RuncoN (A Brand Of Maurya Enterprises)

RuncoN VCB Panel (Vacuum Circuit Breaker Panel)

A VCB panel is high-voltage switchgear panel that uses a Vacuum Circuit Breaker (VCB) to protect and control electrical systems.

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🔌 What It Does

•           Switch ON/OFF electrical circuits

•           Interrupt fault currents (short circuit, overload)

•           Protect transformers, motors, and feeders

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⚙️ Working Principle

The VCB operates using vacuum as the arc quenching medium.

•           When contacts open, an arc forms

•           In vacuum, there is no ionized medium, so the arc extinguishes quickly

•           This makes interruption fast and efficient

👉 Based on the concept of arc quenching

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🔄 Step-by-Step Working

1️⃣ Normal Condition

•           Breaker is closed → current flows normally

2️⃣ Fault Occurs

•           Overcurrent/short circuit detected by relay

3️⃣ Tripping

•           Protection relay sends signal to VCB

4️⃣ Arc Interruption

•           Contacts open

•           Arc is extinguished in vacuum

5️⃣ Isolation

•           Faulty section is disconnected safely

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🧱 Main Components

•           Vacuum Circuit Breaker (VCB)

•           Protection relays

•           Current Transformers (CTs)

•           Potential Transformers (PTs)

•           Busbars

•           Control & protection wiring

•           Panel enclosure

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🔢 Typical Ratings

•           Voltage: 3.3 kV, 6.6 kV, 11 kV, 33 kV

•           Breaking capacity: 25 kA – 50 kA

•           Frequency: 50 Hz

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🏭 Applications

•           Distribution substations

•           Industrial plants

•           Transformer protection

•           Motor feeders

•           Capacitor banks (HT APFC panels)