Method for connecting an inductive load and connecting circuit for carrying out the method
AssigneeALSTOM Technology Ltd
InventorsAndy RUDEL, Carsten MEINECKE, Johann REIS
Life of this patent
Estimating the term…
Abstract
A method is provided for connecting an inductive load, especially a winding of a generator, for testing purposes to a predetermined alternating medium voltage, whereby the inductive load is connected to the medium voltage by means of a breaker. To reduce the inrush current, the connection is timed to come into effect when the medium voltage has a predetermined phase.
Claims10
A method for connecting an inductive load (13) of a generator (12) to a predetermined alternating medium voltage, the method comprising:
- connecting the inductive load (13) to the medium voltage by a breaker (17);
- and
- timing the connection to come into effect when the medium voltage has a predetermined phase, to reduce an inrush current.
A connecting circuit (11) for carrying out a method for connecting an inductive load (13) of a generator (12) to a predetermined alternating medium voltage, the method comprising:
- connecting the inductive load (13) to the medium voltage by a breaker (17);
- and
- timing the connection to come into effect when the medium voltage has a predetermined phase, to reduce an inrush current, the connecting circuit (11) comprising:
- medium-voltage connections (15a, 15b) for connecting the medium voltage;
- and winding connections (21a, 21b) for connecting the inductive load which are connected to one another via a breaker (17), a first voltage transformer (16) is arranged between the medium voltage connections (15a, 15b) and the breaker (17), an output of the first voltage transformer (16) is connected to an input of a zero-crossing detector (22), the zero-crossing detector (22) controls the breaker (17) via a downstream delay circuit (23).
Dependencies are inferred from the claim text.