Contact sheet for capacitor re-inspection

What is a visual inspection of a capacitor bank?

Visual inspection of the capacitor bank must be conducted for blown capacitor fuses, capacitor unit leaks, bulged cases, discolored cases, and ruptured cases.

How do you check a capacitor bank after energization?

Also, measure and verify if the supply voltage, phase currents, and the kVAR of the capacitor bank are within the allowed limits. Approximately 8 h after energization, conduct a visual inspection of the bank for blown fuses, bulged units, and proper balance in the currents.

What is a capacitor test checklist?

This document is a checklist for testing capacitors. It lists the rated and measured values that should be checked for capacitors, including kVAr, voltage, current, and measured capacitance values across the three phases. Proper testing requires using a true RMS type multimeter or tong tester.

How do I know if a capacitor is working properly?

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.

How often should a capacitor be inspected?

Both circumstances are harmful for capacitors. In accordance with the IEC 60831-1 Standard, the capacitor is prepared to operate continuously at up to 10% overvoltage for up to 8 hours, every 24 hours. Check the working temperature of the capacitors after they have been operating for 24 hours.

How often should a substation and distribution capacitor bank be inspected?

The substation and distribution capacitor banks should be inspected and electrical measurements be made periodically. The frequency of the inspection should be determined by local conditions such as environmental factors and type of controller used to switch the capacitors on and off. 7. Visual Inspections