深海防爆
1. 繞組短路
呢種故障主要係由於繞組絕緣受損引起嘅, 導致相鄰綫圈之間短路. 呢種短路會增加電流，甚至會導致電機燒毀. 用于單相電機, 斷開外部連接並使用電阻設置中嘅萬用錶嚟測量端子C之間嘅電阻至關重要, S, C, R. 讀數低於標準值表示繞組短路, 需要更換受影響嘅線圈. 用于三相電機, 端子之間嘅電阻應使用設置為R×10嘅萬用表進行測量. 相等嘅電阻表明電機處於良好狀態. 任何一對端子之間嘅電阻值非常低表示短路, 而無限電阻表示繞組燃盡.
2. 繞組開路
For addressing an open circuit in the winding of an explosion-proof air conditioner’s compressor motor, firstly disconnect the external wiring. 然之後, measure the resistance between the C, R, 同C, S terminals. An infinite resistance reading confirms the presence of an open circuit, requiring prompt repair.
3. Winding Grounding
This fault typically occurs when the wire with damaged insulation makes contact with the compressor’s casing. To diagnose, use a multimeter set to resistance to check the resistance; one probe should contact the terminal face, while the other should touch the metal part exposed on the process pipe. A minimal resistance reading indicates 接地, necessitating the opening of the casing for insulation rectification.
4. Relay Malfunction
Issues often arise from uneven or sticky contacts and need immediate attention. 解決方法包括打開繼電器並用細砂紙平滑觸點. 在嚴重損壞的情況下, 建議及時更換.
5. 三相壓縮機啟動失敗
以下是此問題的可能原因和解決方案:
1. 較細的電源線在啟動過程中會導致顯著的電壓降，因此需要使用合適的布線.
2. 電源線中嘅相位故障或內部破損.
3. 接觸器中三相觸點的異步閉合.
4. 過熱和過載 防爆冷氣 發動機. 長時間嘅高溫會加熱電機嘅定子繞組, 損壞其絕緣層並縮短其使用壽命.
通常, 排氣壓力過大, 電機通風不足, 或高環境溫度是導致防爆空調電機故障的罪魁禍首.