TUNKIA TK1320 Automatic Current Sensor Current Transformer Calibration System Comprehensive test bench with Software

Product Description

TK1320 Current Sensor Comprehensive Testing Device

(The picture is for reference only, the actual product will be subject to delivery)

1. Summary

TK1320 is a multifunctional device designed for testing the comprehensive performance of current sensors. It mainly consists of a DC high-current standard source, a high-frequency constant current source, a pulse current source, a sensor output quantity tester, and dedicated testing software. This device can conduct metrological performance testing, frequency response bandwidth measurement, and response time measurement for current sensors. When combined with specialized testing software, it can automate multiple testing procedures.

 

2. Feature

1. Metrology Performance Testing: High-current standard source and sensor output quantity tester.
2. Frequency response bandwidth measurement: high-frequency current source + digital multimeter.
3. Response time measurement: pulse current source + pulse shunt + multi-channel oscilloscope.
4. Sensor auxiliary power supply and power consumption measurement.
5. Mobile measurement and control console
6. Multiple test positions (customizable)
7. Special testing software

3. Application

☆ Metrology Performance Testing (Direct Measurement Method)

1. Direct Measurement Method: The high current standard source of TK1320 outputs the primary current standard source I₁ to the current sensor under test, and its secondary signal is measured by the sensor output power tester, that is, the ratio difference (or phase displacement) of the sensor under test can be calculated. This method is suitable for testing medium and low precision current sensors.
2. High Current Standard Source: DC high current standard source can be configured according to user needs. The current output range is 300 A ~ 5 kA. The accuracy level can reach Class 0.02.
3. Sensor Output Power Tester: voltage measurement range ±(10 mV ~ 12 V), current measurement range ±(1 mA ~ 1.1 A), DC measurement accuracy reaches 0.005 level.
4. Sensor Auxiliary Power Supply: adjustable within the range of DC ±(5.0 V ~ 50.0 V).
5. Multiple Test Positions (optional): To test multiple current sensors at the same time, multiple sets of sensor output power testers and auxiliary power supplies need to be configured at the same time.
6. Special Test Software: Users can customize the test plan to complete test items including zero-point output error, full-scale output error, linearity error, hysteresis (hysteresis), repeatability error and accuracy, etc., and edit the test points of each item to achieve Automatic detection of current sensor metering performance.

 

☆ Frequency Response Bandwidth Measurement

1. Use a high-frequency constant current source with a standard digital multimeter to measure the frequency response bandwidth of the current sensor. If the sensor being tested is a current output type, a high-frequency coaxial shunt must be used to convert the secondary current I₂ into a voltage signal U₂ before connecting the digital multimeter to measure.
2. High Frequency Constant Current Source: 1 mA ~ 10 A, DC ~ 1 MHz, stability 0.1%/min @ 1 MHz.
3. Digital multimeter: A 6.5 digits (300 kHz) or 8.5 digits (1 MHz) digital multimeter can be selected according to the bandwidth of the sensor being tested.
4. High Frequency Coaxial Shunt: nominal input current 100 mA, 1 A, nominal output voltage 1 V, frequency DC ~ 1 MHz, annual stability 18 ppm, AC/DC difference 30 ppm @ 1 MHz.
5. Low Current Three-Way (Optional): It is convenient to connect two current sensors to be tested at the same time to achieve simultaneous detection and improve test efficiency.

 

☆ Response Time Measurement

1. A pulse current source is used, combined with a standard pulse shunt and a multi-channel oscilloscope, to measure the response time of the current sensor. The pulse current is connected to the standard pulse shunt and the current sensor under test, and then the secondary output signal waveforms of the two are viewed on the oscilloscope. And the rise time of the current sensor under test is compared to calculate the response time.
2. Pulse Current Source: current amplitude 500 A, rise time 10 μs, accuracy class 0.5.
3. Standard Pulse Shunt: test current 500 A, response time < 10 ns.
4. Multi-Channel Oscilloscope (optional): measurement channels ≥2, measurement bandwidth ≥ 100 MHz.
5. Through-Core Current Sensor Test Fixture (optional): current specification 500 A, multiple test locations, low inductance coaxial structure.

4. Specifications

4.1 DC High Current Standard Source

Current Output Range	300 A ~ 5 kA
Maximum Load Voltage	3.5 V
Accuracy	Class 0.02
Annual Measurement Uncertainty(k=2)	0.015 %*RG+0.005 %*RD
Programmed Commutation	external commutator
Ripple Coefficient	≤ 0.5 %
Current Overshoot	≤ 10 %
Protective Function	open circuit protection, overload protection, overheating protection

 

4.2 Sensor Output Power Tester

Voltage measurement range	100 mV,1 V,10 V,manual or automatic range switching
	±(10 mV ~ 12 V)
Current  Measurement Range	10 mA,100 mA,1 A,manual or automatic range switching
	±(1 mA ~ 1.1 A)
Measurement Uncertainty (k=2)	DC: 0.003%*RD + 0.002%*RG
Display Digits	7 decimal digits
Temperature Coefficient	0.5 ppm/°C @ (0°C~40°C)
Number of test positions	Multiple measurement channels can be provided according to the number of test positions

4.3 Sensor Auxiliary Power Supply and Power Consumption Measurement

Supply Voltage	DC ±(5.0 V~50.0 V) adjustable
Maximum Load Capacity	1 A
Power Consumption Measurement Accuracy	Class 0.5
Protective Function	open circuit protection, overload protection, overheating protection
Number of Test Positions	Multiple auxiliary power supplies and power consumption measurement channels can be provided according to the number of test positions.
AC Power Supply	AC 220 V power supply can be added according to user needs

 

4.4 High Frequency Constant Current Source

Current Output Range	1 mA ~ 10.5 A
Frequency Range	DC,10 Hz ~ 1 MHz
Short Term Stability	DC: 0.005%/min AC: 0.01%/min @ 10 kHz,0.05%/min @ 100kHz,0.1%/min@1MHz
Measurement Uncertainty(k=2)	DC: 0.02% AC: 0.08% @ 10 kHz,0.5% @ 100 kHz
Maximum Load Voltage	7 Vrms

 

4.5 Pulse Current Source

Current Output Range	500 A
Pulse Type	Unipolar pulse
Measurement Uncertainty(k=2)	0.5%
Repeat Frequency	10 Hz ~ 1 kHz
Pulse Width	1 ms ~ 100 ms,Adjustment step 0.1 ms
Rise/Fall Rate	50 A/μs
Maximum Load Voltage	9 Vpk

5. General Specifications

Warm-up Time	30 minutes
Working Environment	Temperature: 0°C ~ 40°C Humidity: 20%R·H ~ 85%R·H, no condensation. Others: No electromagnetic field interference.
Storage Environment	Temperature: -20°C ~ 70°C Humidity: 10%R·H ~ 95%R·H, no condensation.
Communication Interface	RS232×1

 

6. Power Supply Requirements

S/N	Device Name	Power supply type	Maximum power consumption
1	DC High Current Standard Source	three phase five wire AC 380 V ± 38 V 50 Hz ± 2 Hz	4 kW per 1 kA current source
2	Sensor Output Power Tester		0.1 kW/set
3	Sensor Auxiliary Power Supply And Power Consumption Measurement Module		0.2 kW/set
4	Pulse Current Source		6 kW
5	High Frequency Constant Current Source	AC 220 V ± 2 V 50 Hz ± 2 Hz	0.5 kW

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