Calibration device for three-phase AC/DC indicator instruments-Global supplier

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Room 1118, 11th Floor, Union Building, No. 350 Wuning Road, Putuo District, Shanghai

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Calibration device for three-phase AC/DC indicator instruments

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Product details

Device level

0.05（0.03）

Voltage range (V)

10. 20, 50, 100, 200, 400, 800;

Current range (A)

0.1, 0.25, 0.5, 1, 2.5, 5, 10, 25, 50, 100;

Main functions and features

1. This device can calibrate AC instruments, DC instruments, transmitters, AC sampling tables, energy meters, harmonic measuring instruments, etc. up to level 0.2 (level 0.1);
2. The standard meter used can measure the DC voltage and current values output by the electrical measurement transmitter, including preferred and non preferred values, with a measurement error of ≤ ± 0.01%. Automatic calibration of transmitters can be achieved through computer control；
3. Equipped with a standard meter and a high-precision digital/frequency converter (DFC), the maximum frequency output of the standard pulse reaches 2MHz. Through computer control, automatic calibration of the electric energy meter can be achieved；
4. The following technical indicators of the device can achieve self inspection:
1) The voltage, current, single-phase power, and three-phase cut rate stability output by the device;
2) Distortion of output voltage and current;
3) Symmetry of three-phase voltage and three-phase current;
4) Magnetic induction intensity for placing the inspected table (option)

Technical indicators

1. Verification conditions
1) Environmental temperature 23 ℃± 2 ℃
2) Environmental humidity 50% R.H. ± 10%
3) Power supply voltage single-phase 220V ± 5% (for single-phase devices with 24 meters or more, three-phase four wire power supply)
4) Power frequency 50Hz ± 1%
5) The magnetic induction intensity of the environmental magnetic field is less than 0.0005mT
6) Preheating and reading
Before conducting any measurement, the device must be under the specified reference conditions and preheated for at least 15 minutes to achieve thermal stability. When manually verifying, at each load power, the opening should be omittedThe first 1-3 error values that appear.
2. Communication output
1) Voltage range (V): 10, 20, 50, 100, 200, 400, 800;
2) Current range (A): 0.1, 0.25, 0.5, 1, 2.5, 5, 10, 25, 50, 100;
3) Adjustment range: 0~120% (excluding 800V voltage and 100A current)
4) Adjustment fineness: 0.005%
5) Output voltage, current, power stability: ≤ 0.01%/60s
6) Maximum output capacity per phase voltage: 50VA
7) Maximum output capacity per phase current: 100VA
8) Distortion of sine wave output: ≤ 0.3%.
3. Fundamental phase shift
1) Phase shifting is based on UA, and UB, UC, IA, IB, and Ic can all shift UA by 0.00 º~359.99 º;
2) The phase shift of the current to the same phase voltage is 0.00 º~359.99 º, and the phase adjustment of amplitude and phase value can output the required three-phase unbalanced output;
3) Accuracy: ± 0.2 º
4. Output frequency
1) Adjustment range 45~65HZ: Adjust fineness 0.002%:
2) Adjust fineness 0.001HK @ accuracy 0.05 (0.02>%):
3) The accuracy of the set value is 5 × 10-5. @Stability
5. Distortion wave output
1) Harmonic frequency: 2-31 times, containing 0-30 harmonics simultaneously
2) Harmonic amplitude: The peak to peak value of the total harmonic should not exceed 50% of the rated value of the fundamental wave (i.e. voltage and current range) represented by peak to peak value; At the same time, including the fundamental wave, the peak value of the peak should not be greater than the peak value125% of the rated value of the fundamental wave represented by a peak value
3) Each harmonic shifts the phase of the fundamental wave (with the positive zero crossing of the fundamental wave as the reference phase) from 0 to 360 degrees
6. Symmetry of three-phase phase angle (without phase adjustment)
1) Three phase four wire: 120 º ± 0.2 º between phase voltages;
2) Three phase three wire: UAB lags behind UCB by 60 º ± 0.2 º;
3) Phase current to phase voltage of the same name: ± 0.20 º.
7. DC output
1) Voltage range (including auxiliary range)
mV：45、50、60、75、100、150、200、250、300；
V： 0.45、0.5、0.6、0.75、1、1.5、2、2.5、3、4.5、5、7.5、10、15、20、25
30, 45, 50, 60, 75, 100, 150, 200, 250, 300, 450, 600, 750, 1000;
2) Current range (including auxiliary range)
μA：5、7.5、10、15、20、25、30、50、75、100、150、200、250、300；
mA：0.5、0.75、1、1.5、2、25、3、5、7.5、10、15、20、25、30；
A： 0.05、0.075、0.1、0.15、0.2、0.25、0.3、0.5、0.75、1、1.5、2、2.5、3、
5. 7.5, 10, 15, 20, 25, 30:
3) Output capacity: maximum 3OW;
4) Adjustment range: 0~120% (excluding 1000V voltage and 3OA current);
5) Adjustment fineness: 0.002%;
6) Accuracy: 0.05 (0.02)%:
7) Stability: The change in full-scale output value within 1 minute is ≤± 0.01% RG;
8) Error caused by ripple and noise voltage ≤ ± 0.01% RG;
9) Error caused by load from no load to full load ≤± 0.01% RG
8. Accuracy level of the device: 0.05 (0.03).
9. The allowable error for measuring power frequency voltage, current, active power, and active energy of the device is 0.05% (0.03%)
10. Allowable error for measuring reactive power and electrical energy of the device: 0.1%
11. Phase measurement error: ± 0.05 º
12. Power factor measurement error: ± 0.0002
13. Working power supply: single-phase 220V ± 10%, 50Hz ± 5%
14. Operating environment: temperature 20 ℃± 10 ℃, relative humidity: ≤ 85% RH
15. Volume weight: 1800 × 80O × 750mm3, approximately 135kg

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