The Woodward DTSC-200-55B is a high-performance automatic transfer switch (ATS) for critical power systems. This robust unit ensures seamless power source transitions between main and standby supplies. Consequently, it provides uninterrupted power to essential loads in industrial, telecom, and commercial facilities.
Core Transfer Functionality and Control Logic
This automatic transfer switch excels at monitoring two independent AC power sources continuously. It initiates a transfer to the alternate source upon detecting a primary source failure. Moreover, the DTSC-200-55B incorporates advanced logic for safe, in-phase transfers to minimize load disturbance.
The switch features user-configurable time delays for both retransfer and engine cooldown sequences. Therefore, it optimizes generator operation and prevents nuisance cycling during brief utility fluctuations.
Detailed Electrical and Mechanical Specifications
Engineered for reliability and safety, this ATS meets stringent industry standards for performance. Below are its comprehensive electrical, physical, and operational specifications.
Comprehensive Technical Specifications:
| Parameter | Specification |
|---|---|
| Manufacturer | Woodward |
| Model Number | DTSC-200-55B |
| Product Category | Automatic Transfer Switch (ATS) |
| Rated Operational Voltage | Up to 600 V AC |
| Continuous Current Rating | 200 Amperes |
| Withstand Rating (Icw) | 30 kA RMS for 0.5 seconds |
| Interrupting Rating | 65 kA (Symmetrical, at 480V AC) |
| Number of Power Poles | 3 Poles (plus neutral if specified) |
| Transfer Time (Open Transition) | <5 cycles (100ms typical at 60Hz) |
| Control Power Supply | 24-48 V DC or 120/240 V AC (Field selectable) |
| Control Power Consumption | 15 VA (Typical, in monitoring mode) |
| Voltage & Frequency Sensing | True RMS sensing on both sources |
| Mechanical Life | >10,000 transfer operations (no load) |
| Electrical Life | >1,000 transfer operations at full load |
| Primary Component Count | 2x contactors, 1x control PCB, 2x voltage sensors |
| Interface Connections | Power: lug terminals; Control: removable plug connectors |
| Operating Mechanism | Motor-driven, stored-energy spring operator |
| Enclosure Rating | NEMA 3R (standard) or NEMA 4X (optional) |
| Enclosure Dimensions (HxWxD) | 800 mm x 500 mm x 300 mm (typical for 200A) |
| Switch Weight | Approximately 65 kg |
| Energy Storage (Operator) | Spring charge mechanism (~500 Joules stored) |
| Control Logic Energy Backup | Supercapacitor for ride-through (~10 Joules, 5 sec) |
| Operating Temperature Range | -30°C to +60°C |
| Communication Interface | Optional Modbus RTU or Ethernet/IP module |
| Certifications | UL 1008, IEC 60947-6-1 |
Application and System Context
This ATS is critical for data centers, hospitals, and water treatment plants requiring high availability. For sourcing related electrical protection components, platforms like Alibaba list items such as the RMS-TSG-TZ-C Static Trip unit.
Details
| Weight | 0.85 kg |
|---|---|
| Dimensions | 180 × 110 × 40 mm |
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