1
General
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. Devicehas the advantages of high precision,stable and reliable work, convenient
operation and flexible features such as.
2 Main functions
& features
l 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.
l 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.
l 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.
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.
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).
l Equipped with USB
interface, this instrument can automatically or manually calibrate via upper
co mputer software (optional part), and can process and manage the calibration
data.
l Equipped with a high
capacity nonvolatile memory, this instrument can save over 300 meters’ original
calibration data for review and upload.
3 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
|
|
Accuracy
|
Voltage
current
Active
power andelectric energy
|
0.05%
|
|
Reactive power and electric energy
|
0.1%
|
|
Stability
|
0.01%/60s
|
|
Distortion factor
|
< 0.3% for linear resistance load
|
|
Frequency range
|
45Hz – 65Hz
|
|
Frequency Resolution
|
0.001Hz
|
|
Frequency accuracy
|
5×10－5
|
|
Phase angle range
|
0~359.99º
|
|
Phase angle Resolution
|
0.01º
|
|
Phase angle accuracy
|
0.05º
|
|
Harmonic output
|
Harmonic
wave
|
2~31 order
|
|
Amplitude
|
0~20%
|
|
phase
angle fine
|
0.01°·N (N is the harmonic order)
|
|
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
|
|
Accuracy
|
75mV output
|
0.1%
|
|
other
|
0.05%
|
|
Stability
|
0.01%/60s
|
|
ripple voltage
|
Max.1%
|
|
DC meter(for transmitter output meter) accuracy
|
voltage
|
0~±24V
|
|
current
|
0~±24mA
|
|
OTHER
|
|
Voltage Supply
|
220V±10% 50/60Hz±2Hz
|
|
Ambient temperature
|
10°C -- 30°C
|
|
Relative humidity
|
35% -- 85%
|
|
Dimensions (W×H×D) (mm)
|
460×430×185
|
|
Weight (kg)
|
20kg
|
