DS3800HCVA GE

Technical Specifications

• Product Type: High-Current Voltage Amplifier Board

• Part Number: DS3800HCVA

• Manufacturer: General Electric (GE)

• System Compatibility: GE Speedtronic Mark IV Turbine Control Systems

• Output Channels: 4 independent analog outputs

• Output Type: Voltage (0-10V, ±10V, or 0-24V) (jumper-selectable)

• Drive Capability: Up to 500mA per channel – highest in Mark IV analog series

• Input Signal: ±10Vdc from Mark IV processor

• Gain: Selectable 1x, 2x, 5x, or 10x via jumpers

• Bandwidth: DC to 10kHz

• Slew Rate: > 5V/µs

• Accuracy: ±0.1% of full scale at 25°C; ±0.02% per °C drift

• Protection: Over-current, short-circuit, and thermal shutdown per channel

• Isolation: 1500Vrms opto-isolation (logic-to-output)

• Temperature Range: 0°C to +60°C

• Heat Dissipation: Integrated heatsink for high-power operation

• MTBF: > 120,000 hours (MIL-HDBK-217F)

Key Features & Advantages

• High Drive Capability: The GE DS3800HCVA delivers up to 500mA per channel, making it suitable for high-power field devices.

• Flexible Output Range: Jumper-selectable 0-10V, ±10V, or 0-24V to match field device requirements.

• Selectable Gain: 1x, 2x, 5x, or 10x gain for signal scaling.

• High Power: Integrated heatsink allows sustained high-power operation.

• Comprehensive Protection: Over-current, short-circuit, and thermal shutdown.

• Diagnostic LEDs: Front-panel LEDs indicate output status and fault conditions.

Typical Application Cases

• Piezoelectric Actuator Drive: The GE DS3800HCVA drives piezoelectric actuators requiring high-voltage, high-current signals.

• High-Voltage Valve Positioners: Controls valve positioners requiring 0-24V inputs.

• Long-Distance Signal Transmission: Drives analog signals over long cable runs (> 1000m).

• Electrostatic Precipitator Control: Provides high-voltage control signals for electrostatic precipitators.

Competitive Comparison

The GE DS3800HCVA offers high-voltage output capability and selectable gain, making it the most flexible voltage amplifier in the Mark IV family.

Selection Guidelines & Precautions

1. Output Voltage Selection: Configure jumper for 0-10V, ±10V, or 0-24V to match your field device.

2. Gain Selection: Set gain to scale input signal appropriately (1x, 2x, 5x, or 10x).

3. Load Verification: Verify field device impedance to ensure current does not exceed 500mA.

4. Thermal Management: Ensure adequate cabinet airflow for sustained high-power operation.

5. Short-Circuit Protection: Protected, but repeated shorting may affect reliability.

6. Wiring: Use shielded cables for outputs; ground shield at board end only.

7. ESD Handling: Use ESD-safe practices.

8. Sourcing: Obsolete. Request functional test report including all channels tested.

9. Spare Strategy: Keep one spare GE DS3800HCVA on-site for critical high-voltage applications.