Low voltage capacitor maintenance plan

In this article, we will explain the recommended steps for the maintenance of your capacitor bank. Visually inspect the capacitors. Check the protection fuse. Control the ambient temperature (average of 35 °C In accordance with IEC 60831). Keep the capacitor terminals clean. Verify the state of the contacts of operating elements.

Standard safety practices should be followed during installation, inspection, and maintenance of capacitors. Additionally, there are procedures that are unique to capacitor banks that must be followed to protect field operators and equipment in accordance with the NESC – National Electrical Safety Code.

Safety First, adhering to Standard Practices: Installation, inspection, and maintenance processes must all be strictly followed over the whole lifespan of a capacitor bank. Protecting field workers and equipment requires adherence to pertinent standards like the NFPA 70E and the NESC (National Electrical Safety Code).

It is essential to adhere to accepted safety procedures and put the proper personal protective equipment (PPE) in place while working with capacitor banks. Conduct a risk assessment before beginning any work on capacitor banks. De-energization and Discharge:

Conclusion: Proper inspection and maintenance of capacitor banks are essential to ensure their safe and efficient operation. Adhering to industry standards and best practices, along with periodic inspections and measurements, helps identify potential issues early on, reducing the risk of accidents and maximizing the bank's lifespan.

Make sure the lock-out, tag-out procedure is followed and wait five minutes before opening the door to the capacitor bank. Open the front door of the capacitor bank and test for line voltage, L-L, L-Ground at the bottom of F1, F2, and F3 (control fuses). There should be no voltage (0 V). Manually trip all stage breakers and then reset to ON.