It can run under 6kV、10kV electric network. without intermediate transformer , featured in cost saving ,low energy consumption, easy operation, etc, suitable for axis driving machines, they are widely used in various fields, such as electric power, metallurgy, petroleum industry and mining machines. The products are box-structure and mixed ventilation system , featured in nice looking, high efficiency, small size, low noise and vibration. This product can match international advanced level and have won prize from national machine department.