Check digital clamp CT calibration ammeter for test

Application

It is suitable for power plant and substation work area of grid companies, make try department and the instrument classes, and national levels measuring and testing institutions, railway, petroleum, chemical industry and other large industrial and mining enterprises, scientific research units, etc.

Introduction

The device is according to verification regulation JJG124-2005 "ammeter, voltmeter, power meter and resistance meter calibration regulations of the requirements and design 0.05 magnitude AC and DC standard sources. The source of the signals of the DSP and 16 high-speed digital-to-analog converters can control of the sine wave, distortion wave source. The display users graphics standard 240 x 128 LCD monochrome screen, chart characters, showed clear. Circuit design perfect protection, reliable operation, easy to operate.

Main Functions and Features

1. The device consists of a single-phase AC voltage standard resource, current standard resource and DC voltage, current standard resource of standard resource.

2. Have calibration function, which can accord to the standard of external value, fixed standard resource output values.

3. The setting of the range for verification 1999 (9), 3999 (9) a display of the digital multimeter.

4. Manual and semi-auto inspection 0.2 % and below levels of digital multimeter, an analogue meter installation type digital instrument, including DC analog output of digital instrument.

5. To generate containing 2 ~ 31 harmonic wave distortion, the harmonic number, number, amplitude and phase of the harmonic wave to base wave all can be programmed control.

6. With RS232 interfaceand large capacity non-volatile memory, it can store 300 blocks inspected meter test data. Through the PC software, the PC controls this device automatic and manual inspection, and the results are processing and management.

Technical Data

AC output

Voltage range: 200 mV, 400 mV, 2 V, 4 V, 20 V, 100 V, 200 V, 500 V, 1000 V;

Current range : 20μA, 40μA, 200 μ A, 400 μ A, 2mA, 4mA, 20mA, 40mA, 0.2A ,0.5A, 2A, 5A, 10A, 20A;

Adjusting range 0 ~ 120% (1000 V voltage except);

Adjust fineness 5 x 10^-5;

Voltage, current output capacity 20 VA;

Voltage, current adjustment for accuracy

± (0.03% RD + 0.02% FS);

Voltage, current output stability ≤0.01% / 60 s;

Voltage, current waveform distortion degree ≤0.3%;

Sine wave output frequency range (45-65) N Hz (N = 1, 2, 3,...... 31);

Sine wave frequency output fineness 0.001 N Hz (N = 1, 2, 3,...... 31);

Phase adjustment range 0 ~ 359.99 °;

Phase adjust fineness 0.01 °;

Harmonic output 2 ~ 31, range 0 ~ 20% (base wave ratings);

Harmonic phase fineness 0.01 ° N (N for harmonic frequency, N = 2 and 4,...... 31);

Output can also contains multiple harmonics, also can set base wave amplitude is 0, output power frequency than the sine wave.

DC output

Voltage range :200 mV, 400 mV, 2 V, 4 V, 20 V, 40 V, 100 V, 200 V, 400 V , 1000 V;

Current range: 20μA, 40μA, 200 μ A, 400 μ A, 2 mA, 4 mA, 20 mA, 40 mA, 0.2 A, 1 A, 2.5 A, 5 A, 10 A, 20 A;

Voltage, current, the adjusting range 0 ~ 120% (1000 V voltage except);

Voltage, current adjust fineness 5 x 10^-5;

Voltage output capacity 20 W;

Current output capacity of 30 W;

Voltage, current adjustment for accuracy ± (0.03% RD + 0.02% FS);

Voltage, current output stability ≤ 0.01% / 60 s;

Voltage, current output ripple ≤1%.

Frequency output

Sine wave output range (using AC voltage, current output provide)

(45-65) N Hz (N = 1, 2, 3,...... 31);

Fineness 0.001 N Hz (N = 1, 2, 3,...... 31);

The setting accuracy 5 x 10^-5;

Point 1 KHz square wave frequency output, 5 KHz, 10KHz, 50KHz, 100KHz, 200KHz, 1000KHz;

Square wave amplitude 4.5 V;

Electronic resistance box output

Quantity process

0 ~ 200 Ω, 200 ~ 400 Ω, 0 ~ 2 K Ω, 2 K Ω ~ 4 K Ω, 0 ~ 20 K Ω, 20 K Ω ~ 40 K Ω, 0 ~ 200 K Ω, 200 K Ω ~ 400 K Ω, 0 ~ 2 M Ω, 2 M Ω ~ 4 M Ω;

Fineness 0.025%;

Setting accuracy ± (0.12% RD + 0.08% FS).

Work power

Single-phase AC 220 V±10%, Frequency 50/60 Hz

Use of the environment

Temperature 0 °C~40 °C, Relative humidity ≤85% RH.

Volume and weight

440 mm x 450 mm x 160 mm, about 12 kg