The role of insulation tubes in electrical motors

As a key material in the motor insulation system, insulation tubes play a vital role in the operating stability and safety of the motor.

The role of insulation tubes

‌Provide insulation protection‌: Insulation tubes can provide insulation protection for the electrical circuits inside the motor, prevent current leakage and short circuit and ensure that the current flows along the predetermined path‌.

‌Prevent current leakage‌: The insulation tube can isolate the live parts from the non-live parts or parts with different potentials, which prevents the current from passing through, and ensures the electrical safety inside the motor‌.

‌Protect the wires‌: The insulation tube covers the wires to prevent the influence of external factors such as rain and dust on the wires, reduce the risk of electrical accidents and ensure the safety of the staff‌.

‌Extend the life of the equipment‌: By reducing the corrosion damage of wires and other accessories, the insulation tube helps to extend the working life of the equipment‌.

Problems that may occur during the use of insulation tubes

Material aging: During long-term use, the insulation tube will gradually age and harden because of oxidation, ultraviolet rays, high temperature, high humidity and other factors, which causes the material to become brittle, cracked, and broken and directly affects the insulation performance and mechanical strength of the insulation tube.

Wear and damage: During the friction and extrusion process with cables, wires and other equipment, the insulation tube will be subject to varying degrees of wear, such as outer skin wear, burrs, cracking, and falling off, which will reduce the insulation effect and protective effect of the insulation tube. Especially in the dipping and baking process, if there are sharp burrs on the insulated part, the insulation tube may be damaged.

Local short circuit: Due to damage and leakage of the insulation layer of the wire, the current may flow through the insulation tube, causing a local short circuit. This will cause the tube to heat up, burn, etc., and in severe cases may cause fire or equipment damage.

Environmental corrosion: The insulation tube is exposed to harsh environments such as chemicals, acid rain, salt spray, etc. for a long time, which will cause corrosion to the tube material. This will cause the outer skin to sag, discolor, break, etc., weakening the insulation performance and structural strength of the tubes.

Poor heat shrinkage: After the dipping and baking process, the insulation tube should shrink to varying degrees due to the heating effect,which can better play an insulating role. However, if the heat shrinkage is poor, it will affect its insulation effect.

Solution

In order to avoid the impact of insulation tube failure, we can take the following measures:

1. Maintenance: Regularly maintain the power equipment, replace aging and damaged insulation tubes in time to reduce the possibility of failure.

2. Choose high-quality insulation tubes: When purchasing insulation tubes, choose products with good quality and reliable brands to ensure the stability and safety of power equipment.

3. Strengthen personnel training: Train the personnel who use and maintain power equipment, improve their understanding and maintenance skills of insulation tubes for power equipment and effectively avoid the occurrence of human failures.

For power equipment, insulation tubes are an indispensable and important part. Their failure will affect the normal operation of the equipment. Therefore, in the usual use and maintenance process, we need to pay enough attention to timely discover and solve the fault problems.