1. What is a 2.2 kW 3 Phase Motor Current Calculator?

Definition: This calculator estimates the current drawn by a 2.2 kilowatt 3-phase electric motor based on voltage and power factor.

Purpose: It helps electricians and engineers determine the electrical current requirements for motor installations and circuit design.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( I \) — Current in amperes (A)
• \( V \) — Voltage in volts (V)
• \( PF \) — Power factor (unitless, typically 0.8-0.95)
• \( \sqrt{3} \) — Constant for 3-phase power calculations

Explanation: The formula converts kW to watts (×1000), then divides by the product of voltage, power factor, and √3 (1.732) for 3-phase systems.

3. Importance of Motor Current Calculation

Details: Proper current estimation ensures correct wire sizing, circuit breaker selection, and prevents electrical system overloads.

4. Using the Calculator

Tips: Enter the line voltage (typically 400V for industrial systems) and power factor (default 0.9). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is the power factor important?
A: Power factor represents efficiency of power usage. Lower PF means higher current for same real power.

Q2: What's a typical voltage for 3-phase motors?
A: Common voltages include 208V, 400V, 480V, or 600V depending on regional standards.

Q3: What if my motor has a different power rating?
A: Use our general 3-Phase Motor Current Calculator for other power ratings.

Q4: Does this include startup current?
A: No, this calculates running current. Startup current is typically 5-7 times higher.

Q5: How accurate is this calculation?
A: It provides theoretical value. Actual current may vary due to load conditions and motor efficiency.