1. What is a Secondary Voltage Drop Calculator?

Definition: This calculator determines the voltage drop in the secondary side of a transformer or circuit based on current and resistance.

Purpose: It helps electrical engineers and technicians ensure proper voltage levels in secondary circuits.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( VD \) — Voltage drop (volts)
• \( I \) — Current flowing through the circuit (amps)
• \( R_{secondary} \) — Resistance in the secondary circuit (ohms)

Explanation: The voltage drop is directly proportional to both the current and the resistance in the secondary circuit.

3. Importance of Voltage Drop Calculation

Details: Proper voltage drop calculation ensures equipment receives adequate voltage and helps prevent power quality issues.

4. Using the Calculator

Tips: Enter the current in amps and the secondary resistance in ohms. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What causes voltage drop in secondary circuits?
A: Voltage drop occurs due to the resistance of conductors and connections in the circuit.

Q2: What's an acceptable voltage drop percentage?
A: Typically 3-5% of the nominal voltage is acceptable for most applications.

Q3: How do I measure secondary resistance?
A: Use an ohmmeter or calculate it using conductor material, length, and cross-sectional area.

Q4: Does this calculator work for AC and DC circuits?
A: This formula works for DC circuits. For AC, you would need to consider impedance (Z) instead of just resistance.

Q5: How can I reduce voltage drop?
A: Use larger conductors, reduce circuit length, or decrease the load current.