Model Meaning

Product Description

YB series pre-installed substations are suitable for 72kV and 12kV ring network power supply, dual power supply or terminal power supply system, as high-voltage distribution metering, compensation control and protection device, the high-voltage side is also equipped with four-station load switch or two-station Load switch, backup protection fuse and plug-in fuse, the low-voltage side is equipped with control appliances, power distribution appliances, compensation devices and electric energy meters according to user requirements.

YB series prefabricated substations can be used indoors and outdoors, widely used in industrial parks, commercial plazas, high-rise buildings and other places.

Structural features

The box structure of this series of products is divided into two parts: front and back. The front is the high and low pressure operation interval. The high-voltage compartment includes high-voltage terminals, load switches, no-load pressure-adjusting tap-changers, plug-in fuses, pressure relief valves, oil thermometers, and oil drain valves. The low-voltage compartment includes low-voltage terminals, the rear is the oil-filled box body and heat sink, transformer windings and iron core, high-voltage load switch and protective fuse are in the oil storage tank.

Performance characteristics

◆ Small size and compact structure, only about 13 of the same capacity European-style box transformer in China;
◆ Fully sealed, fully insulated, no insulation distance required;
◆ It can be used in ring network and terminal, the conversion is very convenient, and the reliability of power supply is improved;
◆ Low loss, lower than domestic s9 transformer loss;
◆ The cable connector can operate 200A load current, can be used in emergency
Operates for load switch and has the characteristics of isolating switch; adopts double fuse
Wire protection reduces operating costs. Plug-in fuse fuse is double sensitive
Fuses (temperature, current); O, Y are used. Connection method and three-phase column junction
Structure, the advantage is that the voltage quality is high, the neutral point does not drift, the cabinet does not send
Heat, low noise and good lightning protection.

Normal use conditions

◆ Altitude ≤1000 mil (design beyond this range)
◆ Wind pressure: no more than 70pa (equivalent to 35m / s)
◆ Humidity: The daily average value is not 95% of F, and the monthly average value is not more than 90%;
◆ Anti-shock level: horizontal acceleration 04m / s2; vertical acceleration 015m / s2;
◆ Earthquake intensity: 8 degrees;
◆ Inclination of the installation site: no more than 3 degrees:
◆ Installation environment: the surrounding air is not subject to corrosive, flammable gas and water vapor
Air and other obvious pollution. There is no severe vibration at the installation site.

The main technical parameters