RuncoN (A Brand Of Maurya Enterprises)

RuncoN VFD Panel (Variable Frequency Drive Panel)

A VFD panel is an electrical control panel used to control the speed and torque of an AC motor by varying the frequency and voltage of the power supply.

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🔌 What It Does

•             Controls motor speed

•             Saves energy

•             Provides soft start/stop

•             Reduces mechanical stress

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⚙️ Working Principle

It works by changing supply frequency based on the relation:

Ns=120fPN_s = \frac{120 f}{P}Ns=P120f

Where:

•             NsN_sNs = motor speed

•             fff = frequency

•             PPP = number of poles

👉 Increase frequency → speed increases

👉 Decrease frequency → speed decreases

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🔄 Step-by-Step Working

1️⃣ AC to DC Conversion (Rectifier)

•             Input AC supply is converted to DC

2️⃣ DC Link (Filter Section)

•             Capacitors smooth the DC

3️⃣ DC to AC Conversion (Inverter)

•             DC is converted back to AC with variable frequency & voltage

4️⃣ Motor Control

•             Output is supplied to motor → speed is controlled

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🧱 Main Components

•             VFD drive (rectifier + inverter)

•             Control panel (PLC / controller)

•             MCB / MCCB / protection devices

•             Cooling fans

•             HMI (display & control interface)

•             Input/output reactors (optional)

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🔢 Typical Ratings

•             Voltage: 415 V (LT) or higher

•             Power: 0.75 kW to several MW

•             Frequency range: 0–50/60 Hz (or more)