Line voltage

Line voltage kV r.m.s. I Normal design level phase to ground kV (peak) 2 Special design level phase to ground kV (peak) 3 3a 4 5... 

The motor is run on no load at a rated frequency and voltage, until the watts input becomes constant (to ensure that the correct value of friction loss is obtained). Readings of line voltage, current, frequency and power input are taken. 

This is a simpler method to check the phase displacement between the incoming and the existing voltage. Normally two lamps are connected in series to make them suitable for 480 V as shown to withstand the maximum line voltage, in case the two voltages fall 180° apart. This voltage, AV can rise to... 

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... 

Vg = voltage across the external resistance R R = external resistance X = ground capacitive reactance Vf = line voltage... 

The magnitude of the charging current, l y will depend upon the content of Q, which is a measure of line voltage, size of the conductor, spacing between the conductors and between the conductors and the ground etc. Table... 

A line can be theoretically loaded up to these levels. But at these levels, during a load variation, the far-end voltage may swing far beyond the desirable limits of 5% and the system may not remain stable. With the use of reactive control it is possible to transfer power at the optimum level (Pnias) hd yet maintain the far-end (or midpoint in symmetrical lines) voltage near to and also to have a near-flat voltage profile. 

There is no leakage capacitance, Co, and hence no Ferranti effect on such low voltages. We will use series compensation to reduce the line voltage drop and improve the regulation and hence the stability of the network as well as its load transfer capability,... 

Rating of each capacitor unit kVAr Line voltage kV... 

A period of time over which the input line voltage completely disappears (the specification is typically 8mS for 60Hz ac off-line applications). 

Via- 18 to 36 VDC required operational range +24 VDC nominal input line voltage... 

Utility companies have a power system network including large generating plants, overhead transmission lines, power substations which reduce transmission line voltages to distribution line voltages, and over-head/underground distribution lines which carry power to the end users (such as a production facility). 

Linien-spanntmg, /. (Elec.) line tension, line voltage, -spektnun, n. line spectrum, -vcr-sohiebung, /. displacement of lines, -zahl, /. number of lines, -zug, m. line, trace (in a graph). 

Figure 14-8A. Induction motor starting characteristics (calculated) at 80% line voltage. (Used by permission Curve MPRO822890. TECO-Westinghouse Motor Co. 8/89)...

Typical induction motor starting characteristics for 80% and 100% of line voltage are shown in Figures 14-8A and 14-8B. 

In individual cases, lower values may be satisfactory or higher values may be necessary depending upon the characteristics of the particular machine and the effect of the locked-rotor kva on the line voltage. 

Controlled furnace-type pyrolyser a, heater b, A1 block c, variable transformer d, gas outlet to column e, Swagelok union f, column oven g, gas inlet h, cement i, glass wool plug j, insulating block k, pyrometer 1, stainless steel chamber m, sample n, heater thermocouple o, pyrolysis tube p, ceramic tube q, line voltage. 

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