Use this worksheet to carry current range and meter requirements into a shunt-resistor check. Record resistance, power, rating, tolerance, and thermal conditions before installation.
Measurement requirements
| Item | Record | Source / notes |
|---|---|---|
| Project name | Project record | |
| Current range (A) | Enter project value | |
| Meter input range (mV or V) | Enter project value | |
| Target shunt voltage drop (mV) | Enter project value |
Resistor selection
| Item | Record | Source / notes |
|---|---|---|
| Calculated shunt resistance (ohm) | Record result | |
| Power dissipation (W) | Record result | |
| Selected resistor rating (W) | Record source or method |
Review record
| Item | Record | Source / notes |
|---|---|---|
| Accuracy or tolerance (%) | Record source or method | |
| Thermal or enclosure note | Record source or method | |
| Review notes | Project record | |
| Date | Project record |
Before you use this worksheet
- Target current range, meter input range, desired voltage drop, resistance, and power dissipation are recorded from the measurement design.
- Accuracy, heating, enclosure conditions, isolation, fault energy, and instrument ratings can control whether a shunt is suitable.
- Final selection should be verified against manufacturer data and qualified design review.
How to use this worksheet
Use the fields in order: record the project inputs, enter the calculation or field results, then document the source, review notes, and final selection.
FAQs
Why record power dissipation?
A shunt resistor can heat significantly at high current. Record the calculated power and compare it with the selected resistor rating and installation conditions.