The GE IS200RCSBG1B RC Snubber Board is a critical interface module designed for use in GE Mark VI and Mark VIe control systems. Its primary function is to protect power semiconductor devices, such as IGBTs and SCRs, from voltage spikes and transient energy during switching events. By integrating high-quality resistor-capacitor (RC) networks, the board suppresses overvoltages, reduces ringing, and enhances the longevity and reliability of turbine excitation and inverter systems. This module is particularly suited for industrial and power generation applications where high-speed switching and electrical noise can compromise control and power electronics performance.

Product Specifications

Applications

• Turbine Excitation Systems – Protects IGBT and SCR modules from switching transients during excitation control.

• Power Inverter Circuits – Reduces voltage overshoot in medium- and high-voltage inverter stages.

• Industrial Drives – Enhances reliability in large motor drive systems subjected to high-speed switching.

• Retrofit and Upgrade Projects – Ideal for replacing or improving protection in legacy Mark VI/VIe control systems.

• Renewable Energy Systems – Ensures stable operation of wind and solar inverters in environments with fluctuating grid conditions.

Advantages

• High-Speed Protection – Responds in less than 1 µs to voltage transients, preventing damage to sensitive power electronics.

• Multi-Channel Capability – Supports up to 8 independent RC circuits for flexible protection schemes.

• Robust Isolation – 2500 V RMS isolation safeguards controller electronics from high-voltage surges.

• Integrated ESD Suppression – Protects circuits from electrostatic discharge and line transients.

• Compact and Modular – Easy installation in standard GE racks, simplifying replacement and maintenance.

• Low Maintenance – Passive RC networks are durable and require minimal servicing.

• Enhanced System Reliability – Minimizes ringing and switching noise, improving overall control stability.

FAQ

1. What is the main function of the IS200RCSBG1B board?

   It suppresses voltage spikes and ringing in IGBT and SCR circuits using RC networks to protect power electronics.

2. How many snubber circuits are included on the board?

   The board provides up to 8 independent RC circuits for flexible protection of multiple switching devices.

3. What is the response time of the RC network?

   Typical response to transient events is less than 1 microsecond, ensuring rapid suppression of voltage spikes.

4. Is galvanic isolation provided?

   Yes, the board offers 2500 V RMS isolation between input and the RC network outputs.

5. What types of devices can this board protect?

   It is designed to protect IGBTs, SCRs, and similar high-speed switching power semiconductor devices.

6. Does it include ESD protection?

   Yes, integrated ESD suppression protects both the RC networks and connected power electronics.

7. What is the recommended input voltage?

   The board operates on a 24 V DC nominal supply, within an 18–30 V DC operating range.

8. Can the board handle repeated transient events without degradation?

   Yes, the RC networks are designed for continuous operation and can absorb repeated switching transients.

9. How is the board cooled?

   It operates under natural convection and can also be used with forced-air cooling in higher-density installations.

10. Can multiple boards be used in parallel for higher protection coverage?

    Yes, multiple boards can be installed in parallel to extend transient suppression across additional power modules.