• Direct current measurement：Use a pair of quick connect terminals to directly measure 10 μA ~ 120 A（DC）； 10 μA~80 A (AC) wide range (AC) current.

• Current conversion measurement：It can be equipped with a precision current transducer (TH0540) to expand the current range to 500 A, 1 kA or even more.

• The instrument supports DC, AC and DC+AC measurement modes, and the AC fundamental frequency is 40 Hz~1 kHz.

• When measuring voltage or current, the measurement of distortion and ripple can be completed synchronously. The maximum measurement bandwidth of DC ripple reaches 5 kHz. AC supports the measurement of the 2nd~63rd harmonics.

• DC+AC measurement function is very suitable for verifying the verification device of electric energy meter with ripple or harmonic output function

• Support small signal voltage measurement of 0.1 mV~12 V (DC) and 2 mV~10.2 V (AC), and can withstand overload signal of 150 Vpk at most.

• Application scenario 1: It can be used to calibrate shunt or other I/V transformer with stable large current sources and precision current transducer.

• Application Scenario 2: With its own precision voltage measurement function, it can be used to assess the verification equipment for indirect connected DC electrical energy meters.

• The instrument has the power calculation function. Users can connect voltage divider, shunt, transformer and other range extenders externally, set the ratio k and offset b, measure the secondary output signal x of the extender through the instrument, and then calculate the actual value of the primary power to be measured according to the function f(x)=kx+b.

S/N

Function declaration

With DC ripple measurement function, it can measure ripple content in the range of 1 Hz~5 kHz.

It can display ripple waveform in real time, and measure RMS and P-P of ripple.

The AC electric quantity measurement also has the oscilloscope function, which can display the waveform of the measured AC signal in real time.

Calculate THD/T (harmonic vs. full wave) and THD/F (harmonic vs. fundamental wave) harmonic distortion.

The amplitude (RMS), content (%) and phase of the 2nd~63rd harmonic of each phase voltage or current can be analyzed in real time.

The spectrum of each harmonic is displayed visually in the form of histogram (fundamental wave is 100%).

S/N

Function declaration

Data statistics and analysis: Calculate the maximum (Max), minimum (Min), peak to peak (P-P), average (Avg), standard deviation (S.dev), divergence (Div), etc. of the measured electricity.

Power trend chart test: during the test cycle, draw the curve of power change with time in real time.

Normal distribution histogram: it displays the distribution of the electricity to be counted during the test period.

DC

40 Hz≤F≤200 Hz

200 Hz<f≤1 khz

Temperature Coefficient (/°C)

@(15 ~ 30)°C

100mV

10 nV

50 + 5 μ

120 + 80

200 + 100

3 +0.5 μV

300 mV

10 nV

30 + 6 μ

120 + 80

200 + 100

3 + 0.6 μV

1 V

0.1 μV

30 + 20

60 + 40

120 + 80

2.5 + 1

3 V

0.1 μV

30 + 20

60 + 40

120 + 80

2.5 + 1

10 V

1 μV

30 + 20

60 + 40

120 + 80

2.5 + 0.5

30 V

1 μV

30 + 20

60 + 40

120 + 80

2.5 + 1

100 V

10 μV

30 + 20

60 + 40

120 + 80

2.5 + 1

300 V

10 μV

30 + 20

120 + 80

200 + 100

3.5 + 1.5

1000 V

0.1 mV

30 + 20

120 + 80

200 + 100

3.5 + 1.5

Note [1] : (ppm = parts per million) (e.g.，10ppm = 0.001%).

DC

40 Hz≤F≤200 Hz

200 Hz<f≤1 khz

Temperature Coefficient (/°C)

@ (15 ~ 30)°C

100 μA

0.1 nA

50+ 5 nA

200 + 100

250 + 150

3 + 0.5 n

300 μA

0.1 nA

50+ 15 nA

200 + 100

250 + 150

3 + 1.5 n

1 mA

1 nA

30 + 20

200 + 100

250 + 150

2.5 + 1

3 mA

1 nA

30 + 20

60 + 40

100 +50

2.5 + 1

10 mA

10 nA

30 + 20

60 + 40

100 + 50

2.5 + 1

30 mA

10 nA

30 + 20

60 + 40

100 + 50

2.5 + 1

100 mA

0.1 μA

30 + 20

60 + 40

100 + 50

2.5 + 1

300 mA

0.1 μA

30 + 20

60 + 40

100 + 50

2.5 + 1

1 A

1 μA

30 + 20

200 + 100

250 + 150

2.5 + 1

3 A

1 μA

30 + 20

200 + 100

250 + 150

2.5 + 1

10 A

10 μA

30 + 20

200 + 100

250 + 150

2.5 + 1

30 A

10 μA

30 + 20

200 + 100

250 + 150

2.5 + 1

100 A

0.1 mA

30 + 20

200 + 100

250 + 150

2.5 + 1

200 A [2]

0.1 mA

30 + 20

200 + 100

250 + 150

3.5 + 1.5

500 A [2]

0.1 mA

30 + 20

200 + 100

250 + 150

3.5 + 1.5

Note [2]: 200 A and 500 A range current are options, and a current transducer such as TH0540 must be selected to expand the range.

DC

40 Hz≤F≤200 Hz

200 Hz<f≤1 khz

Temperature Coefficient (/°C)

@ (15 ~ 30)°C

1 mV

1 nV

40 + 0.2 μ

—

—

4 + 0.02 μ

10 mV

10 nV

40 +0.5 μ

120 + 80

200 + 100

3 + 0.05 μ

100 mV

100 nV

40 + 10

80 + 40

100 + 50

3 + 1.0

1 V

1 μV

40 + 10

80 + 40

100 + 50

2 + 0.5

10 V

10 μV

40 + 10

80 + 40

100 + 50

2 + 0.5

40Hz ≤ F ≤ 200 Hz

200 Hz < F ≤ 1 kHz

Frequency

40.000 00 Hz～1000.000 Hz

20 ppm

20 ppm

Phase

0.000 0°～359.999 9°

0.02°

0.05°

Accuracy

Uncertainty of DC voltage+uncertainty of DC current (or small signal voltage)

AC Power/Electric Energy

Measuring Range

Combination of AC voltage and AC current

Accuracy

Uncertainty of AC voltage+uncertainty of AC current，|PF|=1

Electric Energy Pulse

Standard Electric Energy Pulse Input

directly receive the photoelectric pulse of electric energy of the tested meter

Standard Electric Energy Pulse Output

Signal amplitude is 5V, TTL level

FH=60 kHz × Power value ÷ voltage range value ÷ current range value

FL=60 kHz × Power value ÷voltage range value ÷ current range value ÷ 10000

Electric energy error display

Automatic display, resolution 0.001%

Temperature Performance

Working temperature：15°C~35°C；

Storage temperature：-10°C~50°C

Humidity Performance

Working humidity：< 80% @ 30°C，< 70% @ 40°C，< 40% @ 50°C

Storage humidity：(20%~80%) R·H，No condensation

Interface

USB、RS232、RJ45