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Method of drying out a generator by short-circuiting the armature through a water rheostat.

Drying out generator

Method of drying out a generator by short-circuiting the armature through a water rheostat.

"The rheostat is an apparatus for admitting the current to the motor gradually, so as not to heat and injure the coils and insulating material by admitting the full current before the armature has attained its full rotary speed..." -Atkinson 1903

Rheostat

"The rheostat is an apparatus for admitting the current to the motor gradually, so as not to heat and…

"A typical direct-current starting rheostat is illustrated [here]." —Croft 1920

Rheostat

"A typical direct-current starting rheostat is illustrated [here]." —Croft 1920

"Nichols Rheostat. a, wooden frame; b, tinned iron strip; c, stationary, and c', movable binding-posts; d, copper strip for short-circuiting." -Whitney, 1911

Rheostat

"Nichols Rheostat. a, wooden frame; b, tinned iron strip; c, stationary, and c', movable binding-posts;…

The inner workings of a rheostat (resistance box). Rheostat contacts (1, 2, 3) are arranged along the outer frame of the body. The contact arm has two contact strips (a, a'), instead of using a regular contact arm. The strips are insulated and press onto contact rings (b, b'). c is a small multiplying resistance, which is equivalent to one of the resistance sections of the rheostat

Rheostat

The inner workings of a rheostat (resistance box). Rheostat contacts (1, 2, 3) are arranged along the…

A relatively small rheostat (resistance box) that is attached to switchboard S and is operated with wheel W. This particular model was used by General Electric Company and are generally attached to the back of the switchboard.

Field Rheostat

A relatively small rheostat (resistance box) that is attached to switchboard S and is operated with…