Description

IS200ERDDH1A technical specification
Alphanumeric catalog number: IS200ERDDH1A
Function gate drive control to control excessively high DC bus voltage
Installation location: Simplex ERBP backplane. Redundancy ERBP backsheet and ERRB backsheet
Operation mode: simplex or redundant
Redundant mode control: K41 de-excitation relay
Series: EX2100 Excitation Controller
Simplex mode control: K3 charging relay
Operating temperature: -40°C to + 85°C
Protection grade: IP40 (front panel)
Installation method: Standard 19-inch rack-mounted, supporting DIN rail or panel fixation, with dimensions approximately 200mm×150mm×80mm.

The General Electric (GE) IS200ERDDH1ABA is a dynamic discharge board for excitation regulators specifically designed for power generation and industrial control systems. It belongs to the EX2100 series and is mainly used for excitation control and fault protection of synchronous generators. The following is a comprehensive analysis based on multi-source information:
Core functions and technical features
Excitation control and dynamic discharge
Voltage regulation: The output voltage of the generator is controlled by adjusting the excitation current, supporting a voltage regulation range of ±10% to ensure the stable operation of the power grid.
Dynamic discharge: When the generator is overvoltage or malfunctions, it can quickly release the energy storage (with a maximum discharge power of 200 kW) and a millisecond-level response time (<50 ms), protecting the equipment from surge damage.
Redundancy mode support: Configurable simplex or dual redundancy mode is available. In simplex mode, the charging relay (K3) is controlled, and in redundancy mode, the demagnetization relay (K41) is controlled to enhance system reliability.
(2) Monitoring and Protection
Real-time monitoring: The IS200ERDDH1A monitors the output field voltage, DC link voltage, shunt current and IGBT gate drive status through the analog interface, and supports overcurrent (>120% rated value) and undervoltage (<80% rated value) protection.
Temperature management: Built-in temperature sensor. When the temperature of the bridge exceeds 85°C, it triggers the shutdown to prevent overheating damage.
(3) Communication and interface capabilities
Protocol compatibility: Supports RS-232, RS-485, CAN bus and Ethernet, and can be seamlessly integrated with the GE Mark VI/VIe control system to achieve remote parameter configuration and status monitoring.
Physical interface:
Analog input: 5 channels of attenuated voltage signals (±10V DC), for voltage feedback regulation.
Digital input/output: Supports 24V DC dry contacts for controlling relays or receiving external instructions.

2. Application Scenarios and Typical configurations
(1) Power system
Generator excitation control: The IS200ERDDH1A, in coal-fired, gas-fired or nuclear power plants, cooperates with the GE EX2100 excitation system to achieve voltage stability and reactive power distribution of synchronous generators.
Enhanced grid stability: By using the dynamic discharge function to suppress system oscillations, it is suitable for grid connection protection of high-voltage transmission lines (such as 220kV and above).
(2) Industrial Automation
Large motor drive: In industries such as metallurgy and petrochemicals, it is used to drive high-power synchronous motors to ensure the reliable operation of equipment under high loads.
Emergency power supply system: In the backup diesel generator, it provides rapid excitation response to ensure the stability of emergency power supply.
(3) Rail transit
Traction power supply system: In high-speed railways or subways, it works in conjunction with traction converters to achieve rapid release of regenerative braking energy and voltage regulation.

3. Technical parameters and environmental adaptability
(1) Electrical parameters
Input voltage: 18-30V DC (Wide range design, compatible with different power supply specifications).
Output voltage: 0-1200V DC (dynamic discharge range).
Power consumption: ≤10W (under typical operating conditions).