Cara Merakit Panel ATS (Automatis Transfer Switch) PLN ke Genset Dengan Kontaktor

Introduction

This tutorial provides a step-by-step guide on assembling an Automatic Transfer Switch (ATS) panel that connects PLN (Perusahaan Listrik Negara) to a generator using contactors. This system is commonly used in businesses to ensure a seamless transition between the main power supply and a backup generator, enhancing reliability and safety.

Step 1: Gather Tools and Materials

Before starting the assembly, ensure you have all the necessary tools and materials:

• Kontaktor Inscom N25 (2 NO, 2 NC, 3 Phase coil 220 VAC)
• Schneider Kontaktor (1 NO, 1 NC, 3 Phase Coil 220 VAC)
• TDR Omron On Delay
• Relay Omron MK2P (220 VAC)
• MCB (Miniature Circuit Breaker)
• Pilot Lamp
• NYAF 1.5 mm cables
• Screwdriver
• Wire strippers
• Multimeter (for testing)

Practical Tip

Double-check that all components are rated for 220 VAC to ensure compatibility and safety.

Step 2: Prepare the Panel

• Choose a suitable enclosure: Select a panel box that can accommodate all components and has space for wiring.
• Mount the contactors: Securely install the Inscom and Schneider contactors inside the panel.
• Install the MCB: Position the MCB in a convenient location within the panel.

Practical Tip

Ensure that the mounting is stable and that there is adequate ventilation to prevent overheating.

Step 3: Wiring the Components

• Connect the contactors:

  • Link the Inscom contactor's NO (normally open) and NC (normally closed) terminals to the corresponding outputs.
  • Connect the Schneider contactor similarly.

• Wiring the relay:

  • Connect the relay's coil to the control circuit.
  • Ensure that the relay is properly connected to the TDR for timing functions.

• Connect the pilot lamp:

  • Wire the pilot lamp in parallel with the MCB for status indication.

Common Pitfall to Avoid

Ensure that all connections are secure and correctly wired to prevent shorts or malfunction. Use a multimeter to check connections before powering the system.

Step 4: Testing the System

• Initial power-up:

  • After wiring, power up the panel and check the pilot lamp for functionality.
  • Use the multimeter to check voltage levels at various points to ensure everything is functioning within specifications.

• Simulate power failure:

  • Disconnect the main power supply to test the ATS's automatic switching to the generator.
  • Observe if the generator starts and if the load is transferred correctly.

Practical Tip

Perform this test multiple times to ensure reliability before relying on the system for actual power interruptions.

Conclusion

Assembling an ATS panel with contactors is a crucial skill for ensuring reliable power management. By carefully gathering materials, accurately wiring components, and thoroughly testing the system, you can create a safe and efficient ATS setup. For further learning, consider exploring more advanced configurations or additional features like timers or inverter integrations. Always prioritize safety and compliance with electrical standards when working with such systems.