• Application scenario 1: The maximum DC voltage output is 1550 V, meeting the requirements of 1.15 Un voltage test of 1 kV electric energy meter; The maximum DC current output is 600 A, meeting the requirements of 1.2 In current test of 100 A watt hour meter. With the power pulse measurement function, the test of direct connected DC energy meters.

• Application scenario 2：The instrument has 10 μ V~4.4 V four wire small signal voltage source, with 1550 V DC voltage source and electric energy pulse measurement function, can carry out relevant testing work of indirect connected DC energy meters.

• Application scenario 3：The instrument supports 600 A maximum current output option, with 1550 V DC voltage source and electric energy pulse measurement function, and can carry out relevant tests on the whole of indirect connected DC energy meters and DC shunt.

• DC high current standard source: the maximum output is 600 A, which can be used as the primary current input of the DC shunt.

• DC small signal voltmeter: support voltage input range is 10 μV~4.4 V, which can measure the secondary output voltage of the shunt

• DC shunt manual crimping device (option): manually compress the current terminal of the DC shunt and connect it with the current source to form a current loop.

• Verification and test of DC shunt (option): it can measure the resistance value and basic error of the shunt, and draw R(t) curve.

• Calibration of DC voltmeter and ammeter: the device has a built-in DC voltage standard source with an output range of 10 mV ～ 1550 V and a DC current standard source with an output range of 1 mA ～ 600 A. The voltage and current accuracy of the class 0.02 device reaches class 0.01, which is applicable to the calibration of DC voltmeter or ammeter of class 0.05 and below.

• Calibration of DC wattmeter: a virtual power standard source composed of independent DC voltage and DC current output. The accuracy of a class 0.02 device reaches class 0.02 , which is applicable to the calibration of DC power meters of class 0.1 and below.

• The maximum output of its DC standard voltage source is 1550 V, and the maximum output of its DC standard current source is 600 A; The output range of the DC standard small signal voltage source used for the verification of indirect connected DC energy meters reaches ± (10 μ V～4.4 V）

• The maximum DC voltage measurement of the instrument can reach 4.4 V, and the maximum DC resistance measurement can reach 200 mΩ.

• Built in clock module with precision up to 0.2 ppm, which can measure the second pulse signal for daily timing error test

• Built in GPS module and antenna can receive GPS standard clock signal.

☆ Auxiliary power supply

• Each meter position has built-in auxiliary power supply, which can provide DC 24 V or AC 220 V power supply for electronic meters for measuring DC electrical energy (type A).

• Four wire small signal voltage source：Precise output ± (10 μ V ～ 4.4 V) small signal voltage signal is used as the current input of indirect access DC watt hour meter (the specification of shunt can be set and displayed according to its primary current).

• With RS232 communication interface, software functions can be customized according to customer needs

Class 0.05

Class 0.02

Class 0.05

Class 0.02

100 mV

1 μV

0.005

3.5 μV

120 + 80

60 + 5 μV

200

< 1.0

300 mV

1 μV

0.005

0.002

120 + 80

60 + 40

200

< 1.0

1 V

10 μV

0.005

0.002

120 + 80

60 + 40

200

< 1.0

3 V

10 μV

0.005

0.002

120 + 80

60 + 40

200

< 1.0

10 V

0.1 mV

0.005

0.002

120 + 80

60 + 40

200

< 1.0

30 V

0.1 mV

0.005

0.002

120 + 80

60 + 40

200

< 1.0

100 V

1 mV

0.005

0.002

120 + 80

60 + 40

200

< 1.0

300 V

1 mV

0.005

0.002

120 + 80

60 + 40

60

< 1.0

600 V

1 mV

0.005

0.002

120 + 80

60 + 40

30

< 1.0

1000 V

10 mV

0.005

0.002

120 + 80

60 + 40

15

< 1.0

1500 V [2]

10 mV

0.005

0.002

120 + 80

60 + 40

10

< 1.0

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

[2]：1500V range is an option.

Class 0.05

Class 0.02

Class 0.05

Class 0.02

10 mA

0.1 μA

0.005

0.003

120 + 80

60 + 40

12

< 0.5

20 mA

0.1 μA

0.005

0.003

120 + 80

60 + 40

12

< 0.5

50 mA

0.1 μA

0.005

0.003

120 + 80

60 + 40

12

< 0.5

100 mA

1 μA

0.005

0.003

120 + 80

60 + 40

12

< 0.5

200 mA

1 μA

0.005

0.003

120 + 80

60 + 40

12

< 0.5

500 mA

1 μA

0.005

0.003

120 + 80

60 + 40

3

< 0.5

1 A

10 μA

0.005

0.003

120 + 80

60 + 40

3

< 0.5

2 A

10 μA

0.005

0.003

120 + 80

60 + 40

3

< 0.5

5 A

10 μA

0.005

0.003

120 + 80

60 + 40

3

< 0.5

10 A

0.1 mA

0.005

0.003

120 + 80

60 + 40

3

< 0.5

20 A

0.1 mA

0.005

0.003

120 + 80

60 + 40

3

< 0.5

50 A

0.1 mA

0.005

0.003

120 + 80

60 + 40

3

< 1.0

100 A

1 mA

0.005

0.003

120 + 80

60 + 40

3

< 1.0

200 A

1 mA

0.005

0.003

120 + 80

60 + 40

3

< 1.0

500 A

1 mA

0.005

0.003

120 + 80

60 + 40

3

< 1.0

Note: [3] As the current input of the direct connected DC energy meters, or the current input of the external shunt of the indirect connected DC energy meters;

1 mV

10 nV

0.1 μVrms

120 + 0.3 μV

—

< 0.2

3 mV

10 nV

0.3 μVrms

120 + 1 μV

—

< 0.2

10 mV

0.1 μV

1 μVrms

120 + 3 μV

—

< 0.2

30 mV

0.1 μV

0.002

120 + 80

—

< 0.2

100 mV

1 μV

0.002

120 + 80

—

< 0.2

300 mV

1 μV

0.002

120 + 80

≤ 10

< 0.2

1 V

10 μV

0.002

120 + 80

≤ 10

< 0.2

4 V

10 μV

0.002

120 + 80

≤ 10

< 0.2

Note: [4] When the indirect connected DC energy meters is verified separately, it can be used as its current input (corresponding to the shunt voltage)

1 mV

10 nV

120 + 2 μV

30

3 mV

10 nV

120 + 2 μV

30

10 mV

0.1 μV

120 + 2 μV

10

30 mV

0.1 μV

120 + 80

10

100 mV

1 μV

120 + 80

10

300 mV

1 μV

120 + 80

5

1 V

10 μV

120 + 80

5

4 V

10 μV

120 + 80

5

Class 0.05

Class 0.02

5 A

1 mV

20.0000 μΩ～200.000 μΩ

0.232%

0.222%

10 mV

200.000 μΩ～2.00000 mΩ

0.052%

0.042%

100 mV

2.000 00 mΩ～20.000 0 mΩ

0.04%

0.03%

1 V

20.000 0 mΩ～200.000 mΩ

0.04%

0.03%

10 A

1 mV

10.000 0 μΩ～100.000 μΩ

0.232%

0.222%

10 mV

100.000 μΩ～1.000 00 mΩ

0.052%

0.042%

100 mV

1.000 00 mΩ～10.000 0 mΩ

0.04%

0.03%

1 V

10.000 0 mΩ～100.000 mΩ

0.04%

0.03%

20 A

1 mV

5.000 00 μΩ～50.000 0 μΩ

0.232%

0.222%

10 mV

50.000 0 μΩ～500.000 μΩ

0.052%

0.042%

100 mV

500.000 μΩ～5.000 00 mΩ

0.04%

0.03%

1 V

5.000 00 mΩ～50.000 0 mΩ

0.04%

0.03%

50 A

1 mV

2.000 00 μΩ～20.000 0 μΩ

0.232%

0.222%

10 mV

20.000 0 μΩ～200.000 μΩ

0.052%

0.042%

100 mV

200.000 μΩ～2.000 00 mΩ

0.04%

0.03%

1 V

2.000 00 mΩ～20.000 0 mΩ

0.04%

0.03%

100 A

1 mV

1.000 00 μΩ～10.000 0 μΩ

0.232%

0.222%

10 mV

10.000 0 μΩ～100.000 μΩ

0.052%

0.042%

100 mV

100.000 μΩ～1.000 00 mΩ

0.04%

0.03%

1 V

1.000 00 mΩ～10.000 0 mΩ

0.04%

0.03%

200 A

1 mV

500.000 nΩ～5.000 00 μΩ

0.232%

0.222%

10 mV

5.000 00 μΩ～50.000 0 μΩ

0.052%

0.042%

100 mV

50.000 0 μΩ～500.000 μΩ

0.04%

0.03%

1 V

500.000 μΩ～5.000 00 mΩ

0.04%

0.03%

500 A

1 mV

200.000 nΩ～2.000 00 μΩ

0.232%

0.222%

10 mV

2.000 00 μΩ～20.000 0 μΩ

0.052%

0.042%

100 mV

20.000 0 μΩ～200.000 μΩ

0.04%

0.03%

1 V

200.000 μΩ～2.000 00 mΩ

0.04%

0.03%

Note [5]: The uncertainty of resistance measurement corresponding to other voltage values=(∆ U/U₀+∆ I/I₀), U₀ and I₀ are the reading values of current voltage and current respectively, ∆U and ∆I are the absolute error values of current measured voltage and current respectively

Accuracy

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

Electric energy pulse

Standard Electric Energy Pulse Output

High frequency full range value corresponds to 60 kHz;

Low frequency full range value corresponds to 6 Hz;

Pulse Output Frequency

Output frequency jitter time<10 μ s

Standard Electric Energy Pulse Input

Signal amplitude is 5V, TTL level;

Able to receive high-frequency pulses ≤ 150 kHz;

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 0.0001%

Maximum Burden Current

120 mA / Epitope

Protection Function

Replaceable fuse protection

AC Power Output

Output Voltage

220 V

Maximum Burden Current

20 mA / Epitope

Protection Function

Replaceable fuse protection

Temperature Performance

Storage temperature：-20 °C ~ 70 °C；

Humidity Performance

Working humidity：( 20 % ~ 50% ) R·H，No condensation；

Storage humidity：( 15 % ~ 80% ) R·H，No condensation；

Interface

RS232