Lessons I learned during the start-up of an MV switchgear

General about start-up

In the world of electrical engineering, a term start-up assumes all works which are necessary to be done for putting in operation already tested switchgear, as close as possible installed in position and ambient defined by design documentation and employer’s requirements.

In order for the start-up to be as more valid as possible, working parameters shall also be close to or equal to designed values. The start-up procedure usually begins with the power-up of the equipment and continues with signal checking, parameter fine adjustment, measurements control, etc.

For more details, you can see the previous article called ‘Most important precautions during commissioning and start-up of LV switchgear’.

These problems may be very expensive and/or require a lot of time to be solved, so in that way, the project time schedule or budget may be significantly jeopardized.

Moreover, in some cases, problems related to MV switchgear can cause problems related to other, downstream equipment, such as power transformer or LV switchgear.

Table of contents:

• Example of MV switchgear start up problems
• Problem #1
  • Solution to Problem #1
• Problem #2
  • Solution to Problem #2