This technical document is intended to cover most aspects related with the installation, operation and maintenance of the ATS-33 Automatic Transfer Switch Controller.
The ATS-33 is a microprocessor-based controller designed for automatic transfer between primary and standby generators. It features a touch screen interface, programmable duty cycles, and monitoring of voltage and frequency. The manual covers operation modes including AUTO, OFF, and Bypass, along with installation and wiring instructions.
The controller includes safety features such as dry-contact alarms for transfer failures and over-cranking, and can be programmed via front panel or remote devices. It supports communication via USB, RS485, or Ethernet and retains settings even during power loss.
| Voltage Adjustment Range | 110–500 Vac (over), 80–470 Vac (under) |
|---|---|
| Frequency Adjustment Range | 51–70 Hz (over), 45–59 Hz (under) |
| Duty Cycle Time Range | 01–999 Hours |
| Transfer Time Delay | 00–250 sec |
| Cool-down Time Delay | 00–250 sec |
| OFF Position Time Delay | 00–99 sec |
Yes, it supports remote programming via USB, RS485, or Ethernet, and can be controlled from a PC or smartphone.
It is designed for a dual generator system with one primary and one standby generator.
The adjustable time delay range is 00 − 250 sec.
The adjustable over voltage range is 110 − 500 Vac.