How to Choose an Active Power Transducer?

When purchasing an active power transducer, you should fully consider your application's requirements. Here are a few common factors to consider:

Power Measurement Type

Single-Phase or Three-Phase: Choose based on your power system's power load.

Balanced vs. Unbalanced Load: For unbalanced loads, you may need a sensor with per-phase measurement capabilities.

True RMS or Average Response: For distorted waveforms (e.g., from VFDs, UPSs, inverters), choose a true RMS or DSP-based device.

Electrical Parameters

Voltage Range: Check if the sensor supports standard system voltages (e.g., 120V, 230V, 400V, etc.).

Current Range: Determine whether you will be measuring directly or through a CT (current transformer). Select the input range accordingly (e.g., 0-5A, 0-1A).

Frequency: Ensure compatibility with your system frequency (50Hz, 60Hz, or variable frequency in inverter-driven systems).

CR6210 single phase active power sensor​
single phase active power sensor

Accuracy and Performance

Accuracy: Typically ±0.2% to ±1%, depending on the application. Higher accuracy is required for billing or energy auditing.

Response Time: Dynamic load monitoring may require a fast response (<250 milliseconds).

Power Factor Range: Ensure the ability to handle both leading and lagging power factor conditions.

Isolation and Safety

Galvanic Isolation: The input, output, and power supply must be electrically isolated to ensure safety and noise immunity.

Overload Capacity: Check the maximum allowable input voltage/current overload.

Certifications: Choose an active power transducer that meets safety certification standards, such as CE, UL, or IEC.

OFweek Mall is a professional online wholesale electronic component mall. We offer a wide variety of active power transducers. If you need bulk active power transducers, please visit us. All power transducers here are supplied by original manufacturers, with guaranteed price and quality.

Related Articles

What is an Active Power Transducer?

Why are True RMS Current Transducers so Important?

What Is the Difference Between Standard Peak Current and RMS Current?

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