BQ - Bimetall Maximum Current Meter

Austausch der Skala bei Schalttafeleinbaugeräten und Messgeräten zur Hutschienenmontage - BQ - Bimetall Maximum Current Meter

Properties

Bimetall-Maximum-Strommesser
Für x/1A oder x/5A Stromwandler
Gute Ablesbarkeit
Wechselskala
Hohe Rüttel- und Stoßfestigkeit
Klemmenabdeckung nach VGB 04 (Option)

Description

The bimetallic instruments are intended especially for thermal monitoring of transformers, cables, etc. due to their slow reaction to current changes. They indicate mean r.m.s. current value during the measuring period of the instrument. The instrument does not react to short current pulses, essentially. Maximum mean value in a response time period is indicated by the red slave pointer. The latter can be reset or set to zero by means of a knob which can be sealed.

Variants

BQ 48 48 x 48 mm für Schalttafeleinbau

BQ 45 45 mm für Hutschienenmontage

BQ 72 72 x 72 mm für den Schalttafeleinbau

BQ 96 96 x 96 mm für den Schalttafeleinbau

BQ 144 144 x 144 mm für den Schalttafeleinbau

Mechanical Design

The system of the bimetal current meter consists of two bimetal spirals that are installed to work mutually. One bimetal spiral works current-driven, the other bimetal spiral compensates mutually working the ambient temperature, which can vary from -25 °C to +55 °C. A black pointer is coupled to this measuring system, which drags along a red pointer. This red pointer remains at the respective maximum value reached. Bimetallic ammeters are thermally inert and display the mean effective value.