1. A three-phase transformer rated for 33 kV/6.6 kV is connected Y- Δ and the protecting current transformer on the low voltage side have a ratio of 400/5. What is the ratio of the current transformer on the high voltage side? Ans 46.19:5 2. A type of electronics communication in which only one party transmits at a time. Half duplex Ans 3. A ...

A 3 phase transformer rated for 33 kV /6.6 kV is connected star/delta and the protecting current transformers on the low voltage side have a ratio of 400/5. Determine the ratio of the current transformers on high voltage side. Draw the connection diagram showing how the relay operates under fault conditions.

Question: A 3 phase transformer rated for 33kv/6.6kv, is connected in star/delta and the protecting current transformer on the low voltage side have a ratio of 400/5.

Question: Three 25 MVA 132 kV/6.35 kV single-phase transformers are connected to form a three-phase delta-y transformer. Nominal power of the three-phase transformer is MVA. Nominal voltage of the HV side of the three-phase transformer is kV. Nominal voltage of the LV side of the three-phase transformer is kV.

Engineering; Electrical Engineering; Electrical Engineering questions and answers; B- A 3 phase transformer rated for 33kv/6.6kv, is connected in star/delta and the protecting current transformer on the low voltage side have a ratio of 400/5.

Question: A three-phase, three winding A/A/Y (1.1 kV/6.6 kV/400 V) transformer is energized from AC mains at the 1.1 kV side. It supplies 900 kVA load at 0.8 power factor lag from the 6.6 kV winding and 300 kVA load at 0.6 power factor lag from the 400 V winding.

A 4,000 kVA, 11 kV / 6.6 kV with 7 % impedance distribution transformer is to be installed to serve an industrial motor pump as illustrated in Figure Q1(b). (i) Identify the percentage, % voltage drop at power transformer secondary terminal during the starting of the large motor.

Question: (20 points) A 3-phase, 9325 KVA, 13.6 kV, 6-pole, Y-connected, 60 Hz, synchronous machine has negligible mechanical and electrical losses. The OC/SC test yields the following result: Values of x2 A I 170 192 VOC) 13 13.6 1.(SC) 391.0000 460.0000 kV line Aline The following is the per-phase model for the open circuit test shown as a ...

Transformer Problem:1: A 3-phase transformer rated for 33 kV/6.6 kV is connected star/delta and the protecting current transformer on the low voltage side have a ratio of 400/5. Determine the ratio of the current transformer on the HV side.

At a certain location in an electric system, the available fault MVA is 400 MVA. A 15 MVA, 34.5 kV 6.24 kV, 2.5% impedance, wye-wye grounded transformer is installed at that location. Determine the short circuit MVA at the secondary . A. 195 MVA C. 90 MVA B. 150 MVA D. 240 MVA