Power transformers dry TSZNG up to 10 kV

Dry power transformers of the TSZNG series in a hermetic tank are intended for external use. This type of transformer is three-phase. Made in a hermetic tank with windings made of wire with "NOMEX" insulation of heat resistance class "H" (180 °С), two-winding, general purpose power from 10 to 100 kV•A voltage up to 10 kV. They are used in various sectors of the national economy and industry, designed for the conversion of electrical energy in three-phase alternating current electrical networks with a frequency of 50 Hz. They are installed in industrial premises and public buildings, which are subject to increased requirements in terms of fire safety, explosion protection, and environmental cleanliness.

A characteristic feature of these transformers is the ability to work when installed outside with an ambient temperature from -45°С to +40°С.

The structure of the conventional designation TSZNG-X /10 U1:

T – three-phase transformer;

S – natural air cooling;

Z – protected execution;

N – winding with "NOMEX" insulation;

G – hermetic;

X – nominal power, kVA;

U1 - climatic performance and accommodation category according to GOST 15150-69.

Specifications:

Power transformers of the TSZNG type with capacity from 10 to 100 kVA with nominal voltages of the primary winding (high voltage) up to 10 kV inclusive and the secondary winding (low voltage) - 0.4 kV. Basic schemes and groups of connection of windings (HV/LV) - D/un-11, U/un-0. Voltage regulation ±2x2.5%, in steps of 2.5% from the nominal voltage, switching without excitation (PBZ) using jumpers.

Operating conditions:

- ambient temperature: from -45 °C to +40 °C;

- relative air humidity - 100% at a temperature of +25 °C;

- installation height above sea level - up to 1000 m;

- environment - non-explosive, not containing conductive dust;

- for seismic impact - up to 9 points on the MSK-64 scale;

Construction of transformers:

Transformers consist of the following basic assembly units:

- magnetic circuit;

- windings placed on the magnetic circuit;

- taps, inputs of LV and HV;

- lid and sealed tank. The magnet wire is made of high-quality electrical steel. Special cutting on the "GEORG" line and charging of the magnetic wire according to the "Step-Lap" scheme. Assembly of the magnetic circuit is carried out with the use of bandages, fastening pins and special glues that ensure low idle losses and noise level. To protect against corrosion, silicon-organic paints are used. LV windings are made of wire or tape with "NOMEX" insulation, the material of the windings is copper or aluminum. HV windings are made of wire or tape with "NOMEX" insulation. The active part is impregnated with organosilicon varnishes, passes through electric furnaces according to special temperature programs, which guarantees resistance to short-circuit currents,

Transformers are manufactured in a hermetic tank with terminals on the lid. The internal volume is filled with inert gas under excess pressure. At the request of the customer, the manufacturing plant designs and manufactures transformers of individual design or with parameters that differ from the standard ones.

Overload capacity of transformers:

Overload is limited only by overheating of the windings. The maximum temperature exceedance of 125°C for insulation class "H" is achieved under the condition: the ambient temperature is 40°C and the transformer operates for a long time at nominal load. If the ambient temperature is below 40 °C, and the previous load is less than the nominal one, then the winding temperatures will be below the permissible maximum. This temperature difference can be used for short-term overloading of the transformer. The duration of a possible overload is shown in the following graphs as a function of the previous load and the magnitude of the overload.

Delivery completeness

The delivery set includes: transformer, manometer, movable rollers (rollers), technical documentation (passport, technical description and instructions for storage, installation and operation). They meet the standards of MEK-76, DSTU 3076-95 (GOST 30297-95), TU U3.49-00213440-059-2002, the production is certified according to ISO 9001: 2008

We deliver orders throughout Ukraine, except temporarily occupied territories and war zones. Delivery is carried out by transport and logistics companies chosen by you.

The terms of delivery of the order depend on the availability of goods in the warehouse. If at the time of placing the order, all the selected goods are available, then we will deliver the order within a few days, depending on the remoteness of your region. If the ordered product is not in stock, the maximum delivery time of the order may be several weeks. But we try to deliver orders to customers as quickly as possible, and 90% of customer orders are shipped within the first almost immediately. In the event that part of the goods from your order did not arrive at the warehouse after the specified period during the discussion with the manager, we will definitely inform you about it.

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