DTSC-200-55B Controller 8440‑1868 | Woodward Transfer Switch Module

Product Description

The Woodward 8440‑1868 DTSC‑200-55B is an advanced Automatic Transfer Switch (ATS) controller designed to manage seamless power source transfers in three-phase systems. This microprocessor-based controller provides flexible, reliable control between utility, generator, and multiple generator sources, ensuring continuous uptime for critical loads.

It supports open, delayed, and closed transition modes with in-phase monitoring, reducing transients during source transfers. Moreover, the controller includes configurable features such as transfer inhibit, source selection, load shed/restore, elevator pre-signal, and engine test programs, allowing operators to customize performance to facility requirements.

The 8440‑1868 is ideal for industrial, commercial, and utility environments, providing precise control and dependable ATS operation under demanding conditions. Its compact design and robust construction simplify installation and integration with existing power systems.

Technical Specifications

• Product type: Automatic Transfer Switch (ATS) Controller

• Manufacturer: Woodward

• Model number: 8440‑1868 (DTSC‑200-55B)

• Function: Flexible automatic source transfer and ATS control

• System type: Three-phase

• Auxiliary power: 12/24 VDC

• Transition modes: Open, delayed, closed with in-phase monitoring

• Closed transition overlap: <100 ms momentary make-before-break, extendable via discrete input

• Control features: Transfer inhibit, source selection, load shed/restore, elevator pre-signal, engine test programs

• Weight: 1.3 kg

• Applications: Main-Gen, Gen-Gen, Main-Main power transfer systems

FAQ

Q1: What is the main function of the 8440‑1868 ATS controller?
A1: It provides reliable automatic transfer between utility and generator or between multiple generators.

Q2: Which transition modes are supported?
A2: Open, delayed, and closed transition with in-phase monitoring (synch-check) for smooth switching.

Q3: What power supply does this controller require?
A3: It operates on 12 or 24 VDC auxiliary power for three-phase ATS applications.

Q4: Can the closed transition overlap time be adjusted?
A4: Yes, it can be limited to under 100 ms or extended via discrete input for controlled paralleling.

Q5: Where is the DTSC‑200-55B commonly applied?
A5: Industrial, commercial, and utility three-phase systems including Main-Gen, Gen-Gen, and Main-Main configurations.