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Grounded systems

The first appHcation of the gas turbine principle to a ground system was in 1906 when waste heat from furnace gases was used to operate a turboblower which compressed air for a blast furnace. Developments in metallurgy and compressor design after World War I led, in 1937, to the first... [Pg.407]

The fuel systems of ground-based turbiaes are far less critical, siace coolants other than fuel can be used and fuel lines can be well iasulated. The tendency for deposit formation ia fuel is not a concern ia ground systems. [Pg.414]

Protection from electric shocks (grounding system)... [Pg.375]

Continuous An effectively grounded system Between line and ground... [Pg.460]

Continuous (i) An isolated neutral system or (ii) A resonant grounded system Between line and ground... [Pg.460]

Grounding conditions Whether an isolated neutral system, an effectively grounded system or a non-effectively grounded neutral system ... [Pg.470]

Table A16.6 Armoured three-core power cable 3.8/6.6 kV (grounded system)... Table A16.6 Armoured three-core power cable 3.8/6.6 kV (grounded system)...
Table A16.8 6.35/11 kV (Grounded system) paper insulated belted cables (IS 692)... Table A16.8 6.35/11 kV (Grounded system) paper insulated belted cables (IS 692)...
For more details on grounding systems and the extent of overvoltages refer to Chapler 20. [Pg.557]

During faults such as during a ground fault in a resonant grounded system or an isolated neutral grounded system. [Pg.558]

Arresters or diverters are generally of the following types and the choice between them will depend upon the power frequency system voltage, characteristics of the voltage surges and the grounding system, i.e. [Pg.589]

Solid neutral grounding system (also known as effectively grounded system) 20/664... [Pg.657]

Below we briefly discuss the criteria and theory of selecting a grounding system to achieve a desired level of fault current to suit a predetermined ground fault protection scheme, i.e. type of grounding and grounding impedance to suit the system voltage, type of installation, and location of installation. [Pg.663]

It is also established that in an effectively grounded system the voltage to ground, Vg, of the healthy phases does not exceed 80% of the line-to-line voltage V( and consequently the GFF does not exceed 0.8 x I3, i.e. 1.4. The. system may be considered as effectively grounded when... [Pg.666]

This is to achieve a higher level of fault current to obtain a quicker tripping on fault. It is obtained when the system has a ground fault factor not exceeding 1.4 (Vg < O.SVf), as noted above. A solidly grounded system will provide effective grounding. This system will reduce the transient oscillations and allow a current sufficient to select a ground fault protection. It is normally applicable to an LT system. [Pg.667]

An impedance grounded system will fall into this category. The GFF may now exceed 1.4 (K > O.SV f). [Pg.667]

See other pages where Grounded systems is mentioned: [Pg.2333]    [Pg.459]    [Pg.460]    [Pg.460]    [Pg.460]    [Pg.541]    [Pg.542]    [Pg.542]    [Pg.543]    [Pg.605]    [Pg.608]    [Pg.608]    [Pg.608]    [Pg.608]    [Pg.620]    [Pg.657]    [Pg.657]    [Pg.657]    [Pg.660]    [Pg.663]    [Pg.663]    [Pg.664]    [Pg.664]    [Pg.664]    [Pg.666]    [Pg.667]    [Pg.667]    [Pg.667]    [Pg.667]   


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