1. Summary
TH0400 is a series of 14 precision coaxial shunt devices of different range. It can convert the nominal input current from 1 mA to 100 A into a small voltage of 1 V to realize wideband current measurement. It is suitable for calibrating wideband current sources, transformers, sensors, etc.
2. Features
• Operating frequency: DC ~ 100 kHz
• AC/DC difference: ≤ 30 ppm@53 Hz
• Optimum phase displacement: 5 μrad
• Nominal output voltage: 1 V (other voltage values can be customized)
• Annual variation: typical value is 5 ppm, maximum value is 18 ppm
• Can withstand the instantaneous current impact
• 1 mA, 10 mA specifications can be equipped with buffer.
3. Applications
☆ Build Wide Frequency Current Measurement System |
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| Set up wideband current measurement system with wideband current source and wideband standard voltmeter (such as TH2000 vector voltage analyzer), measure wideband current signal, and calibrate wideband current source and wideband ammeter, etc. |
☆ Build Wide Frequency Power/Energy Precision Measurement System |
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Set up wideband power/energy precision measurement system with wideband I/V conversion standard (such as TH0150 wideband voltage divider) and TH0200 vector voltage analyzer, measure wideband power/energy signal, calibrate wideband power source, wideband power meter, power analyzer and other equipment. |
☆ Build Wide Frequency Transformer/Sensor Calibration System |
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Set up a wideband transformer/sensor measurement system with a wideband constant-current source and a wideband sensor tester (such as TH2000 vector voltage analyzer) to calibrate the tested transformer or sensor with nominal current ≤ 100 A. |
☆ Build Wide Frequency Transformer/Sensor Calibration System |
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For the calibration of transformer/sensor whose nominal current is greater than 100 A, TH0400 is used as the secondary signal I/V converter of the standard and equipment under inspection, and a wideband constant current source and wideband sensor tester (such as TH2000 vector voltage analyzer) are used to build a wideband transformer/sensor measurement system. |
4. Specifications
4.1 Resistance Specification
Specification | Nominal resistance ( Ω ) | Initial deviation [1] (±μΩ/Ω ) @ (23±1)°C | Annual Stability ( ±μΩ/Ω ) | Temperature coefficient ( ppm/K ) | Power factor [2] ( ±ppm/Rated power ) |
TH0400-1mA | 1000 | 50 | 18 | 2.5 | 1 |
TH0400-10mA | 100 | 50 | 18 | 2.5 | 1 |
TH0400-20mA | 50 | 50 | 18 | 2.5 | 1 |
TH0400-50mA | 20 | 50 | 18 | 2.5 | 1 |
TH0400-100mA | 10 | 50 | 18 | 2.5 | 2 |
TH0400-200mA | 5 | 50 | 18 | 2.5 | 4 |
TH0400-500mA | 2 | 50 | 18 | 2.5 | 12 |
TH0400-1A | 1 | 50 | 18 | 4.0 | 25 |
TH0400-2A | 500 m | 50 | 18 | 4.0 | 25 |
TH0400-5A | 200 m | 50 | 18 | 4.0 | 30 |
TH0400-10A | 100 m | 50 | 18 | 4.0 | 60 |
TH0400-20A | 50 m | 50 | 18 | 4.0 | 75 |
TH0400-50A | 20 m | 50 | 18 | 4.5 | 100 |
TH0400-100A | 10 m | 50 | 18 | 4.5 | 100 |
Note [1]: The initial deviation is the maximum offset of the resistance under DC condition, usually the manufacturer's guaranteed value; Higher precision can be customized according to user requirements, such as 20 μΩ/Ω. Note [2]: When the coaxial shunt is used to measure DCI, the resistance's own heat will lead to the change of resistance value under different input currents, thus introducing the error. The calculation formula is as follows: γ= power coefficient × [1-(current measurement/nominal current value)^2] | |||||
4.2 Current Measurement
Specification | Nominal input current ( A ) | Nominal Output current ( V ) | AC/DC difference[3] ( ±ppm ) | Maximum operating current( A ) | Instantaneous current ( A, <5 s ) | ||
50 Hz | 1 kHz | 100 kHz | |||||
TH0400-1mA | 1 m | 1 | 25 | 50 | 150 | 2m | 3m |
TH0400-10mA | 10 m | 1 | 20 | 25 | 50 | 20m | 150m |
TH0400-20mA | 20 m | 1 | 20 | 25 | 50 | 40m | 250m |
TH0400-50mA | 50 m | 1 | 20 | 25 | 50 | 100m | 500m |
TH0400-100mA | 100 m | 1 | 20 | 25 | 25 | 200m | 1.5 |
TH0400-200mA | 200 m | 1 | 20 | 25 | 25 | 500m | 2 |
TH0400-500mA | 500 m | 1 | 20 | 25 | 25 | 1 | 3 |
TH0400-1A | 1 | 1 | 20 | 25 | 30 | 1.5 | 4 |
TH0400-2A | 2 | 1 | 20 | 30 | 50 | 2.5 | 6 |
TH0400-5A | 5 | 1 | 20 | 30 | 80 | 5.5 | 20 |
TH0400-10A | 10 | 1 | 20 | 30 | 100 | 11 | 30 |
TH0400-20A | 20 | 1 | 20 | 30 | 100 | 22 | 50 |
TH0400-50A | 50 | 1 | 30 | 50 | 150 | 55 | 100 |
TH0400-100A | 100 | 1 | 30 | 50 | 500 | 110 | 200 |
Note [3]: The measured value of AC current should be calculated according to the following formula, and the unit of the difference between AC and DC is ppm: Ac current measurement value =(voltage measurement value/calibration resistance value)*(1+ AC-DC difference /(1 000 000)) | |||||||
4.3 Phase Displacement
Specification | Phase Displacement ( ±μrad ) | |||||
53 Hz | 400 Hz | 1 kHz | 10 kHz | 50 kHz | 100 kHz | |
TH0400-1mA | 10 | 10 | 15 | 100 | 500 | 1000 |
TH0400-10mA | 5 | 5 | 10 | 100 | 400 | 800 |
TH0400-20mA | 5 | 5 | 10 | 100 | 400 | 800 |
TH0400-50mA | 5 | 5 | 10 | 100 | 400 | 800 |
TH0400-100mA | 5 | 5 | 10 | 60 | 300 | 500 |
TH0400-200mA | 5 | 5 | 10 | 60 | 300 | 500 |
TH0400-500mA | 5 | 5 | 10 | 60 | 300 | 500 |
TH0400-1A | 5 | 5 | 10 | 60 | 300 | 500 |
TH0400-2A | 10 | 10 | 15 | 110 | 500 | 1000 |
TH0400-5A | 10 | 15 | 25 | 200 | 1000 | 2000 |
TH0400-10A | 10 | 20 | 40 | 300 | 1500 | 3000 |
TH0400-20A | 10 | 25 | 50 | 400 | 2000 | 4000 |
TH0400-50A | 10 | 30 | 65 | 500 | 2500 | 5000 |
TH0400-100A | 20 | 40 | 80 | 600 | 3000 | 6000 |
5. General Specifications
Power supply | —— |
Temperature performance | Operating temperature: 13 °C ~ 33°C; Calibration temperature: 18°C~28°C; Storage temperature: 5°C to 45 °C Note: When stored in a harsh temperature environment, the resistance value may change temporarily and be restored to the original resistance value within the following 30 days. |
Humidity performance | Operating humidity: < 50% R·H Storage humidity :(15%~80%) R·H, no condensation |
Connection mode | Input connection: 1 mA~20 A specifications using Type-N female plug; Type-LC female plug for 50 A and 100 A specification; Output connection: All specifications use Type-N female plugs. |
Specification | Size (mm) (W * D * H) (excluding terminals) | Weight ( kg ) | Size chart |
TH0400-1mA TH0400-10mA TH0400-20mA TH0400-50mA | 90 *25 *25 | 0.1 | |
TH0400-100mA TH0400-200mA TH0400-500mA TH0400-1A TH0400-2A TH0400-5A | 110*70 *70 | 0.2 | |
TH0400-10A TH0400-20A | 180*130*130 | 1 | |
TH0400-50A TH0400-100A | 260*200*200 | 2.5 | |
6. Ordering Information
| Specification | Nominal current |
TH0400-1mA | 1 mA | |
TH0400-10mA | 10 mA | |
TH0400-20mA | 20 mA | |
TH0400-50mA | 50 mA | |
TH0400-100mA | 100 mA | |
TH0400-200mA | 200 mA | |
TH0400-500mA | 500 mA | |
TH0400-1A | 1 A | |
TH0400-2A | 2 A | |
TH0400-5A | 5 A | |
TH0400-10A | 10 A | |
TH0400-20A | 20 A | |
TH0400-50A | 50 A | |
TH0400-100A | 100 A |
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