SeeweTek Soft Magnetic Material AC Testing System can automatically measure AC magnetic parameters of soft magnetic materials such as FeSiAl, FeAl, soft ferrite, permalloy, amorphous/nanocrystalline, and silicon steel under continuous frequencies from 10 Hz to 3 MHz: Ps, Bm, Hm, Ss, μa, δ, Br, and Hc. It can also calculate dynamic magnetic parameters such as μ′, μ″, μL, μR, Q, and AL under specific conditions.
The testing system uses digital signal synthesis and processing technology, consisting of a high-speed broadband bipolar power amplifier, a high-precision broadband power analyzer, an automatic power adjustment module, and an industrial computer to form an automatic testing system. It is equipped with dedicated measurement software to realize various complex magnetic property tests and data management.
The soft magnetic material AC testing system is equipped with an automatic power adjustment module, with a maximum excitation power of up to 500 VA, achieving wide bandwidth and high power, effectively solving the problems of high sample preparation requirements and narrow test range under high-frequency conditions.
The system design complies with standards such as GB/T3658-2008, GB/T19346.1-2017, SJ20966-2006, and IEC60404-6.
Test Items
- Sample types: Can test amorphous/nanocrystalline, silicon steel, permalloy, metal powder cores, and soft ferrite, etc.
- Sample shape: Measure closed-circuit samples such as toroidal, rectangular, EE, and EI shapes by directly winding excitation (N1) and sensing (N2) coils on the sample.
- Test parameters: Measure dynamic magnetic parameters of soft magnetic materials under continuous frequencies from 10 Hz to 3 MHz, accurately measure μa, δ, Ps, Br, and Hc, and calculate dynamic magnetic parameters such as μ′, μ″, μL, μR, Q, and AL under specific conditions.
Equipment Features
- Computer-controlled digital power supply and standard power meter, the entire test process is automated.
- The test sample has a closed magnetic circuit structure, with coils wound directly on the sample; the sample, magnetizing coil (N1), and measuring coil (N2) together form an unloaded transformer.
- The magnetizing coil circuit is connected in series with the current terminal of the standard power meter, and the peak magnetic field is obtained by reading the peak current of the power meter.
- The measuring coil is connected to the voltage input terminal of the standard power meter, and the peak magnetic induction is calculated by reading the RMS voltage of the power meter.
- Using automatic power adjustment technology, the maximum excitation power can reach 500 VA, achieving wide bandwidth and high power, effectively solving the problems of high sample preparation requirements and narrow test range under high-frequency conditions.
- Using volt-ampere method and digital integration method to measure dynamic hysteresis loop, specific total loss Ps, magnetic induction Bm, magnetic field strength Hm, specific apparent power Ss, amplitude permeability μa, loss angle δ, remanence Br, and coercivity Hc, and calculate μ′, μ″, μL, μR, Q, and AL under specific conditions.
