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Key points for on-site inspection of explosion-proof electrical equipment

Explosion-proof electrical equipment refers to electrical equipment used in environments where explosive gas mixtures may occur. In order to ensure the safe operation of explosion-proof electrical equipment, on-site inspection is an essential task. The following are the key points for on-site inspection of explosion-proof electrical equipment:


1. Equipment nameplate


Check whether the equipment nameplate includes necessary information such as equipment name, model, scope of use, rated parameters, etc. The nameplate should be clear, durable and easy to read.


2. Equipment type


Confirm the type of equipment being inspected, such as resistors, capacitors, transformers, etc. Different types of equipment have their own specific inspection requirements, and you must be familiar with the relevant specifications for inspection.


3. Shell integrity


Check the integrity of the shell, including sealing, insulation, etc. The equipment shell should be free of cracks, damage, and good sealing to ensure that the equipment will not be affected by the external environment during operation.


4. Anti-leakage measures


Check whether the anti-leakage measures are complete and meet the specifications. For equipment with oil level, check whether the oil level gauge is intact and accurate to prevent abnormal operation of the equipment due to too low or too high oil level.


5. Ventilation and exhaust system


Check whether the ventilation and exhaust system is complete to ensure the normal operation of the equipment. The vents should be clean and unobstructed, and the exhaust ports should be equipped with devices to prevent rainwater from entering.


6. Inlet sealing


Check the sealing of the inlet to prevent foreign objects from entering and causing equipment failure. The inlet should be equipped with appropriate seals to ensure good sealing.


7. Line sealing and protection


Check whether the line sealing is complete and whether the protection measures meet the specifications to ensure the normal operation of the line. The lines should be arranged neatly, without damage, and the seals are complete and intact.


8. Wiring project


The wiring project should be carried out in accordance with the specifications to avoid leaving safety hazards. Check whether the direction, fixation and insulation of the line meet the requirements.


9. Grounding measures


Check whether the grounding measures meet the specifications to ensure the normal operation of the equipment. Electrical equipment should be grounded in accordance with regulations, the grounding wire should be intact, and the grounding resistance should meet the requirements.


10. Data submission


The data submission should be complete, including instructions, certificates, warranty cards, etc. The data should be complete, clear and easy to read.


Summary:


The key points of on-site inspection of explosion-proof electrical equipment include equipment nameplate, equipment type, shell integrity, oil leakage prevention measures, ventilation and exhaust system, cable entry seal, line seal and protection, wiring engineering and grounding measures, and data submission. For each aspect, the inspector should be familiar with the relevant specifications and conduct detailed inspections in accordance with the requirements to ensure the safe operation of explosion-proof electrical equipment.


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