531X302DCIAAG5 | In Stock GE 302 Series Mainframe

Description

Product Introduction

The 302 series is GE’s heavy-duty DC-powered chassis—built for the biggest drives and the harshest DC bus environments. The GE 531X302DCIAAG5 is a 10-slot rack with a 300W DC input module, capable of handling the high inrush and sustained current demands of multiple gate driver boards, I/O modules, and communication cards in a fully loaded system. It’s the chassis for large DC bus systems in steel mills, mines, and high-power test stands.

The model number is descriptive: “302” is the high-power DC chassis, “DCI” indicates DC input with isolation, “AA” is the standard filter, “G5″ is the revision with the 92mm fans and the 300W power module. The power module is a 300W DC-DC converter, providing 5V @ 20A, ±15V @ 5A, and 24V @ 10A—significantly more than the 301 series. The power module is field-replaceable (531X302PWR1) but not hot-swappable. The chassis includes the heavy-duty backplane, the G5 fans (92mm, 65 CFM), and the standard A-filter. The depth is 16.5” to accommodate the larger module and its heat sinks. One caveat: the 302 chassis is heavy (28 lbs empty) and requires a sturdy rack.

Key Technical Specifications

Compatible Replacement Models

✅ Drop-in Replacement:

• 531X302DCIAAG5 directly replaces 531X302DCIAAG4 and 531X302DCIAAG3. The G5 has the same 300W power module, same backplane, same dimensions. The only difference is the fans—the G5 has 92mm fans vs. 80mm on earlier revisions. Swap your boards and power module over.
• 531X302DCIA (earlier non-G): The AAG5 is the direct upgrade path. Same chassis, just with better cooling. If you have a non-G chassis, the AAG5 is a drop-in replacement.

⚠️ Software Compatible (Requires Recompile):

• None. The power module is a dumb power supply—no communication, no configuration. No recompile needed.

❌ Hardware Incompatible:

• 531X302DCIAAG5 with boards that exceed the total power budget: The 302 provides 300W total. Add up your board power consumption—if it exceeds 300W, you’ll need to move some boards to another chassis.
• 531X302DCIAAG5 with a 212-series AC power supply: The 302 is DC input only. The power bay is designed for the 302 DC module.
• 531X302DCIAAG5 with a master chassis that doesn’t support expansion: The 302 can be a master or expansion chassis. If you’re using it as an expansion, the master must support the 302 interface.

Frequently Asked Questions (FAQ)

Q: What’s the difference between the 302 and the 301 series?

A: The 302 is a high-power chassis (300W vs. 50W). It’s larger, heavier, and has a more robust backplane. The 302 can handle multiple gate driver boards and high-current I/O modules. The 301 is for smaller expansion racks with limited power needs.

Q: Can I use the 302 as a master chassis?

A: Yes. The 302 can be used as a master chassis (with a logic board) or as an expansion chassis. It has the same backplane as the 300 series but with higher power capacity.

Q: The G5 has 92mm fans. Is the cooling better than the G4?

A: Yes. The G5 has 92mm fans (65 CFM) vs. 80mm fans (45 CFM) on the G4. That’s a 44% increase in airflow. The chassis runs about 8°C cooler at full load—important for a 300W chassis.

Q: Can I use the 302 with a 24V DC input?

A: Yes. The DC power module accepts 24V, 48V, or 125V DC, jumper-selectable. At 24V input, the module draws up to 15A at full load—so ensure your DC bus can provide that current.

Q: Does the 302 have a ground lug?

A: Yes. There’s an M6 ground stud on the rear panel. Connect it to your plant grounding bar. This is required for safety and EMI performance.

Q: What’s the maximum number of gate driver boards I can power with the 302?

A: A typical gate driver board draws about 2.5A on the 5V rail. The 302 provides 20A on the 5V rail, so you could power up to 8 gate driver boards. The 24V rail is 10A, which is also sufficient for multiple boards. The limiting factor is the total power (300W).

Q: Can I use the 302 with a 120V AC input?

A: No. The 302 is DC input only. If you have AC power, you need the AC-input version (531X302ACIAxx). The 302 is for battery-backed or DC bus systems.

Q: Does the 302 come with the expansion cable?

A: No. The expansion cable (fiber-optic or backplane ribbon) is not included. The 302 has the ports for the cable, but you need to supply the cable separately.

Q: The 302 is 28 lbs empty. Is that a problem for rack mounting?

A: The 302 is heavy—use all four mounting screws on each rack ear. For high-vibration environments, we recommend support rails under the chassis. The weight is within the standard 19″ rack capacity, but it’s near the upper end. Ensure your rack rails are rated for the weight.

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