DS200ADGIH1AAA GE 2000V DC Generator Interlock Control Board

High-Voltage Generator Interlock and Control Interface

General Electric engineered the DS200ADGIH1AAA for critical generator protection. This Auxiliary DC 2000V Generator Interlock Card operates within EX2000 excitation systems. It provides essential interlock and control functions for high-voltage DC auxiliary systems in gas turbine applications.

Core Technical Specifications

• Manufacturer & Model: General Electric DS200ADGIH1AAA
• Product Type: Auxiliary Interface Board
• Series: EX2000 Excitation Control System
• Analog Output: 0-20 mA current loop
• Power Requirements: +5 VDC
• Operating Temperature: -30°C to +65°C
• Board Size: 8 × 6 inches (17.8 × 33.02 cm)

High-Voltage DC Auxiliary System Interface

• Interfaces with 2000V DC auxiliary system for generator excitation
• Supports static excitation systems with thyristor bridge control
• Derived from station battery or dedicated auxiliary DC bus
• Critical for generator field winding excitation applications
• Coordinates with excitation control systems and brushless exciters
• Essential for safe turbine-generator startup and shutdown

Interlock and Control Functions

• Hardwired logic and PLC-based interlock enforcement
• Generator breaker cannot close without established field voltage
• Field flashing blocked until permissive signals are satisfied
• Turbine at rated speed and field breaker closed verification
• 2kV DC system faults trigger turbine control system trips
• Fast-acting interlocks for overvoltage, overcurrent, ground fault

Protection Relay Coordination

• ANSI 59 overvoltage protection interface
• ANSI 64 ground fault detection coordination
• ANSI 87G generator differential protection
• ANSI 40 loss of excitation protection
• Synchronizing relays for grid synchronization
• Turbine supervisory instruments for mechanical readiness

System Compatibility

• Matches control logic with turbine controllers via discrete I/Os
• Relay logic and Modbus/TCP signal compatibility
• Coordinates with Excitation Control Systems (Basler DECS, GE EX2100)
• Works with breaker management relays (SEL-751, GE Multilin SR489)
• Integrates with Mark VIe, Woodward, and Allen-Bradley PLCs
• Seamless interfacing with generator control panels

Installation Requirements

• Housed within excitation cabinets and generator control panels
• High-voltage DC cabling with insulation rated above 2kV
• Robust grounding systems for operator safety
• Interconnection with analog/digital I/Os of turbine control system
• Interface relays, fuses, and isolators for circuit segmentation
• Strict segregation and shielding for noise prevention

Physical Board Components

• One 40-pin connector for main system interface
• Sixty jumpers for flexible configuration options
• One 6-pin connector for auxiliary connections
• Multiple test points for circuit verification
• Four screw mounting points for rack installation
• Designed for drive cabinet mounting

Testing and Servicing Requirements

• Qualified servicer only for board testing
• Calibrated testing equipment designed for the task
• Proper control settings and compatible test probes
• Place board on flat surface with protective bag underneath
• Test points provide means to verify circuit functionality
• Regular testing ensures reliable operation

ESD Protection Procedures

• Wrist strap must be worn at all times during handling
• Attach one end to wrist and other to metal workbench leg
• Static attracted to metal ground exits board and body
• Avoid moving while holding board to prevent static buildup
• Static risk increases during cool and dry weather conditions
• If no wrist strap, touch static bag to metal structure

System Integration

• Part of Mark V Turbine Control System Series compatibility
• Designed for steam and gas turbine automated drive assemblies
• Normal assembly type with three revision history
• Backwards compatible with first two revisions
• Manufactured by GE General Electric
• United States origin with quality construction

Application Areas

• Gas turbine excitation control systems
• Generator field flashing and excitation control
• High-voltage DC auxiliary power distribution
• Turbine-generator synchronization sequences
• Emergency shutdown and fault protection
• Generator control panel integration

Product Availability & Services

• Current Status: In stock for immediate shipment
• Repair Services: 3-7 day repair turnaround available
• New and original General Electric component
• Complete with necessary documentation
• Ready for integration into excitation systems
• Manufactured to industrial quality standards

Shipping & Delivery

• Fast shipping via FedEx, UPS, and DHL services
• Orders typically ship within 24 business hours
• International shipping available worldwide
• Complete tracking information provided
• Professional packaging ensures board protection

Frequently Asked Questions (FAQ)

What is the primary function of this board?

• The DS200ADGIH1AAA provides interlock and control functions for 2000V DC auxiliary systems supporting generator excitation and protection.

What voltage systems does it interface with?

• Interfaces with 2000V DC auxiliary systems derived from station batteries or dedicated DC buses for generator field excitation.

What protection relays does it coordinate with?

• Coordinates with ANSI 59, 64, 87G, and 40 protection relays for overvoltage, ground fault, differential, and loss of excitation protection.

What are the power requirements?

• Requires +5 VDC power supply and provides 0-20 mA analog output for control and monitoring functions.

What installation precautions are required?

• Requires high-voltage cabling with 2kV+ insulation, robust grounding, strict signal segregation, and proper ESD protection procedures.

What testing provisions are included?

• Features multiple test points for circuit verification, requiring qualified servicers with calibrated testing equipment.