The Diseases Of Electrical Machinery
Forfatter: Ernst Schulz
År: 1904
Forlag: E. & F. N. SPON, Ltd.
Sted: London
Sider: 84
UDK: 621.311
Edited with a preface, by Silvanus P. Thompson
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ELECTRICAL MACHINERY.
57
the conditions with two-phase systems and three-wire
continuous-current systems (Figs. 28 and 29).
Mesh Connection.—Fig. 30 represents another
method of connection, which is called the mesh or
A (delta) connection. With the mesh connection, as
can be seen from the figure, the end of every phase is
connected with the beginning of the following phase.
There is no neutral point. The current is taken from
the three junction-points of the phases. Mesh con-
nection is now practically never used in any machines
working at over 100 volts.
In order fully to understand that which follows, it
were perhaps necessary to treat the above a little more
in detail than is permissible within the compass of this
little volume.
Break in the Winding.—We will now consider
what will happen in the case of two-phase and three-
phase generators with a break in the winding. We
come to the following result. In the case of a two-