Box-type substation ly2015.2 (referred me change) is a high-voltage switchgear and distribution transformers, low voltage switchgear, electrical measuring equipment and reactive power compensation devices, according to a certain connection schemes in one or a combination of several cabinets Compact power distribution equipment. It is suitable for rated voltage three-phase AC system 10 / 0.4KV in, as the line and distribution of electric energy. Compared with the same capacity in disguise Continental me, American box changed the structure is more reasonable. Continental me change is due to the high-voltage transformers and general electrical equipment installed in the same box in a metal housing, the transformer room temperature is high, causing cooling difficulties, affecting output; ordinary high-voltage load switch and fuse box in the other hand, used , low-voltage switchgear, so the volume becomes larger box. On American and Continental me change me change the structure is not the same. From the layout point of view, its low-pressure chamber, transformer room, high-pressure chamber is not eye-shaped layout, but the product is shaped layout. From a structural point of view, before this box becomes divided, after the previous two sections of high and low voltage operation intervals, within the operating interval includes high and low voltage terminals, load switch operating handle, sub-section no-load tap changer, plug-in fuse , oil level gauge, etc; the rear of the tank and a heat sink for the Notes, the transformer windings, core, high voltage switches and fuses into the transformer tank. Arrester also uses oil-immersed MOA. Cancel transformer oil pillow, take oil plus constant volume air gap design principles sealed tank, fuel tank and radiator exposed to air, no heat problems. Low-voltage circuit breaker MCCB circuit breaker as the main circuit breaker and outlet. Due to simplify the structure, area, and volume of such box-type substation greatly reduced, due to its small size coupled with only one side of the door, the required area is only 1/4 of European box changes, the volume only change Continental me for the same capacity of 1 / 5-1 / 3. American box fuse protection using the high side, low side adopts automatic air molded case circuit breaker protection, and China 10kV distribution transformer same protection. High-voltage fuse protection transformer internal fault, automatic air circuit breakers to protect the low-pressure side of the circuit overcurrent, short circuit, undervoltage fault. American box shortcomings. Because the load switch soaked in oil, oil is the arc carbonized, broken down to produce acetylene and other harmful gases, making the performance degradation, had an accident. Can not see the obvious break point, maintenance inconvenient. Because the US low-voltage protection and metering mode, unlike China, American box itself, without low voltage protection and metering. To meet the needs of domestic users, domestic box changes in the low-pressure side of the installation of low voltage distribution cabinet. Due to long-term change in the box under the brunt of the sun's influence MCCB heat, making the circuit breaker can not properly breaking load and short-circuit current, easily lead to high-side fault. Company Website: http: //www.jilinshengye.com