Multifunction Portable DDS 3 Phase Testing Equipment

1. Built-in digital multi-function standard meter with Integrated structure of meter and power source, electrical parameters can be read via software

2. adopts DDS technology, CPLD and 32 bit embedded system, featured with high stability of signal source output, small fineness, low distortion

3. RAM system large color LCD display, can show three phase voltage/current, active power, reactive power, apparent power and electric quantity vector diagram, waveform analysis chart.

4. use digital power amplifier with above 90% efficiency and 300KHz carrier frequency, having advantages of low distortion, little heating, high efficiency

5. Perfect protection function: voltage short circuit alarm, open circuit and over load alarm

6. Built-in OCXO for 50KHz high precision impulse output, which can be used to calibrate energy meter clock, also can test day error/hour segment error when matching with meter calibration software (optional)

7. With 485 communication interface, can do universal meter various communications test (optional)

8. can work without PC to auto calibrate energy meter by built-in software, storage capacity up to 1,000 calibrated meters' data

9. With USB interface, can upgrade, output data, connect mouse for direct operation

 

 

1. Instrument accuracy level: 0.05 or 0.1

2. PC connection terminal: RS232 communication interface

3. Three phase source parameters

1) output voltage:

       3*57.7V Y 3*100V

        3*220V Y 3*380V 

Regulation range: 0～120% continuously adjustable, fineness:better than 0.01%

 

2) Output current

Range: 25mA,0.1A,1A,5A,25A,100A

Minimum output current: 1mA ( accuracy ＜5%)

3) Output power: voltage circuit 3×50VA  

voltage circuit 3×150VA  

4). Stability of output voltage current power : ≤0.02%/120S

5). Output voltage current waveform distortion: ≤ 0.5%

6). Three phase degree of symmetry: better than 120o±0.3o  

7). Frequency range: 45Hz～65Hz regulation fineness: 0.1Hz

8). Phase range: -180.0° ～180.0°regulation fineness: 0.1°

9). Indicating instrument accuracy level:

voltmeter,ammeter ±0.01%

Phase meter accuracy ±0.01°

Frequency meter accuracy: ±0.01Hz

4. Built-in three phase standard meter parameters:

1) Input voltage

scope: 40-480V

Input voltage range: 60,120,240,480

overload capacity: 600V

input load ≤0.5mA(480V)

2) Input current

Scope: 0.01 - 100A

Range: 100,50,25,10,5,2.5,1,0.5,0.25,0.1,0.05,0.025A

Overload capacity: 150A

3) Accuracy:

Level: 0.05 (0.1A~120A)

Power measuring accuracy:

Active power measuring accuracy: 0.05%/0.1%(PF≥0.5)

Reactive power measuring accuracy: 0.1%/0.2%(PF≥0.5)

4) electric energy measuring accuracy

Active power measuring accuracy: 0.05%/0.1%(PF≥0.5)

Reactive power measuring accuracy: 0.1%/0.2%(PF≥0.5)

5. protection function:

voltage short circuit, current open circuit, over-load, display over-voltage protection

6. can do 2~21th order harmonic test, voltage interruption and drop test, harmonic amplitude adjustable

7. power supply: 230V±10%～50Hz

8. Maximum power consumption: 300VA

9. Working environment: temperature 20℃±5℃ relative humidity≤85%