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Distribution points PR series

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Distribution points of the PR11 series are used for receiving and distributing electricity, protecting various installations with voltages up to 660 V AC with a frequency of 50 Hz from overloads and short circuit currents, as well as infrequent (up to six times per hour) operational switching on and off of electrical chains. Distribution point PR11 is applicable for starting asynchronous electric motors. PR11 provides protection of people from electric shock due to the inclusion of RCD* life protection devices.

Distribution points PR11 are located in industrial, residential, domestic and public facilities with service through the front door. There are the following versions of PR11 distribution points: mounted, recessed and floor-mounted.

The nominal operating mode of the PR11 distribution point is long.

Distribution points PR-11 and PR-11D comply with the requirements of technical specifications TU U 31.2-33120999.001-2005.

Upon request, PR11 distribution points are designed with an incomplete number of feeder switches, but with a full busbar.

The distribution point PR11 is created on the basis of a frameless design; a door is installed on the hinges and locked with a lock. A chassis frame with a certain set of circuit breakers is mounted inside the cabinet. On the chassis frame there is a zero bus with clamps for connecting the zero wires of transmission lines. Additionally, it is possible to install an insulated neutral. Live parts inside the cabinet are covered with a metal screen mounted using four clamps. With a five-wire circuit of the distribution cabinet PR11, two buses PE and N are installed in the chassis. Control over the input and feeder circuit breakers is possible only with the door of the distribution point PR11 open.

The design of the distribution point PR11 provides for the entry and exit of supply and outgoing lines both from above and from below. To measure the input voltage, a cabinet with a voltmeter is installed. When ordering, you must specify: the final value of the measurement range, current frequency and connection method. Distribution points PR11 are supplied complete and ready for use. Mounting of wall-mounted cabinets is carried out using anchors.

Diagram of the symbol for the distribution point PR11

Read from top to bottom:

PR11

distribution point PR11 series

X

modification of the cabinet according to the type of installed devices:

D – feeder circuit breakers, mounted on a DIN rail;

by default – general industrial use.

X

execution construction:

1 – recessed distribution point;

2 – hanging distribution point;

3 – floor-standing distribution point.

XXX

scheme number (according to tables)

XX

shell protection degree:

31 – degree of protection IP31;

54 – degree of protection IP54.

XX

climatic version and placement category according

to GOST 15150-69 and GOST 15543.1-89 – U3, U3.1


PR11 distribution points are manufactured for rated current of 250 and 400 A.

Complies with technical specifications TU U 31.2-32729641-004:2011.


* RCD is a residual current device, which is a differential current switch (difrele) that disconnects the electrical network when leakage currents occur.

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