GE Fanuc DS3828BH5A | Power Supply Board | Fast Ship

Description

Product Introduction

The GE DS3828BH5A is a high-capacity power supply module for the Speedtronic Mark V turbine control system, providing regulated DC power distribution for densely populated chassis configurations with multiple I/O and communication modules. This board mounts directly into the Mark V rack, converting nominal 125 VDC plant battery power into isolated, regulated DC voltages with higher current capacity than standard power supply modules.

The “BH5A” designation indicates a power distribution module with higher output capacity—150W total versus 100W on the BH3A series. This board provides +5 VDC for logic circuits, ±15 VDC for analog circuits, and +24 VDC for field devices, with increased current ratings on each output. It includes input surge protection, output short-circuit protection, and thermal monitoring. The DS3828BH5A is designed for Mark V chassis configurations that approach full capacity, such as systems with multiple servo-output modules, communication boards, or additional I/O racks.

Key Technical Specifications

Key Selling Points & Differentiators

• High output capacity. 150W total output—50% more than the BH3A series—for densely populated chassis configurations.
• Increased current ratings. +5V at 15A (versus 10A on BH3A), ±15V at 3A (versus 2A), and +24V field at 2A (versus 1A).
• Complete chassis power solution. Provides all required voltages for Mark V modules in a single slot.
• Overload protection. Individual current limiting on each output with auto-recovery, eliminating nuisance fuse changes.
• Input transient protection. Built-in MOV suppresses voltage spikes from the plant DC bus.
• Thermal monitoring. Overtemperature shutdown prevents damage from excessive cabinet heat.
• Redundant operation capable. Multiple BH5A modules can be paralleled for N+1 redundancy.
• 48-hour burn-in at full load. Every unit is tested at full rated load for 48 hours, with output voltages monitored for drift and ripple.
• 18-month warranty covering output regulation and protection circuits. If the board fails to maintain output voltages or protection circuits malfunction, we replace it.

Frequently Asked Questions (FAQ)

Q: What is the difference between the BH5A and the BH3A?

A: The BH5A has higher output capacity—150W versus 100W on the BH3A. Current ratings are increased: +5V at 15A (versus 10A), ±15V at 3A (versus 2A), and +24V field at 2A (versus 1A). The BH5A also has a larger input fuse (8A versus 5A). Physical dimensions, pinout, and voltage outputs are identical.

Q: When would I need the BH5A instead of the BH3A?

A: The BH5A is needed for Mark V chassis configurations that approach full capacity—typically systems with multiple servo-output modules (DS3820SMTx), communication boards, or additional I/O modules that draw more current than the BH3A can supply. If your chassis is fully populated or you plan to expand, the BH5A provides headroom.

Q: Is the BH5A a direct replacement for the BH3A?

A: Yes—mechanical and electrical compatibility is 100%. Same form factor, same DIN connector, same pinout, same field wiring. The BH5A drops into the same slot and provides the same output voltages with higher current capacity. No software changes are required.

Q: Can the BH5A supply power to multiple Mark V chassis?

A: The BH5A is designed for a single chassis backplane. It provides power to the modules installed in that chassis. Power distribution to multiple chassis would require separate power supplies.

Q: Does the BH5A require forced-air cooling?

A: Yes—the BH5A is rated for operation with forced-air cooling (200 LFM minimum) as provided by the Mark V cabinet’s fan system. Operating the board without adequate airflow can cause overtemperature shutdown and reduced service life.

Q: Does the BH5A have short-circuit protection on the outputs?

A: Yes—each output has current-limiting protection. If a short circuit occurs, the output current will be limited to a safe value, and the board will auto-recover when the short is removed. The higher current rating allows the BH5A to support more demanding loads before limiting occurs.

Q: What is the warranty on the BH5A?

A: 18 months from shipment, covering output regulation, protection circuits, and component reliability. If the board fails to maintain output voltages or protection circuits malfunction, we replace it. The warranty does not cover physical damage or miswiring.

Q: Do you have many BH5A boards in stock?

A: The BH5A is a higher-capacity variant with moderate production quantities. We typically have 3-5 units in stock. If you need larger quantities, contact us directly to confirm availability. This board is valuable for expanding or densely populated Mark V chassis configurations.

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