Motor model designation method and meaning

YB2-l32S1-2: In the motor model YB2132S1-2, the pinyin letter Y denotes an asynchronous motor; B indicates an explosion-proof design. The subscript 2 signifies an energy-saving version. The YB2 model replaces the previous YB model. The number 132 indicates that the center height of the motor frame is 132 MM. The English letter S represents the frame length – S stands for short frame (M for medium frame, L for long frame). The numbers following the letter denote the length of the core: 1 corresponds to a short core (2 corresponds to a long core; sometimes A and B are also used to indicate short and long cores respectively). The numbers after the hyphen represent the number of poles in the motor – 2 means two poles. Ed2ⅡBT4: Ed enhanced explosion-proof type; d flameproof electrical equipment. II: Electrical equipment for industrial use. It is classified into grades A, B, and C based on the maximum experimental safety gap or minimum ignition current applicable to the explosive gas mixtures, and this corresponds to grade B. It is divided into 6 groups from T1 to T6 according to the maximum allowable surface temperature, and this corresponds to T4. IP55: The protection rating of the motor – the first digit 5 indicates protection against dust from entering the interior; the second digit 5 indicates protection against water sprays. F denotes the insulation class, which is further divided into several levels.

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