Describe

Yb6 series prefabricated substation is applicable to 7.2kV and 12kV ring network power supply, dual power supply or terminal power supply system. It is used as high-voltage distribution metering, compensation control and protection device. In addition to the transformer installed in the prefabricated substation, the high-voltage side is also equipped with four station load switch, two station load switch, backup protection fuse and plug-in fuse; The low-voltage side shall be equipped with control appliances and power distribution appliances according to the user's requirements. Compensation device and electric energy meter, etc.

Yb6 series prefabricated substation can be used both indoors and outdoors. It is widely used in industrial parks, residential areas, business centers, high-rise buildings and other places.

Product model and meaning

Normal service conditions

1. Altitude ≤ 1000m (beyond this range, it will be designed separately);

2. Wind pressure: no more than 700pa (equivalent to 35m / s)

3. Ambient temperature: maximum temperature + 45 ℃, minimum temperature - 30 ℃, maximum daily average temperature + 30 ℃, maximum monthly average temperature + 20 ℃;

4. Humidity: the daily average value shall not be greater than 95%, and the monthly average value shall not be greater than 90%

5. Seismic level: horizontal acceleration 0.3g

6. Inclination of installation site: no more than 3 °;

7. The effects of sunshine, pollution, exposure and natural decay should be considered;

8. The surrounding air is not obviously polluted by corrosive, combustible gas and banana gas, and there is no violent vibration at the installation site.

When this product goes out of this regulation, the user can negotiate with the technical department of the company.

Structural features

Yb6 series combined transformer is a high-tech product developed by our company on the basis of absorbing American padmounted transformer technology. This series is a box type. The common fuse, high-voltage load switch (or high-voltage load transfer switch) and non excitation voltage regulating tap changer are installed in the transformer oil tank as the components of the transformer. Also commonly known as American box transformer.

The capacity range of 100-1600kvao is applicable to 10kV distribution network, which is neutral point insulation system or small resistance grounding system, while 400V system is three-phase four wire neutral point direct grounding system.

The main technical and economic indicators have reached the international advanced level of similar products.

It has strong integrity, reliable power supply, small volume, light weight and low noise.

It has ring network type and terminal type, and cable outlet.

Make 10kV power grid go deep into the load center, reduce line loss and improve power supply reliability. Beautify the urban environment and apply to the transformation of urban network.

Special wiring mode is adopted. When one phase fuse on the high-voltage side of the transformer is blown, the normal voltage power supply can still be maintained when the low-voltage side of the transformer is not in fault. Its protruding advantages are high voltage quality, no drift of neutral point, no heating of box, low noise, good lightning protection performance, etc.

Through special design, the transformer body, high-voltage load switch (or high-voltage load transfer switch), fuse and non excitation tap changer are placed in the fully sealed oil tank, which improves the space utilization rate. Its volume is only equivalent to about 1 / 3 of the box type substation (also known as European substation) with the same voltage level and capacity, and the environmental volume is also greatly reduced.

Good security. The high voltage chamber is fully insulated. High and low voltage interlocking rooms are adopted. The high-pressure chamber door can be opened only after the low-pressure chamber door is opened.

Full fault protection Fangwu with the combination of two-stage fuses (backup current limiting fuse and plug-in breaker) is safe and reliable, flexible operation and convenient fuse replacement.

Pluggable cable head, convenient and flexible operation.

The oil tank is a fully sealed structure without oil conservator, and the oil in the oil tank is isolated from the outside world. No leakage, maintenance free.

Low loss. The performance parameters of this series of combined transformers are lower than those of the new S11 series distribution transformers.

Strong short-circuit resistance and overload capacity.