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TD1575 DC Energy Meters Verification Device

TD1575 is a platform device dedicated to the verification of DC electric energy meters, which consists of DC voltage standard source, DC current standard source, DC small signal voltage standard source (corresponding to the voltage of the shunt), multi meter position verification platform, verification software, etc. Support verification of direct connected and indirect connected DC energy meters at the same time.

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TD1575 DC Energy Meters Verification Device

TD1575 Verification Apparatus for DC Energy Meters

* This is for your reference only,the configuration and details may vary depending on the application scenarios

1. summary

TD1575 is a platform device dedicated to the verification of DC electric energy meters, which consists of DC voltage standard source, DC current standard source, DC small signal voltage standard source (corresponding to the voltage of the shunt), multi meter position verification platform, verification software, etc. Support verification of direct connected and indirect connected DC energy meters at the same time.


2. Product characteristics

Power/electric energy measurement: class 0.02, class 0.05。

DC standard voltage source:10 mV~1150 V / 1550 V(option)

DC standard current source:20 μA~120 A

DC four wire small signal voltage source:10 μV~4.4 V

Optional 6/12/16 meter position indirect connected DC energy meters verification platform.

Standard electric energy pulse input/output, used to detect the working error of electric energy meter

Auxiliary power supply is used to supply power for electronic meters for measuring DC electrical energy(type A).

Standard second pulse measurement is used to detect the daily timing error of the electric energy meter

Mobile measurement and control station, which can observe or control the output through the LCD touch screen


3. Applications

Verification of DC Energy Meter

TD1575 Verification Apparatus for DC Energy Meters two connection

Application scenario 1: The maximum DC voltage output is 1550 V, meeting the requirements of 1.15 Un voltage test of 1 kV DC energy meters; The maximum DC current output is 120 A, meeting the requirements of 1.2 In current test of 100 A DC energy meters. With the power pulse measurement function, the test of direct connected DC energy meters can be completed.


Application scenario 2:The instrument has 10 μV~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 in direct connected DC energy meters.




4. Characteristics

DC Energy Meter Frame

TD1575 Verification Apparatus for DC Energy Meters Indirect connected DC energy meters press bracket

Indirect connected DC energy meters press bracket: a metal terminal corresponding to the wiring hole of the DC electric energy meter is installed under the fixed meter position, and the wiring operation can be completed by pressing the handle.


Clock check function

TD1575 Verification Apparatus for DC Energy Meters Clock check function

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

TD1575 Verification Apparatus for DC Energy Meters 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

TD1575 Verification Apparatus for DC Energy Meters Four wire small signal voltage source

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).


Professional test software

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




5. Specifications

5.1 DC Voltage Output

Range

Resolution

Short Term Stability

(% / min)

Accuracy (k=2)

(ppm of reading + ppm of range) [1]

Maximum Burden Current (mA)

Ripple ( % )

Class 0.05

Class 0.02

Class 0.05

Class 0.02

100 mV

1 μV

0.005

0.002

120 + 80

80 + 20

50

< 0.2

300 mV

1 μV

0.005

0.002

120 + 80

80 + 20

50

< 0.2

1 V

10 μV

0.005

0.002

120 + 80

80 + 20

50

< 0.2

3 V

10 μV

0.005

0.002

120 + 80

80 + 20

50

< 0.2

10 V

0.1 mV

0.005

0.002

120 + 80

80 + 20

50

< 0.2

30 V

0.1 mV

0.005

0.002

120 + 80

80 + 20

50

< 0.2

100 V

1 mV

0.005

0.002

120 + 80

80 + 20

50

< 0.2

300 V

1 mV

0.005

0.002

120 + 80

80 + 20

30

< 0.2

600 V

1 mV

0.005

0.002

120 + 80

80 + 20

10

< 0.2

1000 V

10 mV

0.005

0.002

120 + 80

80 + 20

10

< 0.2

1500 V [2]

10 mV

0.005

0.002

120 + 80

80 + 20

10

< 0.2

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

[2]:1500V range is an option.

Output range:10 mV~1150 V,    6-bit display

1500 V voltage output option can be selected to expand the voltage output range to 10 mV ~ 1550 V

Protection function: Short circuit protection, overload protection


5.2 DC Current Output [3]

Range

Resolution

Short Term Stability

(% / min)

Accuracy (k=2)

(ppm of reading + ppm of range)

Maximum Burden Voltage (V)

Ripple ( % )

Class 0.05

Class 0.02

Class 0.05

Class 0.02

200 μA

1 nA

0.03 μA

0.02 μA

120+0.06 μA

60+0.04 μA

12

< 0.5

500 μA

1 nA

0.05 μA

0.03 μA

120+0.10 μA

60+0.06 μA

12

< 0.5

1 mA

10 nA

0.08 μA

0.04 μA

120+0.15 μA

60+0.08 μA

12

< 0.5

2 mA

10 nA

0.005

0.002

120 + 80

60 + 40

12

< 0.5

5 mA

10 nA

0.005

0.002

120 + 80

60 + 40

12

< 0.5

10 mA

0.1 μA

0.005

0.002

120 + 80

60 + 40

12

< 0.5

20 mA

0.1 μA

0.005

0.002

120 + 80

60 + 40

12

< 0.5

50 mA

0.1 μA

0.005

0.002

120 + 80

60 + 40

12

< 0.5

100 mA

1 μA

0.005

0.002

120 + 80

60 + 40

12

< 0.5

200 mA

1 μA

0.005

0.002

120 + 80

60 + 40

12

< 0.5

500 mA

1 μA

0.005

0.002

120 + 80

60 + 40

3.5

< 0.5

1 A

10 μA

0.005

0.002

120 + 80

60 + 40

3

< 0.5

2 A

10 μA

0.005

0.002

120 + 80

60 + 40

3

< 0.5

5 A

10 μA

0.005

0.002

120 + 80

60 + 40

3

< 0.5

10 A

0.1 mA

0.005

0.002

120 + 80

60 + 40

3

< 0.5

20 A

0.1 mA

0.005

0.002

120 + 80

60 + 40

3

< 0.5

50 A

0.1 mA

0.005

0.002

120 + 80

60 + 40

3

< 1.0

100 A

1 mA

0.005

0.002

120 + 80

60 + 40

3

< 1.0

Note: [3] As the current input of the direct connected DC energy meters

Output range:20 μA~120 A,6-bit display

Protection function: open circuit protection, overload protection

The device has no automatic short circuit function, and the meter position short circuit terminal is reserved.


5.3 DC Small Signal Voltage Output[4]

Range

Resolution

Short Term Stability

(% / min)

Accuracy (k=2)

(ppm of reading + ppm of range)

Maximum Burden Current (mA)

Ripple ( % )

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)

Output range:± ( 10 μV~4.4 V ),6-bit display

The specification and current voltage ratio of the shunt can be set, and the output value can be displayed according to the voltage or current converted by the shunts.

Multiple small signal DC voltages are isolated from each other and high voltage circuits


5.4 Daily timing error

Annual measurement uncertainty of device standard clock:2×10-7

Daily timing error supports two error display modes: s/d and ppm/ppb


5.5 DC Electric Energy Index

DC Power/Electric Energy

Range

Combination of DC voltage and DC current (or DC small signal voltage)

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%

Difference At Different Epitope

< ±0.025%


5.6 Auxiliary power supply

DC Power Output

OutputVoltage

24 V / 48 V

Maximum Burden Current

120 mA / Epitope

Protection Function

Replaceable fuse protection

AC Power Output

Output Voltage

220( Isolated)

Maximum Burden Current

20 mA /meter position

Protection Function

Replaceable fuse protection

Note: Other types of power supply can be customized.


6. General Specifications

Power Supply

AC (220&plusmn;22) V,(50&plusmn;2) Hz

Temperature Performance

Working temperature:0°C~45°C

Calibration temperature:18°C~28°C

Storage temperature:-20°C~70°C

Humidity Performance

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

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

Interface

RS232


7. Ordering Information

TD1575 Verification Apparatus for DC Energy Meters Ordering Information




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