Distribution points of PR11, ShR11

Distribution points of PR11, ShR11

General description



Are intended for reception and distribution of electric energy of 380/220 V of alternating three-phase current with a frequency of 50 Hz in networks with a glukhozazemlenny neutral for protection of the departing lines at overloads, short circuits and inadmissible power surges, and also for infrequent expeditious inclusions and shutdowns (to 6 times a day).

Degree of protection - IP 21 for the drowned execution, IP 21 or IP 54 for floor and hinged execution. Total current of the departing lines has to be 20% lower than rated current of a case in avoidance of an overheat. Cases can be made with introduction switches and without them (with introduction clips), and can also have to 24 unipolar or up to 12 triple-pole feeders.



Service conditions



· air temperature from + 1 °C to + 40 °C;

· height above sea level no more than 2000 m;

· environment is not explosive, not containing conducting dust, aggressive gases or vapors destroying metals and isolation.



Design



Distribution points are made floor and hinged execution including hinged condensed for installation in a niche, in the form of a metal case in which on a frame the set of automatic switches is established. Access to point is provided from a facade through doors. Input of the feeding cables and the departing lines is carried out from above or from below