three phase portable energy Harmonic analysis calibrate tester with 100A clamp
Harmonic analysis
Function description
1. Perform the 2nd ~ 51st harmonic analysis on the measured signal, and test the total harmonic
distortion rate, the content of odd and even and each harmonic.
Press "3 harmonic" key, and the interface displays as follows:
Press [←→] key to turn pages. Press [F4] to sort.
Press [F1] key to measure A phase voltage and current harmonics.Three-phase energy meter field calibrator
--- User Manual ---
--- --- 36
Press [F2] key to measure B phase voltage and current harmonics.
Press [F3] key to measure C phase voltage and current harmonics.
Press [F5] to switch to digital mode.
The instrument can measure 2nd ~ 52nd harmonics, show harmonic spectrums and give out
the percentage content of each harmonic.
Explanation to name:
The content of nth harmonic voltage is expressed as HRUn.
Total harmonic distortion of voltage harmonic (THDu) and total harmonic distortion of current
harmonic (THDi) are defined as, respectively
THDu=(UH/U1)×100%
THDi=(In/I1)×100%
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.
Harmonic influence
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 accidentsThree-phase energy meter field calibrator
--- User Manual ---
--- --- 37
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. Leading to the metering and measuring instruments (such as: energy meter) not to give correct
instructions or measurement;
5. Interfering with the communication system, lowering down the quality of signal transmission,
disturbing the normal transmission signal, and even damaging the communications equipment.
3.7 Time Settings
1. Press [7] to enter into the time settings interface;
2. Input time, and press [Enter] and the settings take effect.
3.8 Data Query
Query means to inquire the calibration records, line inspection results, and fundamentalThree-phase energy meter field calibrator
--- User Manual ---
--- --- 38
frequency error data stored in the instrument.
Operating steps:
1. Press [Query] to enter into the calibration data query interface as shown in the figure below:
Store the data by date, and the meter calibration data within the same date are stored in a
folder named for the date.
2. Press [Enter] key to view the calibration record on the date.
3. Press [Enter] to view the data details.
Note: if the calibration task you want to find can't be found on the current interface,Three-phase energy meter field calibrator
--- User Manual ---
--- --- 39
search by turning pages through [← →] key.
Press [F5] to delete the data of the current date.
3.9 Communication
| General |
| Power supply |
AC57~450V, 50~60Hz |
| Power consumption |
About 10VA |
| Ambient temperature |
-20ºC--+40ºC (accuracyassured) |
| Relative humidity (not condensing) |
40%-95% |
| Dimension(L×W×H, mm) |
249×154×58 |
| Weight |
1.8Kg |
| Warm-up time |
< 3 minutes |
| Battery endurance |
4 hours |
| LCD color display |
5.7", 320×240 TFT |
| Communication port |
RS 232 |
| Safety |
| Declaration of conformity |
CE conformed |
| Operation reference |
| Measuring ranges |
| Voltage |
AC 30~480V |
Current:
|
Direct connection-1A, 5A
Via clamp-on CT's: 5A, 20A(±0.2%, self adjusted), 100A, 500A, 1000A(±0.5%) |
| Frequency |
45~65Hz |
| Phase |
-180 º ~+180º |
| Constant of pulse |
5A: FL=3.6×104P/KWh FH=3.6×107P/KWh Others: FL=36000×5/rated current (P/KWh)
FH=3.6×107×5/ rated current (P/KWh) |
| Harmonic measurement |
Range: 2nd ~51st
Accuracy: ±0.01% (compared to 100% fundamental wave) |
| Transformation ratio deviation |
< ±0.5% |
| Voltage deviation |
< ±0.01% |
| Frequency deviation |
< ±0.01%(45-55Hz) |
| Influence of temperature |
< ±5ppm/ ºC(typical) |
| Variation in 24hrs. |
<±0.02% (class 0.1) |
<±0.01% (class 0.05) |
| Intrinsic error |
| Current input ( via Clamp-on CT's) |
5A (self adjusted), 20A: ±0.2%
100A, 500A, 1000A, 1500A: ±0.5% |
| Direct connection |
| |
Accuracy class: 0.1 |
Accuracy class: 0.05 |
| Active energy |
±0.1% |
±0.05% |
| Reactive energy |
±0.1% |
±0.1% |
| Active power |
±0.1% |
±0.05% |
| voltage |
±0.1% |
±0.05% |
| current |
±0.1% |
±0.05% |
| Frequency |
±0.05Hz |
±0.05Hz |
| Phase |
±0.1º |
±0.05º |
Audited Supplier 
){kind=link}
){kind=link}