एक अति-धारा रिले की धारा सेटिंग 120% है। यदि रेटेड प्राथमिक धारा और करंट ट्रांसफॉर्मर का ट्रांसफॉर्मेशन अनुपात 200 A और 100 है, तो इसकी पिक-अप धारा क्या है?

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MPPGCL JE Electrical 28 April 2023 Shift 3 Official Paper
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  1. 1.2 A
  2. 240 A
  3. 120 A
  4. 2.4 A

Answer (Detailed Solution Below)

Option 4 : 2.4 A
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सिद्धांत

रिले की पिक-अप धारा की गणना इस प्रकार की जाती है:

Ipickup=धारा सेटिंग100×Is

CT की द्वितीयक धारा ट्रांसफॉर्मेशन अनुपात का उपयोग करके निर्धारित की जाती है:

Is=IpCT अनुपात

गणना

दिया गया है, धारा सेटिंग = 120%

रेटेड प्राथमिक धारा = 200 A

CT अनुपात = 200:100

Is=200100=2

Ipickup=120100×2

Ipickup=2.4 A

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