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RV4140A Datasheet(PDF) 3 Page - Fairchild Semiconductor |
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RV4140A Datasheet(HTML) 3 Page - Fairchild Semiconductor |
3 / 12 page PRODUCT SPECIFICATION RV4140A 3 The value of RSET to meet nominal ground fault tip current specification is: Where: •RSET is in k W • T is the time delay in ms • P is the period of the line frequency in ms •IFAULT is the desired ground fault trip current in mA RMS. • N is the number of sense transformer secondary turns. This formula assumes an ideal sense transformer is used. The calculated value of RSET may have to be changed up to 30% when using a non-ideal transformer. Figure 1. Appliance Leakage Detector Circuit Application R SET 2.05 N ´ I FAULT COS 180 ´ TP ¤ () --------------------------------------------------------------- = 65-4140A-02 Closed Contacts Load Solinoid C3 10 nF Q1 Tag X0103DA RL NE C2 0.02 F m 1 2 3 4 8 7 6 5 RSET C1 10 F Hot Neutral Line Sense Transformer 1:500 Turns Ratio 3 Ring Steel Core RV4140A m Normally Latching Mov RTEST C4 0.1 F m Press to Test 15K 191K 91K |
Similar Part No. - RV4140A_04 |
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Similar Description - RV4140A_04 |
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