AC / DC Power Toroidal Coil Air Core Durable Temperature Resistance

AC / DC Power Toroidal Coil Air Core Durable Temperature Resistance

Toroidal Coil

It is a sensor to measure welding current. A copper wire is multi-lapped around belt-shaped core. Also, it is called Rogowskii coil, whose theory has been known since early times.

Material: Air core

Power: 1Watt~20KWatt

Hi-Pot: 0.0KVrms

Working frequency: 50Hz~1GHz

Working Temperature: -20'C~+125'C

Features

A toroid has a magnetic field inside of itself that forms a series of concentric circles. Outside of it, the field is zero. The strength of this magnetic field depends on the number of coils the toroid has on its body. The field is not uniform, because the field is stronger near the inner part of the ring than it is nearer the outer part. This means that if r is the radius of the transformer, the magnetic field decreases as r becomes larger.

Disadvantages and Advantages

Toroids have some disadvantages over regular solenoids. They are harder to wind and also to tune. However, they are more efficient at producing needed inductances. For the same inductance as a regular solenoid, a toroid requires fewer turns, and can be made smaller in size. Another advantage is that since the magnetic field is confined to the inside, toroids and toroidal transformers can be placed near other electronic components without concern about unwanted inductive interactions.

Our company to applied the international advanced technologies, which is committed to R & D and production for the inductive element in different areas, it mainly used in Solar energy inverter, Switching power supply, Inverter DC welding machine, Industrial frequency induction heating, LED lighting, Household appliances, Medical and health care equipments, etc..

Our company has rich experienced R & D team, with the design and manufacturing of inductive components (Bel Fuse, Pulse, MeiXing), very familiar with the magnetic material and the international standards such as UL standard, in UL CLASS B, C insulation system, F grade, and is equipped with advanced testing equipment and solid design software as supported.

Careful management with the implementation of 7S, and our design team from photovoltaic inverter, switching power supply, inverter DC welding machine, industrial frequency induction heating, LED lighting, household appliances and ecological energy fields provide the best benefit cost of various design solutions and strong technical support.

The main production and processing equipment:
Single axis, four axis winding machine, twelve axis automatic winding machine.
The microwave coil self checking machine.
Full automatic production line,
Automatic jet printer,
Vacuum (limited) varnish machine,

To provide the following materials used and comply with safety regulations of the bobbin:
PET-FR530 DuPont E69578 (M)
Nylon 70G33L DuPont E41938 (M)
BASF A3X2G7 BASF E41871
T375J Taiwan: Changchun E59481 (S)
PM9630 Sumitomo E41429 (M)
PM9820 Sumitomo E41429 (M)

Test instrument:
The Agilent 4294A, E4980A, 4263B, and Chroma 3250 comprehensive precise LCR Measurement & analyzer.
The Wayne Kerr DC bias current source 3265B and precise magnetic element analyzer 3260B.
Hi-pot test (0~5KVac).
High temperature cycle test (-70 to 200 DEG C IEC60068-2-1/2-2/-2-30/-2-78 standard)