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Brush holders Brush holders РТПл-25х32 and РТПэ-25х32

Brush holders РТПл-25x32 and РТПэ-25x32 with a roll сonstant-force spring

РТПл-25х32 and РТПэ-25х32  

  
Company LEG ltd. presents general-purpose brush holders with a roll сonstant-force spring. In РТПл-25x32 and РТПэ-25x32 brush holders an electrical brush of extended height up to 70 mm can be used.
The experience of European manufacturers shows that such a technical solution (increase of brush operational height in 2-2,5 times) prolongs the life service of a brush, brush and contact device (current-collection joints) and the maintenance interval.
The brush holders are produced by Company LEG ltd. using modern technologies. Quality control takes place at each stage of production process to ensure compliance with all standard documentation requirements.
The РТПл-25x32 and РТПэ-25x32 brush holders differ in inside dimensions of mounting to supporting surface:
  • РТПл-25 x 32 - 7,7 x 13,8mm;
  • РТПэ-25 x 32 - 9,8 x 20 mm.

РТПл-25х32

РТПэ-25х32
The expected service life of a brush holder body - not less than 5 years, the expected service life of a spring box - not less than 3 years (Technical conditions ТУ У 27.1.-14111810-007:2019).

Structural features of brush holders:

  • robust design, body material - brass;
  • can be additionally completed with integrated indicating/wear signaling instrument to provide operational security;
  • the spring box constriction is included with a roll constant-force spring, providing a constant pressure on the electrical brush in the course of operation;
  • spring box is fastened on a brush holder body for easy brush replacement and checking on the spring box every time the brush is replaced;
  • the spring box is made operator-friendly (with strongly marked bends to adjust fingertips) to provide convenient installation/removal of the spring box and give access to a brush;
  • makes possible replacement of a spring box without replacement of a brush holder body;
  • brush replacement is intended on an operating unit, for example, in turbine generator;
  • permits installation of brushes up to 70 mm in height, which prolongs maintenance intervals.

the body construction facilitates better cooling of a brush.

 


РТПл-25х32РТПл-25х32
Up to 50 % of electrical brushes in industry are of size 25x32x40, but the extended-length brush 25x32x70/76 is more frequently being used (more economically substantiated solution).
The extended-length brush can not be installed in ДГ, ДРПч and ДПГ brush holders, therefore Company LEG ltd. suggests and recommends the brush holder РТПл/э-25x32 as a substitute for the above mentioned brush holders.
Moreover, Company LEG ltd. suggests a complex solution - the brush holder and electrical brushes (of various types and sizes) with improved НК-8 plate.
НК-8 - is a nylon rubber plate manufactured by Company LEG ltd. Functions out of close touch with the brush contact, damps vibration and prolongs the brush life service. The given plate can successfully substitute for metal plates НК-1, НК-2 and rubber plates НК-6, НК-7 in all model types of electrical brushes.
Company LEG ltd. recommends to use brush holders with automated wear control system for brushes of own production, as well as with perfected dust-removal system for easy exploitation and maintenance of brush and contact device.
The brush holders РТПл and РТПэ - are a good solution for efficient performance on stationary engines.
Electric generator cross-bar with brush holders РТПл/эElectric generator cross-bar with brush holders РТПл/э