Schneider Power Factor APFC Relay RT6 6 Step 51207

Schneider Power Factor APFC Relay RT6 (6 Step) – 51207

The Schneider Electric 51207 (Varlogic RT6) is a 6-step Automatic Power Factor Correction (APFC) relay designed to maintain optimal power factor in electrical systems. It automatically switches capacitor banks ON/OFF to improve efficiency, reduce losses, and avoid PF penalties.

⚙️ Product Overview

• Model: 51207
• Series: EasyLogic / Varlogic RT
• Type: APFC Relay / Power Factor Controller
• Steps: 6 Step (controls 6 capacitor stages)
• Operating Voltage: 320–460V AC, 50/60 Hz
• Display: 4-digit LED (7-segment)
• Mounting: Panel mount (approx. 144 × 144 mm)

This relay continuously monitors reactive power demand and adjusts capacitor steps to maintain the desired power factor automatically.

✨ Key Features & Benefits

• ⚡ 6-Step Capacitor Control
  Controls up to 6 capacitor banks for precise PF correction
• 📊 Real-Time Power Factor Monitoring
  Displays PF and system status via LED interface
• 🧠 Smart Switching Algorithm
  Reduces unnecessary switching and stabilizes PF quickly
• 🔄 Multiple Step Programming Options
  Supports various step sequences like 1:1:2:2, 1:2:4:8, linear, etc.
• 🛡️ Built-in Protection Features
  • Over-voltage / under-voltage
  • Over-compensation alarms
  • Low power factor alerts
• ⏱️ Adjustable Time Delay
  10–1800 seconds for switching operations
• 🔧 Auto C/K Setting
  Simplifies commissioning and setup

🏭 Applications

• APFC panels (up to 6 steps)
• Small to medium industrial plants
• Commercial buildings
• MCC / PCC panels
• Electrical distribution systems

⚡ How It Works

1. Measures power factor (cos φ) continuously
2. Compares it with target PF setting
3. Switches capacitor steps ON/OFF
4. Maintains optimal PF automatically

This helps reduce energy losses and avoid utility penalties.

🏆 Why Choose Schneider RT6 (51207)?

The RT6 APFC relay is ideal for small to medium capacitor bank systems (4–6 steps). It offers:

• ✔️ Accurate and stable PF control
• ✔️ Reduced capacitor wear (optimized switching)
• ✔️ Easy setup and reliable operation

Compared to RT8/RT12, it is a more economical choice for smaller APFC panels.