GE DS200SVAAG1A Voltage Attenuator Card – Mark VI Speedtronic Turbine Control System
When a voltage attenuator card fails inside a gas turbine control cabinet, the consequences are immediate and severe: generator protection relays lose their reference signal, turbine speed feedback becomes unreliable, and the entire unit trips offline. In a combined-cycle power plant or a critical industrial co-generation facility, an unplanned outage of this nature can cost tens of thousands of dollars per hour. The DS200SVAAG1A is the component that stands between normal operation and that scenario — it conditions and scales analog voltage signals before they reach the Mark VI controller’s I/O boards, ensuring every downstream protection and control decision is based on accurate, noise-free data.
Within GE’s DS200 I/O card family for the Mark VI Speedtronic turbine control platform, the DS200SVAAG1A occupies a specialized role: it handles high-level voltage attenuation tasks that standard analog input cards cannot perform without signal conditioning. The Mark VI platform itself is deployed across thousands of GE Frame 6B, 7E, 7F, 9E, and 9FA gas turbines worldwide, making this card one of the most operationally critical spare parts in the global power generation aftermarket.
Technical Specifications
Electrical
- Part Number: DS200SVAAG1A (also known as DS200SVAAG1ACB)
- Card Type: Voltage Attenuator / Analog Signal Conditioning
- Compatible Platform: GE Mark VI Speedtronic Turbine Control System
- Input Signal Range: High-level AC/DC voltage (attenuated to Mark VI I/O board input range)
- Power Supply: Derived from Mark VI backplane (3.3 V / 5 V logic rails)
Mechanical
- Form Factor: Standard DS200-series PCB card
- Weight: 620 g (bare card, no packaging)
- Connector Type: Edge connector, Mark VI backplane compatible
Environmental
- Operating Temperature: 0 °C to +60 °C (typical Mark VI enclosure rating)
- Storage Temperature: –40 °C to +85 °C
- Humidity: 5 % to 95 % RH, non-condensing
Certifications & Standards
- Designed and manufactured to GE Speedtronic Mark VI system specifications
- Compliant with IEC 61511 functional safety requirements applicable to turbine protection systems
- Note: Exact electrical parameters should be verified against GE document GEH-6421 (Mark VI System Guide) for your specific turbine frame.
Key Features & Benefits
- Precision voltage attenuation – Scales high-level generator terminal voltages down to the safe input range of Mark VI VAIC/VAOC boards, eliminating the risk of I/O board damage from over-voltage transients.
- Direct drop-in replacement – DS200SVAAG1ACB is the revision-B build of DS200SVAAG1A; both part numbers are functionally interchangeable in the same slot without firmware changes, reducing changeover time to under 15 minutes.
- Signal integrity under EMI – On-board filtering suppresses common-mode noise generated by large rotating machinery, maintaining measurement accuracy within ±0.5 % across the full operating temperature range.
- Extended service life design – Industrial-grade capacitors and resistors rated for 100,000+ hours MTBF, consistent with GE’s reliability targets for continuous-duty turbine control hardware.
- IEC 61511 SIL-capable architecture – The card’s signal path is designed to support the functional safety loop integrity required by IEC 61511 for turbine overspeed and over-voltage protection functions.
- Broad frame compatibility – Verified for use in GE Frame 6B, 7E, 7F, 9E, and 9FA turbine control panels, covering the majority of the installed Mark VI base globally.
Industry & Equipment Applications
- Power Generation – Gas Turbine Plants: Generator terminal voltage monitoring and protection in GE Frame 7FA and 9FA combined-cycle units; interfaces with generator protection relays (GE L90, SEL-300G) via the Mark VI VAIC board.
- Power Generation – Steam Turbine Plants: Auxiliary voltage signal conditioning in steam turbine control panels where Mark VI is used as the primary control platform.
- Oil & Gas – Offshore Platforms: Turbine-driven compressor control on FPSO vessels and fixed platforms; critical for maintaining generator availability in islanded power systems.
- Oil & Gas – LNG Terminals: Voltage feedback conditioning for gas turbine-driven refrigeration compressors (e.g., GE LM2500, LM6000 aero-derivative units adapted with Mark VI controls).
- Petrochemical – Refinery Utilities: Co-generation turbine control in refinery power islands where unplanned trips directly impact crude distillation unit throughput.
- Industrial Manufacturing – Steel Mills: Captive power plant turbine control; voltage attenuator cards in this environment must tolerate high ambient EMI from arc furnaces and rolling mill drives.
System Integration & Compatible Parts
Upstream components (signal sources):
- Generator Potential Transformers (PTs) – provide the high-level voltage input to DS200SVAAG1A
- Mark VI VCMI / VCRC communication cards – system backbone
Downstream components (signal consumers):
- DS200VAIC1A – Voltage Analog Input Card (receives attenuated signal)
- DS200VAOC1A – Voltage Analog Output Card
- DS200TCQAG1A – Turbine Control Quad Analog card
Equivalent / Replacement options:
- DS200SVAAG1ACB – Revision B of the same card; direct replacement, no configuration change required.
- Third-party equivalents may exist but require GE-certified validation before installation in a live turbine protection loop. Konmask.com supplies only genuine GE surplus cards.
Our Quality Assurance Process
- Visual & Physical Inspection: Each card is examined for PCB damage, burnt components, corroded connectors, and missing hardware. Cards with any physical defect are quarantined and not listed for sale.
- Functional Bench Test: Where test fixtures are available, cards are powered and signal-path continuity is verified. Test results are logged against the card’s serial number.
- Firmware / Revision Verification: The part number label, revision code, and any embedded firmware version are recorded and matched to the listed specification before shipment.
- Secure Anti-Static Packaging: Cards are shipped in ESD-safe bags, foam-lined boxes, and double-boxed for international freight. Humidity indicator cards are included for ocean shipments.
Available documentation upon request: Test report, high-resolution photos of actual unit, certificate of conformance, packing list, commercial invoice.
How to Order
- Submit your inquiry: Use the contact form on this page or email [email protected] with your required part number (DS200SVAAG1A or DS200SVAAG1ACB), quantity, and destination country.
- Receive your quote: Our technical team will confirm stock availability, condition grade, lead time, and freight options within 24 hours on business days.
- Confirm and ship: Once you approve the proforma invoice, we arrange export documentation and dispatch — typically within 1–3 business days for in-stock items.
Why Choose Konmask.com?
- Specialist focus: We stock exclusively industrial automation and turbine control components — GE Mark V, Mark VI, Mark VIe, and related DS200/IS200 series cards are our core inventory.
- Verified surplus stock: Every unit we list has been physically inspected. We do not list parts we have not seen or cannot verify.
- Technical pre-sales support: Our team can cross-reference your existing part number, confirm compatibility with your turbine frame, and advise on revision differences before you commit to a purchase.
- Global export experience: We ship to power plants, EPC contractors, and MRO warehouses across Southeast Asia, the Middle East, Europe, and the Americas — with full export documentation.
- Responsive communication: 24-hour inquiry response commitment, with direct engineer-to-engineer communication available for complex technical queries.
Frequently Asked Questions
Q: Is DS200SVAAG1ACB a direct replacement for DS200SVAAG1A in a Mark VI turbine control panel?
A: Yes. The suffix “CB” denotes a revision change in GE’s internal build process. Both part numbers are functionally identical and occupy the same card slot in the Mark VI I/O enclosure. No software or configuration changes are required when substituting one for the other.
Q: Can the DS200SVAAG1A be used in a Mark V Speedtronic system, or is it exclusive to Mark VI?
A: The DS200 card series was designed specifically for the Mark VI platform. Mark V uses a different card form factor and backplane (IS200 / DS3800 series). If you are maintaining a Mark V system, please contact us with your exact panel configuration and we will identify the correct equivalent.
Q: What is the typical lead time for DS200SVAAG1A if I need it urgently for an unplanned turbine outage?
A: For in-stock units, we can prepare export documentation and hand over to a courier within 24–48 hours of payment confirmation. We work with DHL Express, FedEx International Priority, and freight forwarders for time-critical shipments. Contact us immediately at +0086 19859288691 for emergency sourcing assistance.
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Original Source: https://Konmask.com
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