A wide range of high quality controllers for various power applications

SmartGen HMAT880 Medium Voltage Bypass ATS Controller

* All prices on this website are retail in USD on EXW incoterms


Technical Parameters:
Display  LCD(240*128)
Language  Chinese & English & Others
Programmable Input  12
Programmable Output  13
AC System  1P2W/2P3W/3P3W/3P4W
Alternator Frequency  50/60Hz
Current and Power Display  ●
Over Current Warn  ●
Volt Freq Protection  ●
Monitor Interface  RS485
Programmable Interface  RS485
RTC(Real Time Clock)  ●
Circulate Start Genset  ●
DC Supply  DC12V/24V/48V
Case Dimensions(mm)  260*180*54
Panel Cutout(mm)  242*161
Operating Temp.  (-25~+70)℃

Product Overview:
HMAT880 Medium Voltage Bypass ATS Controller is a module that integrates programmable function, automatic measurement, PT break detection, load stepwise switch, LCD display and digital communication. It combines digital, intelligent and network technology, realizes automation of measurement and control process, thus reducing manual operation error, which is an ideal product for medium voltage bypass transfer.

HMAT880 Medium Voltage Bypass ATS Controller is composed of microprocessor as the core, which can precisely detect 2-way 3-phase incoming voltage, make accurate judgment for voltage abnormal situations (over/under voltage, over/under frequency, loss of phase, reverse phase sequence) and output passive control coil. It fully considers various applications in bypass switch and can be directly used for single bypass, dual bypass switch, also for manual/remote control switch. With compact structure, advanced circuits, simple wiring and high reliability, it can be widely used in electric device, server supply and debugging system of electric power, telecom, petrochemical industry, mining, railways, municipal administration, data center, intelligent building and other industries.


1. System type can set as: S1 Mains S2Mains, S1 Mains S2 Gen, S1 Gen S2 Mains, S1 Gen S2 Gen;

2. 4.3-inch single color 240x128 LCD display with white backlight, multilingual interface (Simplified Chinese, English, other), push-button operation;

3. Collect and display 2-way 3-phase voltage, frequency and phase;

4. Collect and display load active power, reactive power, apparent power, power factor and 2-way current;

5. Display main breaker position status (work position, test position, isolation position), bypass breaker position status (work position, test position, isolation position);

6. PT break detection function, whether PT wire is broken can be judged by measured voltage and current data and PT break status can be obtained by digital input ports;

7. Load stepwise switch function, can realize current unit and external stepwise switch control. With current unit stepwise switch control, stepwise switch control of 24 load breakers can be realized, the priority of each load breaker can be flexibly set, close feedback status, work position status, test position status and trip status of each load breaker can be detected;

8. Six 16-way digital input modules and three 16-way digital output modules can be expanded via RS485 interface;

9. Bustie control function, suitable for 4-incoming 2-bustie application scheme (realize by two HMAT880 modules);

10. Earth fault protection function;

11. S1/S2 independent overcurrent warning or trip alarm function;

12. Forced open, PT break, communication failure, earth fault alarm functions;

13. NEL trip function;

14. Display S1/S2 accumulated active energy, reactive energy;

15. Display S1/S2 accumulated close times of main breaker and bypass breaker;

16. Display current continuous supply time, last continuous supply time and S1/S2 accumulated supply time;

17. For energy storage breaker, it can close after PF (close is ready) signal is active;

18. Over/under voltage, over/under frequency, overcurrent, loss of phase, reverse phase sequence function;

19. Auto/manual transfer, manually control breaker close/open in manual mode;

20. All parameters can be configured on site. Passwords authentication ensures authorized staff operation only;

21. Manual commissioning to achieve genset start/stop operation;

22. Breaker re-closing function of main/bypass breaker in auto mode;

23. Suit for single bypass, dual bypass and mutual backup dual bypass breakers;

24. Suit for manual/remote control bypass breaker;

25. 2-way N-wire isolated design;

26. Real-time clock (RTC); event log function (event log can record 200 items circularly);

27. With black box function, can record 5 events circularly, 60 detailed data of 50s before each event record, and 10s after each event record;

28. Scheduled routing run & scheduled not run (can be set as genset start once/weekly/monthly whether with load or not);

29. Can control two gensets to work as cycle run mode, master-slave run mode and balanced time run mode;

30. Wide DC power supply range allows the controller can bear instantaneous DC 80V input;

31. Large AC wire terminal space, maximum AC 625V voltage input can be accepted;

32. With Dual-RS485 isolated communication interface. With “four remote” (remote control, remote measurement, remote communication, remote adjusting) function by the ModBus-RTU communication protocol. Genset start/stop and breaker close/open can be controlled remotely;

33. Suitable for various AC systems (3-phase 4-wire, 3-phase 3-wire, single-phase 2-wire, and 2-phase 3-wire methods);

34. Modular design, anti-flaming ABS plastic shell, pluggable terminal, embedded mounting, compact structure with easy installation.

Why SmartGen?

  • More than 200,000 units yearly
  •  19 years of successful business
  • More than 50 offices worldwide
  • Almost 200 technology patents
  • ISO, GM and CCSR certificates
  • High quality and low prices
  •  Wide variety of generator parts


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