Lus piav qhia luv luv:

Daim ntawv thov

Residual Current Device to leakage in for the prtection, tiv thaiv hluav taws xob ntawm 50Hz lossis 60Hz, ntsuas hluav taws xob ib theem 240V, 3 theem 415V, ntsuas tam sim no txog 63A. Thaum qee tus neeg tau txais hluav taws xob poob lossis qhov seem tam sim no ntawm lub voj voog dhau ntawm tus nqi ruaj khov, RCD tuaj yeem txiav tawm lub zog tsis pub dhau lub sijhawm 0.1s cia li tiv thaiv tus kheej kev nyab xeeb thiab tiv thaiv cov cuab yeej los ntawm kev ua txhaum uas tshwm sim los ntawm qhov seem tam sim no. Nrog rau txoj haujlwm no, RCD tuaj yeem tiv thaiv crcit tiv thaiv overload thiab luv luv Circuit Court los yog siv tau rau lub ufrequunt. Nws ua raws li IEC 898-87 & IEC 755.