Current Transformer Core

Permalloy refers to an iron-nickel alloy with a wide range of nickel content, ranging from 35% to 90%. The biggest feature of Permalloy is its high magnetic permeability in weak magnetic fields. Their saturation magnetic induction intensity is generally between 0.6-1.0T.

China's Permalloy grade is 1JXX, where J means "precision alloy", "1" means soft magnetic, followed by a number for the serial number, usually indicates the nickel content of the alloy. For example, 1J50, 1J851 and so on. Perm alloy has high permeability, so it is often used in the core of medium and high frequency transformers or devices with strict requirements for sensitivity, such as high frequency (tens of kHz) switching power transformers, precision transformers, leakage switching inductors, magnetic shielding, yokes and so on.

Various sizes of toroidal cores are widely used in electronic equipment such as 50Hz, 400Hz transformers, inductors, chokes, chokes and other electromagnetic components.

The company specialises in the production of soft magnetic materials such as silicon steel sheet, permalloy, amorphous, ultra-microcrystalline, etc. Transformer cores, coiled cores The types of cores include toroidal cores, R-type cores, O-type cores, C-type cores, super-silicon steel cores, electric power coiled cores and shaped cores.

The company specialises in the production of soft magnetic materials such as silicon steel sheet, pomo alloy, amorphous, ultra-microcrystalline, etc. Transformer cores, coiled cores The types of cores include toroidal cores, R-type cores, O-type cores, C-type cores, super-silicon steel cores, electric power coiled cores and shaped cores.

The silicon steel core are suitable for the application in weak magnetic field, can be used for manufacturing high sensitivity and small power transformer, low power magnetic amplifier, relay, head of magnetic recording device, zero sequence current transformer, power converter, precision current transformer, magnetic amplifier, power transformer, choke, pulse transformer, change polarity pulse transformer, DC voltage converter, magnetic modulator, constant inductance element, unipolar pulse transformer, magnetic shielding, and so on.

Permalloys often refer to iron-nickel alloys with a nickel content in the range of 30 to 90%. It is a very widely used soft magnetic alloy. The saturation magnetic induction strength is slightly lower than that of silicon steel, but the permeability is much higher than that of silicon steel, and the iron loss is also lower than that of silicon steel, making it a very good core material.

Permalloy can be divided into 4 categories according to composition: 35%~40% Ni-Fe alloy, 45%~50% Ni-Fe alloy, 50%~65% Ni-Fe alloy and 70%~81% Ni-Fe alloy . Each type can be made into materials with circular hysteresis loop, rectangular hysteresis loop or flat hysteresis loop.

The iron core made of nanocrystalline ribbon has high magnetic permeability and low coercivity. It is especially sensitive to leakage current in the initial stage of magnetization. The leakage switch made with this iron core has a small operating current. At the same time, it has good resistance to high current impact. Because the nanocrystal um is an order of magnitude higher than that of permalloy and has high sensitivity, the number of primary winding turns can be reduced for leakage switches that require the same sensitivity, thereby reducing the volume of the leakage switch accordingly. It not only saves costs but also meets technical requirements.

Amorphous alloy current transformer uses amorphous alloy material as the core material, which better solves the problems existing in the traditional current transformer. Amorphous alloy has the advantages of low hysteresis, low loss and high saturation magnetic induction strength, which can effectively improve the measurement accuracy. In addition, amorphous alloy current transformer has the characteristics of small size, light weight, flexible installation, etc., which is convenient for the installation and use of equipment.

Nanocrystalline materials are one of the materials with the highest magnetic permeability, high saturation magnetic induction strength, low iron loss, and a new generation of green, low-carbon and environmentally friendly soft magnetic materials.

Nanocrystallline have a unique disordered structure and exhibit extremely excellent soft magnetic properties, such as low coercivity, low loss, etc. They are widely used in all kinds of magnetic devices for power electronics, and have significant energy-saving and environmental protection advantages.