Publish Time: 2026-08-21 Origin: Site
Electrical safety testing is essential for verifying the safety and reliability of electrical and electronic products. During production, quality inspection, and laboratory testing, instruments such as leakage current testers, withstand voltage testers, insulation resistance testers, and earth continuity testers are widely used to evaluate electrical safety performance.
To ensure the accuracy and reliability of these testing instruments, regular verification and calibration are essential. TUNKIA provides a comprehensive range of electrical safety tester verification and calibration solutions, covering leakage current, high voltage and high resistance, withstand voltage, and earth continuity testing.
With high-accuracy standard sources, measurement functions, and dedicated verification accessories, TUNKIA's solutions help metrology laboratories, manufacturers, testing institutions, and electrical safety equipment users establish reliable and efficient calibration workflows.
The TD1210 Verification Device for Leakage Current Testers integrates a wideband constant current standard source, constant voltage standard source, DC resistance meter, impedance tester, and AC voltage standard meter. With a frequency range from DC to 1 MHz, it is designed for the calibration and verification of conventional leakage current testers, touch current testers, and medical leakage current testers.
Key Specifications
Constant Current Output: 50 μA to 55 mA
Constant Voltage Output: 30 mV to 31 V
Frequency Range: DC to 1 MHz
The integrated design enables multiple verification functions to be performed with a single instrument, improving testing efficiency and simplifying laboratory setups.
The TD1210A Leakage Current Tester Verification Device is designed in accordance with JJG 843-2022 Leakage Current Tester and JJG 1188-2022 Medical Leakage Current Testers. TUNKIA participated in the drafting of both regulations.
The TD1210A integrates a wideband constant current standard source, constant voltage standard source, DC resistance meter, impedance tester, and AC voltage standard meter. A single device can perform verification of conventional leakage current testers, touch current testers, and medical leakage current testers.
Key Specifications
Wideband Constant Current Output: 2 μA to 21 mA
Wideband Constant Voltage Output: 0.5 V to 25 V
Current Source Frequency: DC, 10 Hz to 3 kHz
Voltage Source Frequency: DC, 10 Hz to 1 MHz
Compact and Lightweight: Easy to carry and suitable for flexible testing environments
Its compact design makes the TD1210A particularly suitable for laboratories and users who require a portable solution for leakage current tester verification.
The TD1220 Verification Device for DC High Voltage & High Resistance is designed for the verification and calibration of DC high-voltage and high-resistance measuring instruments. It can be used with equipment such as high-voltage resistance boxes, DC high-voltage meters, and insulation resistance tester verification devices.
Key Specifications
DC High-Voltage Output: 0 to 10 kV
DC Small-Current Output: 0 to 50 mA
DC Resistance Measurement: 100 Ω to 2 TΩ, up to 10 TΩ as an option
Accuracy Class: 0.03
By integrating high-voltage output, low-current output, and high-resistance measurement capabilities, the TD1220 provides a comprehensive solution for high-voltage and high-resistance verification applications.
The TD1230 Verification Device for Withstand Voltage Testers is based on TUNKIA's Integrated Precision Measurement Architecture (IPMA). It is designed for the calibration and verification of AC/DC withstand voltage testers with Class 1, Class 2, and lower accuracy requirements.
The TD1230 can also be used to calibrate the withstand voltage testing function of electrical safety multifunction testers and insulation withstand voltage testers.
Key Specifications
Accuracy Class: 0.5 / 0.2 (optional)
AC/DC Voltage Range: 100 V to 5 kV / 10 kV / 15 kV / 30 kV
AC/DC Current Range: 0.1 mA to 500 mA
With its wide voltage and current ranges, the TD1230 provides an efficient solution for the verification of a wide variety of withstand voltage testing instruments.
The TD1240 Verification Load Bank for Withstand Voltage Testers is a resistive load bank designed to work together with the TD1230 for the verification of withstand voltage testers.
The TD1240 features 14 sets of fixed resistance, with a rated voltage of up to 15 kV, rated current of 200 mA, and maximum load power of 500 VA.
In addition to withstand voltage tester verification, the TD1240 can also be used to verify breakdown alarm current and leakage current, providing additional flexibility for electrical safety testing applications.
Combined with the TD1230, the TD1240 provides a practical and flexible solution for comprehensive withstand voltage tester verification.
The TD1250 Verification Device for Earth Continuity Testers is designed to accurately simulate AC and DC standard resistance for the verification of earth continuity testers, grounding resistance testers, and other AC/DC low-resistance measuring instruments.
In addition to resistance simulation, the TD1250 can also function as a precision AC/DC ammeter. It supports various verification tasks, including maximum permissible error, alarm setting error, and test current setting error, according to relevant standards.
Key Specifications
Accuracy Class: 0.02, 0.05, 0.1
AC/DC Resistance Simulation: 10 μΩ to 60 Ω
AC/DC Current Measurement: 0.5 A to 60 A
With both resistance simulation and current measurement capabilities, the TD1250 provides a versatile solution for earth continuity and low-resistance tester verification.
From leakage current and touch current testing to withstand voltage, high resistance, insulation resistance, and earth continuity testing, TUNKIA provides a comprehensive portfolio of verification equipment for electrical safety testing instruments.
By combining high-accuracy standard sources, wide measurement ranges, integrated functions, and dedicated verification accessories, TUNKIA helps laboratories, manufacturers, and testing institutions improve the accuracy, efficiency, and reliability of electrical safety tester calibration and verification.
As electrical safety requirements continue to evolve, TUNKIA remains committed to developing high-precision measurement and calibration technologies that support safer electrical products and more reliable testing systems worldwide.
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