531X116SHAAAG2 | 24VDC 66.6A Redundant PSU

Description

Product Introduction

The 531X116SHAAAG2 is a high-capacity power supply for the most demanding Mark V rack configurations, delivering 1600W with a comprehensive feature set including load-sharing, remote sensing, diagnostic data logging, and USB log download. It’s built for critical turbine applications where every amp counts and power continuity is essential.

Compared to the 531X116SHAAAG1, the “G2” revision extends hold-up from 140ms to 145ms, expands data logging memory from 1000 to 2000 events, and reduces inrush current from 30A to 29A. The terminal assignment is identical—direct drop-in. No firmware changes required.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

Q: What’s the difference between the AAAG2 and the AAEG1?
The AAEG1 has longer hold-up (150ms vs. 145ms), a larger data log (5000 events vs. 2000), and lower inrush (28A vs. 29A). The AAAG2 is a slightly lower-spec version of the 1600W family—it’s a good option if you don’t need maximum hold-up or logging capacity, and it’s typically priced lower. For most applications, the AAAG2 is more than sufficient.

Q: The Fault LED is red, but the DC OK LED is green. What’s happening?
Green DC OK means the 24V output is within spec. Red Fault indicates an internal warning—typically overtemperature (fan failure) or input voltage out of range. The data logger captures the fault, and the USB port allows quick log download for analysis.

Q: Can I run two AAAG2 supplies in parallel for redundancy?
Yes—the AAAG2 has OR-ing diodes and hardware load-sharing. Connect DC outputs together (+24V to +24V, 0V to 0V), connect load-share signal terminals together, connect remote sense terminals together, connect RS-485 terminals together (daisy-chain), and feed AC inputs from separate breakers. The supplies share the load within ±1%. Each supply has its own data log.

Q: Can I hot-swap the AAAG2 while the rack is powered?
Yes, in redundant configurations (two supplies in parallel). In a single-supply config, pulling the supply shuts down the rack. If redundant, verify the OR-ing diodes are present before pulling one.

Q: What’s the expected lifespan of the AAAG2?
The electrolytic capacitors are rated for 12,000 hours at 85°C. In a 40°C cabinet, the lifespan extends to about 18-22 years. The modular fan cartridge with dual ball-bearing fans is rated for 80,000 hours at 40°C (about 9.1 years). Replace the fan cartridge every 5-7 years proactively.

Q: What’s the lead time for a surplus unit?
We keep 2-3 units in stock. Domestic: 2-3 business days ground, overnight if ordered by 2 PM EST. International: 5-7 days via DHL, with customs potentially adding 1-3 days. We include a GE certificate of origin and commercial invoice with every shipment. Contact us if you need expedited shipping.

EPRO PR6423/003-030
WESTINGHOUSE 5X00605G01
ABB 81EU01E-E
HONEYWELL CC-PCNT01