ACS355-03E-04A1-4變頻器
什麼是過功率保護?
答:除了額定功率之外,還有一個數據,叫“過載保護”,英文叫“OPP”。過載保護指電源的負載持續上升,達到某個點了,電源就自動斷電,以免出現過流損壞電源或者電腦的其他部件。OPP值通常是額定功率的1.3倍左右,有些廠商把OPP設得太高,其實是不的。在額定功率和OPP之間,會有一個區間,比如,新冷鑽額定功率300W,OPP為370W,那麼,300-370W之間的這個區域就是一個“盲區”。如果在這個區間停留的時間過長(一般可以持續數十秒時間),很可能導致電源或電腦的其他部件燒毀。
ACS355-03E-04A1-4變頻器
電動機起動困難,額定負載時,電動機轉速低於額定轉速較多
1.故障原因 電源電壓過低; 面接法電機誤接; 轉子開焊或斷裂; 轉子局部線圈錯接、接反; 修復電機繞組時增加匝數過多; 電機過載。
2.故障排除 測量電源電壓,設法改善; 糾正接法; 檢查開焊和斷點並修復; 查出誤接處予以改正; 恢復正確匝數; 減載。
ACS355-03E-04A1-4變頻器
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