DFC-203A is a three phase portable reference meter, which is used to check many kinds of electricity meter.

I. Introduction

DFC-203A is a three phase portable reference meter, which is used to check many kinds of electricity meter. With small size, light weight, strong function, it is the best tool to check meter on-site.

DFC-203A use Analog to Digital Conversion (ADC) be the fundamental principle, sample the voltage and current. Digital signal processing unit control the sample and analysis the data in real time. It uses high-precision sampling technique and advanced signal processing technology, so the system accuracy is better than 0.05% in wide voltage and current range.

II. Features

1. Function: Measure Voltage, Current, Vector, Waveform Distortion, Harmonic, Active Power, Reactive Power, Apparent Power, Phase, Power Factor, Frequency, Energy Error.

2. Power measurement: 

DFC-203A can measure the power below:

(1) Three-phase four-wire active power

(2) Three-phase three-wire active power

(3) Three-phase four-wire true reactive power

(4) Three-phase three-wire true reactive power

(5) 90°-balancing, reactive energy, triple-system

(6) 60°-balancing, reactive energy, cross-connected system

(7) Three-phase four-wire apparent power

(8) Three-phase three-wire apparent power

3. Wide range: Voltage 60V-480V, Current 1A,10A, Auto switching range/Manual switching range.

4. Four quadrant three-phase simultaneous measurements for active, reactive, and apparent energy and power.

5. Receive high/low pulse from electric meter to compute error.

6. High/low standard electric pulse output.

7. Voltage and current harmonic analysis: 2-21th harmonic content.

8. Complete software calibration, to eliminate the drawback of hardware calibration.

9. Built-in lithium battery, auxiliary power supply can be AC or battery. In outdoor use, it can be supplied with the electric wire. 

III. Specifications

Note: In these specifications,”RD” is short for “read”,”RG” is short for “range”.

1. Voltage Measurement 

Range: 60V,120V,240V,480V, Auto/Manual range switch;

Accuracy: 0.05%RD when voltage in 30V~480V;

         0.05%RG when voltage in 0~480V

2. Current Measurement

Direct input: 1A,10A; Manual switching range; Measuring range:(0) ~120%)×range;

Accuracy: 0.05%RD  0.01A~10A;  0.05%RG  0~10A;

Clamp input: 5A~1000A; Manual switching range; Measuring range:(0) ~120%)×range;

Accuracy: 0.1%RD  0.05A~1000A; 0.1%RG  0~1000A

3. Power/Electric Energy Measurement

Current direct input,active power/energy accuracy:

0.05%RD  30V~480V  0.01A~10Acosφ≥0.5;

Reactive power/energy accuracy:

0.1%RD   30V~480V  0.01A~10Asinφ≥0.5;

Apparent power accuracy:

0.05%RD30V~480V  0.01A~10A;

Clamp input, active power/energy accuracy:

0.1%RD   30V~480V  cosφ≥0.5;

Reactive power/energy accuracy:

0.5%RD   30V~480V  sinφ≥0.5;

Apparent power accuracy:0.1%RD 30V~480V  

4. Power Factor Measurement

Measurement range: -1.0000~0~1.0000;

Resolution: 0.0001;

Accuracy: 0.0005(current direct input), 0.002(current clamp input)

5. Phase Measurement

Measurement range: 0.000°~359.999°

Resolution: 0.001°

Accuracy: 0.02° (current direct input), 0.1° (current clamp input)

6. Frequency Measurement

Measurement range: 45.000Hz~65.000Hz

Resolution: 0.001Hz

Accuracy: 0.01Hz

7. Standard Pulse Output

High frequency pulse: FH=150kHz;

Low frequency pulse: FL=FH/50000=3Hz;

8. Electric Energy Pulse Input

Low level 0.8V max, High level 2-24V

Input highest frequency: > 100kHz

( function(){ var aBigImageSrc = [ 'http://i01.i.aliimg.com/photo/v1/703788621_1/DFC_203A_on_site_Calibrator.jpg' , 'http://i01.i.aliimg.com/photo/v1/703788621_2/DFC_203A_on_site_Calibrator.jpg' , 'http://i01.i.aliimg.com/photo/v1/703788621_3/DFC_203A_on_site_Calibrator.jpg' , 'http://i01.i.aliimg.com/photo/v1/703788621_4/DFC_203A_on_site_Calibrator.jpg' , 'http://i01.i.aliimg.com/photo/v1/703788621_5/DFC_203A_on_site_Calibrator.jpg' , 'http://i01.i.aliimg.com/photo/v1/703788621_6/DFC_203A_on_site_Calibrator.jpg' ]; var oProductShow = new AE.run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); DFC-203A on-site Calibrator