An overview,

Three-phase multifunctional electric energy meter field calibrator is a high-precision testing instrument developed by our company, which integrates the measurement of electric parameters, electric energy meter calibration and wiring judgment. The instrument is equipped with voltage transformer and current transformer with high precision and high linearity, so that the instrument can measure all kinds of parameters with high accuracy. At the same time, it is equipped with clamp current transformer, which makes the field wiring simple and can be directly connected without disconnecting the current loop.

Two, technical indicators

1. Input characteristics

Voltage measuring range: 0~400V, 57.7V, 100V, 220V, 400V four automatic switching range.

Current measurement range: 0~5A, built-in transformer is divided into 5A(CT) file. The tongs are 5A (small tongs), 25A (small tongs), 100A (medium tongs), 500A (medium tongs), 400A (large tongs) and 2000A (large tongs). (Medium and large clamp meter are optional)

Phase Angle measurement range: 0~359.999°.

Frequency measurement range: 45~55Hz.

2. Accuracy

Measurement and verification part:

Voltage :(±0.1%)

Current :(±0.1%) (clamp transformer ±0.5%)

Active power :(±0.1%) (clamp transformer ±0.5%)

Reactive power :(±0.5%) (clamp transformer ±1.0%)

Active electric energy :(±0.1%) (clamp transformer ±0.5%)

Reactive electric energy :(±0.5%) (clamp transformer ±1.0%)

Frequency :(±0.1%)

Phase: + / - 0.2 °

3. Power quality

Fundamental voltage and current amplitude: fundamental voltage allowable error ≤ 0.5% F.S. Fundamental current allowable error ≤ 1% F.S.

Measurement error of phase difference between fundamental wave voltage and current: ≤0.5°

Measurement error of harmonic voltage content: ≤ 0.1%

Measurement error of harmonic current content: ≤ 0.2%

Three-phase voltage unbalance error: ≤ 0.2%

4. Working temperature

Operating temperature: -10℃~+40℃

5, insulation

(1) The insulation resistance of voltage and current input terminal to the casing is more than 100M ω.

(2) The input end of the working power supply is subjected to power frequency 1.5kV (effective value) between the shell, and the experiment lasts for 1 minute.

6. Standard electric energy pulse constant

Standard power pulse constant: built-in transformer constant (FL) =10000 r/kW·h,

Tongs transformer constant (FL) :

5A

25A

100A

500A

400A

2000A

10000 r/KW · h

2000 r/KW · h

500 r/KW · h

100 r/KW · h

125 r/KW · h

25 r/KW · h

7, weight,

Weight: 2 kg

8, volume

Size: 25 cm * 16 cm * 6 cm

The device name in large font is given at the top: YWDCY-3 three-phase electricity meter field calibrator

With main drawing (plus 3 clamp tables) :

On-site calibration of electricity meter

Electricity check

Electrical parameter test

Vector analysis

Harmonic test

CT ratio test

Portable oscillograph

Zy-y014a handheld three-phase electric energy meter on-site calibrator is a small volume, light weight, simple and practical measurement calibration tool. It can verify the error of electricity meter, check whether the wiring of metering device is correct, detect the change ratio and ji property of current transformer used for metering, measure the power quality of users (including voltage harmonics, current harmonics, voltage balance, total harmonic distortion, etc.); Through the test, we can judge whether the user has the behavior of stealing electricity, whether the measurement accuracy meets the requirements of the national standard, whether the user causes harmonic pollution to the quality of the power grid, whether the power factor is up to standard, and avoid the loss of the power system.

Instrument equipped with 500 a clamp type transformer has high precision, can be measured directly measure and diagnosis of low voltage electric energy metering device is normal, and electricity supervision and phase volt-ampere table function, can be in electricity inspection, power substation, metering, scheduling, the insurance and other departments as standard and inspection tool use, and can realize the function of a variety of test equipment; Is a cost-effective equipment.