Reactor

A reactor is a device which is made up of one or several coils with a frequency-dependent impedance and which works in accordance with the principle of self-induction, whereby a magnetising electrical current generates a magnetic field which is directed through a magnetically-charged core or through air
(Ref.: Ref.: VDE 0570 Teil 2–20/IEN 61558-2-20/IEC 61558-2-20).

The general statements already made concerning such things as protection class, type of protection, insulation material class, rated ambient temperature and (to the extent applicable) transformers also apply
to reactors.

Usually, and unless otherwise agreed upon with the ordering party, reactors will be manufactured with basic insulation between voltage-bearing parts and the core. As a result of the laws of physics, the presence of at least one air gap in reactors causes an operating frequency magnetic leakage field which cannot be ignored and an acoustic noise development which corresponds to twice the operating frequency.
There is a need for providing sufficient clearance to neighbouring electrical
equipment and ferromagnetic materials (e.g. steel switch cabinet).
An important criterion for dimensioning is utilisation of reactors provided for in the low-band range, e.g. as:

• Power reactor
• Smoothing/commutating reactor
• Filtering circuit reactor
• Motor reactor
• Motor filter
• Sinusoidal filter

Unless otherwise agreed upon with the ordering party, we manufacture in
accordance with the latest “State of Technology” and with the following standards:

VDE 0570: Sicherheit von Transformatoren,Netzgeräten und dergleichen, Teil 1: Allgemeine Anforderungen und Prüfungen, Teil 2–20: Besondere Anforderungen an Kleindrosseln

EN 61558, IEC 61558: Safety of power transformers, power supply units and
similar, Part 1: General requirements and tests, Parts 2–20: Particular requirements for small reactors.