Material:
We use high quality crgo steels with low iron-loss and high permeability in thickness of 0.05mm, 0.08mm, 0.1mm, 0.23mm, 0.27mm, 0.3mm and 0.35mm.
Characteristic:
The two halves of three phases put together and come into a closed flux path as an open structure. So bobbin and core can be produced separately, afterward put the core in bobbin, and then the production time can be reduced.
Application:
Various specifications e core are widely used in 50hz and 400hz three phases transformers, reactors, chokes and other magnetic components of electronic equipment.
Advantages of toroidal transformers
1. High efficiency and high performance price ratio
Toroidal core has good electromagnetic performance, like high saturation magnetic flux density, high primary inductance and large unit magnetizing power capacity, which improve the utilization ratio of the core and the winding window area, and reduce the number of turns and the direct current resistance, and also greatly improve the overload capacity and load efficiency of the toroidal transformer. Based on these conditions, the product design does not need to consider more power margin and heat dissipation conditions, and also effectively control the cost.
2. Excellent no-load characteristics
Toroidal core is wound with high permeability silicon steels, no gap on magnetic circuit, low magnetic resistance. Under the same power and magnetic field density, the no-load loss and exciting current of toroidal transformer are only 50%~70% of other transformers, which reduce the standby loss and improve the equipment operation reliability.
3. Low noise
There is no gap of toroidal core, the silicon steels are tightly winded, and after the vacuum impregnation with pressure it becomes a whole. Even in the middle, high magnetic frequency, it will not cause noise due to magnetic expansion. This is what the EI, dry-type and other lamination cores cannot match.
4. Low magnetic flux leakage, low leakage inductance
Toroidal core has a high saturation flux density, and the coil is uniformly distributed on the core, magnetic potential difference can effectively reduce the magnetic leakage. Normally, with the same transformer specifications, the magnetic flux leakage of toroidal transformer is only 1/10 of the EI one. The main coil is tightly and rationally layered winded, and then the leakage inductance of the primary and secondary coils can be better coupled to reduce the primary and secondary leakage inductance.
5. Safety of electrical structure
There is a certain thickness of stacked dielectric film between the core and primary coils, primary coil and electrostatic shielding, electrostatic shielding and secondary coil, secondary coil and the installation plate, which completely isolates the electrical gap and is safe without maintenance. Therefore, isolated toroidal transformers have been widely used in medical equipment transformers.
Introduce:
This product has advantages of low no-load losses, oil-free, flame self-extinguishing, moisture, crack-resistant and maintenance free. Now the entire place which used the ordinary dry type transformer can be replaced by amorphous one. It can be used for high-rise buildings, commercial centers, subways, airports, railway stations, factories and power plants, especially suitable for flammable, explosive high-demand places.
Performance:
- low-energy saving
- high corrosion resistance
- strong ability to withstand short circuit
- low noise
- low temperature and long service life
Application area:
- altitudeâ?¤1000m
- environmental temperature -25+40
- indoor use
Introduce:
The emc standard of frequency range of 150 khz-30mhz on restraining the conducted cm emi are becoming more serious in the application. Cm inductance & filter capacitor were used to restrain the cm emi. Ferrite core or common nano-crystalline core are popular in domestic market as common mode choke cores, but high high-frequency volume and impedance reduction from 150 khz to 30mhz due to the operating frequency limitation makes these cores unworkable. In this ease, nicore developed advanced higher property nano-crystalline common mode choke cores as solution for emc common mode choke cores requirement, and were applied to the emc of switch power modules, ups power supply, communication power supply, inverter, transducer, home appliance.
Characteristics:
- high initial permeability: 5~20 times higher than ferrite core
- high saturate induction density: 2-3 times higher than ferrite core, not easy be saturated in high current fields
- excellent temperature stability-with the serving temperature from -55 to 130"c for a long time. The curie temperature is higher. The properties are not changeable easily even in unstable working temperature.
- good frequency flexibility-better controlling to the noise in different frequencies.
- higher anti-unbalanced-current: specially made nano-crystalline emc common mode choke cores can guarantee 104 permeability when resist 80a/m unbalanced current bias field.
Application area:
- protection for accurate electronic equipment
- common mode jams filtering for emi power
- common filtering in single phase or three phase circuit
Material: iron core: crgo/crngo(z11, h12, h14, h18, h20, h50
Thickness: 0.35mm, 0.5mm.
Origin: baosteel; jfe steel ; hitachi
Standard: ei24-ei114(perforate or imperforate)
Shape: ei, ee, tl, ui.
Special standard: special dimension and style cores produced according to customers specifications.
Application: electronic transformer, induction coil, ballast.
Performance: power rating : 1-1000(w)
Model: ei24-ei114
Range of dimension:
- strip width: minimum 3mm
- inside diameter: minimum 5mm
- outside diameter: minimum 8mm, maximum 1100mm
Toroidal cores tolerance (mm)
Outside diameter
Inside diameter
Height
Od
D
Id
D
H
10
0.4
10
0.30
0.3
25
0.5
25
0.40
0.3
50
1.0
50
0.50
0.4
80
1.0
80
0.75
0.5
100
1.0
100
0.80
0.5
160
2.0
160
1.30
0.8
200
2.5
200
1.50
1.5
320
2.5
320
2.00
2.0
500
3.5
500
2.50
2.5
800
5.0
800
3.50
800
7.5
800
5.00
4.0
Optional forms of finished core:
(1) uncut, non-impregnated.
(2) uncut, lightly impregnated with epoxy varnish.
(3) cut, fully impregnated with epoxy resin.
(4) multi-cut, fully imprenated with epoxy resin.
(5) assembled with plastic cases [pp, maximum working temperature 110thickness 0.4~0.8mm].
(6) green epoxy coating [maximum working temperature 180thickness 0.20~0.50mm].
(7) black epoxy paiting.
Material:
High quality crgo steels with low iron-loss and high permeability in thickness of 0.23mm, 0.27mm and 0.3mm.
Characteristic:
It is toroidal and wounded in the same direction of closed flux path, no magnetic leakage, so its magnetic performance is best. The coil winding is easy and high efficiency with toroidal winding machine.
Application:
Toroidal core is widely used in 50hz and 400hz transformers, current transformers, reactors, chokes and other magnetic components of electronic equipment.
Material:
We use high quality crgo steels with low iron-loss and high permeability in thickness of 0.05mm, 0.08mm, 0.23mm, 0.27mm, 0.3mm and 0.35mm.
Characteristic:
The two halves put together and come into a closed flux path as an open structure. So bobbin and core can be produced separately, afterward put the core in bobbin, and then the production time can be reduced.
Application:
Various specifications c core are widely used in 50hz and 400hz transformers, current transformers, reactors, chokes and other magnetic components of electronic equipment.
