There are several different types of medium voltage earthing systems. These systems can be differentiated by using the neutral point connection method. They are different in the way that they operate and each of them has its own pros and cons. These earthing systems in medium voltage include the likes of:

The functioning of each differs from the other. They also have various applications. Let’s have a look at each system at a time:

In this one, there is no electrical connection between the earth and the neutral point except for the devices that are used for measurement or protection. There is high impedance inserted between the earth and the neutral point. There is no switching on occurrence of the first insulation fault. It is therefore important to carry out permanent insulation monitoring, show the first insulation fault and locate and clear the first insulation fault.

Pros and cons: The advantage of using this one is that it provides services by tripping only when the second fault occurs which is subject to the capacity of the network not leading to a high earth fault current which would be dangerous for people when the first fault occurs. It has its demerits. There is the risk of high internal over-voltages. Insulation monitoring is also compulsory as well as the presence of maintenance personnel who will be monitoring and locating the first fault during use.

It is also known as direct earthing. It has a connection between the earth and the neutral point. Upon first insulation fault occurrence compulsory switching must be done. It is significantly different from the above mentioned unearthed neutral.

Pros and cons: This system reduces risk of over-voltage occurring and also authorizes the use of equipment with a normal phase to earth insulating level. On the other hand, there is mandatory tripping upon occurrence of the first fault. The touch voltages developed are very high and this poses a high risk for the personnel while the fault lasts. Differential protection devices must be used so that the clearance time of the fault is as short as possible.

This system requires a resistor to be inserted between the neutral point and the earth. It is also known as limiting resistance earthing. Their operating technique is quite straightforward. Switching must be done upon the occurrence of the first fault.

Office spaces are a place for color temperature of 5600k, we don’t need to quite match this. A level between 5000k to 6000k will do fine for an office environment to prevent sleepiness.

Exposure to non-artifical light (aka, natural light from the sun) is known to this post by luxreview.com that should lead you in the right direction.

From there, ensuring you know all of the rules in your area will be the best route to ensuring you aren’t breaking any laws with an improper lighting system. The added benefit to following these rules is you can drastically reduce any possible liabilities you may incur if you had otherwise ignored these rules. So, we find it best to follow them!

Additional considerations

Not only are the above tips important to consider, but strongly considering LED office light technology can prove to supply the above benefits along with the following:

Energy savings.

It’s not uncommon for companies to list of 9 ways LED beats fluorescent on our blog, it’s certainly worth checking out.

Longer lifespans.

Longer life spans by 2 to 3 times is very common when converting to LED from other lighting technologies, just as much as its very common for the insane energy savings we talked about above.

This has two mains benefits which we always talk about: the less often need to buy replacement tubes as well as fewer maintenance costs to pay someone to replace those lights. We like to think of the second as an indirect way longer lifespans saves you money, and it’s certainly a great benefit.

Conclusion

We’ve not only covered tips to consider when implementing a better lighting system into your office but also why LED might be a great option for doing so while also reducing overhead costs. Hopefully, by following these tips you find your way to a more productive office and lower overhead.

Early Christmas morning in Stamford, Connecticut, the fire department rushed to the aid of Madonna Badger’s family as their home was engulfed in flames. The simple act of discarding ashes from the fireplace turned deadly when those ashes were not fully extinguished, sparking the blaze from outside the home. The heartbreaking news that both of Badger’s parents and her three young daughters perished in the fire turned what would normally be a joyous holiday into a time of mourning for friends, family, and community members in Stamford. Our hope, at ElectricMan Inc. is that this sad story will help drive home the message that smoke detectors are the most important safety feature that you can have in your home.