Sometimes, it is better to manually shutdown your inverter when it shows an error message or if you want to check all the switches are on or not. You can follow some simple steps if you wish to manually shutdown your inverter.
- Go through the Single Line Diagram of the System
A single-line diagram or SLD is a simplified blueprint that shows you how inverters, solar panels, power switchboards, and combiner boxes are connected. If you read through this layout, you will get a rough idea about how the solar PV system works and how each component is connected with the other. Some projects might not have SLDs. You might be ready to pay an extra solar inverter price to get this SLD.
- Look for the Solar AC Distribution Board
Solar AC Distribution board is also known as Solar AC Combiner Box. You can easily terminate the AC output cable from the inverter using a circuit breaker and other inverters. You can easily locate this AC combiner box with the help of the SLD.
- Switch the Inverter’s AC Breaker to the Off Position
Open the AC combiner box and locate the breaker that is connected to the inverter. Once you can locate this breaker by reading the labels, you can turn it to the off position. Here, you can even verify this with a tester to make sure that no power goes into your inverter. You must understand that the AC side is switched off first because it helps in avoiding the potential harm of unloading the high DC voltage of the solar arrays directly.
- Now find the Solar Inverter
Once you have switched off the AC side, you would want to check if the actual inverter has stopped working or not. You can find the details of its location in the single-line diagram. You can manually locate the inverter in the electrical room, inverter room, or in the field. You also need to make sure that you have a spare copy of the inverter manual as each different model of the inverter comes with its unique design.
- Switch the Inverter’s DC Switch To Off Position
Once you have located the inverter and read its labels, you need to verify if it has a DC switch attached to it or not. Generally, the DC switch is in-built in the body of the inverter. Sometimes, you may also find a separate DC isolator or isolator depending on the number of string inputs connected to the inverter. Once you can locate the DC switch or DC isolator, you can turn it to the off position and here, your job is done.
- Verify the Status of the Inverter
Once the DC switch is turned to an off position, you might have to wait for a few seconds to verify if your inverter has been switched off or not. You can check the indicators to verify the actual status of the inverter. The LED light indicators or the screen will give you the exact status of the inverter. You might want to pay a higher solar inverter price for the inverter that has a screen that gives all the needful information regarding the status of the inverter. If all the lights and screens are dead, then your inverter is completely switched off. This is a very crucial step when you want to open the inverter or remove its cover. You might even use a clamp meter to check if there is current in the cable. Once you are sure that your inverter is switched off, you will be secure that there is no electrical power in it and there is no danger now.
You need to understand that when the inverter has been shut down, the energy that has been harvested by the solar arrays will not flow to your home. The solar panels will have the capacity to supply power but it will remain as potential energy as it is not connected to the load yet. If you are well aware of the manual shutdown procedure of the solar inverter, you can reboot or restart the system in case the situation demands. You should also be aware of the solar inverter price so that you don’t end up paying extra for an older version.
Also Read: How cheap, reliable solar energy saved lives in a remote region of Assam
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