I am in a process of preparing specification for the power transformer - 3 phase, liquid filled, 44kV /4.16kV, 5 MVA.
What will be the Station class arrester rating on LV of the transformer. (Duty cycle ratnig and MCOV rating)
Is there any possibility of the circulating current due to use of the steel reinforcing bars in concrete encased duct structures (Concrete encased duct banks - 4" Dia. PVC Ducts, 3/4" rebars ) ?
Any assistance will be greately appreciated.
Can some one help me what are are the pros and cons of using Circuit Switcher instead Circuit breaker in the MV Substation, 44/13.8 kV.
Can I use Circuit switcher at high side of the power transformer (44/13.8 kV, delta/why)instead of circuit breaker.
Please let me know you want more information.
Forthe underground Medium Voltage specification I have seen the term used, 100% or 133 % insuation and full neutral or 1/3rd neutral.
Can someone help me to understand these terms and applications of it.
Any read up available to understand for these type of the cable details?
How to calculate winding resistance from the known value of the Power transformer's impedance.
impedance is 5.52%, 20MVA, 44/13.8 kV, delta-wye transformer.
