TD1250 Verification Device for Earth Continuity Testers

TD1250 is a precision AC/DC artificial resistance, intergraded a AC/DC ammeter. Applied for calibrating earth continuity tester and other AC/DC low resistance instruments. It can calibrate max permissible error, alarm setting error, test current setting error etc.
  • TD1250

  • TUNKIA

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TD1250 Verification Device for Earth Continuity Testers

TUNKIA TD1250 Verification Device for Earth Continuity Testers

1. Summary

TD1250 is a precision AC/DC artificial resistance, intergraded a AC/DC ammeter. Applied for calibrating earth continuity tester and other AC/DC low resistance instruments. It can calibrate max permissible error, alarm setting error, test current setting error etc.


2. Features

DC resistance simulation:200 μΩ (100 μΩ optional)~20 Ω.

AC resistance simulation:500 μΩ (300 μΩ optional)~15 Ω.

AC/DC current measurement:0.5 A~36 A (60A option).

Accuracy class:0.02/ 0.05/ 0.1.

• Harmonic and ripple function.

• Current waveform display function.

• With data statistics and analysis, stability test function.

• LCD touch screen.

• Setting output values by keys.


3. Applications

TUNKIA TD1250 Verification Device for Earth Continuity Testers



4. Characteristics

☆ Resistance Output

TUNKIA TD1250 Verification Device for Earth Continuity Testers

• Using four-terminals connections, can effective eliminate the measurement error introduced by the lead resistance.


☆ Multiple Output Mode

TD1250 Testing Apparatus for Earth Continuity Testers

• “Direct output”mode,User can set output value by physical key or touch screen.

TUNKIA TD1250 Verification Device for Earth Continuity Testers

• “Rotary Knob”mode,User can setting in clockwise direction or anticlockwise direction.


☆ Multiple Output Mode

TUNKIA TD1250 Verification Device for Earth Continuity Testers

• Touch “Calibration point”of screen for “% setting”.


☆ AC+DC Measurement

TUNKIA TD1250 Verification Device for Earth Continuity Testers

• Support DC/AC)measurement mode. AC frequency range:45 Hz ~ 65 Hz.

• Distortion and ripple test,max bandwidth of DC ripple reaches 1 kHz. Supports 2nd~32nd harmonics.


☆ DC Characteristic Analysis

TUNKIA TD1250 Verification Device for Earth Continuity Testers

S/N

Function

Current overshoot : The maximum value of the test current is displayed in DC mode, which is used to calculate the operating current overshoot;

Waveform display:With oscilloscope function ,can real time display of measured current waveform.

Ripple measurement:the instrument directly displays the ripple measurement results on the screen for users to read.



☆ AC Characteristic Analysis

TUNKIA TD1250 Verification Device for Earth Continuity Testers

S/N

Function

Harmonic distortion:Display THD/T(harmonic vs. full wave)、THD/F(harmonic vs. fundamental). Easy for users to real intuitively.

Harmonic data:Display the amplitude (RMS), content(%), phase of the 2nd~32nd harmonic, facilitate user analysis.

DC component:Display the DC component in the AC current signal. Easy for users to real intuitively.

Waveform display:with waveform display function, real time display of measured current waveform.


☆ Statistical Analysis

TUNKIA TD1250 Verification Device for Earth Continuity Testers

S/N

Function

Scoring cycle:0.5 s ~ 20 s integration period can be set(1s by default); it is convenient for users to set sampling data according to actual needs.

Statistical analysis:Real time record and statistics of current test data, including Max, Min, Avg, Span, Stab, S.dev, Time, test times N,etc; Easy for users to real intuitively.

5. Specifications

5.1 DC Current Measurement

Range

Resolution

Measurement uncertainty (k=2) (%*RD + mA) [1

Class 0.1

Class 0.05

Class 0.02

1 A

10 μA

0.05 + 1.5

0.02 + 1.0

0.01 + 0.5

2 A

10 μA

0.05 + 1.5

0.02 + 1.0

0.01 + 0.5

5 A

10 μA

0.05 + 1.5

0.02 + 1.0

0.01 + 0.5

10 A

100 μA

0.05 + 1.5

0.02 + 1.0

0.01 + 0.5

20 A

100 μA

0.05 + 2.5

0.02 + 2.0

0.01 + 1.0

30 A

100 μA

0.05 + 5.0

0.02 + 3.0

0.01 + 2.0

50 A [2]

100 μA

0.05 + 5.0

0.02 + 3.0

0.01 + 2.0

Note [1] : (ppm = parts per million) (e.g.,10ppm = 0.001%). Note [2]: 50 A Range is optional Accessories

• Measuring range(TD1250-30A specification, max range:30 A):0.5 A~36 A.

• Measuring range(TD1250-50A specification, max range: 50 A):0.5 A~60 A.

• Ripple frequency bandwidth: 1 Hz ~ 1 kHz, accuracy: ±0.02%*RG,effective value.


5.2 AC Current Measurement

Range

Resolution

Measurement uncertainty (k=2) (%*RD + mA) [1]

Class 0.1

Class 0.05

Class 0.02

1 A

10 μA

0.10 + 3.0

0.05 + 2.0

0.02 + 1.0

2 A

10 μA

0.10 + 3.0

0.05 + 2.0

0.02 + 1.0

5 A

10 μA

0.10 + 3.0

0.05 + 2.0

0.02 + 1.0

10 A

100 μA

0.10 + 3.0

0.05 + 2.0

0.02 + 1.0

20 A

100 μA

0.10 + 5.0

0.05 + 3.0

0.02 + 2.0

30 A

100 μA

0.10 + 10

0.05 + 5.0

0.02 + 5.0

50 A[2]

100 μA

0.10 + 10

0.05 + 5.0

0.02 + 5.0

• Measuring range(TD1250-30A specification, max range:30 A):0.5 A~36 A.

• Measuring range(TD1250-50A specification, max range: 50 A):0.5 A~60 A.

• AC frequency: 45 Hz ~ 65 Hz, accuracy: ±0.01 Hz, harmonic measurement: 2nd~32nd.


5.3 DC Simulated Resistance

Current Range

Setting Range of Resistance Value R

Adjustment Fineness

Measurement Uncertainty( k=2,A%*RD+R0 ) [1]

Class 0.1

Class 0.05

Class 0.02

50 A [2]

100 μΩ ≤ R ≤ 4 mΩ

20 nΩ

0.1 + 3 μΩ

0.08 + 1.5 μΩ

0.04 + 0.8 μΩ

4 mΩ < R ≤ 40 mΩ

200 nΩ

0.1 + 3 μΩ

0.06 + 1.5 μΩ

0.03 + 0.8 μΩ

40 mΩ < R ≤ 400 mΩ

2 μΩ

0.1

0.05

0.02

30A

200 μΩ ≤ R ≤ 6 mΩ

30 nΩ

0.1 + 5 μΩ

0.08 + 3 μΩ

0.04 + 1.5 μΩ

6 mΩ < R ≤ 60 mΩ

300 nΩ

0.1 + 5 μΩ

0.06 + 3 μΩ

0.03 + 1.5 μΩ

60 mΩ < R ≤ 600 mΩ

3 μΩ

0.1

0.05

0.02

20A

400 μΩ ≤ R ≤ 10 mΩ

100 nΩ

0.1 + 6 μΩ

0.08 + 5 μΩ

0.04 + 2.5 μΩ

10 mΩ < R ≤ 100 mΩ

1 μΩ

0.1 + 6 μΩ

0.06 + 5 μΩ

0.03 + 2.5 μΩ

100 mΩ ≤ R ≤ 1 Ω

10 μΩ

0.1

0.05

0.02

10A

800 μΩ ≤ R ≤ 20 mΩ

100 nΩ

0.1 + 15 μΩ

0.08 + 6 μΩ

0.04 + 3 μΩ

20 mΩ < R ≤ 200 mΩ

1 μΩ

0.1 + 15 μΩ

0.06 + 6 μΩ

0.03 + 3 μΩ

200 mΩ < R ≤ 2 Ω

10 μΩ

0.1

0.05

0.02

5A

1.6 mΩ ≤ R ≤ 40 mΩ

200 nΩ

0.15 + 30 μΩ

0.09 + 15 μΩ

0.045 + 6 μΩ

40 mΩ < R ≤ 400 mΩ

2 μΩ

0.12 + 30 μΩ

0.07 + 15 μΩ

0.035 + 6 μΩ

400 mΩ < R ≤ 4 Ω

20 μΩ

0.1

0.05

0.025

2A

4 mΩ ≤ R ≤ 100 mΩ

1 μΩ

0.20 + 50 μΩ

0.10 + 30 μΩ

0.055 + 15 μΩ

100 mΩ < R ≤ 1 Ω

10 μΩ

0.20 + 50 μΩ

0.10 + 30 μΩ

0.045 + 15 μΩ

1 Ω < R ≤ 10 Ω

100 μΩ

0.1

0.05

0.035

1A

8 mΩ ≤ R ≤ 200 mΩ

1 μΩ

0.30 + 90 μΩ

0.15 + 50 μΩ

0.08 + 30 μΩ

200 mΩ < R ≤ 2 Ω

10 μΩ

0.30 + 90 μΩ

0.15 + 50 μΩ

0.07 + 30 μΩ

2 Ω < R ≤ 20 Ω

100 μΩ

0.2

0.1

0.06

Note [2]: 50 A Range is optional Accessories

• Simulated resistance range(TD1250-30A specification, maximum range: 30 A):200 μΩ~20 Ω

Simulated resistance range(TD1250-50A specification, maximum range: 50 A):100 μΩ~20 Ω

• Display Digits:6-digit decimal display, set the resistance value through the number keys.


5.4 AC Simulated Resistance

Current Range

Setting Range of Resistance Value R

Adjustment Fineness

Measurement Uncertainty

( k=2,A%*RD+R0 ) [1]

Class 0.1

Class 0.05

Class 0.02

50 A [2]

300 μΩ ≤ R ≤ 3 mΩ

20 nΩ

0.3 + 5 μΩ

0.15 + 3 μΩ

0.08 + 1.5 μΩ

3 mΩ < R ≤ 30 mΩ

200 nΩ

0.24 + 5 μΩ

0.12 + 3 μΩ

0.06 + 1.5 μΩ

30 mΩ < R ≤ 300 mΩ

2 μΩ

0.2

0.1

0.04

30A

500 μΩ ≤ R ≤ 5 mΩ

30 nΩ

0.3 + 8 μΩ

0.15 + 5 μΩ

0.08 + 2.5 μΩ

5 mΩ < R ≤ 50 mΩ

300 nΩ

0.24 + 8 μΩ

0.12 + 5 μΩ

0.06 + 2.5 μΩ

50 mΩ < R ≤ 500 mΩ

3 μΩ

0.2

0.1

0.04

20A

750 μΩ ≤ R ≤ 7.5 mΩ

50 nΩ

0.3 + 10 μΩ

0.15 + 6 μΩ

0.08 + 4 μΩ

7.5 mΩ < R ≤ 75 mΩ

500 nΩ

0.24 + 10 μΩ

0.12 + 6 μΩ

0.06 + 4 μΩ

75 mΩ ≤ R ≤ 750 mΩ

5 μΩ

0.2

0.10

0.04

10A

1.5 mΩ < R ≤ 15 mΩ

100 nΩ

0.3 + 20 μΩ

0.15 + 12 μΩ

0.08 + 8 μΩ

15 mΩ < R ≤ 150 mΩ

1 μΩ

0.24 + 20 μΩ

0.12 + 12 μΩ

0.06 + 8 μΩ

150 mΩ < R ≤ 1.5 Ω

10 μΩ

0.2

0.1

0.04

5A

3 mΩ ≤ R ≤ 30 mΩ

200 nΩ

0.3 + 20 μΩ

0.2 + 15 μΩ

0.1 + 12 μΩ

30 mΩ < R ≤ 300 mΩ

2 μΩ

0.3 + 20 μΩ

0.15 + 15 μΩ

0.07 + 12 μΩ

300 mΩ < R ≤ 3 Ω

20 μΩ

0.2

0.1

0.05

2A

7.5 mΩ ≤ R ≤ 75 mΩ

5 μΩ

0.4 + 80 μΩ

0.2 + 50 μΩ

0.11 + 30 μΩ

75 mΩ < R ≤ 750 mΩ

50 μΩ

0.4 + 80 μΩ

0.2 + 50 μΩ

0.09 + 30 μΩ

750 mΩ < R ≤ 7.5 Ω

500 μΩ

0.2

0.14

0.07

1A

15 mΩ ≤ R ≤ 150 mΩ

1 μΩ

0.6 + 150 μΩ

0.3 + 90 μΩ

0.16 + 60 μΩ

150 mΩ < R ≤ 1.5 Ω

10 μΩ

0.6 + 150 μΩ

0.3 + 90 μΩ

0.14 + 60 μΩ

1.5 Ω < R ≤ 15 Ω

100 μΩ

0.4

0.2

0.12

Note [2]: 50 A Range is optional Accessories

• Simulated resistance range(TD1250-30A specification, maximum range: 30 A):500 μΩ~15 Ω.

Simulated resistance range(TD1250-50A specification, maximum range: 50 A):300 μΩ~15 Ω.

• Display Digits:6-digit decimal display, set the resistance value through the number keys.

• AC frequency: 45 Hz ~ 65 Hz, accuracy: ±0.01 Hz.


6. General Specifications

Power Supply

AC ( 220 ± 22 ) V,( 50 ± 2 ) Hz

Temperature Performance

Working temperature:0℃~45℃;

Storage temperature:-20℃~70℃

Humidity Performance

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

Storage humidity:(20%~80%) R·H,non-condensing

Interface

RS232


7. Ordering Information

TUNKIA TD1250 Verification Device for Earth Continuity Testers

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