1. Summary
TD1450 is an instrument that accurately simulates DC or AC standard resistance, and is suitable for calibrating loop resistance testers, DC resistance testers, ground on-resistance testers, and other DC or AC low impedance instrument. The instrument is also a good precision ammeter for measuring a wide range of DC or AC currents.
2. Features
• Accuracy: Class 0.02/ Class 0.05
• Maximum current measurement: 60 A (120A, 240A, 600A optional).
• DC resistance simulation: 1 μΩ ~ 200 Ω (related to current specification).
• AC resistance simulation: 30 μΩ ~ 150 Ω (dependent on current specification).
• Input current ripple or harmonic measurement function.
• Displaying the waveform of the measured current.
• Statistical analysis
• LCD touch screen
• Specialized automation testing software
3.Application
4. Characteristics
☆ Analog resistance output |
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• Higher measurement accuracy with the four-wire wiring method. • Self-calibration. |
☆ Wide range of current measurement |
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• Direct current measurement: A pair of quick terminals can be used to directly measure the AC and DC current in a wide range of 10 m A ~ 60 A. • Current conversion measurement: The instrument is equipped with a sensor-specific measurement interface, which can simultaneously supply power to the sensor and measure its secondary signal, and can be connected to a precision current sensor (such as TH0550T) and extend the current range to 100 A, 200 A, 500A and beyond. By setting the ratio of the current sensor on the instrument, the magnitude of the primary current of the measured sensor is directly displayed. |
☆ Multiple output methods |
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• The instrument has a "fixed point output" mode, through the digital button of the control panel or click the touch screen, directly set the required output value, the instrument will automatically switch to the best range output. |
☆ Multiple output methods |
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• When calibrating a resistance tester, it is usually necessary to select the calibration point according to the proportion of each range of the meter to be checked. • The user can easily select the calibration point of the inspected meter through the "Percentage Output Button" on the console of this instrument or the "Percentage Check Point" on the touch screen. |
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• The operating area is equipped with a "rotary encoder" that increases or decreases the output by rotating it clockwise or counterclockwise. |
☆ AC/DC comprehensive measurement |
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• The instrument supports DC or AC (optional) measurement mode, AC frequency range: 45 Hz ~ 65 Hz. • When measuring the current, the distortion degree and ripple can be measured synchronously. The maximum measurement bandwidth of DC ripple is 1 kHz, and the AC supports the measurement of the 2nd~32nd harmonics |
☆ DC characterization | |
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S/N | Function |
| Current overshoot: the maximum test current is displayed in DC mode, which is convenient for calculating the working current overshoot; |
| Waveform display: With oscilloscope function, the waveform of the measured current can be displayed in real time. |
| Ripple measurement: the instrument directly displays the ripple measurement results on the screen, which is convenient for users to read. |
☆ AC characterization | |
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S/N | Function |
| Harmonic distortion: The instrument directly calculates two types of harmonic distortion, THD/T (harmonics relative to full wave) and THD/F (harmonics relative to fundamental waves). |
| Harmonic data: display the amplitude (RMS), content (%) and phase of the 2nd~32nd harmonics. |
| DC component: display the DC component in the AC current signal. |
| Waveform display: With waveform display function, the waveform of the measured current can be displayed in real time. |
☆ Statistical analysis of test data | |
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S/N | Function |
| Integration period: The integration period can be set in the range of 0.5 s ~ 20 s (default 1s), which is convenient for users to set sampling data according to actual needs; |
| Statistical analysis: Real-time recording and statistical test data, including current Max, Min, Avg, Span, Stab, S. dev, Time, test times N, etc. |
☆ Rich communication interface and special test software |
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| • RS232, USB, LAN interfaces. |
5. Technical Specifications
5.1 DC current measurement DCI
Range | Resolution | Measurement uncertainty ( k=2 ). ( ppm*RD + ppm*RG ) [1] | Temperature coefficient @ ( 15 ~ 30 ) °C ( ppm*RG/℃ ) | ||
Class 0.05 | Class 0.02 | Class 0.05 | Class 0.02 | ||
100 mA | 1 μA | 200 + 200 | 100 + 100 | 10 | 4 |
200 mA | 1 μA | 200 + 100 | 100 + 50 | 10 | 4 |
500 mA | 1 μA | 200 + 100 | 100 + 50 | 10 | 4 |
1 A | 10 μA | 200 + 100 | 100 + 50 | 10 | 4 |
2 A | 10 μA | 200 + 100 | 100 + 50 | 10 | 4 |
5 A | 10 μA | 200 + 100 | 100 + 50 | 10 | 4 |
10 A | 100 μA | 200 + 100 | 100 + 50 | 10 | 4 |
20 A | 100 μA | 200 + 100 | 100 + 50 | 10 | 4 |
50 A | 100 μA | 200 + 100 | 100 + 50 | 10 | 4 |
100 A [2] | 1 mA | 200 + 100 | 100 + 50 | 10 | 4 |
200 A [2] | 1 mA | 200 + 100 | 100 + 50 | 10 | 4 |
500 A [2] | 1 mA | 200 + 100 | 100 + 50 | 10 | 4 |
Note [1]: RD is the reading value, RG is the range value; [2] : 100 A, 200 A, 5 00 A range is optional, and the TH0550T through-core AC/DC current sensor must be selected to the appropriate specifications | |||||
• Measuring range (TD1450-X-50 A, maximum capacity: 50 A): 10 m A ~ 60 A
Measuring range (TD1450-X-100 A, maximum range: 100 A): 10 mA ~ 120 A
Measuring range (TD1450-X-200 A, maximum range: 200 A): 10 mA ~ 240 A
Measuring range (TD1450-X-500 A, maximum range: 500 A): 10 mA ~ 600 A
• Display digits: 6-digit decimal display
• Ripple measurement band: 1 Hz ~ 1 kHz, measurement uncertainty (k=2): 0.02%*RG, rms
• Input protection: can withstand 2 times the rated current and 5 s overload
5.2 AC current measurement ACI
Range | Resolution | Measurement uncertainty ( k=2 ). ( ppm*RD + ppm*RG ) [1] | Temperature coefficient @ ( 15~30 )°C ( ppm*RG/℃ ) | ||
Class 0.05 | Class 0.02 | Class 0.05 | Class 0.02 | ||
100 mA | 1 μA | 500 + 500 | 300 + 200 | 20 | 10 |
200 mA | 1 μA | 500 + 500 | 300 + 200 | 20 | 10 |
500 mA | 1 μA | 500 + 500 | 300 + 200 | 20 | 10 |
1 A | 10 μA | 500 + 500 | 300 + 200 | 20 | 10 |
2 A | 10 μA | 500 + 500 | 300 + 200 | 20 | 10 |
5 A | 10 μA | 500 + 500 | 300 + 200 | 20 | 10 |
10 A | 100 μA | 500 + 500 | 300 + 200 | 20 | 10 |
20 A | 100 μA | 500 + 500 | 300 + 200 | 20 | 10 |
50 A | 100 μA | 500 + 500 | 300 + 200 | 20 | 10 |
100 A [2] | 1 mA | 500 + 500 | 300 + 200 | 20 | 10 |
200 A [2] | 1 mA | 500 + 500 | 300 + 200 | 20 | 10 |
500 A [2] | 1 mA | 500 + 500 | 300 + 200 | 20 | 10 |
Note [1]: RD is the reading value, RG is the range value; [2] : 100 A, 200 A, 500 A range is optional, and the TH 0550 T through-core AC/DC current sensor must be selected | |||||
• Measuring range (TD145 0-X-50 A-B size, maximum capacity: 50 A): 10 mA ~ 60 A
Measuring range (TD145 0-X-100 A-B size, maximum capacity: 100 A): 10 mA ~ 120 A
Measuring range (TD145 0-X-200 A-B size, maximum capacity: 200 A): 10 mA ~ 240 A
Measuring range (TD145 0-X-500 A-B size, maximum capacity: 500 A): 10 mA ~ 600 A
• Display digits: 6-digit decimal display
• AC frequency: 45 Hz ~ 65 Hz, measurement uncertainty (k=2): 0.01 Hz, harmonic measurement: 2nd ~ 32nd times
• Input protection: can withstand 2 times the rated current and 5 s overload
5.3 DC resistance simulation
Current range | The setting range of the resistance value R | Adjust the fineness | Measurement uncertainty (k=2, ppm*RD+R0) [1]. | |
Class 0.05 | Class 0.02 | |||
500 A [2] | 1 μΩ ≤ R ≤ 400 μΩ | 2 nΩ | 500 + 20 nΩ | 200 + 10 nΩ |
400 μΩ < R ≤ 4 mΩ | 20 nΩ | 500 | 200 | |
4 mΩ < R ≤ 40 mΩ | 200 nΩ | 500 | 200 | |
200 A [2] | 3 μΩ ≤ R ≤ 1 mΩ | 10 nΩ | 500 + 30 nΩ | 200 + 20 nΩ |
1 mΩ < R ≤ 10 mΩ | 100 nΩ | 500 | 200 | |
10 mΩ < R ≤ 100 mΩ | 1 mΩ | 500 | 200 | |
100 A [2] | 5 mH ≤ R ≤ 2 mΩ | 10 nΩ | 500 + 60 nΩ | 200 + 40 nΩ |
2 mΩ < R ≤ 20 mΩ | 100 nΩ | 500 | 200 | |
20 mΩ < R ≤ 200 mΩ | 1 mΩ | 500 | 200 | |
50 A | 10 mΩ ≤ R ≤ 4 mΩ | 20 nΩ | 500 + 120 nΩ | 200 + 80 nΩ |
4 mΩ < R ≤ 40 mΩ | 200 nΩ | 500 | 200 | |
40 mΩ < R ≤ 400 mΩ | 2 mΩ | 500 | 200 | |
20 A | 30 mΩ ≤ R ≤ 10 mΩ | 100 nΩ | 500 + 0.3 mΩ | 200 + 0.2 mΩ |
10 mΩ < R ≤ 100 mΩ | 1 mΩ | 500 | 200 | |
100 mΩ < R ≤ 1 Ω | 10 mΩ | 500 | 200 | |
10 A | 50 mH ≤ R ≤ 20 mΩ | 100 nΩ | 500 + 0.6 mΩ | 200 + 0.4 μΩ |
20 mΩ < R ≤ 200 mΩ | 1 mΩ | 500 | 200 | |
200 mΩ < R ≤ 2 Ω | 10 mΩ | 500 | 200 | |
5 A | 100 μΩ ≤ R ≤ 40 mΩ | 200 nΩ | 500 + 1.2 mΩ | 200 + 0.8 mΩ |
40 mΩ < R ≤ 400 mΩ | 2 mΩ | 500 | 200 | |
400 mΩ < R ≤ 4 Ω | 20 mΩ | 500 | 200 | |
2 A | 300 μΩ ≤ R ≤ 100 mΩ | 1 mΩ | 500 + 3 mΩ | 200+ 2 mΩ |
100 mΩ < R ≤ 1 Ω | 10 mΩ | 500 | 200 | |
1 Ω < R ≤ 10 Ω | 100 mΩ | 500 | 200 | |
1 A | 500 μΩ ≤ R ≤ 200 mΩ | 1 mΩ | 500 + 6 mΩ | 200 + 4 mΩ |
200 mΩ < R ≤ 2 Ω | 10 mΩ | 500 | 200 | |
2 Ω < R ≤ 20 Ω | 100 mΩ | 500 | 200 | |
500 mA | 1 m Ω ≤ R ≤ 400 mΩ | 2 mΩ | 500 + 12 mΩ | 200 + 8 mΩ |
400 mΩ < R ≤ 4 Ω | 20 mΩ | 500 | 200 | |
4 Ω < R ≤ 40 Ω | 200 mΩ | 500 | 200 | |
200 mA | 3 m Ω ≤ R ≤ 1 Ω | 10 mΩ | 500 + 30 mΩ | 200 + 20 mΩ |
1 Ω < R ≤ 10 Ω | 100 mΩ | 500 | 200 | |
10 Ω < R ≤ 100 Ω | 1 mΩ | 500 | 200 | |
1,00 mA | 5 m Ω ≤ R ≤ 2 Ω | 10 mΩ | 500 + 60 mΩ | 200 + 50 mΩ |
2 Ω < R ≤ 20 Ω | 100 mΩ | 500 | 200 | |
20 Ω < R ≤ 200 Ω | 1 mΩ | 500 | 200 | |
Note [1]: RD is the reading value, RG is the range value; [2]: 100 A, 200 A, 500 A range is optional, and the TH 0550T through-core AC/DC current sensor must be selected. | ||||
• Resistance analog range (TD145 0-X-50 A specification, maximum range: 50 A): 10 μΩ ~ 200 Ω
Resistance analog range (TD145 0-X-100 A, maximum range: 100 A) ：5 μΩ ~ 200 Ω
Resistance analog range (TD145 0-X-200 A, maximum range: 200 A): 3 μΩ ~ 200 Ω
Resistance analog range (TD145 0-X-500 A, maximum range: 500 A): 1 μΩ ~ 200 Ω
• Display digits: 6-digit decimal display, set the resistance value through the number keys.
5.4 AC resistance simulation
Current range | The setting range of the resistance value R | Adjust the fineness | Measurement uncertainty ( k=2, ppm*RD + R0 ) [1]. | |
Class 0.05 | Class 0.02 | |||
500 A [2] | 30 μΩ ≤ R ≤ 300 μΩ | 2 nΩ | 1000 + 0.2 μΩ | 500 + 0.1 mΩ |
300 μΩ < R ≤ 3 mΩ | 20 nΩ | 1000 | 500 | |
3 mΩ < R ≤ 30 mΩ | 200 nΩ | 1000 | 500 | |
200 A [2] | 75 mΩ ≤ R ≤ 750 μΩ | 10 nΩ | 1000 + 0.4 μΩ | 500 + 0.2 mΩ |
750 μΩ< R ≤ 7.5 mΩ | 100 nΩ | 1000 | 500 | |
7.5 mΩ < R ≤ 75 mΩ | 1mΩ | 1000 | 500 | |
100 A [2] | 150 mΩ ≤ R ≤ 1.5 mΩ | 10 nΩ | 1000 + 1 mΩ | 500 + 0.5 mΩ |
1.5 mΩ < R ≤ 15 mΩ | 100 nΩ | 1000 | 500 | |
15 mΩ < R ≤ 150 mΩ | 1 mΩ | 1000 | 500 | |
50 A | 300 mΩ ≤ R ≤ 3 mΩ | 20 nΩ | 1000 + 2 μΩ | 500 + 1 mΩ |
3 mΩ < R ≤ 30 mΩ | 200 nΩ | 1000 | 500 | |
30 mΩ < R ≤ 300 mΩ | 2 mΩ | 1000 | 500 | |
20 A | 750 mΩ ≤ R ≤ 7.5 mΩ | 100 nΩ | 1000 + 4 μΩ | 500 + 2 mΩ |
7.5 mΩ < R ≤ 75 mΩ | 1 mΩ | 1000 | 500 | |
75 mΩ < R ≤ 750 mΩ | 10 mΩ | 1000 | 500 | |
10 A | 1.5 mΩ ≤ R ≤ 15 mΩ | 100 nΩ | 1000 + 10 μΩ | 500 + 5 mΩ |
15 mΩ < R ≤ 150 mΩ | 1 mΩ | 1000 | 500 | |
150 mΩ < R ≤ 1.5 Ω | 10 mΩ | 1000 | 500 | |
5 A | 3 mΩ ≤ R ≤ 30 mΩ | 200 nΩ | 1000 + 20 μΩ | 500 + 10 mΩ |
30 mΩ < R ≤ 300 mΩ | 2 mΩ | 1000 | 500 | |
300 mΩ < R ≤ 3 Ω | 20 mΩ | 1000 | 500 | |
2 A | 7.5 mΩ ≤ R ≤ 75 mΩ | 1 mΩ | 1000 + 40 mΩ | 500 + 20 mΩ |
75 mΩ < R ≤ 750 mΩ | 10 mΩ | 1000 | 500 | |
750 mΩ < R ≤ 7.5 Ω | 100 mΩ | 1000 | 500 | |
1 A | 15 mΩ ≤ R ≤ 150 mΩ | 1 mΩ | 1000 + 100 μΩ | 500 + 50 mΩ |
150 mΩ < R ≤ 1.5 Ω | 10 mΩ | 1000 | 500 | |
1.5 Ω < R ≤ 15 Ω | 100 mΩ | 1000 | 500 | |
500 mA | 30 mΩ ≤ R ≤ 300 mΩ | 2 mΩ | 1000 + 200 μΩ | 500 + 100 mΩ |
300 mΩ < R ≤ 3 Ω | 20 mΩ | 1000 | 500 | |
3 Ω < R ≤ 30 Ω | 200 mΩ | 1000 | 500 | |
200 mA | 75 mΩ ≤ R ≤ 750 mΩ | 10 mΩ | 1000 + 400 μΩ | 500 + 200 mΩ |
750 mΩ < R ≤ 7.5 Ω | 100 mΩ | 1000 | 500 | |
7.5 Ω < R ≤ 75 Ω | 1 mΩ | 1000 | 500 | |
100 mA | 75 mΩ ≤ R ≤ 1.5 Ω | 10 mΩ | 1000 + 1000 μΩ | 500 + 500 μΩ |
1.5 Ω < R ≤ 15 Ω | 100 mΩ | 1000 | 500 | |
15 Ω < R ≤ 150 Ω | 1 mΩ | 1000 | 500 | |
Note [1]: RD is the reading value, RG is the range value; [2] : 100 A, 200 A, 5 00 A range is optional, and the TH 0550 T through-core AC/DC current sensor must be selected. | ||||
• Resistance analog range (TD1450-X-50 A-B specification, maximum range: 50 A): 300 μΩ ~ 150 Ω
Resistance analog range (TD1450-X-100 A-B specification, maximum range: 100 A): 150 μΩ ~ 150 Ω
Resistance analog range (TD1450-X-200 A-B specification, maximum capacity: 200 A): 75 μΩ ~ 150 Ω
Resistance analog range (TD1450-X-500 A-B specification, maximum range: 500 A): 30 μΩ ~ 150 Ω
• Display digits: 6-digit decimal display, set the resistance value through the number keys.
6. General Specifications
Power supply | AC ( 220 ± 22 )V，( 50 ± 2 )Hz |
Maximum power consumption | 100 VA |
Warm-up time | ≥ 30 min |
Temperature performance | Working temperature: 18°C ~ 28°C; Storage temperature: -20°C ~ 70°C. |
Humidity performance | Operating humidity: ( 40% ~ 80% ) R·H, no condensation Storage humidity: <80% R·H, no condensation |
Communication interface | LAN、USB、RS232 |
Quality | Approx 12.5 kg |
Size | 400 mm (W) X 300 mm (D) X 190 mm (H) (excluding handlebars and feet). |
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7. Ordering Information
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