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Vacuum pressure impregnation

Procedure for vacuum pressure impregnation (with particuiar reference to HT motors)... [Pg.223]

Figure 9.3(a) A stator core during vacuum pressure impregnation (resin-poor insulation) (Courtesy NGEF Ltd)... [Pg.223]

Figure 9.3(b) Stator core after vacuum pressure impregnation (VPI)... [Pg.224]

Insulating materials and their properties Ageing of insulation Practices of insulation systems Procedure for vacuum pressure impregnation Maintenance of insulation Monitoring the quality of insulation of HT formed coils during manufacturing... [Pg.996]

Termites and powder post beetles cause many thousands of dollars loss of wood installations. Creosoting and vacuum-pressure impregnation of Wolman salts into pine lumber provides protection however, there exist many structures where in situ protection against termites would be of value. [Pg.76]

Larsson and Simonson (1994) studied the mechanical properties of acetylated Pinus sylvestris and Picea abies. The MOR and MOE decreased by about 6 % for pine, but increased by about 7 % with spruce samples after acetylation. Samples for this study were vacuum/pressure impregnated with acetic anhydride, excess anhydride was then drained off and samples were heated at 120 °C for 6 hours. The hardness of the acetylated wood samples was also found to increase, which was considered to result from the lower MC of the modified wood. Acetylated samples were also found to be less susceptible to deformation when subjected to varying RH. [Pg.59]

Many polymeric systems have been adapted for applications in which they become an integral part of electrical equipment. Polymers may be used, for example, to protect components of electrical systems or to enhance the mechanical and electrical integrity of electrical apparatus. These applications are referred to as vacuum pressure impregnation, potting, encapsulation, and casting some of these are illustrated by the following examples. [Pg.525]

Vacuum-pressure impregnated baking Polyester resin (thermoplastic)— ... [Pg.2358]

The maximum moisture content method is based on the assumption that the density of cell wall substance is constant for all species. A value of 1.5 g/cm is usually assumed. Because waterlogged wood is by definition at or near its maximum moisture content, the method requires making certain that all air is replaced by water so that the wood is truly at its maximum moisture content. This step can be done by vacuum-pressure impregnation, after which the moisture content can be determined by oven-drying. The conventional density can then be calculated by ... [Pg.89]

Impregnating insulating varnish n. First coating insulating varnish applied to electrical equipment by means of vacuum-pressure impregnation, or by dipping. Its... [Pg.516]

Plate 9 Vacuum-pressure impregnation treatment plant. [Pg.431]

Vacuum-pressure impregnated baking type solventless polyester varnish... [Pg.2125]

See other pages where Vacuum pressure impregnation is mentioned: [Pg.521]    [Pg.219]    [Pg.222]    [Pg.222]    [Pg.495]    [Pg.521]    [Pg.212]    [Pg.323]    [Pg.47]    [Pg.519]    [Pg.525]    [Pg.2285]    [Pg.1033]    [Pg.249]    [Pg.84]    [Pg.383]    [Pg.787]    [Pg.2455]   
See also in sourсe #XX -- [ Pg.223 ]



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