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China Power Meter Suppliers - Accurate Measurement of Active and Reactive Power from a Reliable Factory

This series of power meters is specifically designed for precision measurement of active power (the real power consumed or supplied by various loads) and reactive power (the power that is stored and released by inductive or capacitive components) in three essential electrical system configurations. As a leading factory in China, we are proud to offer these advanced power meters, making them an ideal choice for suppliers seeking reliable solutions for their energy management needs
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    Product Details

    Product Overview

    Expanded Technical Specification: Power Meters for Active and Reactive Power This series of power meters is engineered to accurately measure active power (real power consumed or supplied by a load) and reactive power (power stored and released by inductive/capacitive components) across three core electrical system configurations, as detailed below:

    1.1 Single-Phase (1P)
    Power Meter

    • Compatibility: Single-phase AC systems (residential, light commercial, small-scale industrial).
    • Rated Voltage: 100 V, 220 V
    • Rated Current: External CTs (secondary ratings of 1 A or 5 A)
    CT Configuration Note: The primary current rating (X) is dictated by the ratio of the paired CT (e.g., 50 A/5 A, 100 A/5 A, 200 A/1 A). This flexible CT-matching design allows the meter to accommodate a broad range of primary current measurements, tailored to specific system load requirements.

    1.2 Three-Phase Three-Wire (3P3W) Power Meter

    • Compatibility: Three-phase three-wire AC systems (high-power industrial machinery, utility lines, balanced loads without neutral).
    • Rated Voltage: 100 V, 220 V, 380 V, 440 V
    • Rated Current: External CTs (secondary ratings of 1 A or 5 A)
    CT Configuration Note: The primary current capacity (X) is determined by the CT ratio selected for the application, ensuring compatibility with low to high primary current ranges (e.g., 100 A, 500 A, 1000 A) for diverse industrial load monitoring needs.

    1.3 Three-Phase Four-Wire (3P4W) Power Meter

    • Compatibility: Three-phase four-wire AC systems (commercial buildings, data centers, unbalanced loads requiring neutral).
    • Rated Voltage: 100 V, 220 V, 380 V, 440 V
    • Rated Current: External CTs (secondary ratings of 1 A or 5 A)
    CT Configuration Note: Similar to the 3P3W variant, the primary current range (X) is defined by the CT ratio, enabling precise measurement of active and reactive power for both balanced and unbalanced three-phase loads.

    Frequently Asked Questions (FAQ)

    What is the difference between active and reactive power?

    Active power (real power) is the actual electrical energy consumed or supplied by a load to perform work. Reactive power is the power temporarily stored and returned by inductive or capacitive components in the system, maintaining the alternating current voltage levels.

    Where should a Single-Phase (1P) power meter be used?

    Single-Phase (1P) power meters are ideal for single-phase AC systems typical of residential homes, light commercial buildings, and small-scale industrial applications with lower power requirements.

    What is the difference between 3P3W and 3P4W configurations?

    Three-Phase Three-Wire (3P3W) is optimized for balanced loads where a neutral conductor is not needed, such as heavy industrial machinery. Three-Phase Four-Wire (3P4W) includes a neutral line to handle unbalanced loads, commonly used in commercial facilities and data centers.

    What input voltage ratings do these meters support?

    The Single-Phase (1P) meter supports 100 V and 220 V inputs. The Three-Phase (3P3W and 3P4W) meters support a wider range of voltage inputs: 100 V, 220 V, 380 V, and 440 V.

    How does the Current Transformer (CT) ratio affect the measurement range?

    The meters use external CTs with standard secondary outputs of 1 A or 5 A. The primary current rating (X) is determined by the selected CT ratio (e.g., 50A/5A or 1000A/5A), allowing the meter to scale its measurements to match the specific current demands of your system.