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

• Current conversion measurement: The instrument is equipped with a sensor-specific measurement interface, which can supply power to the sensor and measure its secondary signal at the same time, and can be connected to a precision current sensor (such as TH0540) to extend the current range to 500 A, 1 kA or even more, and directly display the size of the primary current of the measured sensor by setting the ratio of the current sensor on the instrument.

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

• When measuring voltage or current, distortion and ripple measurements can be completed simultaneously, and the maximum measurement bandwidth of DC ripple is 5 kHz, and AC supports the measurement of the 2nd ~ 63rd harmonic.

• The DC+AC measurement function is very suitable for detecting energy meter verification devices with ripple or harmonic output.

• Support 0.1 m V ~ 12 V (DC); 2 m V ~ 10.2 V (AC) small signal voltage measurement, equipped with ultra-low thermal electric potential terminals and test wires, and can improve measurement accuracy and withstand overload signals up to 150 Vpk at most.

• Application scenario 1: With a stable high-current source and precision current sensor, it can be used to calibrate shunts or other I/V converters.

• Application scenario 2: With its own precision voltage measurement function, it can be used to evaluate the indirect access DC energy meter verification device.

• The instrument has the function of power calculation, the user can connect the voltage divider, shunt, transformer, sensor and other range extenders, and set the scale 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 electricity to be measured according to the function f(x) = kx + b.

S/N

Function

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

The ripple waveform can be displayed in real time, and the rms value (RMS) and peak-to-peak value (P-P) of the ripple can be measured.

AC power measurement also has an oscilloscope function, which can display the waveform of the AC signal under test in real time.

Calculate two types of harmonic distortion: THD/T (harmonic relative to full wave) and THD/F (harmonic relative to fundamental wave).

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

Visualize the spectrum of each harmonic (100% fundamental) in the form of a histogram.

S/N

Function

Data statistical analysis: calculate the maximum (Max), minimum value (min), peak-peak (P-P), average value (AVG), standard deviation (S.dev), divergence (Div), etc. of the measured electricity.

Power Trend Test: Curve the power over time in real time during the test cycle.

Normal distribution histogram: Displays the distribution of the amount of electricity being 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

20 + 2 m

80 + 40

100 + 50

0.2

300 mV

10 nV

12 + 15

80 + 40

100 + 50

0.2

1 V

0.1 μV

12 + 8

80 + 40

100 + 50

0.1

3 V

0.1 μV

12 + 8

80 + 40

100 + 50

0.1

10 V

1 μV

12 + 8

80 + 40

100 + 50

0.1

30 V

1 μV

12 + 8

80 + 40

100 + 50

0.1

100 V

10 μV

12 + 8

80 + 40

100 + 50

0.1

300 V

10 μV

12 + 8

80 + 40

100 + 50

0.1

1000 V

0.1 mV

12 + 8

80 + 40

100 + 50

0.1

Note: [1] RD is the reading value and RG is the range value

DC

40Hz≤F≤200Hz

200Hz<f≤1 khz

Temperature coefficient (/°C)

@ (15 ~ 30)°C

100 μA

10 pA

30 + 3 nA

150 + 50

200 + 50

0.1

300 μA

10 pA

30 + 10 nA

150 + 50

200 + 50

0.1

1mA

0.1 nA

20 + 10

100 + 50

150 + 50

0.1

3 mA

0.1 nA

20 + 10

100 + 50

150 + 50

0.1

10 mA

1 nA

20 + 10

100 + 50

150 + 50

0.1

30 mA

1 nA

20 + 10

100 + 50

150 + 50

0.1

100 mA

10 nA

20 + 10

100 + 50

150 + 50

0.1

300 mA

10 nA

20 + 10

100 + 50

150 + 50

0.1

1 A

0.1 μA

20 + 10

100 + 50

150 + 50

0.1

3 A

0.1 μA

20 + 10

100 + 50

150 + 50

0.1

10 A

1 μA

20 + 10

100 + 50

150 + 50

0.1

30 A

1 μA

20 + 10

100 + 50

150 + 50

0.1

100 A

10 μA

20 + 10

100 + 50

150 + 50

0.1

200 A [2]

10 μA

30 + 10

150 + 50

200 + 50

0.1

500 A [2]

10 μA

30 + 10

150 + 50

200 + 50

0.1

Note [2]: 200 A and 500 A range currents are optional, and optional current sensors such as TH0540 must be used for range extension.

DC

40Hz≤F≤200Hz

200Hz<f≤1 khz

Temperature coefficient (/°C)

@ (15 ~ 30)°C

1 mV

0.1n V

50 + 0.3 μV

-

-

0.5

5 mH

0.1n V

50 + 0.5 μV

-

-

0.5

20 mV

1 nV

50 + 0.6 μV

100 + 3.0 μV

120 + 4.0 μV

0.5

100 mV

10 nV

40 + 15

80 + 40

100 + 50

0.2

500 mV

10 nV

40 + 15

80 + 40

100 + 50

0.2

2 V

0.1 mV

30 + 10

80 + 40

100 + 50

0.1

10 V

1 mV

30 + 10

80 + 40

100 + 50

0.1

Measurement uncertainty

DC voltage uncertainty + DC current uncertainty

AC power / electrical energy

Measuring range

The combination of AC voltage and AC current

Measurement uncertainty

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

Electrical energy pulses

Standard energy pulse input

It can directly receive the photoelectric pulse of the energy of the meter to be checked

Standard energy pulse output

The signal amplitude is 5 V at TTL level

FH=120 kHz ×power value÷voltage range value÷current range value

FL=120 kHz × power value÷ voltage range value÷ current range value÷ 10000

Electrical energy error display

Automatic display with a resolution of 0.00001%, 8-bit display

Warm-up time

30 minutes

Temperature performance

Working temperature: 15°C ~ 35°C; Storage temperature: -10°C ~ 50°C

Humidity performance

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

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

altitude

< 3000 m

Quality

Approx. 11 kg

Communication interface

RS232

Size

400 mm(W) × 302 mm(D) × 206 mm(H)