Voltage Drop calculation for sounder:
প্রথমে একটি Sounder এ কী পরিমান কারেন্ট নেয় তা নির্নয় করতে হবে।
Sounder Amp: 0.041 Amp [ from data sheet]
তারপরে Sounder কয়টা আছে তা দিয়ে amp গুন করতে হবে: 11 টি Sounder আছে 11x 0.041= 0.0451 Total operating current.
NAC LLT Cable distance measure :
Cable distance আছে 870 feet,
Cable internal resistance 2.433 ohms/1000 ft [ wire resistance is taken from datasheet of LLT cable 2.433 Ohm per 1000 ft],
supply voltage: 20.40 DC
Total resistance ohms :
= (Length X 2)/1000 X Ohms per 1000 ft
={(870×2)/1000}x2.433 = 4.233 total resistance ohms.
Voltage last device of circuit:
=Supply voltage – ( Alarm current X Total Resistance)
=20.40 – (0.0451x 4.233)
= 20.209
Voltage Dropped: 20.40-20.209= 0.1909
% of voltage Drop: 0.1909 X 100/20.40= 0.94 ℅
If you have any question, please comment, thank you.
