Product Details

Overview

This instrument is an integrated 3 phase 0.05 grade device designed according to JJG124-2005 Verification Regulation of Ammeters , Voltmeters , Wattmeters and Ohmmeters and JJG126-95 Verification Regulation of Measuring Transducer for Converting AC Electrical Quantities into DC Electrical Quantities .

The core technique of meter embedded in this instrument is a high precision industrial frequency AC collector combined by digital signal processor (DSP) and 16 digits high speed A/D converter.

The signal part of the source is also the controllable sine wave and harmonic wave signal source combined by DSP and 16 digits high speed D/A converter.

Using a 6.5 inch TFT color LCD screen, character display clear chart. Device has the advantages of high precision , stable and reliable work, convenient operation and flexible features such as.

Main Technique specification

AC output :

voltage output range	50V – 800V	Current output range	0.5A – 24A
Resolution	0.005%	Regulating range	0~120%FS
Power of V/I output	Max. 20VA	Stability	0.01%/60s
Distortion factor	<0.3% for linear resistance load	Frequency range	45Hz – 65Hz
Frequency Resolution	±0.0001	Frequency accuracy	5×10-5
Phase angle range	0~359.99º	Phase angle Resolution	0.01º
Phase angle accuracy	0.05º

DC output :

voltage output range	75mV – 1000V	current output range	0.5A – 24A
Resolution	0.005%	Regulating range	0~120%FS
Power of the current output	Max. 20W	Stability	0.01%/60s
ripple voltage	Max.1%

Main Features

1 . This instrument offers an automatic or manual calibration to the basic errors for various kinds of industrial-frequency electric meter ( voltmeter , ammeter , wattmeter , cymomer and power factor meter ) , and measure the variables caused by the effects of the voltage , current , wave form , power factor.

2 . This instrument offers an automatic or manual calibration to the basic errors for various kinds of transmitter ( voltage transmitter , current transmitter , power transmitter , frequency transmitter , power factor transmitter ) , and measure the variables caused by the effects of the voltage , current , wave form , power factor .

3 . This instrument can generate harmonic wave with 2~31 order, and it is can be program-controlled that the quantity and times of the harmonic wave, and the phase angle of the harmonic wave vs. fundamental wave.

4 . With frequency range of 40Hz~1kHz, the power amplifier has fine linearity; The current amplifier is a constant-current source and the voltage amplifier is also a constant-voltage source. Because of light in weight, this instrument is suitable for on-the-spot calibration.

5 . In the measurement of AC voltage , current , active power , its accuracy is 0.05 level; because the device is provided with a higher 60KHz working frequency digital to frequency converter ( DFC ) and a plurality of the current range , so the measurement of electrical energy accuracy can also guarantee for grade 0.05. So the device with high precision and stability , combines the testing functions of electrical measuring transmitter , AC / DC ammeter and energy meter ( alternative with partial functions can also be customized as required ) .

6 . Equipped with USB interface , this instrument can automatically or manually calibrate via upper computer software ( optional part ) , and can process and manage the calibration data .

7 . Equipped with a high capacity nonvolatile memory , this instrument can save over 300 meters' original calibration data for review and upload .