Ground Fault Calculator
Calculate ground fault current, fault resistance, and protective device coordination. Essential tool for electrical engineers and safety professionals.
Step 1: System Parameters
Understanding Ground Faults
A ground fault occurs when an unintended connection between an energized conductor and ground exists. Proper calculation helps determine protective device settings and ensures electrical safety.
Step 2: Protective Device Settings
About Ground Fault Protection
Ground fault protection devices are designed to detect low-level fault currents that may not be detected by standard overcurrent devices. Proper coordination prevents equipment damage and reduces shock hazards.
Ground Fault Calculation Results
Calculated Ground Fault Current
Protective Device Comparison
| Device Type | Trip Setting | Fault Current | Trip Time | Coordination |
|---|
Time-Current Characteristic Curve
Ground Fault Calculation Formula
I_fault = V_system / (Z_source + R_fault)
The ground fault current is calculated by dividing the system voltage by the sum of source impedance and fault resistance. For three-phase systems, appropriate conversion factors apply based on grounding type.
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