GE IS200EDEXG1BBB

Reliable De-Excitation for Generator Systems

Generator excitation systems require dependable protection during shutdowns, electrical faults, and emergency trips. The GE IS200EDEXG1BBB is designed to support this process through controlled generator field de-excitation.

As part of the EX2100 excitation platform, this board manages important firing and feedback functions within the de-excitation circuit. It helps coordinate the release of stored magnetic energy when the generator field circuit is disconnected.

Furthermore, its voltage retention and backup firing functions contribute to dependable operation under abnormal power conditions.

Operating Characteristics

The de-excitation process involves several coordinated stages. First, the control system initiates a shutdown or protection command. Next, associated excitation modules transfer the required signals to the de-excitation circuit.

The board then supports SCR triggering, allowing the generator field energy to dissipate through the designated discharge circuit. It also provides conduction feedback to support proper circuit operation.

If normal triggering is unsuccessful, an additional voltage-triggered mechanism can provide backup SCR activation, depending on the installed circuit configuration.

Technical Specifications

• Manufacturer: General Electric

• Model: IS200EDEXG1BBB

• Functional Description: Exciter De-Excitation Board

• Compatible Platform: GE EX2100 / EX2100e

• Rated Control Supply: 24 V DC nominal

• Input Signal Interface: EXTB

• Main Switching Technology: Silicon-Controlled Rectifier (SCR)

• Operating Temperature: -30°C to +65°C

Design Advantages

Coordinated Control

The board operates alongside the EMIO and EXTB modules. Therefore, de-excitation commands can be transferred through the excitation control architecture in an organized manner.

Backup Protection Capability

Its firing circuitry supports redundant control functions. This design helps maintain the de-excitation process when normal triggering conditions are interrupted.

Stable Control Power

The voltage hold-up circuit helps retain control voltage on the positive and negative 24 V DC lines during power interruptions.

Flexible Circuit Configuration

Connection points and configurable components support adaptation to different SCR circuit requirements. However, configuration must follow the applicable GE engineering documentation.

Industrial Applications

The product is primarily associated with generator excitation and protection equipment. Typical applications include thermal power stations, gas turbine power plants, industrial generator installations, and other facilities using compatible GE excitation systems.

It is particularly important in systems where controlled shutdown and reliable field-energy dissipation are essential.

Maintenance Recommendations

To maintain dependable performance, technicians should periodically inspect the board, connectors, and associated wiring. Check for abnormal heating, loose connections, contamination, and signs of component deterioration.

Additionally, verify the SCR firing circuit and feedback signals during scheduled system inspections. Always follow the manufacturer's technical documentation when replacing or configuring the board.

————————————————————————————————————————————————————————————————————————

Xingruijia

Original factory direct supply, quality assurance - GE module professional supplier

Consult now to obtain the latest technical information and quotation for GE modules!

·Manager: Jinny                                         ·E-mail: sales1@xrjdcs.com     

·Tel: + 86-15359273791（WhatsApp）   ·Wechat: + 86-15359273791

————————————————————————————————————————————————————————————————————————