Ⅰ.spare parts

1.1 List of parts（50Aclamp meter）

Ⅱ. Introduction to single-phase energy meter multi-function calibrator 

2.1 Main functions

● Single phase field calibration 

The single-phase energy meter calibrator is a set of 0.1-magnitude high precision field calibration instrument, but it is qualitatively different from the single-phase field calibration made of energy meter chip. Where there is no load on the spot, its current output can be used as a virtual load, which is greatly convenient for field testing of single-phase energy meter.

● Storage and query

HZ-1521  can store at least 6000 calibration records, which can be searched according to different ways and support for fuzzy queries, and you can inquire the calibration record data stored in the instrument.

● Calibration plan

Before work, users can make task plans on the HZ-1521 , which is beneficial to orderly working. Calibration plan can be downloaded via PEC management software through serial port into the instrument.

● Input: the instrument supports for Chinese characters, English case and Arabic number input.

● Harmonic measurement: shows the content of 2^nd ~ 51^st harmonics in the form of histogram.

● Counter: check the accuracy of meter counter.

● U disk: upload and download data by connecting U disk

● Timing: calibrate the instrument time

● Waveform display: shows U and I waveforms directly.

● User functionality: view the uploaded user information and do corresponding tests.

2.2 Main characteristics

l With the basic functions of portable calibration device; its own simulated load is used for calibration of energy meter at the scene without load, and the accuracy is up to 0.1%;

l It can measure the voltage and current of 2^nd ~ 51st harmonics, and all of the harmonic data can be stored;

l Settings, errors, electrical parameters and voltage and current waveforms are displayed on one screen;

l All measurement data of at least 6000 meters can be stored, including working parameters, convenient for future analysis;

l Support for U disk, and calibration data can be downloaded by U disk and serial port upgrade software;

l It can communicate with PC, and it is very convenient to connect with the original database and management system. It can match the PEC energy meter management system software to realize paperless office;

l With high brightness, high resolution, and high-resolution 4.4-inch (320 * 240) TFT color LCD display;

l Chinese characters, English case and Arabic numbers can be input;

l A wide range of operating power supply AC 90 ~ 265V;

l The system adopts a high speed and high precision digital multiplier, and all parameters can be corrected by software;

l The instrument has no potentiometer, and can completely prevent the instrument’s error change due to external causes such as transportation, thus greatly improving the stability and reliability of the system;

l A domestic pioneering digital true reactive power measurement technology is adopted for the system;

l The accuracy of electric energy is ensured within the temperature range of - 20℃ ~ + 40℃;

l With 0.3- magnitude 50A clamp optional (including opening and closing non-repeatability error, contact error, interference error of outside magnetic field and angle error, etc.).

l With 50A, 100A, 500A and 1000A clamps optional, used for direct measurement and low voltage measurement of comprehensive errors;

l Automatic voltage shift 30 ~ 265V, and 1-10A direct current input;

l With high precision plastic mold chassis design, lightweight and beautiful;

2.3 Operating and using points for attention

Warning: as this instrument belongs to electric working equipment, for the sake of your safety, please abide by the national regulations on production safety, and operate strictly according to the field calibration procedures of electric power metering devices.

l Connect the power supply properly (Note: the power supply range is AC90V ~ 265V);

l Please read this manual before operating to set the measuring parameters correctly;

l Don't clip the pulse line clip to the energy meter’s voltage terminal;

l Don't insert the voltage terminal onto the current terminal;

l Don't insert the current terminal onto the voltage terminal;

l Choose the current range correctly, and the current range generally does not exceed 220% of the rating;

l Each clamp meter has positive and negative ends: "+" is the current input and "-" is the current output;

l The clamp meters of different instruments are not used interchangeably, or else it will affect the accuracy of measurement;

l The instrument belongs to a precision meter, so please handle with care.

l The jaw of the clamp meter should be kept clean, because oil dirt and scale may affect the measuring accuracy;

l Using corrosive organic solvents to wipe the instrument is strictly prohibited;