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This GE DS200IPCDG1A DS200IPCDG1ABA Snubber Card protects SCR circuits from voltage transients and dv/dt false firing. The card connects directly across each thyristor in the excitation bridge. You will find this component in many GE Mark V power conversion systems. The DS200IPCDG1ABA variant includes the standard factory configuration without coating.
Technical Specifications
| Parameter | Specification |
|---|---|
| Full Model | GE DS200IPCDG1A DS200IPCDG1ABA Snubber Card |
| Category | Snubber Card |
| Number of Channels | 6 Independent Snubber Circuits |
| Resistor Value | 22 Ω, 25W Wirewound per Channel |
| Capacitor Value | 0.47 µF, 1000V Polypropylene per Channel |
| Peak Voltage Rating | 1200 V |
| dv/dt Suppression | 500 V/µs Maximum |
| Dimensions (H x W) | 180 mm x 120 mm |
| Weight | Approximately 0.52 kg |
| Connectors | 6 x Quick-Disconnect Terminals |
| Component Count | 12 Resistors, 6 Capacitors |
| Energy Storage | 0.47 µF per Channel (Total 2.82 µF) |
Transient Suppression and Protection Features
The GE DS200IPCDG1A DS200IPCDG1ABA Snubber Card limits voltage rise across each SCR during commutation. Each channel combines a 22 Ω resistor with a 0.47 µF capacitor. This RC network absorbs energy from parasitic inductances in the power circuit. Furthermore, the card prevents false triggering from high dv/dt events. Consequently, your SCR bridge operates reliably even under harsh switching conditions.
Installation and Connection Steps
Mount this GE DS200IPCDG1A DS200IPCDG1ABA Snubber Card near the SCR bridge in the exciter cabinet. First, connect each channel’s terminals across one SCR’s anode and cathode. After that, verify all six connections match the correct phase assignments. Then, secure the card using four M3 mounting screws. Finally, check that no terminals touch adjacent circuits before powering up.
Energy Discharge and Safety Notice
This GE DS200IPCDG1A DS200IPCDG1ABA Snubber Card stores energy in its six capacitors. Therefore, you must wait at least one minute after power removal. The capacitors discharge through their series resistors naturally. Never short the terminals to discharge them faster.
Status Indication and Diagnostics
This snubber card has no active indicators or LEDs. However, you can test each RC network with an LCR meter. A failed capacitor typically shows as a short or open circuit. A burned resistor indicates excessive switching energy in that phase.