Meaning of Electrical Commissioning

Electrical Commissioning

Electrical Commissioning is totally different from electrical erection. But without an erection, you cannot proceed to the Commissioning parts. In my last post, I already discussed the Electrical Erection work procedure. In this post, I am going to discuss the “Electrical Commissioning” period that I experience in a factory. So let’s go.

Meaning of Electrical Commissioning:

I will start to explain Electrical Commissioning from the very beginning. So what I did? First of all, it was my responsibility to design an Electrical Substation. It took about three months for civil and installation procedures to reach the Commissioning period. We checked all the cable connections for ABS, ACB, CT, PT, Transformer to HT control panel, Earthing System, Lightning Protection Grounding, Transformer to LT panel power cable connection and many more.

Before starting our substation for the first time we checked everything in the Commissioning period. When LV power reaches LT panel then we started to check our BBT. LT panel came intact from overseas and we did some tests like megger test. Then we checked BBT joint connection with power and checked the voltage level at the ends of the BBT line.

When the line to line voltage different was 400V then we provided the power to the individual machine. But before providing the power we checked again all the machine internal wiring connection like a sensor to PLC, Inverter to Main Motor, Signal Lamp, Circuit Breaker, Limit Switch, 400/24V Transformer, and some others connection.

Our Mechanical Engineer was present with us. He also checked his items like foundation bolt, looseness nut, Transmission Belt and some other components. When everything is checked from two departments then we provided the power to the machine.

When Inverter started we set its parameter respect with the motor. We started our machine at low speed for the first time by using an inverter. When the machine started all engineers from the electrical and mechanical departments started to collect the data and matched with standard data.

This is how we can know that our machine is running well or not. Some Service Engineer for individual machine manufacturer was present with us and they inspect the Commissioning procedure for both departments. When everything is set to the standard procedure for running a machine then we kept an individual machine running without any load for the next 8 hours.

After eight hours again we collect data and analyzed with standard data and if everything is ok then machine Commissioning is successful.

Now if you have any question you can write in the comment section and I will try to answer you. If you find this post useful then please share it with your friends. Thanks!