Motor Starting Calculation Record (Excel)
Free download · Excel (.xlsx)
Record motor starting calculations systematically with this Excel template. Captures motor data (tag, power, voltage, FLC), starting method (DOL/Star-Delta/VFD/Soft Starter), starting current multiplier, voltage drop during start, cable sizing, and protection device settings. Includes locked rotor current and NEC code letter fields. Essential for verifying motor starting does not cause excessive voltage dip on the supply system. Use alongside ECalPro's motor current calculator for standards-compliant results.
What's Included
How to Print
- ●Open in Microsoft Excel 2016+, Google Sheets, or LibreOffice Calc
- ●Add your company logo and project details to the header
- ●Copy data rows to add more circuits or equipment
- ●Print on A4 or A3 landscape for site records
- ●Keep completed records for design verification and audit trail
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Frequently Asked Questions
What is a motor starting calculation record?
A motor starting calculation record documents the analysis of motor starting conditions — starting current, voltage drop, and protection settings — per IEC 60034 and NEC Article 430. It verifies that motor starting will not cause excessive voltage dip or nuisance tripping.
What should a motor starting calculation record include?
Key fields include motor tag, rated power and voltage, starting method (DOL/Star-Delta/VFD/Soft Starter), starting current multiplier, starting current in amps, voltage drop during start, cable size, protection device type and rating, overload setting, and locked rotor current.
What is the maximum acceptable voltage drop during motor starting?
Most standards recommend limiting voltage dip during motor starting to 10–15% at the motor terminals and 3–5% at the supply bus. IEC 60034 and IEEE 3002.7 provide guidance. Excessive voltage dip can cause contactors to drop out and affect other connected loads.