In addition to the use of 36V and below the voltage, the power supply isolation transformer secondary winding is not grounded, the power circuit is equipped with reliable low voltage leakage protection, the rest are wearing rubber gloves, if necessary, wear insulating shoes or stand on the insulating pad. Operation isolation transformer should be the original deputy double windings, the secondary windings may not be grounded, metal shell and core should be reliably grounded. Terminals should be closed or add protective cover. Fuse the original winding should be dedicated, with bipolar knife control, lead length should not exceed 3m, may not have joints.

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Before and after the use of tools, custodians must conduct routine checks, the user should be checked before use. Daily inspection of the contents are: shell, the handle without damage cracks, mechanical guards are intact, the tool is rotating part of the flexible, light and unobstructed, the electrical protection device is good, the protection line connection is correct and reliable, the power switch is normal and flexible, the power plug And the power cord is intact. Found that the problem should be immediately repaired or replaced.