RU48432U1 - POWER SUPPLY FLEXIBILITY CABLE - Google Patents

Abstract

The utility model relates to the cable industry of the electrical industry and can be used to attach mobile mechanisms or electrical installations, including when rubbing against rock abrasive rocks. Creating a reliable cable remains highly relevant. The developed cable of the KPGNUT1 brand is intended for connecting mobile mechanisms or electrical installations to electric networks with a nominal voltage of 660 V AC of a nominal frequency of 50 Hz.The main factor of economic efficiency is an increase in cable reliability when rubbing against rock abrasive rocks due to the improvement of cable design.

Description

The utility model relates to the cable industry of the electrical industry and can be used to connect mobile mechanisms or electrical installations to electrical networks.

Creating a reliable and at the same time relatively cheap cable remains highly relevant.

An analogue of development can be considered a cable brand KPGNT.

The disadvantages of the analogue is

- low tensile force of the cable during installation and operation;

- low strength of the shell when rubbing against rock abrasive rocks;

- unstable cable design.

The developed cable of the KPGNUT1 brand is intended for connecting mobile mechanisms or electrical installations to electric networks at a rated voltage of alternating current of a nominal frequency of 50 Hz of the main conductors of 660 V.

Type of climatic modification - U, placement category 5 at ambient temperature from minus 30 ° С to 50 ° С.

The design of the cable KPGNUT1 is shown in Fig. 1.

Copper conductive conductors of cable 1 - correspond to 5 or 6 class of flexibility.

The design has a grounding conductor or a zero conductor. The nominal cross section of the zero core or ground conductor is equal to the nominal cross section of the main conductors.

Heat-resistant rubber insulation is applied to the conductive wires of the cables 2.

The geometric dimensions of the main conductors and ground conductors are the same.

There is a reinforcing core in the center of the cable. (3)

Two-layer rubber sheath reinforced with synthetic filaments (inner 4 and outer sheath 5) is superimposed on twisted cable cores.

The technical result of the utility model is to improve the technical characteristics of the product.

Allowable temperature for heating conductive conductors up to 90 ° С.

The increased strength of the cable sheath allows it to be resistant to abrasion against rock abrasive rocks.

The tensile force on the cable during installation and operation up to 30 N per 1 mm ^{2 of the} total cross section of all cores.

The main factor of economic efficiency is an increase in cable reliability due to the use of a reinforced sheath, a more flexible cable design and the use of relatively cheap materials for the sheath without compromising cable performance and reliability.

Literature:

1. Information and technical collection. Cable products. Moscow. OJSC VNIIKP. 1999 year

2. TU 16. K73.05-93 - “Flexible power cables for voltage 660 V”. Technical conditions NIKI Tomsk 1993

Claims (3)

1. Power cable of increased flexibility, consisting of three main conductors and a grounding conductor with heat-resistant rubber insulation, characterized in that for the manufacture of the cable a two-layer rubber sheath reinforced with synthetic threads is used, resistant to oils, not spreading combustion and resistant to abrasion against rock abrasive breed. 2. Power cable of increased flexibility according to claim 1, characterized in that the ground conductor and the main cores have equal cross sections and geometric dimensions. 3. Power cable of increased flexibility according to claim 1, characterized in that the permissible temperature on the conductive core is 90 ° C.