Description
1. At-A-Glance Executive Brief
- Model: DS3820PSCB1C1B
- Brand: GE (General Electric)
- Part Type: Power Supply Assembly Module
- Series: Speedtronic Mark IV
- Lifecycle Status: Legacy / Mature System Support
- System Compatibility: GE Mark IV Gas & Steam Turbine Controls
- Weight: 0.5 kg
2. Technical Introduction
Failing legacy power electronics inside gas turbine control cabinets risk unexpected trips and costly plant outages. The GE DS3820PSCB1C1B acts as a high-reliability power distribution hub within the Mark IV Speedtronic architecture, accepting an 80 to 140 VDC input range and converting it into tightly regulated logic and analog rails. It feeds stable multi-channel power to internal processor and I/O cards, ensuring uninterrupted control loop performance across heavy industrial environments.
- Best Suited For: GE Mark IV turbine control cabinet retrofits
- Best Suited For: Legacy power supply rack maintenance
- Best Suited For: High-reliability gas and steam turbine protection systems
3. Core Technical Specifications
| Parameter | Value |
| Manufacturer | General Electric (GE) |
| Series | Speedtronic Mark IV |
| Part Number | DS3820PSCB1C1B |
| Product Type | Power Supply Assembly Module |
| Input Voltage Range | 80 to 140 VDC |
| Output Voltages | +5VDC, +15VDC, -15VDC |
| Output Power | 60 W |
| Operating Temperature | -40^\circC to +65^\circC |
| Physical Dimensions | 15.9 cm \times 19.7 cm |
| Weight | 0.5 kg |
4. Field Engineer’s Tech Notes
- Cabinet Ventilation and Air Clearance: Because of the compact spatial arrangement of internal circuit boards and electrolytic can capacitors, ensure that surrounding rack slots maintain unobstructed air circulation. Restricted airflow accelerates thermal degradation of internal components.
- Fuse and Circuit Breaker Verification: Inspect the top-mounted fuse and circuit breaker before energizing the module. Check the internal toggle switch position corresponding to the board’s enable/disable state to prevent accidental open-circuit faults during rack power-up.
5. Adaptive QA & Testing Protocol
Every inventory unit undergoes bench testing to validate hardware reliability prior to dispatch. For the DS3820PSCB1C1B power supply module, our technicians execute full-load voltage regulation tests across the 80–140 VDC input spectrum to verify stability on the +5V, +15V, and -15V rails. Ripple voltage measurements, overcurrent protection thresholds, and internal thermal dissipation checks are performed under simulated operating loads. Complete test reports and pre-shipment functional verification videos are available upon request.
7. Buyer’s FAQ
- What is the standard warranty coverage for this power supply?
All units—whether New Surplus (NSFP) or fully tested/refurbished—carry a comprehensive 12-month operational warranty from the date of purchase.
- How fast can this module be shipped for emergency plant shutdowns?
In-stock items ship the same business day if ordered before our daily carrier cutoff, with expedited global air delivery options available.
- Is this a direct drop-in replacement for earlier Mark IV power supply revisions?
Yes, part number DS3820PSCB1C1B matches original form, fit, and pinout configurations for Mark IV turbine control panels. Verify your rack input voltage requirements prior to installation.
