Application characteristics of single phase watt hour meter

he single-phase watt hour meter calibrator is suitable for the adjustment of single and three-phase watt hour meter production lines, factory inspection and technical supervision, quality inspection of electric energy measurement departments, etc. in the watt hour meter manufacturing enterprises, it can also automatically complete the meter calibration, error data processing, storage, query, certificate and report output and printing, etc. All in all, the single-phase watt hour meter calibrator is an ideal instrument with current output, high power stability, small distortion and high accuracy, which is used to build standards and supervise the verification by the power industry and measurement departments.

 

But there are so many single-phase meters in the market, which one should be chosen? The answer is, of course, zc-621a single-phase watt hour meter calibration station.

 

 

 

Zc-621a single-phase watt hour meter calibration platform is an electronic program-controlled single-phase watt hour meter inspection device developed by Zhizhuo measurement and control company according to the relevant regulations of national grid / South Grid intelligent watt hour meter and the requirements of relevant national standards and regulations. It is a device that integrates a variety of new functions such as double circuit current, charge control test, power carrier communication, etc. it has software and charge control test functions with independent intellectual property rights, and is suitable for the inspection of single-phase intelligent meters of level 0.2 and below.

 

 

The following are the features of zc-621a single-phase watt hour meter calibration bench:

 

1. A variety of structural design, integrated or split structure; special aluminum alloy frame, fireproof composite table, beautiful appearance;

 

2. Crimp type junction box (4 high current terminals and 8 small signal terminals) meeting the standard interface of intelligent meter. Each meter position is equipped with open circuit detection function, and can be equipped with automatic short circuit empty meter position function; it can also be equipped with electric or pneumatic automatic crimping tooling;

 

3. Double current circuit design, each meter position is equipped with two high-quality 100A magnetic holding relays; it can test the error of the automatic primary and secondary circuit of the electric energy meter with anti stealing double circuit measurement; it supports the manual and automatic verification of the single-phase double circuit charge control intelligent electric energy meter of the State Grid; it does not need the secondary connection meter, and realizes the failure of the live line (L) circuit and the zero line (n) circuit through the relay switching mode The two current circuits can be switched by keyboard or automatically by calibration software;

 

4. Digital PWM power source is adopted, which has the characteristics of high output power, high efficiency, low heating and high stability;

 

5. Perfect fault detection, positioning, protection and alarm functions, with voltage short circuit, current open circuit, power amplifier overheating, poor contact and other protection functions;

 

6. 2-21 times of harmonic superposition, the amplitude and phase can be set freely (the harmonic amplitude is within 40% of the fundamental wave, and the phase is 0-360). It can also analyze the output harmonic and draw the waveform, and test the harmonic influence of the watt hour meter;

 

7. Each table bit is equipped with independent pulse input, multi-functional signal input, 485 communication signal interface with high-voltage protection function, and multi-functional display board with 6-digit digital display (displaying basic error, number of pulses in words, meter clock, various status marks, etc.);

 

8. The test scheme can be set flexibly, which can complete all accuracy requirements tests such as basic error, constant check, potential start test, multi rate electric energy, voltage, current, power factor, zero line current indication error, daily timing error, time interval switching error, demand indication error, demand period error, etc;

 

9. It can complete all consistency tests and various influence tests such as error variation, error consistency, load current fluctuation variation, current overload, etc;

 

10. It can carry out voltage influence, frequency influence, harmonic influence and other influence tests on various electric energy meters;

 

 

 

After understanding the characteristics of zc-621a single-phase watt hour meter calibration platform, you can also understand its parameters:

 

Parameter name main index

 

The accuracy level of the device is 0.05 and 0.1.

 

The standard power meter grade of the device is single-phase multi-functional standard power meter, and the accuracy grade is 0.05.

 

Voltage range: 0 ~ 240V (can be set arbitrarily) accuracy: 0.02%

 

Adjustment range: 0-120% adjustment fineness: 0.01% fullness

 

Current range: 0.005a, 0.025a, 0.05A, 0.25A, 0.5A, 1a, 2.5A, 5A, 10a, 20a, 50a, 100A

 

Accuracy: 0.02%

 

Adjustment range: 0-120% adjustment fineness: 0.01%

 

Phase shift range: 0-360 ° position; fineness of adjustment: 0.01 °

 

Output frequency: 45Hz ～ 65Hz adjustment fineness: 0.01Hz

 

Precision of indicating instrument: voltage: ＜ 0.02%; current: ＜ 0.02%

 

Phase: ＜ 0.01 °; power: ＜ 0.05%

 

Distortion degree of output waveform: voltage: ＜ 0.5%; current: ＜ 0.5%

 

Output stability ＜ voltage: ＜ 0.05% / 3 minutes ＜ current: ＜ 0.05% / 3 minutes

 

Power: ＜ 0.05% / 3 minutes

 

The harmonic output is 2-21 times, the harmonic content is less than 40%, and the fundamental wave can be set arbitrarily.

 

Output capacity ＞ current: ＞ 60VA / table position ＞ voltage: ＞ 20VA / table position

 

Load characteristics resistance, sensibility, and capacity (small 4uf)

 

Starting current output 1mA (minimum)

 

Accuracy: ＜ 5%; starting power: accuracy ＜ 5%

 

Syt10 standard clock 3 × 10-7 / S (internal time reference accuracy), output 50KHz; GPS timing instrument (optional)

 

Current wiring mode 1-2; 4-3

 

Accuracy of multi-channel booster class 0.01 rated load of each circuit: 15va

 

Input power supply of the device: 220VAC, ± 10%, 50Hz; maximum power consumption: 2000VA (24 meter bit)

 

 

 

All in all, zc-621a single-phase watt hour meter calibration table is a new instrument with beautiful appearance, exquisite technology, perfect function and excellent performance, which is very worth purchasing. If you don’t understand anything, you can always consult our online customer service~