General Electric DS2020DACAG2 AC/DC Converter Board

The DS2020DACAG2 is an AC/DC power conversion assembly from General Electric, identified by the functional acronym DACA. It converts 115/230 VAC input power into a DC supply for power distribution within the EX2100 excitation control system. The module has a rated output power of 1000 W and supports a maximum output current of 9.5 A DC per module.

Functional Description

The DS2020DACAG2 converts incoming AC power into DC power for the excitation control system's internal power distribution. In the GE EX2100 architecture, the DACA supplies the Exciter Power Distribution Module (EPDM), which distributes DC power to the control, I/O, and protection circuits.

The converted DC supply is diode-coupled with other available DC sources, including the station battery supply. This arrangement allows multiple power sources to contribute to the common DC supply bus without directly connecting their outputs together.

Power Conversion and Distribution

The module provides up to 1000 W of output power, with a maximum output current of 9.5 A DC for a single DACA module. Its DC output supports the nominal 125 VDC power distribution architecture used by the EX2100 excitation system.

The EX2100 system documentation describes the use of two DACA modules connected to the EPDM when additional power supply redundancy is required. The actual system configuration depends on the installed power distribution arrangement.

Technical Specifications

Environmental and Component Characteristics

The DS2020DACAG2 is specified for operation under free-convection cooling conditions, with a temperature range of -22 to +140 deg F and relative humidity between 5% and 95%, non-condensing.

The assembly uses electrolytic capacitors in its power conversion circuitry. Temperature and operating conditions should be considered when evaluating capacitor aging and the service condition of an installed module.

Frequently Asked Questions

Q: What is the primary function of the DS2020DACAG2?

A: It converts AC input power into DC power for the excitation control system's power distribution. In the EX2100 architecture, its output supplies the EPDM, which distributes power to the control and associated system circuits.

Q: Can two DS2020DACAG2 modules be used in the same system?

A: The EX2100 documentation describes configurations using two DACA modules connected to the EPDM. This arrangement provides an additional DC power source. The actual configuration must follow the system's power distribution design.

Q: Which model does the DS2020DACAG2 replace?

A: The supplied product information identifies DS2020DACAG1 as its predecessor. Confirm the existing system configuration and electrical requirements before selecting it as a replacement.