WESPC Original HAT553 Dual Power ATS Controller Auto Start Genset Panel

Technical Specifications:

• Display: 132×64 pixel LCD

• Language Interface: Chinese & English

• Programmable Inputs: 4 channels

• Programmable Outputs: 6 channels

• AC System Support: 1P2W / 2P3W / 3P4W

• Alternator Frequency: 50Hz / 60Hz

• Voltage & Frequency Protection: Supported

• Monitoring Interface: RS485

• Programming Interface: RS485

• Real-Time Clock (RTC): Integrated

• Scheduled Genset Start: Supported

• Applicable Switch Types: Two-stage / Three-stage

• Controller Dimensions: 139 × 120 × 50 mm

• Panel Cutout Size: 130 × 111 mm

• Operating Temperature Range: –25°C to +70°C

Product Overview:

The HAT552/HAT553 Dual Power ATS Controller is a high-performance automatic transfer module that integrates configurable logic, real-time measurement, LCD display, and digital communication. It combines digital intelligence and networking to automate power switching and reduce manual errors—making it an ideal solution for dual power systems.

• HAT552 is designed for non-breaking switches

• HAT553 supports non-breaking, one-breaking, and two-breaking switch types

Powered by a microprocessor, the controller accurately measures dual 3-phase voltages and responds to abnormalities such as over/under voltage, phase loss, frequency deviation, and reverse phase sequence. Its compact structure, advanced circuitry, and simplified wiring make it highly reliable and suitable for applications in power systems, telecom, petroleum, coal, metallurgy, railways, municipal infrastructure, and smart buildings.

Performance & Features:

• System modes configurable for:

  • Mains → Generator

  • Generator → Mains

  • Mains → Mains

• 132×64 backlit LCD with Chinese/English interface and push-button operation

• Real-time measurement of dual 3-phase voltage, frequency, and phase sequence

• Displays accumulated close times for A/B power sources

• Tracks current power supply duration and total runtime for A/B sources

• Protection functions include:

  • Over/under voltage

  • Phase loss

  • Reverse phase sequence

  • Over/under frequency

• Auto/Manual transfer modes with manual override for switch control

• All parameters are user-configurable with password protection to prevent unauthorized access

• On-site commissioning supported for manual genset start/stop

• Built-in switch re-closing function

• Breaker output configurable as pulse or continuous signal

• Dual-channel neutral wire isolation design

• RTC display and event log memory (up to 50 cyclic records)

• Scheduled genset start/stop: configurable for monthly/weekly cycles with on-load/off-load options

• AC input range: phase voltage (L–N) 170–277V

• RS485 isolated communication port with ModBus-RTU protocol

  • Supports remote control, monitoring, communication, and parameter adjustment

  • Remote commands include genset start/stop and ATS close/open

• Compatible with multiple AC systems:

  • 3-phase 4-wire

  • Single-phase 2-wire

  • 2-phase 3-wire

• Modular design with flame-retardant ABS enclosure

• Pluggable terminals and embedded mounting for easy installation