The installation dimension and power grade of Y2 series motor comply with IEC standard, which is consistent with German din42673 standard. It is also the same as Y series motor. Its enclosure protection grade is IP54, the cooling method is ic41l, and the continuous working system (S1). Class F insulation is adopted, and the temperature rise is assessed according to class B (except that all specifications of 315l2-2 and 4355 are assessed according to class F), and the load noise index is required to be assessed. The rated voltage of Y2 series motor is 380V and the rated frequency is 50Hz. The power below 3kwt is Y connection method, and other powers are △ connection method. The altitude of the motor operation site shall not exceed 1000m; The ambient air temperature varies with seasons, but does not exceed 40 ℃; The minimum ambient air temperature is - 15 ℃; The average maximum relative humidity in the wettest month is 90%; At the same time, the monthly average minimum temperature is not higher than 25 ℃

Y2 series motors have two designs. One is suitable for general mechanical matching and export needs. It has high efficiency under light load, better energy-saving effect in actual operation and high locked rotor torque. This design is called y2-y series. The center height is 63 ~ 355mm, and the power is ~ 315KW. The motor meets the technical conditions of JB / Y2 series (1p54) three-phase asynchronous motor (frame No. 63 ~ 355). Model meaning: for example, y2-200l1-2y: "Y2" represents the second modification design of asynchronous motor, "200" represents the center height, "L" represents the length number of frame, "1" represents the serial number of core length, "2" represents the number of poles, "Y" represents the first Design (which can be omitted). The second design has high efficiency under full load and is more suitable for long-term operation and application occasions with high load rate, such as matching of water pump and fan. This design is called y2-e series, with center height of 80 ~ 280mm and power of ~ 90kw. The motor meets the technical conditions of JB / Y2 series (1p54) three-phase asynchronous motor (frame No. 80 ~ 280). Model meaning: for example, y2-200l2-6e: "Y2" represents the second modification design of asynchronous motor, "200" represents the center height, "L" represents the length number of frame, "2" represents the serial number of core length, "6" represents the number of poles, "e" represents the second design

The outer wheel profile of series motor base is square and circular, and the heat sink is vertically and horizontally distributed in parallel. All of them adopt cast iron structure. In addition, h63 ~ 112 also has aluminum alloy die-casting structure. 2. This series of motors adopt shallow end cover structure, increase the number and size of internal stiffeners, all adopt cast iron structure, and h63 ～112 also has aluminum alloy die-casting structure. In order to facilitate the use and maintenance of users, an oil filling device without shutdown is added for h180 and above.    

3. The protection grade of junction box is IP55. In order to reduce the weight of the motor, h63 ~ 280 junction box is made of aluminum alloy die casting (cast iron can also be used), and H315 ~ 355 is made of cast iron. A special grounding device is set in the box. The installation position of thermal protection device is considered for h160 and above machine bases. The power incoming hole adopts double hole incoming line, and there are two sealing structures: one is encryption cover and the other is locking seal. The junction box is generally located on the top of the base and can be led out on four sides. In addition, the junction box of H80 ~ 355 cast iron base can also be located on the side of the base