Description
The Pioneer Magnetics PM3328B-6-1-3-E (Part Number: 80026-524-01) is a rugged, industrial-grade switch-mode power supply (SMPS) designed for high-availability systems. Known for its high power density and reliability, this unit is typically utilized in mainframe computing, large-scale telecommunications, and mission-critical industrial automation racks.
Product Parameters (Datasheet)
- Model Number: PM3328B-6-1-3-E
- Part Number: 80026-524-01
- Input Voltage: 3-Phase AC (Typically 180–264 V AC)
- Output Voltage: 5 V DC (Standard for the “6” code in this series)
- Max Output Current: Approx. 300 A to 400 A (Dependent on specific sub-configuration)
- Total Power: ~2000 Watts
- Efficiency: > 80% at full load
- Cooling: Integrated high-velocity ball-bearing fans (Internal)
- Form Factor: Rack-mountable (Modular high-power chassis)
- Protection: Over-voltage, over-current, and thermal shutdown protection
PIONEER PM3328B-6-1-3-E 80026-524-01
PIONEER PM3328B-6-1-3-E 80026-524-01
PIONEER MAGNETICS PM3328B-6-1-3-E 80026-524-01
Country of Origin
This power supply unit is engineered and manufactured by Pioneer Magnetics, Inc. in the USA, a company specialized in custom high-power solutions for aerospace and industrial sectors.
Application Fields
The PM3328B series is designed for environments where power failure is not an option:
- Supercomputing & Mainframes: Providing stable low-voltage, high-current power to massive processor arrays.
- Telecommunications: Powering central office switching equipment and fiber optic hubs.
- Industrial Laser Systems: Supplying the high-current DC required for laser diode drivers.
- Medical Equipment: Used in large-scale diagnostic imaging systems (MRI/CT scanners).
- Test & Measurement: Acting as a high-capacity power source for semiconductor burn-in racks.
Product Usage Instructions
- Input Connection: This unit requires a 3-phase AC input. Ensure that the phase rotation is correct and that the wiring gauge is sufficient to handle the high input current.
- Mounting: The unit is heavy and generates significant heat. It must be mounted in a rack with at least 1U of clearance above and below, or within a forced-air cooled enclosure.
- Output Busbars: Due to the extreme output current (300A+), do not use standard wire. Use solid copper busbars or multiple heavy-gauge cables with crimped lugs to connect to the load.
- Remote Sensing: To compensate for voltage drops across the output cables, connect the “Remote Sense” terminals directly to the load.
- Monitoring: Utilize the “Power Good” and “Inhibit” signals to interface with the system controller for automated startup and shutdown sequences.
Product Technical Description
The PM3328B series utilizes a sophisticated 3-phase power factor correction (PFC) front end followed by a high-frequency DC-DC converter. Technically, it employs a phase-shifted full-bridge topology to minimize switching losses and electromagnetic interference (EMI). The unit is designed with “hot-swap” capabilities in mind, featuring internal or-ing diodes that allow multiple units to be connected in parallel for N+1 redundancy. The 80026-524-01 revision specifically includes enhanced filtering to meet stringent ripple and noise requirements for sensitive digital logic, ensuring that the 5V output remains stable even under rapid load transients.
Q&A (Common Questions)
- Q: The “Input Fault” LED is on, but I have power at the breaker. What’s wrong?
- A: Check for a missing phase. These units monitor all three phases; if one phase is lost or the voltage is significantly unbalanced, the unit will shut down to protect the internal circuitry.
- Q: Can I adjust the output voltage?
- A: Yes, there is typically a multi-turn potentiometer located near the output terminals that allows for a ±5% adjustment (e.g., 4.75V to 5.25V).
- Q: Are the fans replaceable?
- A: Yes, the fans are high-quality industrial components. If a fan fails, the unit’s thermal protection will eventually trigger. It is recommended to replace fans every 5 years in continuous-duty applications.
- Q: Is this unit compatible with 480V input?
- A: No. The standard PM3328B is designed for 208/230V 3-phase. Connecting it to a 480V source will cause catastrophic damage.
Similar Model Recommendations
- Pioneer Magnetics PM33210B: A higher-voltage variant (typically 12V or 24V).
- Pioneer Magnetics PM3329B: Enhanced version with digital communication interfaces (I2C/PMBus).
- Vicor Westcor MegaPAC: Modular alternative for multi-output high-power needs.
- Lambda/TDK Genesys: Programmable high-power rack supplies.
- Emerson/Artesyn MP Series: Configurable high-power industrial supplies.
For technical manuals or to request a quote for the Pioneer Magnetics PM3328B, please contact our power electronics technical team.
