Product description

YB series prefabricated substations are suitable for 7.2kV and 12kV ring network power supply, dual power supply
or terminal power supply systems, as high-voltage power distribution metering, compensation control and
protection devices. In addition to the transformers in the prefabricated substation, the high-voltage side is also
equipped with a four-position load switch, a two-position load switch, a backup protection fuse and a plug-in fuse,
and the low-voltage side is equipped with controllers, power distribution appliances, and Compensation device and
electric energy meter, etc.
YB series prefabricated substations can be used indoors and outdoors, and are widely used in various places such
as industrial parks, residential quarters, commercial centers and high-rise buildings

Structural features

The box structure of this series of products is divided into front and rear parts. The front is the high and low pressure operation interval. The high-pressure compartment includes high-voltage terminals, load switches, no-load tapchangers, plug-in fuses, pressure release valves, oil temperature gauges, oil level gauges, and oil drain valves. Lowvoltage terminals are included in the low-voltage compartment. The rear part is the fuel tank body and the heat sink, the transformer winding and iron core, the high voltage load switch and the protective fuse are all in the fuel storage tank.

Normal use environmental conditions

1. Altitude: 1000m and below;
2.Wind pressure: not more than 70Pa (equivalent to 35m/s);.
3. Humidity: the daily average value is not more than 90%, and the monthly average value is not more than 90%;
4. Ambient temperature: highest temperature +40°C, lowest temperature -25°C;
5. Anti-vibration level: horizontal acceleration 0.4/S2; vertical acceleration 0.15m/S2;
6. Earthquake intensity: 8 degrees;
7. Installation environment: The surrounding air is not significantly polluted by corrosive, flammable gas and water vapor,and there is no severe vibration at the installation site.

Performance characteristics

1. Small size and compact structure, only about 1/3 of the domestic box change with the same capacity;
2. Fully sealed and fully insulated, no insulation distance is required, and personal safety can be reliably guaranteed;
3. It can be used for both ring network and terminal, the conversion is very convenient, and the reliability of power supply is improved;
4. The loss is small, which is lower than the loss of the domestic S9 transformer;
5. The cable connector can operate 200A load current, and can be operated as a load switch in an emergency, and has the characteristics of an isolating switch;
6. The use of double fuse protection reduces the operating cost. The plug-in fuse fuses are dual sensitive fuses (temperature, current);
7. O/Y is used. The connection method and the three-phase five-column structure have the advantages of high voltage quality, no neutral point drift, no heat generation, low noise, and good lightning protection.

The main technical parameters

Standard American Substation

The shell material of this series of prefabricated substations is made of high-quality cold-rolled steel plate, and the box structure is assembled. The surface of the box adopts advanced technology for anti-corrosion treatment. First go through a surface preparation Treatment process, followed by electrostatic powder spraying and coating process.

American Substation with Stainless Steel Shell

This series of prefabricated substation shells are made of high-quality stainless steel plates,which greatly improves the corrosion resistance of the substations.
The stainless steel honeycomb double-layer structure has good temperature insulation and heat dissipation functions. Scientific design and exquisite processing technology make the stainless steel shell American
box full of elegance and modernity.The box body can be bright or matt, and can be sprayed into various colors according tocustomer requirements.

Y B series prefabricated substation ordering instructions

When ordering a pre-installed substation, the customer (user) must provide the
following information
A. Box change model: European or American;
B. Transformer model and capacity;
C. Primary wiring diagram of high voltage system and low voltage system;
D. High-voltage power supply mode: ring network or terminal or other; high-voltage
load switch model; high-voltage measurement method;
E. Low-voltage main switch model, metering method, outlet switch model and
number of routes;
F. Low voltage reactive power compensation method and compensation capacity;
G. Box material: such as steel plate or aluminum alloy + color steel plate or nonmetal, etc.;
H. Other special requirements can be negotiated with the manufacturer.