MC-0301D Voltage Monitor Calibration Device

MC-0301D Voltage Monitor Calibration Device

Category: Metrological verification device

Keywords: MC-0301D Voltage Monitor Calibration Device

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Product Overview

The MC-0301D device is an integrated meter-source unit designed in accordance with the accuracy test requirements specified in the State Grid Corporation of China enterprise standard Q/GDW 1817-2012, “Verification Specifications for Voltage Monitors.” The core technology of the meter section is a 0.05-class power-frequency AC data acquisition system composed of a digital signal processor (DSP) and a 16-bit high-speed analog-to-digital converter, while the source section employs a DSP and a 16-bit digital-to-analog converter to generate sinusoidal signals or distortion waveforms with programmable characteristics. The device also incorporates a component with an accuracy of 1×10 -6 a standard timer. The device can be used to determine the combined measurement error of statistical and recording-type monitoring instruments, as well as the total voltage monitoring time, the duration of voltage excursions above the upper limit, the duration of voltage excursions below the lower limit, sensitivity tests, power supply voltage and frequency tests (under normal operating environmental conditions), harmonic influence tests, and more. When the monitoring instrument’s own power consumption is ≤3 VA, each voltage output channel has the capability to simultaneously drive a load of 10 voltage monitoring instruments (provided that the instruments share the same rated operating supply voltage, or are externally powered with the same rated monitoring voltage). During precision testing of the monitoring instruments, the voltage ramp-up and ramp-down process can be controlled by a program. The device can output distorted waveforms containing harmonics from the 2nd to the 32nd order, with the harmonic order, amplitude, and phase relationship between harmonics and the fundamental wave all being programmably adjustable. This device can also perform online measurements of AC voltage, harmonic content in the voltage (up to the 32nd harmonic), and voltage distortion, among other parameters.

Product Features

1 It can be used to determine the basic error, comprehensive measurement error, total voltage monitoring time, and voltage over-

Upper-limit time, voltage under-limit time, sensitivity testing, harmonic influence testing, and so on.
2. It can measure AC voltage, harmonic content in the voltage, and voltage distortion online.
3. The programmable source can generate distorted waveforms containing 2 to 32 harmonics, with the number of harmonics, their order, amplitude, and phase relative to the fundamental all being programmable.
4. The voltage power amplifier serves as a constant-voltage source. Due to its lightweight design, this device is more suitable for on-site calibration and verification.
5. Equipped with an RS-232 interface or a USB interface and large-capacity non-volatile memory, capable of storing test data for 248 meters under inspection, via the upper

The host computer software, controlled by a PC, enables automatic or manual testing of this device and facilitates the processing and management of test results.

Technical Specifications

Power-frequency AC voltage output

  • Measurement ranges: 57.7 V, 100 V, 220 V, 380 V
  • Adjustment range: 0–130%
  • Adjust the fineness to 0.01%.
  • Distortion (when outputting a sine wave) is no greater than 0.3%.
  • Frequency (fundamental) range: 45–65 Hz; adjustment resolution: 0.001 Hz
  • Output capacity is 30 VA.
  • When generating distorted waves, the harmonic order ranges from the 2nd to the 32nd, with amplitudes between 0% and 30%, and the phase angle of each harmonic relative to the fundamental wave ranges from 0° to 360°.

Power-frequency AC voltage measurement

  • Measurement ranges: 57.7 V, 100 V, 220 V, and 380 V; automatic range switching.
  • The accuracy is 0.05%.
  • Harmonic and distortion measurement functions: harmonic order up to 32, with a harmonic error of ±(10% of the reading + 0.1%), where “RD” denotes the harmonic content reading; distortion error of ±(10% of the reading + 0.1%), where “RD” denotes the distortion reading.

Time interval accuracy

0.1 seconds per 24 hours.

Power supply

Single-phase 220 V ±10%, 50 Hz ±5%.

Operating Environment

Temperature: 20°C ± 10°C; relative humidity: not more than 85% RH.

Volumetric weight

The external dimensions are 345 × 340 × 142 mm, and the weight is approximately 8 kg.

MC-0301D Voltage Monitor Calibration Device

MC-0301D Voltage Monitor Calibration Device

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