PQ3450 - Measuring equipment Extech - Free user manual and instructions
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| Product Type | 3-Phase Power Quality Analyzer |
| Model | PQ3450 |
| Brand | Extech |
| Measurement Parameters | AC/DC voltage, current, power, energy, power factor, phase angle, frequency |
| True RMS | Yes |
| Number of Phases | 3-phase, 4-wire systems |
| Data Logging | Built-in memory for long-term data logging |
| Display | Backlit LCD with multi-function readout |
| Interfaces | USB and SD card for data transfer |
| Harmonics Analysis | Up to 50th harmonic order |
| Power Supply | Rechargeable battery and AC adapter |
| Battery Life | Approximately 8 hours of continuous use |
| Dimensions | 250 x 120 x 55 mm (estimated from typical analyzers) |
| Weight | 600 g (estimated) |
| Safety Rating | CAT III 600V |
| Standards | IEC 61010-1 |
| Operating Temperature | 0°C to 50°C |
| Storage Temperature | -20°C to 60°C |
| Accessories Included | Test leads, alligator clips, USB cable, software CD, user manual |
| Maintenance | Clean with a dry cloth; do not use solvents |
Frequently Asked Questions - PQ3450 Extech
How do I connect the PQ3450 to a three-phase system?
Connect the voltage test leads to the L1, L2, L3 and N terminals. For current, clamp each phase conductor with the appropriate current transformer. Ensure correct phasing to avoid inaccurate readings.
What is the maximum input voltage for the PQ3450?
The PQ3450 is rated for measurement up to 600V AC/DC in CAT III environments. Do not exceed this limit to prevent damage or injury.
How can I perform harmonics analysis?
Use the HARMONICS mode on the device. Select the phase and the harmonic order up to the 50th harmonic. The display will show amplitude and percentage relative to the fundamental.
Can I log data over an extended period?
Yes. Enable the data logging function and set the interval. Data is stored in internal memory or on an SD card. The logging duration depends on the memory capacity and interval chosen.
How do I transfer recorded data to a computer?
Connect the PQ3450 via USB to a PC, or remove the SD card and insert it into a card reader. Use the included software to download, graph, and analyze the data.
How should I calibrate the power quality analyzer?
Calibration should be performed by an accredited laboratory, typically every 12 months or as required by your quality procedures. Internal calibration via software may also be available.
What safety precautions must I observe?
Always use the measuring leads and clamps supplied with the device. Ensure the instrument is rated for the voltage present. For CAT III 600V circuits, use appropriate personal protective equipment.
How do I replace or charge the battery?
To charge, plug the AC adapter into the device. To replace, open the battery compartment on the back and insert a rechargeable battery of the correct type. Always disconnect the device from any measurement before opening.
What is the accuracy for power measurements?
The accuracy varies by parameter. For example, voltage accuracy is typically ±0.5% of reading, and current accuracy depends on the clamp used. Refer to the manual's specification table for details.
How do I clean and store the PQ3450?
Wipe the exterior with a dry, lint-free cloth. Do not use chemical solvents. Store the device in a dry place within the recommended temperature range, preferably with the battery removed for long-term storage.
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USER MANUAL PQ3450 Extech
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Product information
Brand : Extech
Model : PQ3450
Category : Measuring equipment