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Application
The short circuit indicators type K / KH / KM are used in distribution networks with a radial layout and one input.
They operate on an electro-mechanical basis. The reset of the indication can be performed via the recovering voltage (K) on the conductor and
/ or manually (KH) via a push button, as well as a combination of both reset types (KM). For operation, no auxiliary power supply is necessary.
The short circuit indicators type K / KH / KM are used for detecting shockable currents and currents with a flag growth curve characteristic.
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General Description
The short circuit indicators type K / KH / KM are single units. They are directly mounted on the conductor.
The indication system is incorporated in a plastic housing. The housing is fully sealed and meets the conditions of IP 67.
A stainless steel frame, which is laid around the conductor, fixes the indicator. The frame can be disconnected from the housing, so that a supplementary installation is possible.
The short circuit indicator is used for detecting shockable currents and currents with a flag growth curve characteristic.
The reset is performed:
type K: automatically via the recovering voltage of the conductor. - This indicator can only be mounted on unscreened cables.
type KH: manually via a reset button. - This indicator can be mounted on screened and unscreened cables. With unscreened cables, the indicator must be reset with an operating stick.
type KM: combination of the types K and KH. - The reset can be performed via voltage and manually.
Optionally, the short circuit indicator type K can be equipped with a multiple adjustment for trip
currents. Via a rotary switch, there will be 4 adjustable trip currents adjustable between 150 A and
1500 A. Please indicate the requested trip currents when ordering
(standard: 200 / 400 / 600 / 800 A).
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