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Under what circumstances should motor motors installed on-site be subject to core extraction inspection? (1) Those whose date of manufacture exceeds the manufacturer’s warranty period; (2) Those for which quality is suspected based on visual inspection or electrical testing; (3) Open-type motors for which abnormalities are suspected during end inspections; (4) Those that show abnormal behavior during trial operation.
(1) Those with a manufacture date exceeding the manufacturer’s warranty period； (2) When the quality is suspected based on visual inspection or electrical testing ； (3) When there are suspicions found during end inspection of an open-type motor ； (4) In cases of abnormal conditions during trial operation.
Under what circumstances should on-site installed motors be subjected to a core extraction inspection? Answer: A core pull inspection should be performed on the motor if any of the following conditions apply: (1) The date of manufacture is beyond the warranty period set by the manufacturer ； (2) When the quality is suspected based on visual inspection or electrical testing ； (3) When there are suspicions found during end inspection of an open-type motor ； (4) In cases of abnormal conditions during trial operation.
Under what circumstances should on-site installed motors be subjected to a core extraction inspection? (1) Those with a manufacture date exceeding the manufacturer’s warranty period ； (2) When the quality is suspected based on visual inspection or electrical testing ； (3) When there are suspicions found during end inspection of an open-type motor ； (4) In cases of abnormal conditions during trial operation.
Core extraction inspection should be carried out on the motor if any of the following conditions apply: (1) The date of manufacture is beyond the warranty period set by the manufacturer； (2) When the quality is suspected based on visual inspection or electrical testing ； (3) When there are suspicions found during end inspection of an open-type motor ； (4) In cases of abnormal conditions during trial operation.
A core pull inspection should be conducted on the motor if any of the following conditions apply: (1) The date of manufacture is beyond the warranty period set by the manufacturer； (2) When the quality is suspected based on visual inspection or electrical testing ； (3) When there are suspicions found during end inspection of an open-type motor ； (4) In cases of abnormal conditions during trial operation.
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A core pull inspection should be performed on the motor if it meets one of the following conditions: (1) The date of manufacture is beyond the warranty period set by the manufacturer； (2) When the quality is suspected based on visual inspection or electrical testing ； (3) When suspicious findings are detected during end inspection of an open-type motor ； (4) In cases of abnormal conditions during trial operation.
(1) Those with a manufacture date exceeding the manufacturer’s warranty period； (2) When the quality is suspected based on visual inspection or electrical testing ； (3) When there are suspicions found during end inspection of an open-type motor ； (4) In cases of abnormal conditions during trial operation.
1. Before installing the motor, a core extraction inspection should be carried out if any of the following conditions apply: 1) The date of manufacture is beyond the warranty period set by the manufacturer； 2) Quality cannot be determined through visual inspection and electrical testing ； 3) When the open-type motor shows suspicious signs upon end inspection ； 4) When there are abnormalities during the trial run.
(1) Those with a manufacture date exceeding the manufacturer’s warranty period； (2) When the quality is suspected based on visual inspection or electrical testing ； (3) When there are suspicions found during end inspection of an open-type motor ； (4) In cases of abnormal conditions during trial operation.