Determining The Movement Profile Of An Armature In A Magnet

A method for determining a movement profile of a plunger-type armature in a solenoid for monitoring a plunger-type armature movement for changes, the solenoid being an electromagnet in which a magnetic field can be generated by means of an electrical coil, and a measuring unit is connected to the electrical coil, which comprises the steps of:

• measuring a current profile with respect to time when the solenoid is operated;
• examining a measured current profile with respect to time for a position of a first reversal point in respect of the time after operation of the solenoid and a current intensity;
• and
• assigning the position of the first reversal point to a movement end of the plunger-type armature.

A medium-voltage and/or high-voltage switch, comprising:

• a solenoid having an electrical coil, an electromagnet in which a magnetic field can be generated by means of said electrical coil, and a measuring unit connected to said electrical coil;
• a plunger-type armature for triggering a switching movement, wherein a movement profile of said plunger-type armature is determined by:
• measuring a current profile with respect to time when said solenoid is operated;
• examining a measured current profile with respect to time for a position of a first reversal point in respect of time after operation of said solenoid and a current intensity;
• and
• assigning the position of the first reversal point to a movement end of said plunger-type armature.

A medium-voltage and/or high-voltage switchgear installation, comprising:

• a solenoid having an electrical coil, an electromagnet in which a magnetic field can be generated by means of said electrical coil, and a measuring unit connected to said electrical coil;
• a plunger-type armature for triggering a switching movement, wherein a movement profile of said plunger-type armature is determined by:
• measuring a current profile with respect to time when said solenoid is operated;
• examining a measured current profile with respect to time for a position of a first reversal point in respect of time after operation of said solenoid and a current intensity;
• and
• assigning the position of the first reversal point to a movement end of said plunger-type armature.