[Q&A Question 343] 2017.12.27
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【Q&A Question 343】December 27, 2017: Under what circumstances should a motor be stopped urgently? When personal safety is at risk ； When the motor is smoking, emitting an unpleasant odor, or catching fire ； When there is significant vibration or axial movement ； The airframe or bearings heat up to their limit ； The motor runs slowly and makes abnormal noises. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) For management purposes, if you need to view content from a few days ago, please go through the summary post below. 2017 Q&A Summary Thread (updates starting now) https://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates starting now) https://bbs.hcbbs.com/thread-1657794-1-1.html 2017 Daily Image Summary Thread https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1875160 2017 LNG Version Daily Question List https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1804162 2016 Q&A Summary Thread (updates completed) https://bbs.hcbbs.com/thread-1597792-1-1.html
A. When personal safety is at risk B. When the motor starts smoking, emitting an odor, or catching fire C. When severe vibration or axial movement occurs D. When the temperature of the motor body or bearings is excessively high E. When the motor speed is abnormal
1: When personal safety is at risk. 2: When the motor is smoking, emitting an odor, or catching fire. 3: When there is significant vibration or axial movement. 4: The fuselage or bearings heat up to their limit. 5: The motor rotates slowly and makes abnormal noises
① Times when personal safety is at risk. ② When the motor is smoking, emitting an odor, or catching fire. ③ When there is significant vibration or axial shunting. ④ The body or shaft heats up to its limit. ⑤ The motor rotates slowly and makes abnormal noises
1. When personal safety is at risk. 2. When the motor starts smoking, emitting an unpleasant odor, or catching fire. 3. When there is severe vibration or axial movement. 4. When the temperature of the motor housing or bearings is excessively high. 5. When the motor speed is abnormal
When personal safety is at risk； When the motor is smoking, emitting an unpleasant odor, or catching fire ； When there is significant vibration or axial movement ； The airframe or bearings heat up to their limit ； The motor runs slowly and makes abnormal noises.
An emergency stop is definitely necessary in the event of an accident
① Times when personal safety is at risk. ② When the motor is smoking, emitting an odor, or catching fire. ③ When there is significant vibration or axial shunting. ④ The body or shaft heats up to its limit. ⑤ The motor rotates slowly and makes abnormal noises
(1) Sparks occur or smoke is emitted after the motor starts, along with an odor of burning insulation. (2) The rotational speed drops sharply, and the temperature of the motor casing rises. (3) The motor is powered by a single-phase supply. (4) Bearing overtemperature. (5) Severe vibration, abnormal sound.
① Times when personal safety is at risk. ② When the motor is smoking, emitting an odor, or catching fire. ③ When there is significant vibration or axial shunting. ④ The body or shaft heats up to its limit. ⑤ The motor rotates slowly and makes abnormal noises.
1: When personal safety is at risk. 2: When the motor is smoking, emitting an unpleasant odor, or on fire. 3: When there is significant vibration or axial movement. 4: The fuselage or bearings heat up to their limit. 5: The motor rotates slowly and makes abnormal noises.