Network technology

FRIZLEN earthing resistors are used to reduce the impact of earth faultson components involved in low-voltage networks.
In this way, the resistor limits the current that would flow through the star point of the generator or transformer to a maximum permissible amount. For this application, the series FA3 is often used as a steel-grid resistor in IP23 with continuous power output of up to 66KW. The available variant in stainless steel (optional) facilitates use in the maritime sector.

Example series: T600 | FA 3

FRIZLEN protective resistors are used in relaxation oscillation damping to reduce relaxation oscillations on voltage transformers in the medium-voltage grid.
Relaxation oscillations in oscillating circuits from inductive and capacitive elements can be stimulated by switching operations or also lightning strikes . In the unfavourable case that these relaxation oscillations cause severe damage to the valuable switchboard, they must be reduced to a minimum.
FRIZLEN protective resistors, which are connected to the e-n auxiliary winding of voltage transformers, reduce the effective power to the oscillating circuit and minimise the relaxation oscillations effectively.

Example series: T100 | FZA

The control circuit of high-voltage switches must be maintained at a certain temperature level for trouble-free operation. FRIZLEN heat resistors perform this function cost-effectively and reliably.

Example series: T300 | GHAD