More Related Content
More from Raymund Cortez (14)
Calculation exaple for x to r ratio
- 1. Example,
Trihal standardlossestype transformer,withelectrical dataasgivenbelow:
1) Calculationof R%:
R% = 100 x [(Full load loss (W)-no load loss (W))/(transformer rated power (kVA)x1000)]
= 100 x [(12300 (W)-2800 (W))/(1600 (kVA)x1000)]
= 0.594 %
2) Then, using the impedance relation; Z = √ (R² + X²), we can calculateX% to be:
X% = √ (Z%² - R%²) = √ (6² - 0.594²)
= 5.97 %,
Hence X/R = X%/R% = 5.97 / 0.594 = 10.05
![Example,
Trihal standardlossestype transformer,withelectrical dataasgivenbelow:
1) Calculationof R%:
R% = 100 x [(Full load loss (W)-no load loss (W))/(transformer rated power (kVA)x1000)]
= 100 x [(12300 (W)-2800 (W))/(1600 (kVA)x1000)]
= 0.594 %
2) Then, using the impedance relation; Z = √ (R² + X²), we can calculateX% to be:
X% = √ (Z%² - R%²) = √ (6² - 0.594²)
= 5.97 %,
Hence X/R = X%/R% = 5.97 / 0.594 = 10.05](https://image.slidesharecdn.com/calculationexapleforxtorratio-190316231043/85/calculation-exaple-for-x-to-r-ratio-1-320.jpg)
