Gester Instruments | Professional Textile, Footwear and PPE Testing Equipments Manufacturers Since 1997
How to check the electric meter of the impact testing machine
Impact testing machines are generally used for large-scale textile testing. The requirements are relatively strict. The electric meter is very important. If there is a problem, it will affect the overall operation. For this reason, you need to know how to check on site to ensure Able to operate normally. 1. Measuring line voltage: textile instrument manufacturers introduce the use of a multimeter to measure the line voltage between the voltage terminals of the impact test electromechanical meter. Normally, Uabu003dUbcu003dUcau003d100V (generally the actual primary voltage is higher than the rated voltage, and the secondary voltage is also slightly Higher than 100V) If the measured result is Uabu003d0, Ubcu003dUcau003d100V, then the A phase voltage is disconnected, Uabu003dUbcu003d50V, Ucau003d100V, then the B phase voltage is disconnected, Uabu003dUcau003d 100V, Ubcu003d0, it means that the phase C voltage is disconnected. 2. Disconnect B-phase voltage method: When the load is stable and the wiring is correct, disconnect the B-phase voltage of the meter. At this time, the voltage that the meter voltage coil bears is half of the rated voltage, so the meter still rotates forward and the speed is reduced by half. If the meter does not slow down by half after disconnecting the B-phase voltage, it means that the wiring is definitely wrong, and vice versa. 3. Correct the wiring: After checking the wrong wiring, the wiring should be changed to the normal wiring of the positive phase sequence, that is, the B-phase voltage is connected to the middle voltage terminal button of the meter, the A-phase component is added with the line voltage Uab and the current Ia, and the C-phase component is added. Line voltage Ucb and current Ic. 4. Textile instrument manufacturers introduce the error detection of the impact test electromechanical meter: the error detection is basically the same as the three-phase four-wire meter. In the approximation method, if it is directly connected to the secondary circuit, Ki takes 1 to calculate: if the current and voltage are matched The primary current and voltage displayed on the electric screen need to be converted to the secondary current and voltage calculation.
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Cut resistance is one of the most critical performance indicators in personal protective equipment (PPE) testing, directly affecting worker safety in high-risk industries such as metal processing, machinery manufacturing, and emergency rescue. The TDM Cut Test Machine GT-KC28 plays a vital role in accurately evaluating the cut resistance of PPE products, including gloves, protective clothing, footwear materials, composite materials, rubber, and industrial textiles.
By adopting high-precision force control systems, intelligent data processing, and stable transmission technology, the GT-KC28 TDM Cut Tester can accurately measure the critical cutting force of materials and ensure excellent repeatability and comparability of test results. Its user-friendly touch-screen operation, comprehensive data storage, USB data export, and built-in thermal printer greatly improve laboratory efficiency and data traceability.
The TDM Cut Test Machine GT-KC28 fully complies with major international and national standards such as ISO 13997, EN 388, ASTM F2992/F2992M, ANSI/ISEA 105, and GB 24541-2022, making it a reliable solution for PPE manufacturers, third-party testing laboratories, and research institutions. Through precise and standardized cut resistance testing, the GT-KC28 helps reduce industrial cutting injuries, supports PPE certification across global markets, and ensures that protective equipment delivers reliable safety performance in real-world applications.
Ball Burst Method (ASTM D3787): Steel ball penetration for textiles/films using testers like GT-C02-2.
Hydraulic Method (ISO 13938.1): Fluid pressure on rubber diaphragm for industrial fabrics via GT-C12A.
Pneumatic Method (ISO 13938.2): Compressed air for breathable materials tested with GT-C12B.
Results are influenced by raw materials, yarn properties,
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