Single Phase Power Quality Hamonic Analyzer Calibrator

Product Description

 

Harmonic analysis

Function description

1. Perform the 2nd ~ 51st harmonic analysis on the measured signal, and test the total harmonic distortion rate,

odd and even times and each harmonic content.(note: test the 2nd ~ 21st harmonics according to the national

standard)

2. Test and analyze three-phase voltage and current, respectively, show the harmonic content of each harmonic in

the form of corresponding light bar chart, and display the percentage of corresponding harmonic content

accordingly.

 

Press "3 harmonic" key to enter the "harmonic" state, and after entering the interface, the interface below displays

15PEC-HA Single-phase energy meter field calibrator -- User manual

voltage, current and sorting three options; select voltage and press "F2" key, choose current and press "F3", select

sorting and press "F5", show the each harmonic content of current or voltage according to the operation, and the

biggest harmonic on the scale line is full scale. If the harmonic is very small, only parts per ten thousand, such as

maximum 0.06%, the percentage value of the highest scale is 0.06%, and the subtle harmonic is amplified, clear at

a glance.

 

The instrument can test a total of 2nd ~ 51st harmonics, and show harmonic spectrum and give out the percentage

content of each harmonic. The 21st harmonic is used as an example in the following to calculate (the 51st harmonic

is calculated the same as the 21st harmonic)

Wherein:

Percentage content of each harmonic - refers to the percentage of the effective value of the 2nd ~ 21st harmonic

relative to the effective value of fundamental wave, defined as follows:

(of which i = 2, 3, 4 · · · · · · 21; Ui is the effective value of each harmonic, and U1 is the effective

value of fundamental wave.);

Harmonic order - refers to the multiples of fundamental wave frequency, relative to fundamental wave. If the

frequency of mains supply is 50Hz, the 2nd harmonic is 100Hz AC component, the 3rd harmonic is 150Hz AC

component and so on.

 

Channel indicator -- the harmonic state of the channel currently tested.(six channels are

respectively:);

16PEC-HA Single-phase energy meter field calibrator -- User manual

Odd order harmonic distortion rate - refers to the percentage of the total effective value of odd harmonics relative

to the effective value of fundamental wave, defined as follows:

In case of

Then, odd aberration rate

Even order distortion rate - refers to the percentage of the total effective value of even harmonics relative to the

effective value of fundamental wave, defined as follows:

In case of

Then, the even order distortion rate

Then, the total harmonic distortion

Total harmonic distortion--refers to the percentage of the total effective value of harmonics relative to the

effective value of fundamental wave, defined as follows:

In case of

Then, the total harmonic distortion

17PEC-HA Single-phase energy meter field calibrator -- User manual

 

The scale line - the biggest harmonic is full.

Harmonic pollution to power grid is becoming more and more serious, so the harm caused by harmonics can not

be ignored, mainly reflected in:

1. Greatly increasing the chance of resonance in power grid, thus causing the risk of accidents arisen from very

high overcurrent or overvoltage;

2. Increasing additional loss, and reducing the efficiency of power generation, transmission and power equipment

and the equipment utilization;

3. Increasing the losses to electrical equipment (rotary motors, capacitors, transformers, etc.), accelerating the

insulation aging, and thus shortening the service life;

4. Enabling the relay protection and automatic device, computer systems, and a lot of electrical equipment to run

abnormally;

5. Leading to the metering and measuring instruments (such as: energy meter) not to give correct instructions or

measurement;

6. Interfering with the communication system, lowering down the quality of signal transmission, disturbing the

normal transmission signal, and even damaging the communications equipment.

General
Power supply	AC 87~265V, 50~60Hz
Power consumption	About 10VA
Ambient temperature	-20ºC--+40ºC (accuracyassured)
Relative humidity (not condensing)	40%-90%
Dimension(D×W×H, mm)	249×154×58
Weight	1.5Kg
Warm-up time	< 3 minutes
Battery endurance	4hours
LCD color display	5.7", 320×240 TFT
Communication port	RS 232
Data storage	8 mega bite
Safety
Declaration of conformity	CE conformed
Operation reference
Measuring range	AC 30~265V
Intrinsic errors
	via clamp-on CT's	via terminals
Voltage	0.1%	0.1%
Current	0.3% (0.1A~1000A) Long term accuracy assured (1A~40A)	0.1% (0.1A~10A)
Power	0.3% Long term accuracy assured (1A~40A)	0.1%
Active power	0.3% Long term accuracy assured (1A~40A) 0.1%	0.1%
Reactive power	0.5%	0.3%
Harmonic	2^nd ~51^st	0.1%
Integrated virtual load	Output current: 10A, power: 20VA
Others
Internal virtual load	Output current: 20A, power: 20VA
Constant of pulse	FL=3.6×10^4P/KWh FH=3.6×10^8P/KWh