Understanding SCR Voltage Regulator Circuit Diagrams with ZKG-2000 and SSR-DV

✅ Introduction

The ZKG-2000 SCR voltage regulator is widely used in industrial heating applications for precise voltage control. When paired with a solid state relay (SSR-DV), it becomes a reliable system for managing power to resistive loads like heaters. This guide walks you through the wiring diagrams for both single-phase and three-phase applications, and clarifies the function of each terminal.

 View ZKG-2000 SCR Voltage Regulator Product Page
 View SSR-DV Solid State Relay Product Page

⚙️ Single-Phase Wiring Diagram

Components:

• ZKG-2000 SCR Voltage Regulator
  
• SSR-DV Thyristor Module
  
• FU: Fast Fuse
  
• LOAD: Resistive Heater
  

Terminal Explanation:

• G = Gate terminal, used to trigger SSR (not Ground)
  
• T1 = Trigger signal
  
• N = Neutral wire
  
• L = Live wire
  

Connection Steps:

1. Connect G on ZKG-2000 to pin 4 on SSR-DV (Trigger +).
   
2. Connect T1 on ZKG-2000 to pin 3 on SSR-DV (Trigger -).
   
3. Connect L to one SSR output terminal and fuse to the LOAD.
   
4. Connect N to ZKG-2000 and SSR power side.
   

✅ Three-Phase Wiring Diagram

For three-phase loads, three ZKG-2000 controllers and three SSR-DV modules are needed — one per phase.

Each Phase:

• Separate ZKG-2000 for phase A, B, C
  
• SSR-DV output controls each load line
  
• Each G and T1 connects to the corresponding SSR module
  

Important: Ensure load balance across phases and trigger each SSR independently.

✅ Tips for Wiring

• G ≠ Ground: G is a gate signal output for triggering SSR, not a grounding pin.
  
• Use fuses on each load line to protect SSR from overcurrent.
  
• Ensure all terminal connections are firm and labeled.
  
• For safety, test each phase independently before full system activation.
  

✅ Conclusion

With proper wiring of ZKG-2000 to SSR-DV and understanding the terminal functions, precise voltage control becomes easy and efficient. This setup ensures safety, modular expansion, and high compatibility with resistive loads.

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