Description
Product Introduction & Engineering Value
A failed DC power module can bring down communication equipment, industrial controllers, or remote infrastructure without warning. The challenge is not only restoring voltage output; it is replacing the failed unit without interrupting the remaining power architecture. The UNIPOWER TPCM7000 was developed for this exact maintenance scenario.
The PowerCassette design allows hot replacement in compatible racks, with current sharing and ORing protection supporting redundant configurations. For legacy telecom and industrial DC systems, maintaining a tested TPCM7000 spare can reduce recovery time and avoid complete rack replacement.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | UNIPOWER |
| Model | TPCM7000 |
| Series | PowerCassette / Radian TPCM Series |
| Module Type | Hot-swappable AC-DC rectifier |
| Input Voltage Range | 85–264VAC |
| Output Voltage | 48VDC |
| Maximum Output Power | 800W |
| Maximum Output Current | 16.7A |
| Power Factor Correction | Included |
| Standby Output | Isolated 5V standby supply |
| Cooling Option | Optimized thermal management |
| Mounting | 19-inch rack PowerCassette shelf |
| Redundancy Support | Active current sharing / redundant rack operation |
| Communication Option | I²C monitoring option available |
Field Application & The “Trench” Experience
A railway communication facility operating remote signaling equipment experienced a rectifier module failure during normal service hours. The DC bus remained powered because the rack was configured with multiple PowerCassette modules, but the failed position generated a maintenance alarm.
The engineering team identified the failed UNIPOWER TPCM7000, verified the output voltage and rack configuration, and replaced the module without shutting down the DC distribution system. After insertion, the rack completed current sharing automatically and returned to normal operating status.
Typical application scenarios include:
- Telecom DC Power Shelters — maintaining 48VDC supply for communication equipment
- Railway Signaling Power Systems — supporting redundant DC infrastructure
- Industrial Remote Control Cabinets — powering network equipment, RTUs, and automation hardware
TPCM7000
TPCM7000
Transparency SOP: QA & Testing
For UNIPOWER TPCM7000 new surplus and refurbished inventory, the verification process should include:
Inspection and Functional Test Procedure
- Verify UNIPOWER label, model number, and configuration.
- Inspect housing, connectors, and front indicators.
- Check for capacitor leakage, corrosion, or mechanical damage.
- Verify AC input response.
- Confirm 48VDC output regulation.
- Test standby voltage output.
- Check LED status functions.
- Verify load response under controlled conditions.
- Confirm hot-swap behavior when compatible rack equipment is available.
- Record test results and warranty status.
A rectifier module should be tested under electrical load. A simple no-load power-up test does not confirm current-sharing performance or output stability.
The Veteran’s Tech Trap Guide
⚠️ Do not confuse TPCM7000 with TPCP7000.
The two models belong to related UNIPOWER families but have different power configurations. The TPCM7000 is an 800W 48VDC hot-swap module, while other PowerCassette models may provide different output ratings.
⚠️ Check the rack shelf before installation.
The TPCM7000 is designed for PowerCassette rack systems. A correct rectifier installed in an incompatible shelf will not operate correctly.
PRO TIP: Before removing a failed module, record LED status, output current sharing behavior, and rack alarm information. These details help distinguish a rectifier failure from a system-level DC bus problem.
⚠️ Verify airflow direction options.
Some TPCM models include reverse airflow options with output derating. Confirm the installed cooling arrangement before replacement.
Dynamic FAQ
Q1: What is the UNIPOWER TPCM7000 used for?
The TPCM7000 is a 48VDC hot-swappable AC-DC rectifier module used in PowerCassette rack power systems.
Q2: What are the main electrical ratings of the TPCM7000?
The module accepts 85–264VAC input and provides up to 800W output at 48VDC and approximately 16.7A.
Q3: Is the TPCM7000 a standalone power supply?
It can operate as an individual module, but it is primarily designed for integration into compatible PowerCassette rack systems.
Q4: Can the TPCM7000 be hot-swapped during operation?
Yes, when installed in a compatible UNIPOWER PowerCassette rack configuration designed for hot replacement.
Q5: How are refurbished TPCM7000 modules tested?
Testing should include visual inspection, AC input verification, 48VDC output testing, load testing, indicator verification, and rack compatibility checks.
Q6: Is new surplus UNIPOWER TPCM7000 available?
Availability depends on remaining lifecycle inventory. Buyers should confirm model configuration, revision details, test records, and warranty coverage before purchase.
Q7: What information is needed to replace a TPCM7000?
Provide the rack model, existing rectifier model, output voltage requirement, airflow configuration, and photos of the installed power shelf.
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