DS3815PFPB | GE Speedtronic IS200 Power Board | Ready to Ship

Description

Product Introduction

The GE DS3815PFPB is a high-performance power supply module for the Mark VI Speedtronic turbine control rack, configured for 240 VAC input with extended temperature capability, enhanced output filtering, and ruggedized construction. This IS200-series PSU converts a standard 240 VAC single-phase supply into the regulated DC voltages required by the CPU, I/O boards, and backplane. It combines the extended temperature rating of the PFCA variant with enhanced filtering and mechanical robustness for demanding AC-powered installations.

The DS3815PFPB provides three output rails: 48 VDC for the CPU bus, 24 VDC for field device loop power, and 5 VDC for logic-level circuits. Total output capacity is 250W with ripple reduced to <20 mV on the 5V rail. The F in the suffix indicates 240 VAC input. The P in this context indicates the base series with specific component selection. The C in the suffix indicates extended temperature rating (-40 to +75°C). The B in the suffix indicates a specific manufacturing revision with enhanced filtering and ruggedized construction. This is the premium AC-powered PSU for high-temperature installations with sensitive analog measurements and vibration concerns. The module includes the same backplane-specific connector as all Mark VI power supplies, sliding directly into the rack and communicating status (voltage good, overcurrent, overtemperature) to the CPU via discrete signals.

Key Technical Specifications

Key Selling Points & Differentiators

• Enhanced Output Filtering: <20 mV ripple on the 5V rail and <50 mV on 24V/48V rails. Protects sensitive analog measurements (thermocouples, vibration probes, 4-20mA) from power supply noise.
• Vibration-Resistant Construction: Large components secured with industrial adhesive. Reinforced solder joints on critical connections. Designed for turbine decks, compressor stations, and other high-vibration environments.
• 240 VAC Input Compatibility: Direct solution for plants with standard AC power available. No DC battery bank or rectifier required. Simplifies panel design.
• Extended Temperature Range: Rated for -40 to +75°C ambient—5°C higher than standard PFAA variants. Uses 105°C-rated capacitors and higher-grade semiconductors.
• Full 250W Capacity: Sufficient for heavily populated 15-slot racks with multiple I/O modules.
• Full Load Bank Test at Elevated Temperature: Every unit runs on our test rig at +75°C ambient for 24 hours, pulling full 250W load. We measure output ripple with a 100 MHz oscilloscope and perform visual inspection for component security. Capacitors replaced on units manufactured before 2015.
• Surplus/Refurbished with 1-Year Warranty: New surplus (original GE packaging) or professionally refurbished. 1-year warranty, 30-day return.

Frequently Asked Questions (FAQ)

Q: What’s the difference between DS3815PFCA and DS3815PFPB?

Filtering, vibration resistance, and manufacturing revision. The PFCA has standard filtering (<50 mV on 5V) and standard mechanical construction. The PFPB has enhanced filtering (<20 mV on 5V), vibration-resistant construction (components secured with adhesive), and the B revision improvements (longer hold-up, refined components). Both accept 240 VAC input and have extended temperature rating. The PFPB is the premium AC-powered version—it combines everything: AC input, extended temp, enhanced filtering, and vibration resistance.

Q: What’s the difference between DS3815PFPB and DS3815PFLA?

Vibration resistance and revision. The PFLA has enhanced filtering (<20 mV on 5V) but standard mechanical construction (no vibration-specific enhancements). The PFPB has enhanced filtering AND vibration-resistant construction, plus the B revision improvements. Both accept 240 VAC input and have extended temperature rating. Choose PFPB for high-vibration environments with sensitive analog. Choose PFLA for low-vibration environments with sensitive analog.

Q: What’s the difference between DS3815PFPB and DS3815PFMA?

Filtering. The PFMA has MIL-spec conformal coating and vibration-resistant construction but standard filtering (<50 mV on 5V). The PFPB has enhanced filtering (<20 mV on 5V) and vibration-resistant construction but no conformal coating. Both accept 240 VAC input and have extended temperature rating. Choose PFPB for clean, high-vibration environments with sensitive analog. Choose PFMA for corrosive, high-vibration environments without sensitive analog. Choose PFLC (if available) for corrosive, high-vibration environments with sensitive analog.

Q: Can I use this PSU to power a full 15-slot Mark VI rack?

Yes—the PFPB delivers 250W total, sufficient for a fully populated rack in most configurations. At temperatures above 65°C, derating applies. At 75°C, you lose approximately 25% of capacity—down to about 187W. Calculate your actual load and cabinet temperature. The enhanced filtering is especially valuable if your rack has multiple thermocouple or analog input modules in a vibration environment.

Q: Can I run this PSU from 120 VAC instead of 240 VAC?

No. The input range is 180-264 VAC only. Feeding 120 VAC will cause the PSU to brown out, and the CPU will repeatedly reset. If you only have 120 VAC available, you need a step-up transformer. Check your panel’s power distribution before ordering.

Q: What’s the correct input terminal configuration?

The input terminals are labeled “L” (Line/Hot), “N” (Neutral), and “GND” (Ground) on the front panel. Connect 240 VAC single-phase to L and N. Ground the chassis via the GND terminal. Do not connect DC to these terminals.

Q: Can I run two PFPB units in redundant configuration?

Yes—the PFPB supports active current sharing for N+1 redundancy. Two units in parallel will each run at approximately 50% load, reducing internal heating and extending component life, especially at high temperatures and in vibration environments. Both units must be fed from the same AC source (or synchronized sources) to maintain proper current sharing. We can supply matched pairs tested for current sharing across the full temperature range.

Q: What are the status LED patterns indicating?

Three LEDs on the front panel: DC OK (green), Overload (yellow), Overtemperature (red). Normal: green steady, yellow off, red off. If yellow is steady, you’re in current limit. If red is on, the PSU is overtemperature—check cabinet ventilation.

Q: Is there a fuse on this board that I can replace in the field?

There is an internal input fuse, but it’s not user-replaceable. The fuse is soldered to the PCB. If the PSU doesn’t power up, it’s likely a wiring issue, blown input fuse, or internal failure. Do not open the casing—the primary side holds dangerous voltages. Send it to us for evaluation.

Q: Can I use a standard 240 VAC DIN-rail power supply instead of this board?

No. The DS3815PFPB is a backplane-specific module with proprietary connector and output ramp timing. A DIN-rail supply won’t match the timing, won’t have vibration-resistant construction, and won’t meet the enhanced filtering specs. Stick with the original board.

Q: I have a hot turbine deck with 240 VAC, vibration, and sensitive analog. Should I choose PFPB?

Yes—this is exactly the application for the PFPB. It gives you AC input (no battery bank required), extended temperature range for the hot deck, vibration-resistant construction for the turbine environment, and enhanced filtering for sensitive analog measurements. It’s the premium AC-powered PSU that covers all the bases for demanding turbine installations.

Q: Is the PFPB compatible with standard Mark VI racks?

Yes—it fits the same IS200 backplane slot as all other DS3815 PSU variants. No adapter plates or mechanical modifications needed. Direct swap for any other DS3815 PSU—same dimensions, same connector, same terminal layout. No software changes required. Just ensure you’re connecting 240 VAC to the input terminals, not DC.

ABB 3HAC025338-006
A-B 1326AB-B515E-21
ABB DSSR122 48990001-NK
ABB DSSR122 48990001-NK