Main functions:

When two sets of series excitation motors is powered by one set of rig123.net' target='_blank'>SCR cabinet and parallelly drives the same load, one set or two sets of motors loses load and overspeed for chain wheel fault. Mud pump drive belongs to this situation. The function of chain wheel skidding-proof board is to supervise rotational velocity and load is normal or not. When rotational velocity and load ratios exceed threshold value, it is estimated that belt pulley will occur skidding incident. When continuous wheel skidding occurs, disconnect assigned contact and power supply of two sets of motors and galvanize chain wheel skidding light on the panel.

Composition of system elements: Skidding-proof circuit testing board, Hall element, voltage transformer