Mechanical Injury Prevention:
1. Before using the wrench, make sure it is a certified and qualified tool. It should have proper labeling or certification to ensure its reliability.
2. Inspect all mechanical transmission components before use to confirm that all nuts are securely fastened. Only use the wrench after it has passed testing and inspection.
3. Always unplug the power source before replacing or adjusting the wrench to avoid electrical hazards.
4. Securely fix the wrench during operation and hold it firmly with both hands. In special cases, the wrench can be lifted and fixed, but always ensure it is stable to prevent accidental detachment.
5. Before starting the machine, check the rotation direction and ensure there are no abnormalities. Apply even force while working—avoid applying excessive pressure that could damage the tool or the workpiece.
6. At least two people must be present during operation. One person should be responsible for operating the control box to start and stop the electric wrench safely.
7. When using the wrench, support it properly to avoid contact that might cause the cable to disconnect. Keep the area around the tool clear of unnecessary movement.
8. Maintain a correct and stable posture during work. Stand firmly and align the tool axis with the thread axis to ensure safe and efficient operation.
9. Before turning on the power, double-check that the switch of the tool is in the off position. This helps prevent accidental activation during setup.
10. After the tool has completely stopped, place it in a secure and safe location before unplugging the power cord. This reduces the risk of accidents or damage.
11. When working vertically, at least two people should hold the tool, and a third person should operate it to maintain stability and control.
12. Always have more than one person working together, and ensure that a dedicated supervisor is present to monitor the process continuously.
Lightning Surge Immunity Test Levels:
The severity of lightning surge tests is categorized into levels 1 through 4 and Class X. For the power line differential mode test, the first level parameters were not specified, while the other levels are set at 0.5kV, 1kV, 2kV, and to be determined. For the common mode test, the levels are 0.5kV, 1kV, 2kV, 4kV, and to be determined.
The test level depends on the environment and installation conditions. Here's a general classification:
Level 1: Well-protected environments, such as control rooms in factories or power stations.
Level 2: Protected environments, like factories without strong electromagnetic interference.
Level 3: Ordinary electromagnetic disturbance environments where no special installation requirements are needed, such as standard cable networks in industrial settings or substations.
Level 4: Environments exposed to severe surges, such as overhead power lines or unprotected high-voltage substations.
Class X: Special grade, determined by the user and manufacturer based on specific needs.
When testing a switching power adapter for EMC compliance, the lightning surge test level is typically Level 2 for line-to-line and Level 3 for line-to-ground.
Stay Alert to Surprises
Tag: Electric wrench, Common mode, Operating box, Leakage protector, Action time
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