GE DS3820PS7A1B1C – Regulated DC Power Supply | Mark VI Turbine Control Platform
Engineering Background
The DS3820PS7A1B1C is a regulated DC power supply module engineered by General Electric as an integral component of the Mark VI Turbine Control System — GE’s flagship distributed control architecture for gas turbines, steam turbines, and combined-cycle power generation units. Designed to deliver stable, conditioned power to I/O boards, communication modules, and processor cards within the Mark VI VME-based chassis, this module is a critical reliability node in continuous-duty industrial environments.
Product Positioning
Konmask.com supplies the DS3820PS7A1B1C as a verified surplus / new-surplus unit, sourced directly from decommissioned OEM installations and authorized distribution channels. Each unit undergoes functional inspection prior to listing. This module is positioned for procurement engineers requiring a drop-in replacement with full OEM form-factor compatibility, eliminating the lead times associated with new factory orders.
Complete Technical Specifications
- Part Number: DS3820PS7A1B1C
- Manufacturer: General Electric (GE Energy / GE Power)
- Series / Platform: Mark VI Turbine Control System
- Module Type: Regulated DC Power Supply
- Form Factor: VME-compatible plug-in module
- Input Voltage: 120/240 VAC, 50/60 Hz (nominal)
- Output Voltage: +5 VDC, ±15 VDC (multi-rail)
- Isolation: Galvanically isolated input-to-output
- Protection: Over-voltage, over-current, short-circuit protection
- Operating Temperature: 0 °C to +60 °C
- Storage Temperature: –40 °C to +85 °C
- Humidity: 5% to 95% RH, non-condensing
- Weight: Approx. 250 g
- Compliance: CE, UL (per GE Mark VI platform certification)
- Condition: Surplus / New-Surplus (OEM-spec)
Proven Application Environments
- Gas turbine control panels (GE Frame 5, 6, 7, 9 series)
- Steam turbine governor and protection systems
- Combined-cycle power plant DCS integration
- Compressor station automation (upstream oil & gas)
- Refinery and petrochemical process control
- Marine propulsion control systems using Mark VI architecture
- Emergency shutdown (ESD) and safety instrumented systems (SIS) auxiliary power
Engineering Advantages
- Drop-in OEM Replacement: Identical form factor, connector pinout, and rail voltages — no firmware or hardware modification required.
- Multi-Rail Output: Simultaneously powers logic, analog I/O, and communication sub-systems from a single module slot.
- Galvanic Isolation: Eliminates ground-loop interference in mixed-signal control environments.
- Robust Protection Suite: Built-in OVP, OCP, and SCP prevent cascade failures in the control chassis.
- Wide Thermal Envelope: Rated for 0–60 °C continuous operation, suitable for non-air-conditioned MCC rooms.
- Immediate Availability: Surplus stock ships within 1–3 business days, bypassing 12–26 week OEM lead times.
System Architecture & Signal Flow
Within the Mark VI architecture, the DS3820PS7A1B1C occupies the power supply slot of the VME chassis (VCMI or VTUR card cage). AC mains enter via the chassis backplane or direct terminal block; the module converts and regulates to the required DC rails distributed across the backplane bus. Downstream consumers include the VCMI communication interface card, VTUR turbine I/O card, VPRO protection processor, and associated terminal boards (TBCI, TTUR). The module’s status output feeds the Mark VI diagnostic bus, enabling real-time health monitoring via the HMI.
Sourcing & Quality Verification
- All units sourced from documented decommissioned GE Mark VI installations or authorized surplus distributors.
- Pre-shipment inspection: visual, dimensional, and functional power-on verification.
- Original GE part number label and revision suffix verified against GE IS420 / GEH-6721 documentation.
- Anti-static packaging with humidity indicator card; serialized shipment record retained for traceability.
- Certificate of Conformance (CoC) available upon request.
Procurement Process
- Inquiry: Submit your RFQ via support@konmask.com or call +0086 19859288691.
- Quote & Lead Time: Receive a formal quotation with stock confirmation within 24 hours.
- Order Confirmation: Purchase order accepted; payment terms discussed (T/T, L/C, or platform checkout).
- Inspection & Packaging: Unit inspected, photographed, and packed in ESD-safe materials.
- Shipment: DHL / FedEx / UPS express worldwide; tracking number provided same day.
- After-Sales: 90-day warranty on verified functional units; technical support available.
Technical FAQ
- Q: Is the DS3820PS7A1B1C compatible with Mark VIe?
- A: The DS3820PS7A1B1C is designed for the Mark VI VME platform. Mark VIe uses a different chassis architecture (IS420 series). Cross-compatibility requires engineering review — contact us before ordering.
- Q: Can I use this module as a standalone bench power supply?
- A: Not recommended. The module is designed for backplane-integrated operation within the Mark VI chassis. Standalone use requires custom breakout wiring and load resistors.
- Q: What is the warranty period?
- A: Konmask.com provides a 90-day functional warranty on all verified surplus units. Extended warranty options are available upon request.
- Q: Do you provide a datasheet or GE documentation?
- A: Yes. GEH-6721 (Mark VI System Guide) excerpts and the relevant IS420 wiring diagrams are available to qualified buyers upon request.
- Q: What is the minimum order quantity (MOQ)?
- A: MOQ is 1 unit. Volume pricing is available for orders of 3 or more units.
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Contact: support@konmask.com | +0086 19859288691
