Oil voltage transformers

Oil voltage transformer is a stationary device that includes two or more windings. The main objective of these devices is to convert the current. In this case, the parameter limit frequency of the circuit remains unchanged. This process occurs by means of electromagnetic induction.

It is Also important to note that the transformers are secondary sources of power supply. All of this suggests that they provide a supply of electricity from the network. The difference between the transformers is in their power. However, models also have their own design features. In order to more thoroughly understand this issue, consider the device of a conventional transformer.

Device transformer

If we consider the TM series oil transformer, the device is quite simple. It contains three pins, and they are located at the top panel. In this case opening the contacts provided low-voltage type. At the bottom of the design a grounding system for safe use of the transformer. Under the conclusions is a complex mechanism of the bypass valves.

With a Drain pipe located at the bottom of the transformer. For easy transportation of the device there is a special bar where you can find openings. Near the switch set in the monitor video. Next to the input contacts is a large relay. In order to monitor the performance of the transformer, its case has a built thermometer. Also there the user is able to find the oil level indicator. In some configurations, the transformers TM series provides a dehumidifier.

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Repair of transformers

In some cases, the relay device may be damaged. Repair of oil-immersed transformers in this situation should begin with the inspection of low voltage contacts. Directly the protective cover can be removed with a screwdriver. In order to get to the relay will need to disconnect the top plate. In this case, the switching mechanism does not need to touch. In some versions you will also need to remove the filler neck. If the windings are visible dark spots, so the relay will have to be changed.

Single-phase modifications

Single-phase modified the power limit for an average of 20 kVA. This parameter operating frequency of the relay reaches 55 Hz. In this case, a lot depends on the types of contacts. If we consider modifications of the copper, the conductivity of the current from them is pretty good. Overload single-phase transformers are able to withstand on average, 5 A.

According to the dimensions of the model are quite different. Directly inlets typically installed on the side panels. To change the position of the switch, there are special rollers. Grounding system installed in the lower part of the structure. Next to the frame of the transformer there is a small pipe to drain the oil.

Difference of two-phase models

Two-phase transformers are different in that their power is 50 kVA. In turn, the parameter is operating frequency in some versions reaches 60 Hz. This is largely achieved through the installation of large relays. Switches many models are available with roller mechanism. System grounding is provided in all versions with insulators. Input voltage two-phase device of the type capable to withstand the average at 15 kV. However, there are more powerful models. Dehumidifiers in these design mostly provided

Three phase transformers

Three-phase oil transformers are equipped with three input contacts. In this case, the working frequency of the circuit is maintained at about 70 Hz. If we talk about the power models, the average three-phase oil-transformer TM series gives about 500 kVA. Input voltage relay holding at 30 kV. Dimensions model three phase type are quite large.

Considering all the above, the transport panel they are set durable. To monitor the operation of the system provided by the thermometers, as well as signs of oil. A configuration of three-phase transformers are equipped with dehumidifiers.

Characteristics TM-25

Oil transformer TM-25 is available with one relay. In this case, the power, as the name implies the model is 25 kVA. Input voltage the device can withstand of 25 kV. In turn, the parameter overload average of 6 A. If we talk about the design features, the fuel filler neck on this model is located at the rear panel. Directly drain the lad is provided with a diameter of 3.5 cm

The Thermometer in the transformer is used. Dehumidifier this model is also available. For the oil level, the user is able to monitor using special pointer. The grounding system at the transformer a insulator. The relay in this case is installed above the lower plate. All introductory contacts design there are two. The redistribution phase was carried out via a switch. It works due to the movement of the rollers.

Device transformer TM-40

The specified Power of a transformer equals 40 kVA. In this case, the output contacts voltage max able to withstand at 32 kV. Setting limiting frequency relay is exactly 50 Hz. The switch current in this case there is. For easy transport of the model is plate over the frame where the holes for grip.

This transformer has a special cooler. Filler in this case is located at the control panel. High-voltage contacts in this case are located in the upper part of the structure. Dehumidifier this transformer is missing.

Transformers with a capacity of 63 kVA

Power Transformers (oil) of this type, the maximum voltage able to withstand at 35 kV. In this case, the rate of load current is not more than 6 A. All of this suggests that operating frequency exceeds 55 Hz. High voltage leads in this case are located near the top panel. Switches in devices installed with a roller mechanism. Thermometers models are available. Directly relays are located above the lower plate near the frame. Dehumidifiers these transformers are available. Grounding system provided with insulators.

Modifications 100 kVA

Oil-immersed transformers 100 kVA, typically with desiccants. In this case, the drain pipes have different diameters. In some versions there are two relays. Directly contacts the high-voltage limit voltage capable of withstanding at 15 kV. Indicator overload current average of 6 A.

If we talk about the relay, it is important to note that the working frequency is equal to the average of 45 Hz. Plates over the frames are installed in different thickness. Switches in many models there are of the roller type. The lower frames of the grounding system provided with insulators. The oil level indicators are standard on the control panel.

Transformers 160 kVA

Oil transformers of 160 kVA are different in that they have two relays. In this case, the input contacts in the system there are three. The maximum voltage they can withstand 30 kV. A deviation from the norm may not exceed 20 V.

Switches to change the phase are installed on the control panels. Overload devices of this type on average is kept at 6 And the Filler neck.. the transformers are of different diameters. If to speak about the modification of the series of TMG, the width of the nozzle is equal to the average of 3.5 cm Coolers are available in all models of transformers.

Transformers 250 kVA

Oil transformers with power equal to 250 kVA, are made with three relays. In this case the platform used is quite broad. Parameter input voltage circuit is equal to the average of 30 kV. In turn, the measure of the system overload reaches 4 A.

Switches in many configurations, there are roller type. Directly change the phase of the models is very fast. System grounding it is at the bottom of the frame. Indicator output voltage reaches the devices up to 15 kV. The filler neck on the models are mostly from the relay. Thermometers in this case are equipped with all configurations.

Modifications TMG

Transformers of TMG series only produced two-stroke type. In this case, a relay set with an operating frequency at 50 Hz. Directly indicator of the load current is 6 A. the protection System models are available with insulators. The drain nozzles are mounted of different diameters. If we talk about the input contacts, the threshold voltage of a maximum of they are able to withstand about 30 kV. While the power indicator is in the middle...