MCYM-2 Three-Phase Electric Energy Meter Calibration Device
MCYM-2 Three-Phase Electric Energy Meter Calibration Device

MCYM-2 Three-Phase Electric Energy Meter Calibration Device

Model: MCYM-2 Quantity: 1 set Manufacturer: Hubei MECI Electric Power Equipment Co., Ltd

Category: Metrological verification device

Keywords: MCYM-2 Three-Phase Electric Energy Meter Calibration Device

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Product Overview

The MCYM-2 handheld three-phase energy meter field calibration instrument is a compact, lightweight, and easy-to-use metrological verification tool. It enables on-site verification of energy meter errors, inspection of the correctness of metering device wiring, testing of current transformer ratio and polarity, and measurement of power quality parameters (including voltage harmonics, current harmonics, voltage unbalance, and total harmonic distortion). Based on these tests, it can determine whether a customer is engaging in electricity theft, whether metering accuracy meets national standards, whether the customer is causing harmonic pollution to the power grid, and whether the power factor is within acceptable limits, thereby helping to prevent losses in the power system.

The instrument is equipped with a 500 A high-precision clamp-on current transformer, enabling direct measurement and diagnosis of the proper operation of low-voltage electric energy metering devices. It also functions as an electrical inspection tool and a phase volt-ampere meter, making it suitable for use as a standard and verification instrument in departments such as power supply inspection, power supply stations, metering, dispatching, and relay protection. Furthermore, it can integrate the functions of multiple testing instruments, making it an exceptionally cost-effective device.

Product Features

1. Adopts a large-screen, high-dot-matrix color LCD display; supports Chinese character and graphical display with high clarity;

2. Real-time measurement of three-phase voltage, current, active power, reactive power, phase angle, power factor, frequency, primary and secondary currents of low-voltage CTs, transformation ratio, and polarity;

3. Intuitively displays vector diagrams of three-phase voltage and current, and directly provides the wiring verification results for 48 different connection configurations of a three-phase three-wire metering system.

4. The energy meter can be subjected to a running test to detect fraudulent practices such as tampering with the nameplate or dial mechanism to steal electricity.

5. Equipped with a high-precision clamp-on current transformer for convenient and safe sampling; it can measure the comprehensive error of three-phase four-wire and three-phase three-wire metering devices—including wiring errors, energy meter errors, and low-voltage CT errors—without interrupting power supply or altering the metering circuit wiring.

6. It can be used to verify various types of reactive energy meters;

7. Built-in high-capacity data memory capable of storing test data for 2,000 meters, including meter information, voltage, current, phase angle, power, power factor, and vector diagrams; data retention exceeds 100 years even after power loss.

8. Equipped with an RS-232 interface for communication with a computer, enabling data management and report printing.

9. It can detect harmonics from the 2nd to the 32nd and display the content or amplitude of each harmonic; it can also automatically calculate the total harmonic distortion.

10. It can display the real-time waveforms of phase voltages and currents, enabling assessment of the quality of the voltage and current.

11. Supports extended measurement of CT transformation ratio, polarity, ratio error, and phase angle error;

12. Built-in high-performance lithium-ion rechargeable battery, providing over 8 hours of continuous operation.

Technical Specifications

1 Input voltage: AC 50–450 V;

2 Current ranges: 5 A, 500 A (clamp meter); 5 A (built-in current transformer);

3 Frequency range: 45 Hz ~ 65 Hz; Accuracy: ±0.01 Hz;

4. Phase measurement range: 0° to 360°; accuracy: ±0.1°.

5. Accuracy classes for current, voltage, active power, and active energy: 0.05 or 0.1 (with built-in current transformer),

0.3 or 0.5 (clamp-on current transformer);

6 Reactive energy accuracy class: 0.3 (with built-in current transformer);

7 Input impedance: voltage circuit ≥300 kΩ, current circuit ≤0.01 Ω;

8 Output standard electrical energy constant: 10,000 pulses/kWh (5 A),

100 p/kWh (500 A);

9 Operating temperature: -20°C to +50°C;

10. 24-hour drift: ≤0.02%

11. Power Supply: Built-in high-performance lithium-ion rechargeable battery;

12. Total power consumption: less than 3 VA;

13. Dimensions: 250 × 160 × 60 (mm)

14 Weight: 1.8 kg

MCYM-2 Three-Phase Electric Energy Meter Calibration Device

MCYM-2 Three-Phase Electric Energy Meter Calibration Device

Model: MCYM-2 Quantity: 1 set Manufacturer: Hubei MECI Electric Power Equipment Co., Ltd

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