GDDO-20C AC/DC Electric Meter Calibration DeviceGDDO-20C AC/DC
Electric Meter Calibration Device is used to detect basic
error of various power frequency electric instruments in power
systems, including voltmeter, ammeter, wattmeter, ohmmeter, single
phase & three phase AC energy meters (optional) and basic error of
DC volt-meter and ammeter.For meter's part, it takes high precision
power frequency AC collector as core technology, which consists of
digital signal processor (DSP) and 16-digit high speed
analog-digital converter; For signal source, it uses DSP and
16-digit high speed analog-digital converter to form signal
source that produces sine wave signal and distortion wave signal.
FeaturesAccuracy class of 0.05. When AC voltage, AC current and
active power are measured, the device is equipped with a
digital/frequency converter (DFC) with a working frequency higher
than 60kHz and multiple current ranges, so high accuracy is
guaranteed.The distortion wave of 2~31 times, number, times and
amplitude of harmonics, and phase of harmonic to fundamental
wave can be all programmed.6.5-inch color TFT LCD screen,
clear and bright display.With RS232 communication port. With a
large capacity non-volatile memory, can store test results
of 300 meters under test, support data view and data upload
function.With good reliability, easy to operate.SpecificationPower
frequency AC outputVoltage range (V)50, 100, 200, 400, 600 (800V is
optional), Max. output capacity 20VACurrent range (A)0.5, 1, 2.5,
5, 10, 20, Max. output capacity 20VAVoltage adjustment range0~130%,
fineness adjustment 5*10Current adjustment range0~130%, fineness
adjustment 5*10Accuracy of voltage, current, active power and
energy0.05%Accuracy of reactive power and energy0.1%Phase accuracy
of current to phase voltage0.05°FrequencyAdjustment range:
45~65Hz,Fineness adjustment: 0.001HzSetting value accuracy:
0.01HzPhase Adjustment range: 0~359.99°Fineness adjustment:
0.01°Setting value accuracy: 0.05°Distortion degree of voltage and
current output waveform ≤0.3%Stability of
voltage, current and power output≤0.01%/60s (peak-to-peak
value)Harmonics2~31 timesAmplitude: 0~20%Phase fineness: 0.01°*N
("N" refers to harmonic order)DC outputVoltage range (V) 0.075, 75,
150, 300, 500, 1000, Max. output capacity 20WCurrent range (A)0.5,
1, 2.5, 5, 10, 20, Max. output capacity 20WAdjustment range of
voltage and current 0~120% (not including 1000V), fineness
adjustment 5*10Stability of voltage and current output≤0.01%/60s
(peak-to-peak value)Accuracy of voltage setting value0.05%Accuracy
of current setting value0.1%Accuracy at 75mV output (Load
≥5Ω)0.1%General parametersPower supplySingle phase 220V±10%,
50Hz±5%Use conditions20ºC±10ºC,
≤85%RHDimension460*460*175mmWeightAbout 20kg /* January 22,
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