GE IS200RCSBG1BAA RC Snubber Card for 620 Frame Mark VI

GE IS200RCSBG1BAA RC Snubber Card

The IS200RCSBG1BAA is an RC snubber card designed by General Electric for its Mark VI Speedtronic turbine control system. This board provides essential overvoltage protection for diodes and SCRs (Silicon-Controlled Rectifiers) within the excitation control bridge.

Technical Specifications

• Brand & Model: General Electric (GE) IS200RCSBG1BAA
• Product Type: RC Snubber Card (RCSB Functional Abbreviation)
• System Platform: GE Mark VI Speedtronic Turbine Control System
• Frame Compatibility: Designed for 620 Frame applications
• Revision: Total of 3 revisions; backward compatible with the first two
• Assembly Type: Normal Assembly with standard PCB coating

Key Components & Electrical Specs

• Capacitors: 12 capacitors arranged in 6 pairs of two
• Capacitance: Each capacitor rated 0.095 to 0.150 µF
• Clamping Current: 8.5 A peak (Apk) per capacitor
• Layout: Each capacitor pair aligns with a single stab-on connector
• Board Markings: Features the GE logo and codes like 6BA01

Connector Types & Layout

• The board features seven terminal connections with conductive rings:
• N1 Connector: Negative/neutral connection 1
• N2 Connector: Negative/neutral connection 2
• P1 Connector: Positive connection 1
• P2 Connector: Positive connection 2
• A-A/K, B-A/K, C-A/K Connectors: Phase connections for three-phase bridge (Anode/A-Cathode/K)
• Mounting: Factory drilled holes in two corners for secure installation

Primary Function & System Role

• Provides snubber circuitry to protect power semiconductors (SCRs and diodes) from voltage spikes (dv/dt) during switching
• Required: One snubber card is needed for each bridge in the excitation system
• The RC network absorbs and dissipates transient energy, preventing overvoltage damage
• Enhances the reliability and longevity of the power bridge components
• Integral part of the Group One Mark VI Series product grouping

Application & Installation Notes

• Used specifically in 620 Frame configurations of the Mark VI Speedtronic system
• A passive component board with no active electronics, fuses, or indicators
• Critical for applications involving inductive loads where switching transients are significant
• Installation and handling details are covered in official GE user guides and manuals

Safety & Documentation

• Detailed information on function, handling, and replacement procedures is contained in GE publications
• Thorough review of relevant manuals is recommended before any maintenance or installation work
• Proper electrostatic discharge (ESD) precautions should be observed during handling

Typical Applications

• Generator excitation control systems in gas and steam turbine power plants
• Mark VI Speedtronic control platforms utilizing 620 Frame power bridges
• High-power rectifier/inverter circuits requiring snubber protection

Packaging & Shipping

• The IS200RCSBG1BAA snubber card is shipped as a single unit.
• Packaged in ESD-safe materials to prevent damage to components.
• Worldwide express shipping via FedEx, UPS, and DHL available.

Frequently Asked Questions (FAQ)

• What frame is this snubber card for? It is specifically designed for GE's 620 Frame power bridges within the Mark VI system.
• How many capacitors does it have? It features 12 capacitors, configured in 6 pairs.
• What is its main purpose? To protect SCRs and diodes from destructive voltage spikes by providing an RC snubber network across them.
• How many cards are needed per system? One IS200RCSBG1BAA card is required for each excitation bridge.
• Are there any movable parts or indicators? No, it is a purely passive board with no switches, jumpers, LEDs, or fuses.
• What do the connector labels (A-A/K, etc.) mean? They designate the phase (A, B, C) and terminal (Anode or Cathode) connections for the three-phase bridge.
• Where can I find installation instructions? Refer to the official GE Mark VI Speedtronic technical manuals and user guides for detailed procedures.

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