Insulation inspection apparatus for motor
AssigneeNissan Motor Co., Ltd.
InventorHideo Awaji
Life of this patent
Estimating the term…
Abstract
An insulation inspection apparatus flows a current into power lines arranged along power lines of motors and sequentially switches relays to measure electromotive forces induced in the power lines of the DC motor, so that the insulation characteristics of the motors are inspected. This provides an insulation inspection apparatus which can perform insulation inspection of a motor for a short period of time without separating the motor from a control device.
Claims13
An apparatus for inspecting insulation of a motor comprising:
- a power line for supplying a power to a control device of the motor, the power line being arranged along an electrical wire for supplying a power to the motor and being electrically insulated from the electrical wire;
- and
- a voltage measurement unit measuring an electromotive force in the electrical wire induced by supplying the power to the power line.
An apparatus for inspecting the insulation of a motor comprising:
- a shielded conductor covering an electrical wire, the shielded conductor being electrically connected to a motor electrical wire for supplying a power to the motor, the electrical wire being arranged near an electrical wire for supplying a power to the motor and being electrically insulated from the motor electrical wire and the shielded conductor;
- and
- a voltage measurement device measuring an electromotive force in the shielded conductor induced by supplying a current to the electrical wire.
An apparatus for inspecting insulation of a motor comprising;
- a charged body which is arranged near an electrical wire for supplying a power to the motor, the charged body being electrically insulated from the electrical wire;
- and
- a voltage measurement unit measuring an electromotive force induced in the electrical wire by the charged body, wherein
- the voltage measurement device is connected to a plurality of motors through relays.
An apparatus for inspecting the insulation of a motor comprising:
- a conductor which is electrically connected to a motor electrical wire for supplying a power to the motor;
- a charged body which is arranged near an electrical wire for supplying a power to the motor, the charged body being electrically insulated from the motor electrical wire and the conductor, and
- a voltage measurement device measuring an electromotive force induced in the conductor by the charged body, wherein
- the conductor is connected to a plurality of motors through relays.
An apparatus for inspecting insulation of a motor comprising:
- a charged body which is arranged near an electrical wire for supplying a power to the motor, the charged body being electrically insulated from the electrical wire;
- a voltage measurement unit measuring an electromotive force induced in the electrical wire by the charged body;
- and
- a display device displaying measurement results of the voltage measurement according to their grades insulation.
An apparatus for inspecting the insulation of a motor comprising:
- a conductor which is electrically connected to a motor electrical wire for supplying a power to the motor;
- a charged body which is arranged near an electrical wire for supplying a power to the motor, the charged body being electrically insulated from the motor electrical wire and the conductor;
- a voltage measurement device measuring an electromotive force induced in the conductor by the charged body;
- and
- a display device displaying measurement results of the voltage measurement according to their grades of insulation.
An apparatus for inspecting insulation of a motor comprising:
- a charged body which is arranged near an electrical wire for supplying a power to the motor, the charged body being electrically insulated from the electrical wire;
- and
- a voltage measurement unit measuring an electromotive force induced in the electrical wire by the charged body, wherein
- the electrical wire is disconnected from a source supplying said power during measuring by said voltage measurement device.
An apparatus for inspecting the insulation of a motor comprising:
- a conductor which is electrically connected to a motor electrical wire for supplying a power to the motor;
- a charged body which is arranged near an electrical wire for supplying a power to the motor, the charged body being electrically insulated from the motor electrical wire and the conductor;
- and
- a voltage measurement device measuring an electromotive force induced in the conductor by the charged body, wherein
- the electrical wire is disconnected from a source supplying said power during measuring by said voltage measurement device.
A method of inspecting the insulation of a motor comprising the steps of:
- arranging a charged body electrically insulated from an electrical wire for supplying a power to the motor near the motor electrical wire;
- and
- measuring an electromotive force induced in the motor electrical wire by the charged body, wherein
- the electrical wire is disconnected from a source supplying said power during said measuring.
A method of inspecting the insulation of a motor, a motor electrical wire for supplying a power to the motor being electrically connected to a conductor, comprising the steps of:
- arranging a charged body electrically insulated from the electrical wire and the conductor near the electrical wire;
- and
- measuring the electromotive force induced in the conductor by the charged body, wherein
- the electrical wire is disconnected from a source supplying said power during said measuring.
Dependencies are inferred from the claim text.