Mechanical Injury Prevention:
1. Before using the wrench, ensure it is a certified and qualified tool. Check for proper labeling or certification to confirm its reliability.
2. Inspect all mechanical transmission components before use. Make sure all nuts are securely tightened and that the tool has passed safety testing before operation.
3. Always unplug the power source before replacing or adjusting the wrench to avoid accidental activation.
4. Securely fasten the wrench during use. Hold it firmly with both hands, and in special cases, lift and stabilize it to prevent detachment or slippage, which could cause injury.
5. Before starting the machine, determine the direction of rotation. Confirm there are no abnormalities before beginning work. Apply even pressure and avoid excessive force to prevent damage or malfunction.
6. At least two people should be present during operation. One person must operate the control box to start and stop the electric wrench safely.
7. When using the wrench, make sure it is properly supported. Avoid touching the tool to prevent cable disconnection or electrical hazards.
8. Maintain a correct and stable posture while working. Ensure your body is steady, and align the tool axis with the thread axis for better control and safety.
9. Before turning on the power, double-check that the tool’s switch is in the off position. This helps prevent unexpected startup and potential accidents.
10. After the tool has completely stopped, place it in a safe and secure location before unplugging the power. This reduces the risk of accidental contact or damage.
11. When working vertically, at least two people should hold the tool, and a third person should be responsible for operating the device to maintain stability and control.
12. Always have more than one person working together. Assign a dedicated supervisor to monitor the process continuously and respond to any issues immediately.
Lightning Surge Immunity Test Levels:
The severity of lightning surge tests is categorized into levels 1 through 4 and X. For differential mode tests on power lines, specific first-order parameters were not provided, while the remaining levels are 0.5kV, 1kV, 2kV, and to be determined. In common mode tests, the values are 0.5kV, 1kV, 2kV, 4kV, and also 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 disturbances, 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 levels are typically Level 2 for line-to-line and Level 3 for line-to-ground.
Stay alert for unexpected situations
Tag: Electric wrench, Common mode, Operating box, Leakage protector, Action time
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