GCK Low-voltage Draw out Switchgear,Low Voltage Switchgear,Draw out Switchgear,Circuit Breaker Switchgear

High and Low Voltage Switchgears

GCK series low voltage draw out switchgear is applicable for three phase four wire/five wire AC power system with rated operation voltage 380V

Product Description

GCK series low voltage draw out switchgear is applicable for three phase four wire/five wire AC power system with rated operation voltage 380V, used for electric power receiving and feeding, reactive power compensation, electric energy calculation, lighting and motor centralized control at power plant, substation, mine enterprises, high buildings.

This product complies with the Standards GB7251 Low-voltage Switchgear and Control Equipment, JB / T9661 Low-voltage Draw out Type Switchgear, IEC 60439-1 Low - voltage Switchgear and Control Equipment.

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GGD Low Voltage Fixed-mounted Switchgear,Fixed mounted Switchgear,Low Voltage Switchgear,High and Low Voltage Switchgears

GGD series low voltage switchgear is used for power lighting

Product Description

GGD series low voltage switchgear is used for power lighting, power transformation, distribution and control for AC distribution system with rated frequency 50HZ and rated operation voltage 380V, rated current up to 3150A at power plant, substation, mine enterprises and other users.

It owns high breaking capability, rated short time withstand current can be up to 50KA, circuit layout is flexible and combination is convenient and so on. It is one of typical products for assembled type, fixed panel switchgear in domestic.

This product complies with the national standards GB7251 Low-voltage Switchgear and Control Equipment, international standard IEC 60439 Low - voltage Switchgear and Control Equipment.

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KYN28A-12 (GZS1-12) Model Indoor AC Metal Clad Intermediate Switchgear,KYN28A-12 (GZS1-12) Indoor AC Metal Clad Intermediate Switchgear,Circuit Breaker Switchgear,High and Low Voltage Switchgears,Indoor AC Switchgear

Product Description

KYN28A-12 (GZS1-12) Indoor AC Metal Clad Intermediate Switchgear, this product is suitable for three phase AC power system with rated voltage 12KV and rated frequency 50Hz, is used for receiving and distributing the power energy, to control, protect and monitor the circuit.

Product Features

Meet the standard: GB3906-97 3-35KV AC Metal-enclosed Switchgear, GB11022-89 High-voltage Switchgear General Technical Conditions, IEC298 (1990) AC Metal-enclosed Switchgear and Control Equipment With Rated Voltage Above 1kv and or Below 50kv , DL404-97 Order Technical Conditions for Indoor AC High Voltage Switchgear Cabinet.

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XGN2 Type Modular High Voltage Switchgear,High Voltage Switchgear,High and Low Voltage Switchgears

XGN2 type modular high-voltage switchgear cabinet is applied to receive and distribute the electrical energy in three-phase AC power system with rated voltage 3, 6, 10KV and rated frequency 50HZ

Product Description

XGN2 type modular high-voltage switchgear cabinet is applied to receive and distribute the electrical energy in three-phase AC power system with rated voltage 3, 6, 10KV and rated frequency 50HZ, especially for the frequently operated occasion. Its busbar system is a single busbar (which can derive the single busbar with bypass and double busbar structure). The switchgear cabinet is in line with the requirements of the National Standards GB3906 3-35KV AC Metal-enclosed Switchgear and the international Standard IEC298, also there are proposed "five anti" interlocking functions such as anti-breaking and closing by mistaken for circuit breaker, anti-breaking and closing disconnector switch with load, anti-breaking and closing grounding wire/switch with load, anti closing circuit breaker/disconnector switch with grounding wire/switch, anti entering charged interval by mistaken.

Product Features

The main switch of the switchgear applies ZN28A-10 series vacuum circuit breakers, equipped with CD117 series of electromagnetic operating mechanism and CT19 series of spring operating mechanism. Using GN-30 rotary isolating switch.

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ZBW Type Prefabricated Substation,mobile transformer substation,distribution transformer substation,power substation transformer

ZBW Type Prefabricated Substation

ZBW packaged substation, also known as prefabricated substation. It meet GB17467-1998 “high and low voltage prefabricated substation” and IEC1330 standards etc. As a new type of power supply and distribution device, has more advantages than traditional civil substation.

Product Description

ZBW packaged substation, also known as prefabricated substation. It meet GB17467-1998 “high and low voltage prefabricated substation” and IEC1330 standards etc. As a new type of power supply and distribution device, has more advantages than traditional civil substation. Such as smaller size, smaller floor area, compact structure, flexible movement, which greatly reduce period and area for construction in site, also the construction cost. Meanwhile, prefabricated substation is easy to be installed at site , can realize rapid power supply, almost maintenance free. Most particularly, it is placed at load center so that reduce power loss effectively to improve power quality, enhance the reliability of power supply and also is significant for distribution network transformation.

This substation fulfills the functions such as transformation of energy, distribution, transmission, metering, compensation, system control, protection and communication.

The ZBW prefabricated substation is composed by the high-voltage switchgear, low-voltage distribution panel, distribution transformer and enclosure. The high-voltage switchgear adopts air load switch and the transformer is dry-type or oil immersed type. The substation adopts good ventilation structure with elegant appearance and good heat-insulating performance. The temperature rise of the compartments caused by the outdoor solar radiation can be reduced to within the lowest limits on account of the upper and lower ventilation windows. The forced ventilation device and the temperature auto-controlled device should be installed in the substation. The systems of control, protection, live display and the lighting are equipped in each separate unit.

Product Features

Application

The type of small unattended substation is applicable for voltage up to 35KV, with main transformer capacity up to 5000KVA, is widely used in urban industrial substation, 10KV ring network system, rural power grid 35KV substation and other occasions.

Main Function

This substation fulfills the functions such as transformation of energy, distribution, transmission, metering, compensation, system control, protection and communication.

Main Characters

The primary and secondary equipments are pre-installed in the cabinet which is removable, full-sealed, automatic temperature controlled, antiseptic, damp proof and rustproof. It only needs to be installed on the cement foundation after arriving at the site. This kind of substation have the advantages of low investment, short construction period, small occupation area and easy environmental coordination.

Model and Meaning

Technical Parameter of ZBW Prefabricated Substation

Technical Parameters

Notes to the ordering of the Prefabricated Substation

1. High voltage:

Way of incoming: terminal type, ring type or double power in.

Whether there is high voltage metering or not. If yes, the position of the meter(front of the switch or behind the switch), the requirement of the meter gauge and its supplier is designated or not.

Type of the HV switch, one way is using the combination with high voltage vacuum load switch and the fuse, which is mainly used and economical; the other is adopting the disconnector switch and the vacuum breaker, which is used for the high capacity transformer and with higher price.

2. Transformer: the transformer type, the connection group symbol, capacity and the impedance voltage of the transformer.
3. Low voltage:

 Switch Supplier.

 The number of the outgoing ways and the rated current value of each outgoing switch.

 Whether there is the compensation or not, if yes, the capacity of the compensation.

 Whether with the metering or not. If yes, the position is necessary.

4. Type of the busbar(copper or aluminum)
5. Layout of the substation(whether with the operation corridor or not)
6. The material of transformer enclosure: composite board (commonly used), steel plate, stainless board or cement.
7. Delivery Period for prefabricated substation:

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SC(B)10 Series Resin-insulated Dry Type Transformer,cast resin transformer,dry-type transformer，cast resin dry transformer，step up dry transformer

Dry Type Transformer

Flame retardant, non-pollution, it can be installed directly in the load center. Maintenance-free, easy to be installed, low operating costs.

Product Features

Function Characteristics:

• Flame retardant, non-pollution, it can be installed directly in the load center.
• Maintenance-free, easy to be installed, low operating costs.
• The enclosure can be of Good moisture resistance, transformer can be put into operation without pre-drying under 100% humidity in the normal operation.
• Low loss, light weight and small volume, low noise, good dissipation of heat, it can be 150% rated load operation under forced air cooling conditions.
• Equipped with a complete temperature protection control system to provide reliable protection for the safe operation of transformers.
• High reliability. The results of checking for the products that has been put into operation show that the reliability index has reached the international advanced level.

Structural Characteristics:

Foil Coil: Adopting the entire section of copper foil, together with the F-class turn insulation, low voltage winding is wound by the special low-voltage foil winding machine. The foil coil resolves problems such as large short-circuit stress, ampere turn unbalance, poor heat dissipation, existing the winding spiral angle and unsteady manual welding quality due to low voltage and large current coil. At the same time, the end of winding is treated with cast resin, solidification to make shape, moisture-proof and anti-fouling, the lead for copper bar is welded by argon arc welding automatically.

Temperature Control Device: the transformer adopts BWDK series of signal thermometer. The temperature components are embedded in the upper half of the low-voltage coil, can detect and display the temperature of separate phase coil automatically and continuously, also have the functions of over-temperature alarm and trip.

We are pleased to deliver Transformer, Distribution Transformer, Power Transformer, Oil Transformer, Dry Type Transformer. Safe payment and on time deliver time will give you want to know more about the product, please click here.

SG (B) 10 series Non-encapsulated H-class Dry-type Power Transformers,Dry type Power Transformers,hermetically sealed transformers,dry type transformer

Dry Type Transformer

Product Description

SG (B) 10 series of non-encapsulated H-class dry-type power transformers adopt the special process technology of German (MORA) dry-type transformers to ensure that the products fully meet the requirements such as fire prevention, waterproof ,environmental protection. It is the ideal product for distribution systems and widely used in the subway, shipbuilding, mining, chemical, power companies and personnel-intensive buildings as well as other special requirements of the occasion for safety.

Model and Meaning

SC(B)10 Series Resin-insulated Dry Type Transformer

SG (B) 10 series Non-encapsulated H-class Dry-type Power Transformers

Technical Parameter for 6kV, 10kV& 30kVA-2500kVA With Off Circuit Dry Type Transformer

Notes: The load losses listed in the table are the values of the reference temperature for different insulation systems in parentheses; The load losses under other insulation system temperatures that are not included in the table should be according to their respective reference temperatures, the corresponding calculation is based on the"- 155 ℃ (F)" insulation system temperature data.

Notes: The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.

Technical Parameter for 20kV & 50kVA-2500kVA With Off Circuit Dry Type Transformer

Technical Parameter for 35kV & 50kVA-2500kVA With Off Circuit Dry Type Transformer

Technical Parameter for SG(B)10 Series Non-encapsulated Class H Dry-type Transformer

Notes: The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.

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S11 Series 6kV-35kV power Transformer With Off Circuit Tap Changer,power oill transformer,high voltage step up transformer,distribution transformer

The products implement the National Standard GB1094-2013 Power Transformer and GB / T6451-2015 Three-phase Oil-immersed Power Transformer Technical Parameters and Requirements, and are recommended as the major equipment products for the national urban and rural power grid construction and retrofit by the State Economic and Trade Commission.

Product Description

The products implement the National Standard GB1094-2013 Power Transformer and GB / T6451-2015 Three-phase Oil-immersed Power Transformer Technical Parameters and Requirements, and are recommended as the major equipment products for the national urban and rural power grid construction and retrofit by the State Economic and Trade Commission.

S11 series transformer adopts high quality material for copper winding, especially applying the new technology and new material for the coil insulation and active parts, thus the no-load and the load loss are obviously reduced, the performance and structure are more reliable and superior.

Product Features

• Good Economic Performance

The no-load loss for S11 series products decreased averagely, no-load current decreased on S9 series.

• Long Service Life

Transformer tank adopts hermetical structure, tank and tank cover can be connected by bolts or welded firmly, the transformer oil won’t contact with air, so that extend the service life effectively.

• High Operation Reliability

Improve the relevant sealing parts for the tank, increase the reliability and advance the technical level to ensure the reliability of the seal.

• Small Installation Area

S11-M series transformer tank uses the corrugated plate radiator. When the oil temperature changes, the corrugated plate will proceed thermal expansion, which can replace the role of the oil conservator. the corrugated plate tank has beautiful appearance, less occupied area.

Table 1: 6Kv, 10kV & 30kVA-2500kVA Power Transformer With Off Circuit Tap Changer

Notes:

1. The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.
2. For the transformer of rated capacity up to 500kVA, the value of load loss above the oblique line in the table is applicable to the connection group Dyn11 or Yzn11. The value of load loss under the oblique line is applicable to the connection group Yyn0.

Technical Parameter for S11 Series 20kV Power Transformer With Off Circuit Tap Changer

Notes:

1. The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.
2. For the transformer of rated capacity up to 500kVA, the value of load loss above the oblique line in the table is applicable to the connection group Dyn11 or Yzn11. The value of load loss under the oblique line is applicable to the connection group Yyn0.
3. The performance parameters in the table are also applicable for HV with dual voltage 20 (10)kV three-phase transformer.

Technical Parameter for S11 Series 35kV Power Transformer With Off Circuit Tap Changer

Notes:

1. The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.
2. For the transformer of rated capacity up to 500KVA, the value of load loss above the oblique line in the table is applicable to the connection group Dyn11. The value of load loss under the oblique line is applicable to the connection group Yyn0.

S11 Series 35kV 630kVA-31500kVA Three-phase Dual Winding Power Transformer With Off Circuit Tap Changer

Note: the transformer of low voltage 1kV, the connection group symbol is applicable to Dyn11.

Note: the transformer of rated capacity 3150kVA or above, the -5% tapping position is for maximum current tap.

Note: the annual average load rate for the transformer is between 35% to 45%, the loss value in the table can obtain the highest operational efficiency.

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S13 series of Three-phase oil Immersed Transformers,three phase transformer,three phase variable transformer,3 phase transformer,three phase power transformer,3 phase step down transformer

Oil Immersed Transformer

Model and Meaning

Notes: The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.

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S(B)H15-M Series Sealed Amorphous Alloy Power Transformer,oil immersed transformer,oil immersed power transformer,oil distribution power transformer

Oil Immersed Transformer

The transformer is completely hermetical oil-immersed type. The principle is the same as the hermetical power transformer. The basic elements of the amorphous alloy is Iron, nickel, cobalt, boron and carbon etc.

Product Description

The transformer is completely hermetical oil-immersed type. The principle is the same as the hermetical power transformer. The basic elements of the amorphous alloy is Iron, nickel, cobalt, boron and carbon etc. It is a kind of isotropic soft magnetic material with low magnetizing power. With thickness and the filling coefficient is reduced to , the amorphous alloy material is very sensitive for stress. The electrical resistivity of the material is 3-6 times of silicon steel sheet and the hardness is 5 times of it.

Load loss of S(B)H15-M 30～1600/6～10 series transformer can be reduced by 15% on the basis of GB/T6451 standard. The no-load loss can be reduced by 70% on the base of GB/T6451 standard. Amorphous alloy transformer meets the standard JB/T10318-2002 Technical parameter of oil immersed type amorphous alloy transformer.

Technical Parameter of S(B)H15-M Series Hermetical Amorphous Alloy Power Transformer

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ZS Series Rectifier Transformer,oil immersed power transformer,high quality oil transformer,oil immersed power thransformer

Oil Immersed Transformer

Rectifier transformers are widely used in electrolytic electrochemistry, transmission, traction, electrostatic precipitators, DC transmission and other systems which need direct current power supply. Our rectifier transformer absorbed the excellent experiences of same industry at home and abroad. Raw materials such as high magnetic silicon steel sheet and high quality oxygen free copper wire are used. We adopt production technology such as advanced integral assembly per phase for windings, the core are laminated by five step-lap method to reduce iron loss and noise, crimped winding connections, precision machining for tank surface and so on, which make technologic performance at the leading level in domestic. We can design and manufacture various types of products according to user’s requirement.

Model and Meaning

Technical Parameter of Rectifier Transformer

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What Are the Common Drying Methods for Transformers?

The following are common drying methods for transformers such as H Class Dry Type Transformer for your reference:

(1) If the transformer drying chamber such as the Dry Type Cast Resin Transformer is not evacuated, the vent hole should be opened on the tank cover or the moisture should be released by the throttle hole.

(2) When heating with oil, the insulation layer should be installed outside the transformer tank such as the Three Phase Dry Type Transformer. The insulation layer can be insulated with asbestos cloth, glass cloth, etc., and flammable materials should not be used, and corresponding fire prevention measures should be taken.

(3) In order to improve the drying quality of the winding, there are two major factors that must be carefully considered: one is to control the drying temperature; the other is to increase the vacuum of the transformer equipment. For the first point, general drying equipment can meet the process requirements. For the second point, it is affected by many factors, and must be considered and arranged reasonably to achieve good drying effect.

(4) During the vacuuming process during drying, it is not suitable to vacuum or dry under low vacuum in the low temperature stage of drying, otherwise it is not conducive to the rise of core temperature and the elimination of moisture, when the temperature rises to 70~ The vacuum is increased at 80 °C. When drying for 1 to 2 hours, the water vapor in the oil tank is more, the heat radiation capability is improved, the internal temperature tends to be uniform, the moisture is gradually reduced, and the heat radiation capability is lowered.

(5) The method of identifying the insulation after drying and the technical specifications of the transformer for the test. After the transformer has been dried, its insulation performance needs to be fully evaluated to check its drying effect. The identified items, except the casing, are the same as the test items during the overhaul.

The company mainly produces: oil-immersed power transformers, dry-type transformers, box-type substation, high and low voltage switchgear assembly and a variety of special-type transformers. The hoisting, tooling and testing equipments are complete. Our company has passed the ISO9001-2015 international standard quality management system certification. All performance indicators of the products have reached the relevant national standards and international standards.

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What Are the Classifications of Substations?

Substations such as the Prefabricated Substation have the following classifications:

(1) A type of substation. It refers to the exchange of UHV stations, nuclear power, large energy bases (3 million kw and above) and cross-regional (North China, Central China, East China, Northeast, Northwest) 750/500/330kV substation.

(2) Type II substation. Refers to other than one type of substation, 750/500/330kV substation, power plant substation (1 million kW and above, less than 3 million kW) and inter-provincial liaison 220kV substation, main transformer or busbar outage, switch refusal A substation that causes quaternary and above power grid events.

(3) Three types of substations. Refers to the 220kV substation other than the second category, the substation of the power plant to the substation (300,000 kW and above, less than 1 million kW), the main transformer or busbar outage, the switch refuses to cause five-level power grid events, for the first level and above Substation that is directly powered by important users.

(4) Four types of substations. Refers to substations of 35kV and above in addition to the first, second and third categories.

Note: All 220kV substations in the work area are three types of substations, and all substations below 110kV are four types of substations.
We supply all kinds of Substation such as the Mobile Transformer Substation. If you have demand, welcome to contact us.

The company mainly produces: oil-immersed power transformers, dry-type transformers, box-type substation, high and low voltage switchgear assembly and a variety of special-type transformers. The hoisting, tooling and testing equipments are complete. Our company has passed the ISO9001-2015 international standard quality management system certification. All performance indicators of the products have reached the relevant national standards and international standards.

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Dry Type Transformer Structure Type

The Dry type Power Transformer is mainly composed of a core composed of silicon steel sheets and a coil made of epoxy resin. An insulating cylinder is placed between the high and low voltage coils to increase electrical insulation, and the coils are supported and restrained by the spacers, and the components are fastened by overlapping. Parts have anti-loosening properties.

The Dry Type Transformer' Construction performance:

(1) Solid insulation encapsulation winding

(2) does not encapsulate the winding

Winding: Among the two windings, the higher voltage is the high voltage winding and the lower is the low voltage winding.

From the relative positions of the high and low voltage windings, the high voltage can be divided into concentric and overlapping types.

Concentric windings are simple and easy to manufacture, all using this structure.

The overlapping type is mainly used for special transformers.

The company mainly produces: oil-immersed power transformers, dry-type transformers, box-type substation, high and low voltage switchgear assembly and a variety of special-type transformers. The hoisting, tooling and testing equipments are complete. Our company has passed the ISO9001-2015 international standard quality management system certification. All performance indicators of the products have reached the relevant national standards and international standards.

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How to Dry the Transformer?

Transformers such as Oil Immersed Transformer are sometimes wet, especially in the summer when the transformer is relatively powerful, and the power intensity is often overloaded. This makes the transformer such as Three Phase Transformer constantly appear new problems, and the humidity will cause the transformer to short-circuit. Phenomenon and problem, because the transformer is too wet, then the transformer needs to be dried. What is the common method and method of drying the transformer? The following are the common drying methods of the transformer for your reference:

(1) If the drying chamber is not evacuated, the vent hole should be opened on the cover or the moisture can be released by the throttle hole.

(2) When heating with oil, an insulation layer should be installed outside the fuel tank. Insulation materials such as asbestos cloth and glass cloth can be used for the insulation layer. Flammable materials should not be used, and corresponding fire prevention measures should be taken.

(3) In order to improve the drying quality of the winding, there are two major factors that must be carefully considered: one is to control the drying temperature; the other is to increase the vacuum of the equipment. For the first point, general drying equipment can meet the process requirements. For the second point, it is affected by many factors, and must be considered and arranged reasonably to achieve good drying effect.

(4) During the vacuuming process during drying, it is not suitable to vacuum or dry under low vacuum in the low temperature stage of drying, otherwise it is not conducive to the rise of core temperature and the elimination of moisture, when the temperature rises to 70~ The vacuum is increased at 80 °C. When drying for 1 to 2 hours, the water vapor in the oil tank is more, the heat radiation capability is improved, the internal temperature tends to be uniform, the moisture is gradually reduced, and the heat radiation capability is lowered.

(5) The method of identifying the insulation after drying and the technical specifications of the transformer for the test. After the transformer has been dried, its insulation performance needs to be fully evaluated to check its drying effect. The identified items, except the casing, are the same as the test items during the overhaul.

The drying of the transformer is handled by the above several methods. Only when the above technical indicators are reached will the transformer be operated more importantly to achieve more performance and efficiency of the transformer.

The company mainly produces: oil-immersed power transformers, dry-type transformers, box-type substation, high and low voltage switchgear assembly and a variety of special-type transformers. The hoisting, tooling and testing equipments are complete. Our company has passed the ISO9001-2015 international standard quality management system certification. All performance indicators of the products have reached the relevant national standards and international standards.

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Do You Know What Is The Short Circuit Impedance of The Transformer?

process of using, it is necessary to enhance the continuous improvement of the use and efficiency of the transformer such as Dry Type Transformer. Since the voltage of the transformer such as Cast Resin Transformer is affected by many factors, the voltage is controlled and used. The pressure of adjustment is not the same. The impedance of the short circuit of the transformer is also a major cause of the transformer's operation and one of the most effective means of controlling the voltage. So what is the meaning of the short-circuit impedance of the transformer in actual operation and operation? Here we will give you a detailed introduction:

Concept A

Generally, the short-circuit impedance of a transformer refers to the equivalent series impedance Zk=Rk+jXk between the terminals of a pair of windings at a rated frequency and a reference temperature. Since its value is determined by the load test in addition to the calculation, it is customarily referred to as the short-circuit voltage or the impedance voltage.

Concept B

The short-circuit impedance is an important item in the performance index of the transformer, and the deviation between the measured value and the specified value at the time of shipment is very strict.

Influence of transformer short-circuit impedance on transformer operation

Transformer short-circuit impedance, also called impedance voltage, is defined in the transformer industry: when the secondary winding of the transformer is short-circuited (steady-state), the voltage applied by the primary winding to the rated current is called the impedance voltage Uz. Usually Uz is expressed as a percentage of the rated voltage, ie uz=(Uz/U1n)*100%

When the transformer is fully loaded, the level of the short-circuit impedance has a certain influence on the output voltage of the secondary side. The short-circuit impedance is small, the voltage drop is small, the short-circuit impedance is large, and the voltage drop is large. When the transformer load is short-circuited, the short-circuit impedance is small, the short-circuit current is large, and the electric power that the transformer is subjected to is large. The short-circuit impedance is large, the short-circuit current is small, and the electric force that the transformer is subjected to is small.

The above is the impedance effect of the short circuit of the transformer and the basic analysis of the concept for your reference. Everyone can continuously promote the stability and stability of the transformer. In this case, many effects of the transformer will be exerted, and it is safer. 

The company mainly produces: oil-immersed power transformers, dry-type transformers, box-type substation, high and low voltage switchgear assembly and a variety of special-type transformers. The hoisting, tooling and testing equipments are complete. Our company has passed the ISO9001-2015 international standard quality management system certification. All performance indicators of the products have reached the relevant national standards and international standards.

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Transformer Energy Saving is More and More Popularized

Transformers such as Three Phase Transformer also have great developments and changes in the development experience, and the process of transformer experience is more complicated. Nowadays, the renewal and replacement of transformers is also relatively fast. There have been many changes in the process of transformer development and change. The current trend of energy-saving transformers is strengthened, and the advantages of energy-saving transformers are better, which saves raw materials and On the basis of energy, its efficiency is further improved.

The energy saving of transformers such as Three Phase Variable Transformer is a trend, although its promotion is difficult now, it is also a problem for enterprises, but it will gradually improve. For more energy-saving problems of transformers, please consult our manufacturers or pay attention to them. Our website!

The company mainly produces: oil-immersed power transformers, dry-type transformers, box-type substation, high and low voltage switchgear assembly and a variety of special-type transformers. The hoisting, tooling and testing equipments are complete. Our company has passed the ISO9001-2015 international standard quality management system certification. All performance indicators of the products have reached the relevant national standards and international standards.

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Cooling Method of Oil Immersed Power Transformer

In the operation of the Oil Immersed Power Transformer, the heat of the winding and the iron core is first transmitted to the oil and then transmitted to the cooling medium through the oil. The cooling method of the Oil Immersed Transformer can be divided into the following types according to the capacity:

1. Natural oil circulation natural cooling (oil immersed self-cooling)
2. Natural oil circulation air cooling (oil immersion air cooling type)
3. Forced oil circulation water cooling
4. Forced oil circulation air cooling

Normal use condition

1. Altitude up to 1000m indoors or outdoors
2. Maximum ambient temperature +40°C maximum daily average temperature +30°C
3. The highest annual average temperature +20 ° C, the lowest temperature -25 ° C
4. Transformers that operate under special conditions of use are available upon request.

We are Oil Immersed Power Transformer Suppleir. If you have demand, welcome to contact us!

The company mainly produces: oil-immersed power transformers, dry-type transformers, box-type substation, high and low voltage switchgear assembly and a variety of special-type transformers. The hoisting, tooling and testing equipments are complete. Our company has passed the ISO9001-2015 international standard quality management system certification. All performance indicators of the products have reached the relevant national standards and international standards.

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Distinguish Between Dry Type Transformer and Oil Immersed Transformer from The Outside

The biggest difference between an Oil Immersed Transformer and a Dry Type Transformer is that there is no "oil". Since the oil is liquid and has fluidity, the oil-immersed transformer must have a casing. The inside of the casing is transformer oil, and the oil is immersed in the transformer. The coil does not see the coil of the transformer from the outside; while the dry transformer has no oil, it does not need the outer casing, and can directly see the coil of the transformer; there is also a characteristic that the oil-immersed transformer has an oil pillow on it and is stored inside. Transformer oil, but now the new oil-immersed transformer also has transformers without oil pillows;

The Power Oill Transformer is convenient for heat dissipation, that is, it is convenient for the internal insulating oil to flow and dissipate heat. The heat sink is designed externally, just like the heat sink, but the dry type transformer does not have this heat sink, and the heat dissipation depends on the fan below the transformer coil. The fan is a bit like an indoor unit for home air conditioning;

Oil-immersed transformers are usually installed in a separate transformer room or outdoors due to the need for fire protection. The dry-type transformers are definitely installed indoors. Generally, they are installed in the low-voltage power distribution room and installed side by side with the low-voltage power distribution cabinet.

The company mainly produces: oil-immersed power transformers, dry-type transformers, box-type substation, high and low voltage switchgear assembly and a variety of special-type transformers. The hoisting, tooling and testing equipments are complete. Our company has passed the ISO9001-2015 international standard quality management system certification. All performance indicators of the products have reached the relevant national standards and international standards.

If you want to know more about the product, please click here.

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What is the Line Voltage and Phase Voltage of the Transformer?

The transformer such as Oil Immersed Transformer is a kind of voltage that can stabilize the voltage in the circuit and ensure the stability of the voltage and current in the circuit. For the transformer, it is a kind of electric equipment, which plays a huge role in various circuits and various kinds of circuits. A variety of advantages. Transformers have their own voltage and current. There are two kinds of transformers on the voltage, one is the line voltage and the phase voltage. They are two different voltages in a transformer. They are related and different. So what is the relationship between them?

The line voltage is the phase voltage of 3 times the root number, which is the voltage between the hot lines.

The phase voltage is the voltage between each phase and the neutral line. It is the voltage between each live line and the neutral line.

The line voltage refers to the voltage from the lead line of the Three Phase Transformer. The phase current refers to the current flowing through a phase coil of the three-phase equipment, and the phase voltage is the voltage applied to a separate set of coils. The phase voltage is the voltage between the phase line and the neutral line. For the delta connection, the line voltage is equal to the phase voltage, and the line current is equal to 3 times the root of the phase current; for the star connection, the line current is equal to the phase current, and the line voltage is equal to 3 times the root of the phase voltage. For practical three-phase equipment, such as transformers, motors, etc., measuring line current line voltage is easier to implement than measuring phase current phase voltage, so the nameplate is marked with line current and line voltage.

Transformer secondary side load current: line current = phase current, line voltage between three phases, phase and voltage of any phase of the three phases.

In the symmetrical three-phase circuit, the phase voltage or the line voltage can be used for calculation, but the formula is different.

Use the line voltage calculation formula:

P=

Use the phase voltage calculation formula:

P=3×U×I

The introduction of the two voltages of the transformer and the related calculation methods will be introduced here. For the two voltages of the transformer, the functions and various advantages should be exerted to a greater extent to ensure the stability of the transformer voltage and achieve transformer safety. And stable operation!

The company mainly produces: oil-immersed power transformers, dry-type transformers, box-type substation, high and low voltage switchgear assembly and a variety of special-type transformers. The hoisting, tooling and testing equipments are complete. Our company has passed the ISO9001-2015 international standard quality management system certification. All performance indicators of the products have reached the relevant national standards and international standards.

If you want to know more about the product, please click here.

More Products Please View Hifactory.