Description
Technical Parameters
| Parameter | Specification |
|---|---|
| Input Voltage | 125 VDC nominal (range 90–160 VDC); 24 VDC compatible with external adapter |
| Output Rails | +5 VDC / 8A (logic), ±15 VDC / 2A (each rail, adjustable ±12%), +24 VDC / 1A (auxiliary) |
| Isolation | Full isolation (1.5kV input‑to‑output, 2.0kV output‑to‑ground) |
| Protection | Overcurrent protection (adjustable per output via jumpers), short‑circuit protection, transient suppression (6kV surge), reverse polarity protection, input undervoltage lockout |
| Regulation | Load regulation: ±0.3%; Line regulation: ±0.15%; Ripple: < 20mVpp (+5V), < 10mVpp (±15V) |
| Adjustment Range | ±15V rails adjustable ±12% (13.2V–16.8V) via onboard potentiometers |
| Monitoring | 4 analog feedback channels (voltage and current monitoring for +5V and +15V); 4 digital fault outputs (relay, 24V/1A) for system faults |
| Digital Interface | 4 digital inputs for external control; 6 digital outputs for status indication |
| Diagnostic Features | Onboard diagnostic engine for power supply health monitoring; event logging (2,000‑event buffer) |
| Operating Temperature | –30°C to +65°C |
| Form Factor | 6U × 6HP (30mm) – requires 1.5 slots |
| Backplane Connector | Standard VME 96‑pin P1 + reinforced 60‑pin P2 |
| Status LEDs | 8 indicators: INPUT OK (green), OUTPUT OK (green), SYSTEM OK (green), FAULT (red), AUX OK (green), ADJUST ACTIVE (blue), OVERTEMP (yellow), DIAGNOSTIC ALERT (orange) |
| Certifications | CE, UL 508, CSA Class I Div 2 |
| Efficiency | ~80% at full load |
Critical note: The DS3800NVAA1C1A is a variable voltage analog power board with adjustable ±15V outputs, higher capacity, and enhanced diagnostics. It is physically wider (6HP) than standard 4HP boards and requires 1.5 adjacent slots. Hot‑swapping is not supported.
Key Features & Advantages
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Adjustable Analog Outputs – ±15V rails adjustable ±12% (13.2V–16.8V) via onboard potentiometers.
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Higher Capacity – +5V at 8A, ±15V at 2A, and +24V at 1A—higher than baseline NVAA.
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Wider Adjustment Range – ±12% adjustment (improved from ±10%).
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Enhanced Monitoring – Four analog channels for voltage and current monitoring.
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Diagnostic Engine – Onboard diagnostics for power supply health monitoring.
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Event Logging – 2,000‑event buffer for failure analysis.
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Four Fault Relays – Separate fault indication for system faults.
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Full Isolation – 1.5kV isolation protects sensitive analog circuits.
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Wide Temperature Range – –30°C to +65°C.
Typical Application Cases
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Instrumentation Cabinets – Powers precision analog circuits with adjustable voltage.
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Analog Signal Conditioning Racks – Provides adjustable power for signal conditioners.
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Calibration Equipment – Supplies adjustable analog power for calibration.
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System Integration Projects – Used when adjustable analog power and diagnostics are required.
Competitive Comparison
| Aspect | DS3800NVAA1C1A (GE) | DS3800NVAA (baseline) | Generic Adjustable Supply |
|---|---|---|---|
| Adjustment Range | ±12% | ±10% | Varies |
| +5V Output | 8A | 5A | Varies |
| ±15V Output | 2A each | 1A each | Varies |
| Diagnostics | Yes | No | Varies |
| Price (refurb) | ~$4,800–$7,000 | ~$4,000–$5,800 | ~$200–$800 |
Selection Guidelines & Precautions
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Application Verification – Designed for analog power distribution with adjustable outputs and diagnostics.
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Physical Compatibility – 6HP wide, requires 1.5 adjacent slots.
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Backplane Compatibility – Uses P1 and P2. If backplane lacks P2, auxiliary features unavailable.
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Voltage Adjustment – Adjust ±15V rails via onboard potentiometers. Use precision voltmeter for calibration.
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Thermal Derating – Full output to 55°C; derate to 90% at 55–60°C, 80% at 60–65°C. Do not operate above 65°C.
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Spare Sourcing – Production ended in 2018. Request test report verifying outputs and adjustment range. Inspect for capacitor bulging or discoloration. Prioritize this over baseline NVAA for applications requiring higher capacity and diagnostics.
A-B 1756-TBNH
³ BCCM323-0000-10-004-PX0334-050
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