- Three Phase Systems 1 In Between The Terminals L1 L2 And L3 Of A Rotary Current Network 400v Can Be Measured What 1 (10.32 KiB) Viewed 28 times
- Three Phase Systems 1 In Between The Terminals L1 L2 And L3 Of A Rotary Current Network 400v Can Be Measured What 2 (10.61 KiB) Viewed 28 times
- Three Phase Systems 1 In Between The Terminals L1 L2 And L3 Of A Rotary Current Network 400v Can Be Measured What 3 (9.65 KiB) Viewed 28 times
- Three Phase Systems 1 In Between The Terminals L1 L2 And L3 Of A Rotary Current Network 400v Can Be Measured What 4 (13.42 KiB) Viewed 28 times
- Three Phase Systems 1 In Between The Terminals L1 L2 And L3 Of A Rotary Current Network 400v Can Be Measured What 5 (8.13 KiB) Viewed 28 times
- Three Phase Systems 1 In Between The Terminals L1 L2 And L3 Of A Rotary Current Network 400v Can Be Measured What 6 (8.11 KiB) Viewed 28 times
2. A water heater can be connected in wye-or delta-connection to three-phase system 230/400V. The resistance of the heating elements is 250 each. a) What is the current in each heater when they are connected in wye? (9.2A) b) Which current flows in each heating element for a delta-connection? (16A)
3. What power do the 3 heating elements from task 2 have together: a) In a wye-connection? (6.4kW) b) In a delta-connection? (19.2kW)
4. You have to design a water heater at a rotary current system 230/400V. The delta-connection must provide 12kW power. a) What resistance do the resistors have to possess? (4022) b) What power does this water heater have in a wye-connection? (4kW)
5. Which current flows in the supply lines to the water heater from Task 4: a) In a wye-connection? (5.77A) b) In a delta-connection? (17.32A)
6. How much power can the water heater from Task 4 still provide, even if one phase fails: a) In a wye-connection with and without neutral? (without neutral 2kW. with neutral 2.667kW) b) In a delta-connection? (6kW)