Four Fast Transformer Calculations
Distribution transformer calculations spreadsheet provides fast calculations for the following: Determining the MV/LV transformer rating, calculating overcurrent protection device rating on the low voltage side of the transformer, calculating the prospective short circuit current and Calculating natural ventilation openings sizes required for the transformer room.
1. Determining the MV/LV transformer rating
Input parameters:
- Primary rated voltage (kV.)
- Secondary rated voltage (kV.)
- Max. demand load (kW)
- Power factor after correction
- Transformer type
- Permissible loading percentage (%)
- The nearest standard transformer rating (KVA)
2. Calculating overcurrent protection device rating on the low voltage side of the transformer
3. Calculating the prospective short circuit current across the low voltage side of the transformer
4. Calculating natural ventilation openings sizes required for the transformer room.
| Software: | Distribution Transformer Calculations – MS Excel Spreadsheet |
| Version: | – |
| Developer: | Mahmoud Salama |
| Size: | 278 KB |
| Price: | FREE |
| Download: | Right here | Video Courses | Membership | Download Updates |
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Could anyone share the password of this Distribution Transformer Calculation sheet? It’s in protected mode. Need to unprotect it to understand calculations…
Thanks
Useful. However some basic mistakes are there like the unit of Impedance has been given in Ohm.mile which could not be correct. It should be just Ohm. Further the bottommost table(left side) is presented in a way which can not be called user friendly and technically not correct also.
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CT/ VT calculations
Breaker sizing
Cable rating calculation
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This is so helpful. Thank you for this.
But is would be better if you can define the terms use next time because of beginners. Thank you once again.
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How can i down load the templates