PLCs, Power Supplies & Others

The GE DS200UPSAG1A DS200UPSAG1AFD provide regulated power for EX2000 generator excitation systems. These power supply boards convert incoming AC or DC to stable output voltages. You can use either board to power control logic, gate drives, and monitoring circuits. The units ensure clean, reliable power for critical excitation functions.

Power and Electrical Specifications

The GE DS200UPSAG1A DS200UPSAG1AFD accept 120 or 240 VAC input from field supplies. These power supply boards deliver 5 VDC at 5 amps for logic circuits. You also get ±15 VDC for analog circuits and 24 VDC for I/O. The units provide 3000 VAC isolation between input and all output sections.

Physical Dimensions and Weight

Each EX2000 power supply board weighs 0.62 kg for secure chassis mounting. The unit measures 280 mm long by 165 mm wide. Its PCB thickness reaches 1.6 mm with four internal copper layers. You can mount either board using four M4 screws through the designated holes.

Interface and Connection Points

A 6-pin terminal block handles 120/240 VAC input connections. Three 4-pin headers provide 5 VDC, ±15 VDC, and 24 VDC outputs. The GE DS200UPSAG1A DS200UPSAG1AFD include a 2-pin connector for remote status monitoring. You will find five LED indicators showing each output voltage status. Additionally, eight test points provide access for voltage measurements.

Energy Storage and Internal Circuitry

These EX2000 power supply boards store significant energy for hold-up purposes. Twelve electrolytic capacitors provide 3,600 µF of total bulk storage. These capacitors maintain outputs for 60 ms after input power loss. The boards do not contain any battery for configuration retention. A large bleeding resistor discharges capacitors within 45 seconds after power-off.

Component Layout and Construction

A high-frequency PWM controller operates at 150 kHz for efficient conversion. The board includes input EMI filtering and inrush current limiting. You will find 86 resistors, 72 capacitors, and 12 integrated circuits on the board. The GE DS200UPSAG1A DS200UPSAG1AFD include overcurrent, overvoltage, and overtemperature protection circuits. A metal shield covers the power section for EMI reduction.

Variant Equivalence and Use

The GE DS200UPSAG1AFD represents a functional equivalent or later revision. Both versions share identical dimensions, connectors, and mounting hole locations. You can substitute one for the other without hardware modifications. Transitioning to these boards restores power functionality to EX2000 excitation systems. Use GE DS200UPSAG1A DS200UPSAG1AFD for generator excitation control in power plants. For best results, allow 45 seconds for capacitor discharge before servicing.

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