RU178371U1 - CONTACT CLAMP BLOCK FOR SWITCHING AND BRANCHING POWER CABLES UP TO 380 V AND CABLES OF LIGHTING CIRCUITS - Google Patents

Abstract

The utility model (hereinafter referred to as BKZ) relates to electrical products. BKZ can be used at nuclear facilities (hereinafter referred to as OIAE) and thermal energy for switching and branching power cables and cables of lighting circuits with a rated voltage of alternating current up to 380 V with a frequency of 50 (60) Hz and rated operating current up to 125 A, cross-sectional range of connected conductors from 0.13 to 50 mm. The technical tasks to which the utility model is aimed are: - increasing electrical parameters: rated current up to 125 , the maximum cross-sectional area of connected conductors is 50 mm; - increasing manufacturability and unification in production; - increasing reliability. Technical tasks are solved accordingly: - installation of terminal clamps on the rail with a cross-sectional range of connected conductors from 0.13 to 50 mm; - through-holes in all lateral (four) walls of the housing and installation of couplings (fittings) in them; - tight connection of a pipe or metal hose with a cable laid in them by entering the tail (outer) part of the coupling (fitting) - for pipes up to aschelkivaniya for metal pipe - tightening the nut available to complete the coupling (fitting) .Tehnicheskoe solution is illustrated by drawings: - FIG. 1 - block contact clamps for switching and branching power cables up to 380 V and cables of lighting circuits. BKZ (Fig. 1) consists of a housing pos. 1 with external fasteners pos. 2 and covers pos. 3 connected by captive screws pos. 4, couplings (fittings) pos. 5 with caps pos. 6, rail pos. 7 with terminals pos. 8 and end holders pos. 9.Rake pos. 7 with the terminals pos. 8 is mounted inside the housing pos. 1 screw connection pos. 10 to the welded in the body pos. 1 guide rails pos. 11.Case pos. 1 with cover pos. 3 and couplings (fittings) pos. 5 are provided with elastic gaskets (not shown in FIG. 1). Housing pos. 1 and cover pos. 3 are connected by a grounding conductor pos. 12.Case pos. 1 and cover pos. 3 are equipped with a grounding element pos. 13. Grounding of the connected pipe or metal hose pos. 14 is provided by a metal connection through a coupling (fitting) pos. 5 from the body pos. 1 to the pipe or hose pos. 14. Fitting (coupling) pos. 5 is installed on all side (four) walls of the housing pos. 1 through holes (not shown conditionally in Fig. 1). The BKZ belongs to the I seismic resistance category I and remains operational under seismic loads of the maximum rated earthquake of 9 points. When using the BKZ at the OIAE in production facilities with radioactive medium (hermetic volume and controlled access areas ) use a polished stainless steel case with silicone seal, radiation-resistant terminals and stainless steel couplings (fittings). The temperature range of the BKZ operation is th zones in the sealed volume and controlled access, from -60 ° C to + 150 ° S.Dlya placement in industrial premises free access nuclear facilities and thermal energy objects can be employed with the housing BKZ key. 1 carbon steel. Also case pos. 1 can be made of fireproof polyester reinforced with fiberglass, not containing halogen and cadmium, or from aluminum, and couplings (fittings) pos. 5 - made of nickel-plated brass. The temperature range of operation of the BKZ, located in the OIAE free access premises and thermal power facilities, is from minus 40 ° C to plus 90 ° C. The degree of protection of the BKZ from external influences is IP65. The number and type of terminals pos. 8 and couplings (fittings) pos. 5 may vary. The number and type of coupling (fitting) pos. 5 is selected according to the number of cables, the diameter of the input cables and the number of conductors in the cable, as well as the diameter of the connected pipe or metal hose pos. 14. BKZ meet fire safety requirements. In case of any malfunctions arising in them, they cannot be a source of ignition.

Description

The utility model (hereinafter BKZ) relates to electrical products.

BKZ can be used at facilities for the use of atomic energy (hereinafter referred to as OIAE) and thermal energy for switching and branching power cables and cables of lighting circuits with a rated voltage of alternating current up to 380 V at a frequency of 50 (60) Hz and a rated operating current of up to 125 A, cross-sectional area of connected conductors from 0.13 to 50 mm ^2.

A well-known junction box (patent for PM RU No. 53079, IPC: H02G 5/04, H01R 25/14; published on 04/27/2006) and a power junction box (patent for PM RU No. 45569, IPC: H02G 5/08, H02G 5 / 04; published on May 10, 2005). The last box is taken as a prototype.

The prototype as well as the claimed utility model contains a housing with a cover, a terminal block with grounding electrical clamps mounted inside the housing.

The disadvantages of the prototype are:

- low electrical parameters: rated current to 63 A, the maximum cross section attached veins 25 mm ^2;

- housing with the possibility of installing cable entries from only three sides;

- the lack of the possibility of detachable and tight connection of the pipe when performing electrical wiring in the pipes.

The technical tasks to which the utility model is directed are:

- increase in electrical parameters: rated current up to 125 A, maximum cross-section of connected conductors 50 mm ² ;

- improving manufacturability and unification in production;

- increased reliability.

Technical problems are solved accordingly:

- installation on a rail of terminal clamps with a range of cross-sections of the connected conductor from 0.13 to 50 mm ² ;

- making through holes in all side walls of the housing and installing couplings in them;

- tight connection of the pipe with the cable laid in it by entering into the tail of the sleeve until it clicks into place.

The technical solution is illustrated by the drawing:

- FIG. 1 - block terminal blocks for switching and branching power cables up to 380 V and cables for lighting circuits.

BKZ (Fig. 1) consists of a housing pos. 1 with external fasteners pos. 2 and covers pos. 3, connected by captive screws pos. 4, couplings pos. 5 with caps pos. 6, rail pos. 7 with terminals pos. 8 and end holders pos. 9.

Rail Pose 7 with the terminals pos. 8 is mounted inside the housing pos. 1 screw connection pos. 10 to the welded in the body pos. 1 guide rails pos. eleven.

Case pos. 1 with cover pos. 3 and couplings pos. 5 are provided with elastic gaskets (not shown in FIG. 1).

Case pos. 1 and cover pos. 3 are connected by a grounding conductor pos.12.

Case pos. 1 and cover pos. 3 are equipped with a grounding element pos. 13.

The grounding of the connected pipe is ensured by a metal connection through the coupling pos. 5 from the body pos. 1 to the pipe pos. fourteen.

Coupling pos. 5 is installed on all side walls of the housing pos. 1 through holes (in Fig. 1 conventionally not shown).

BKZ works as follows:

Using external fasteners pos. 2 buildings pos. 1 fix BKZ to a concrete wall or metal structures.

Connect the ground wire to the ground loop and the ground element pos. 13, located on the housing pos. 1 BKZ.

Open the cover pos. 3 by unscrewing the captive screws pos. 4 buildings pos. one.

Unscrew the clamping nut of the coupling pos. 5, take out the plug pos. 6, ensuring the preservation of the IP block, a cable (not shown in Fig. 1) is inserted into the housing pos. one.

Tighten the clamping nut of the coupling pos. 5 to fix the cable, cut the cable (not shown in Fig. 1) and connect the cable conductors to the terminals pos. 8.

For convenience, cable cutting and connection of cable conductors (not shown in Fig. 1) with terminals pos. 8 rail pos. 7 with terminals pos. 8 can be moved (right or left), increasing the installation space, after loosening the tightening of the screw connection pos. 10.

At the end of the connection, the conductors are neatly laid in the housing pos. 1 BKZ and, if necessary, fastened with screeds (not shown in Fig. 1).

Screw connection pos. 10 slats pos. 7 with terminals pos. 8 tighten to prevent spontaneous movement of the rack pos. 7 with terminals pos. 8 in the body pos. one.

Pipe connection pos. 14 to the coupling pos. 5 occurs by introducing the pos. 5 to snap into place.

Close the lid pos. 3 by tightening the captive screws pos. 4 buildings pos. one.

BKZ belongs to the I seismic resistance category and maintains operability under seismic loads of the maximum calculated earthquake of 9 points.

When using BKZ at the OIAE in production facilities with a radioactive medium (hermetic volume zones and controlled access), a polished stainless steel case with silicone seal, radiation-resistant terminals and stainless steel couplings is used.

The temperature range of operation of the BKZ located in zones of tight volume and controlled access is from minus 60 ° С to plus 150 ° С.

For placement in industrial premises of free access of the OIAE and thermal power facilities, a BKZ with a case pos. 1 made of carbon steel can be used. Also case pos. 1 can be made of fireproof polyester reinforced with fiberglass, not containing halogen and cadmium, or from aluminum, and couplings pos. 5 - nickel-plated brass.

The temperature range of operation of the BKZ located in the production facilities of free access of the OIAE and thermal power facilities is from minus 40 ° С to plus 90 ° С.

Degree of protection of BKZ against external influences IP65.

Number and type of terminals pos. 8 and couplings pos. 5 may vary.

Number and type of coupling pos. 5 is selected by the number of cables, the diameter of the input cables and the number of conductors in the cable, as well as the diameter of the connected pipe pos. fourteen.

BKZ meet fire safety requirements. In case of any malfunctions arising in them, they cannot be a source of ignition.

Claims (1)

A block of contact clamps for switching and branching power cables up to 380 V and cables of lighting circuits, consisting of a housing with external fasteners and a cover connected by captive screws and a grounding conductor with an element for grounding, a rail with terminal clamps and end holders, which is installed it is fixed with terminal clamps inside the case, characterized in that terminal clamps with a range of cross-sections of the connected conductor from 0.13 to 50 mm ^{2 are} installed on the rail; through holes are made in all side walls of the housing, into which couplings are installed for hermetically connecting the pipe with the cable laid in it by entering into the tail of the coupling until it clicks into place.

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