Multimeter 2000 Counts Digital Multimeter with DC AC Voltmeter and Ohm Volt Amp Tester; SEE MORE >>>
[Energy meter detector] Electric energy meter field calibrator parameters Electric energy meter field calibrator characteristics
On-site calibrator of electric energy meter
The electric energy meter on-site calibrator is a test instrument integrating electric parameter measurement, electric energy meter calibration and wiring judgment. The instrument is equipped with high-precision, high-linearity voltage transformers and current transformers, so that the instrument can measure various parameters with high accuracy. At the same time, it is equipped with clamp-type current transformers, which makes the field wiring simple and does not need to disconnect the current loop. can be accessed directly.
Characteristics of the electric energy meter field calibrator
1. The instrument is for electric energy meter calibration, electrical parameter testing and detection of waveform distortion, voltage fluctuation and flicker and three A high-precision test instrument that integrates power quality problems such as phase unbalance.
2. Under the condition of no power failure, no change of the metering circuit, and no opening of the metering equipment, online actual load detection of the comprehensive error of the metering equipment.
3. Accurately measure voltage, current, active power, reactive power, phase angle, power factor, frequency and other electrical parameters, so as to calculate the measurement error of the test equipment loop.
4. The vector diagram of the measured voltage and current can be displayed, and the user can obtain the correctness of the wiring of the metering equipment by analyzing the vector diagram. At the same time, when the three-phase three-wire wiring mode is used, 48 wiring modes can be automatically determined.
5. The current loop can be measured with a clamp transformer, and the operator can measure conveniently and safely without disconnecting the current loop.
6. It can verify voltmeter, ammeter, power meter, phase meter and other indicating instruments, as well as three-phase three-wire, three-phase four-wire, single-phase 1A, 5A various active and reactive energy meters .
7. The electric energy meter can be calibrated by photoelectric, manual, pulse and other methods.
8. Measure and analyze the AC power quality supplied by the public power grid to the user end, and its measurement and analysis: frequency deviation, voltage deviation, voltage fluctuation, flicker, three-phase voltage allowable unbalance and power grid harmonics.
9. It can display single-phase voltage and current waveforms and simultaneously display three-phase voltage and current waveforms.
10. Load fluctuation monitoring: measure and analyze the fluctuations of various electrical equipment on the power quality of the public grid caused by different operating states. Record and store voltage, current, active power, reactive power, apparent power, frequency, phase and other power parameters.
11. Dynamic monitoring of power equipment adjustment and operation process to help users solve problems in the process of power equipment adjustment and commissioning.
12. Test and analyze the dynamic parameters of reactive power compensation and filtering devices in the power system and make quantitative evaluations of their functions and technical indicators.
13. With perpetual calendar, clock function, real-time display date and time. The test data and results can be saved at the same time of on-site verification, and uploaded to the computer through the serial port, and the data computerized management can be realized through the background management software (optional accessory).
14. The large-screen imported color liquid crystal is used as the display. The Chinese operation interface is equipped with Chinese character prompt information and multi-parameter display liquid crystal display interface. The man-machine dialogue interface is friendly, small size, light weight, easy to carry, It can be used for field measurement and standard measurement equipment in laboratory.
Also known as: electric energy meter calibrator, electric energy meter field calibrator, three-phase electric energy meter field calibrator, electric energy performance calibration instrument.
Parameters
1. Input Characteristics
Voltage measurement range: 0~400V, 50V, 100V, 200V, 400V four gears.
Current measurement range: 0~5A, the built-in transformer is divided into 5A (CT) files. The clamp transformer has four gears: 5A(Q), 25A(Q), 100A(Q) and 500A(Q).
Phase angle measurement range: 0~359.9°. Frequency measurement range: 45~55Hz.
2. Accuracy
Measurement and calibration part:
Voltage, frequency: ±0.05% (±0.1%);
Current, power: ±0.05% (±0.1%) (clamp transformer ±0.5%);
Electric energy: ±0.05% (±0.1%) (clamp transformer device ±0.5%);
Phase: ±0.1°.
3. Power quality
Fundamental wave voltage and current amplitude: Fundamental wave voltage allowable error≤0.5%FS; Fundamental wave current allowable error≤1 %FS;
Measurement error of phase difference between fundamental voltage and current: ≤0.5°;
Measurement error of harmonic voltage content rate: ≤0.1%;
Measurement error of harmonic current content rate: ≤0.2%.
4. Working temperature: -10℃~+40℃.
5. Insulation
(1) The insulation resistance of the voltage and current input terminals to the chassis is greater than or equal to 100MΩ.
(2) The power frequency is 1.5KV (effective value) between the input end of the working power supply and the casing, and the experiment lasted for 1 minute.
6. Standard power pulse constant: Built-in transformer constant (FL)=10000r/kW·h, clamp transformer constant (FL):
