The controller for the OTM_C21D Compact ATS provides versatile operation options, including manual conversion, button-based conversion, and automatic conversion. The automatic conversion modes comprise self-injection with self-recovery, mutual backup with self-injection, and no self-recovery. Within the automatic mode, various operating methods can be selected, including Line 1 priority, no-line priority, and manual back-switching mode.
Additionally, the OTM_C21D can be equipped with communication capabilities by incorporating the optional external Modbus RTU module. This enhances its functionality by allowing communication in line with industry standards.
Features of OTM_C21D Compact ATS ABB
- Reasonable structure, small volume, nice appearance, provided with protective shield, safer and more reliable power supply.
- Complete protective functions, including short circuit, overload, open phase, and loss-of-voltage protection.
- Noiseless, energy saving, simple installation, easy operation, reliable and stable performance.
Specification of OTM_C21D ATS
| OTM_C21D ATS | Parameters |
| Rated operational voltage Ue[V] Single-phase (2P)
Three-phase (3P/4P) |
220~240 V AC 50~60 Hz 380/400/415 |
| Frequency | 50Hz/60 Hz |
| Operating voltage range | 0.7~1.3 Ue |
| Measuring accuracy | ±3% |
| Operating angle | 90° ( O-I, I-O, O-II, II-O)
180° ( I-O-II, II-O-I) |
| OFF time | 0,6 – 0,7 s |
| Total transfer time | 2.5 s |
| Output relay utilization category | 3A, AC1, 250V |
| Electromagnetic compatibility | Class B |
| Ingress Protection Rating | IP20, front panel |
| Rated impulse withstand voltage Uimp | 8 kV (6 kV for the control circuit, disconnect the power line of the control circuit before carrying out the dielectric voltage withstand test) |
| Operating temperature | -25~55oC |
| Transportation and storage temperature | -40~70oC |
| Altitude | Max. 2000 m |
Applications of OTM_C21D ATS
ABB Compact ATS OTM_C21D is particularly suitable for applications that require high reliability of continuous power supply and where sudden power outages may cause serious problems, such as operating rooms, airports, hotels, banks, communication systems, and production lines, etc.
Dimensions of OTM_C21D Compact ATS
