1、 Overview:
The YB2D series explosion-proof variable pole multi speed three-phase asynchronous motor is suitable for electric traction in underground coal mines (non mining working faces) and workplaces containing explosive gas mixtures in factories. The motor changes polarity and speed.

The YD series variable pole multi speed three-phase asynchronous motor is suitable for use in places without explosive gas mixtures in factories. The YDT series electric motors are suitable for places such as mining, metallurgy, textile, chemical, light industry, and civil facilities that require seasonal and temperature regulation of fan air volume and pump flow. YB2D and YD have the same electrical performance, and the installation dimensions of YB2D series motors are the same as those of YB2 series motors. The installation dimensions of YD and YDT series motors are the same as those of Y2 series motors.
The explosion-proof performance of YB2D series motors meets the requirements of GB3836.1-2000 "Electrical Equipment for Explosive Gas Environments Part 1: General Requirements" and GB3836.2-2000 "Electrical Equipment for Explosive Gas Environments Part 2: Explosion proof Type" d "standards, and are respectively made into explosion-proof types Exd Ⅰ and Exd Ⅱ BT4.

2、 Main technical parameters of YB2D series explosion-proof variable pole multi speed three-phase asynchronous motor:
1. Rated voltage: 380V, 380/660V, 1140V
2. Rated frequency: 50Hz
3. Protection level: IP55
4. Cooling method: IC411
5. Work schedule: S1
6. Insulation level: F
7. Installation forms: IMB3, IMB5, IMB35, etc

3、 Comparison Table of Seat Number, Speed Ratio and Power of YB2D Series Explosion proof Variable Pole Multi speed Three phase Asynchronous Motor