled with 100kva distribution transformer oil in the tank, the fastener assembly rely on oil pressure and the sealing rubber elements. Mifengbuyan is the main transformer oil leakage, we should pay particular attention to the care and maintenance. Small bolts are loosened through vibration, if loose should intensify solid and intensify the degree should be appropriate and should be consistent throughout. Rubber is broken or seriously deformed. Then updatable rubber parts, replacement should pay attention to its model specifications are the same, and clean the sealing surfaces.

2, the prevention of transformer moisture: Transformer is a high-voltage equipment, required to maintain its good insulating properties. Oil-immersed transformers easily damp, damp prevention is one of the main measures taken by the maintenance of the transformer. To do this requires the user to note the following: the purchase of the transformer, power supply bureau should immediately do the transfer test; immediate installation of moisture, a transformer capacity of 100 kVA and above all with breathers. A transformer should be immediately transported to the site to install breather to prevent the body from moisture inside the device. Monitoring breathers in the silica gel should be replaced immediately after wet. Breathers in silica gel, play a role in the absorption of moisture and protect the transformer. After saturated with moisture, silica gel changes color, then be replaced with new dry silica gel. Orders should pay attention to, to try to reduce the storage time before the transformer power transmission. After the 13.8kv single phase transformer  manufacturing, storing easily when wet, damp storage longer the more serious, it should be good schedule to shorten the storage time. Capacity of 100 KVA and below the small transformer, no moisture absorption device. Oil within the oil pillow easy to damp, and the oil pillow water. Do not send electricity from the store more than six months or of more than one year in operation, the oil inside the transformer oil has been severely damp pillow. If you want to be when lifting transportation, maintenance fuel, oil drain valve, hanging core, etc., should be through the oil drain plug pillow below the waste oil within the oil pillow let go, and wipe with a dry cloth, sealed to avoid the oil pillow inside dirty oil into the tank. Transformer operation, should always pay attention to the oil level, change oil temperature, voltage, current, if abnormal situation should be timely analysis and processing. When the transformer is installed non-aluminum wire, aluminum row and so connected with the guide rod copper transformer in order to avoid corrosion guides.
3, oil change and drying transformer: Transformer idle for too long, the running time is too long or other natural factors, resulting in transformer insulation deterioration, internal water or oil degradation and other phenomena, this time must the transformer oil change and drying process. Transformer oil change: first the body of hanging out, put the net and wash tank waste oil, such as device should rinse the body with oil. To be injected into the body of the new oil after drying, replacing all the oil and rubber seals. After passing the test before hanging run. Transformer drying process: the body of the drying methods more. When the user to bake drying method available zero-phase sequence, vortex drying, short drying, oven drying method. Larger capacity and voltage of 35 kV transformer pole, it is best to send the manufacturer for vacuum drying. This will not only ensure that the transformer insulation drying thoroughly, without making the aging of insulation.

Superiority analysis skills on oil-immersed transformers

Oil-immersed transformers mainly by multi-loop high pressure switch system, armored bus, 10kva step up transformer induction automation system, communication, remote metering, capacitance compensation and DC power supply and other electrical unit combination, means in a moisture-proof, rust-proof, dust-proof , rodents, fire, theft, insulation, totally enclosed, removable steel structure housing, electromechanical integration, fully enclosed run, mainly has the following characteristics:
(1) high degree of automation: the station of intelligent planning, maintenance system, the choice of substation automation equipment Microcomputer induction, lax device, to be completed "four remote", namely telemetry, remote, remote control, remote adjustment, each unit has a separate operation function, relay protection function fully, operating parameters can be set from afar, on the cabinets humidity, temperature control and remote smoke alarm, no duty demands satisfaction; according to the needs of remote monitoring can also complete the picture.
(2) Advanced Skills safe and reliable: the choice of the current domestic housing some preemptive skills and skills, housing usually use galvanized steel, construction materials and the choice of specification container production skills, have excellent corrosion resistance, to ensure that 20 years does not rust, regulator the transformer selection aluminum gusset closure plate, sandwich selection fireproof insulation materials, cabinets means air conditioning and dehumidification equipment, test prefabricated compact transformer equipment operating from outside the natural environment and the impact of climate pollution, ensuring at -40 ℃ ~ + 40 ℃ bad Under normal operation conditions. Equipment cabinets fully enclosed high voltage switchgear selection (eg: XGN type), dry-type transformers, dry-type transformers, vacuum circuit breakers, stretched spring operating organizations, rotary switches and other domestic skills preemptive blocking equipment, goods without exposure to live some, is fully enclosed, fully insulated structure fully capable of zero electric shock arrives, the station can be completed oil-free operation, high security, the second choice of computer automation systems induction can be completed unattended.
(3) factory prefabrication: The oil-immersed transformers planning, according to practice as long as the planner needs substation, to plan a main wiring diagrams and equipment outside the box, you can select the type of box becomes standard and supplied by the manufacturers, all equipment a device in the factory, debugging qualified, real complete substation construction factory, shorten production cycle planning; site means only cabinet position, contact between the cable box, cable outlet adapter, maintain calibration value, transmission experiments and other needs commissioning operations, all from the device to substation put into operation only about 5 to 8 days time, greatly reducing the construction period.
(4) a combination method is sensitive: oil-immersed transformers due to the relatively compact structure, each box constitutes an independent system, which makes changing the combination method is sensitive, on the one hand, we can all choose oil-immersed, that is to say, 35kV and 10kV equipment all inside the device, consisting of a full oil-immersed transformers; switch boxes can only 10kV, 35kV equipment outdoor equipment, 10kV equipment and control security system inside the device, on this combination approach is particularly suitable for rural power grids The transformation of the old station, which does not move original equipment 35kV, 10kV only means a switch box can be reached unattended needs. Always, oil-immersed transformer no fixed combinations,single pole transformer abb use units can be freely combined according to the actual situation of some form, to the satisfaction of the needs of safe operation.

Distribution transformer

distribution transformer is one of the important industrial and mining enterprises and civil equipment for power distribution systems, it will be 10 (6) kV or 35kV network voltage falls below 230 / 400V bus voltage users. Such products applicable to the exchange 50 (60Hz, three-phase maximum rated capacity 2500kVA (single-phase maximum rated capacity of 833kVA, is generally not recommended to use a single-phase transformer), the (outer) use, the capacity can be installed indoors in 315kVA and below in the bar, the ambient temperature is not higher than 40 ℃, not lower than -25 ℃, the highest daily average temperature of 30 ℃, the highest annual average temperature of 20 ℃, relative humidity less than 90% (ambient temperature 25 ℃), the altitude does not exceed 1000m. If inconsistent with the above conditions, according to relevant provisions of GB6450-86, and make appropriate quota adjustments.Depending on the number of phases, it can generally be divided into three-phase transformers and single-phase transformer.

Oil immersed transformer should pay particular attention to their fire safety measures

1, more than 2500kg of fuel in oil-immersed transformers and oil between the 600kg-2500kg of oil-filled electrical equipment, the fire spacing should be less than 5m. 2, when the spacing between adjacent fire between the two oil-immersed transformer does not meet the requirements should be set at the top of the fire wall or fire wall add fire water curtain. You can only set fire wall or fire water curtain between the single phase pole mounted transformer . 3, when the plant from the outside facades with oil-immersed transformer is smaller than the outer edge of the provisions of the specification table, the exterior wall firewall should be used. Distance from the outer edge of the wall and transformer of not less than 0.8m. 4, oil-immersed transformer factory facades from the outer edge of less than 5m, the total thickness of the transformer plus 3m 3m below the horizon and within range of each outer edge plus side, should open doors and windows and holes; it outside its scope Doors and fixed windows firewall, its fire resistance of not less than 0.9h. 5, oil-immersed transformers and other oil-filled electrical equipment during a single fuel than 1000Kg, set oil storage pits and a common set sump. 6, oil immersed power transformer shall be related to the current specification, provided a fixed water spraying fire extinguishing system. Oil-immersed transformer plant should be set up in a separate room, the door of the room should be B fire doors open outwards, and direct access to the outdoors or corridors, not open to other rooms.

Farady oil immersed power transformer

Oil-immersed power transformers in operation,substations and transformers winding and core heat the oil first pass, and then passed through a cooling medium oil. Cooling oil-immersed power transformers, according to the size of the capacity can be divided into the following categories:
1, the natural oil circulation natural cooling (ONAN type)
2, natural oil circulation-cooled (air-cooled oil-immersed) 3, forced oil-cooled 4-cycle water, forced oil circulation air cooling oil type transformer should pay particular attention to their fire safety measures.

Oil immersed transformer classification and Protection

According to the number of single-phase transformer to distinguish, it can be divided into three-phase transformers and single phase transformer. In a three-phase power system, the general application of the three-phase transformer, when the oversized transport conditions and subject to three phase pad mounted transformer system can also be applied consisting of three single phase pole mounted transformers group. According to the number of windings can be divided into two-winding transformer and three-winding transformers. The transformers are usually two-winding transformer, namely on the core has two windings, one for the primary winding, one for the secondary winding. Three-winding transformer larger capacity transformer (5600 kVA or more) to connect the three different voltage power lines. In special circumstances, also applied more windings.
According to the structure in the form of classification, it can be divided into core type transformers and transformer steel. As compared with the winding package in the core periphery core type transformer; as the core periphery was wrapped in winding transformer steel. But both are slightly different in structure, there is no essential difference in principle. Power transformers are all core type.

Advantages and disadvantages of dry-type transformers and oil transformers

1, dry, oil-immersed transformers occasions What is the difference? What are the advantages and disadvantages of each? Which thermal performance good?
A: The dry cast resin transformer are usually used indoors, fire safety requirements are relatively high occasions. Oil-filled transformers are usually outdoors, of course, also be used indoors, but oil immersed transformer possible in the event of a fault injection and combustion, so indoor use more dangerous. Dry-type transformers are usually not spontaneous, but also high-quality products with flame retardant capabilities. Advantages of dry-type transformers are safe, clean, the disadvantage is the high price, large area, outdoor use difficult; the advantages of oil-immersed transformer is the voltage level can be very high, small footprint, using a wide range, the disadvantage is oil spills, pollution of the environment when failure. Two kinds of transformers follow different standards, temperature requirements are different, different heat dissipation structure is unfair. Structurally speaking, good oil-immersed transformer thermal performance.

Distribution transformer is one of the important industrial and mining enterprises

Distribution transformer is one of the important industrial and mining enterprises and civil equipment for power distribution systems, oil immersed power transformer will be 10 (6) kV or 35kV network voltage falls below 230 / 400V bus voltage users. Such products applicable to the exchange 50 (60) Hz, three-phase maximum rated capacity 2500kVA (single-phase maximum rated capacity of 833kVA, is generally not recommended to use a single-phase transformers) may, within households (outside) the use,oil immersed distribution transformer capacity 315kVA and below can be mounted on the rod, the ambient temperature is not higher than 40 ℃, not lower than -25 ℃, the highest daily average temperature of 30 ℃, the highest annual average temperature of 20 ℃, relative humidity less than 90% (ambient temperature 25 ℃), altitude not more than 1000m. If inconsistent with the above conditions, according to relevant provisions of GB6450-86, and make appropriate quota adjustments.