DS200PTBAG1B GE

Key Technical Parameters

Advantages & Core Features

• Enhanced current handling capacity – The DS200PTBAG1B provides higher current ratings on all primary voltage rails (+5V from 10A to 15A, ±15V from 3A to 5A, +24V from 2A to 3A, +3.3V from 0.5A to 1A) and adds a new +12V auxiliary rail. This supports denser I/O configurations, multiple processor boards, and high-power communication modules that the “A” revision cannot accommodate.

• Additional +12V auxiliary rail – The new +12V output provides power for peripheral equipment or specialized modules that require a 12V supply, eliminating the need for external power supplies.

• New +12V auxiliary rail – Provides power for peripheral equipment or specialized modules that require a 12V supply, eliminating the need for external power supplies.

• Increased fuse protection – With 10 fuses and higher current ratings, the DS200PTBAG1B provides more comprehensive protection for the expanded power capacity, ensuring fault isolation even under high-load conditions.

• Expanded test points – Ten test points (TP1-TP10) allow technicians to measure voltages directly on the board without probing backplane connectors or module pins, simplifying diagnostics.

• Individual rail fusing – Each voltage rail is protected by an individual fast-acting fuse. This prevents a single module fault from bringing down the entire system.

• Fuse status LEDs – Green/red LEDs for each fused rail provide immediate visual indication of fuse status, speeding up maintenance.

• Dual-source input capability – Accepts both 28 VDC and 125 VDC inputs from redundant power supplies, enabling seamless transfer between power sources.

• Compact 1-slot form factor – Despite the enhanced capacity, the board occupies a single slot in the Mark V rack, leaving more room for other modules.

Key Differences vs. DS200PTBAG1A (Base “A” Revision)

Application Cases

• High-density I/O gas turbine – A 500 MW combined-cycle plant with 32 analog inputs, 32 digital I/O, and 4 communication boards used the DS200PTBAG1B to provide the additional +5V current (15A) required for their dense configuration. The new +12V rail powers external communication converters.

• Dual-processor steam turbine – A nuclear facility with redundant processor boards and extensive monitoring used the DS200PTBAG1B to handle the higher ±15V (5A) and +24V (3A) demands. The expanded test points simplify voltage verification during maintenance.

• Compressor station with high-power communication – A pipeline facility using high-power MODBUS and PROFIBUS communication modules upgraded to the DS200PTBAG1B to provide the additional +3.3V standby current (1A) required for wake-on-LAN features.

• Hydroelectric plant with peripheral equipment – A dam facility used the new +12V rail on the DS200PTBAG1B to power external speed sensors directly from the Mark V rack, eliminating the need for separate power supplies.

Comparison with Related Variants

Selection Suggestions

1. Calculate your power requirements – Select the DS200PTBAG1B if your Mark V configuration requires more than:

   • 10A on +5V

   • 3A on ±15V

   • 2A on +24V

   • 0.5A on +3.3V
     Or if you need the +12V auxiliary rail.

2. Confirm rack slot availability – The board occupies a dedicated power slot in the Mark V rack (typically slot 1 or slot 2). Verify that the slot is available.

3. Verify fuse ratings – Ensure that the fuse ratings on the board match your system’s current requirements. Refer to the Mark V system manual for specific values.

4. Assess environmental conditions – The DS200PTBAG1B has no conformal coating. For harsh environments, consider the coated DS200PTBAG1ABA (though note it has lower capacity) or use external protective measures.

5. Evaluate future expansion – If you anticipate adding more I/O modules, the DS200PTBAG1B provides more headroom for future growth.

6. Procurement – The DS200PTBAG1B is very rare. Purchase from reputable suppliers offering functional testing (fuse and LED verification, voltage drop testing). Lead times: 10-14 weeks.

Important Precautions

• Power down completely – De-energize the entire rack before inserting or removing the DS200PTBAG1B. Hot-swapping is not supported.

• ESD protection – Use wrist strap and anti-static mat.

• Fuse replacement – Replace fuses only with specified types and ratings. The higher current ratings require appropriately sized fuses.

• Voltage verification – Always verify voltages at test points after installation before powering up downstream modules.

• Check total current draw – Ensure the total current draw on each rail does not exceed the board’s capacity.

• Cleaning – Use compressed air only (max 50 PSI). No liquids.

• Storage – Store at 10-30°C, 20-50% RH. Rotate every 24 months.

Final Expert Recommendation

The DS200PTBAG1B is an enhanced power terminal board designed for Mark V installations requiring higher current capacity than the base “A” revision. With 15A on +5V, 5A on ±15V, 3A on +24V, 1A on +3.3V, and a new +12V auxiliary rail, the DS200PTBAG1B supports high-density I/O configurations, dual-processor systems, and high-power communication modules that the “A” revision cannot accommodate.

Select the DS200PTBAG1B when:

• Your +5V load exceeds 10A

• Your ±15V load exceeds 3A

• Your +24V load exceeds 2A

• Your +3.3V load exceeds 0.5A

• You need the +12V auxiliary rail for peripheral equipment

• You anticipate future I/O expansion that will increase power demands

However, the DS200PTBAG1B has no conformal coating. For harsh environments, you must choose between:

• The DS200PTBAG1ABA (coated, but lower capacity) – if that capacity is sufficient

• The DS200PTBAG1B with external protective measures (sealed enclosures, conformal coating field application) – if the higher density is essential

For most applications, the DS200PTBAG1A (10A +5V) is sufficient for standard Mark V configurations. The DS200PTBAG1B should be reserved for high-density, high-power installations where the additional capacity is genuinely required.

When sourcing the DS200PTBAG1B, ensure functional testing of all fuses and LEDs is performed. With proper installation and configuration, this board will provide years of reliable, high-capacity power distribution for demanding Mark V turbine control systems.