There is a hierarchy of hazard mitigation that many people in the electrical industry don’t think about, either because of perceived cost, or complexity, or simply not knowing. A hazard will always be a risk to the worker until it has been eliminated, and this is the goal in a perfect world. Design products and […]
Is a Change Management Process Important?
First, what is change management or a change management process? A change management process is a set of steps, or workflows, that document a change from proposal – approval – implementation – testing, allowing for each step to be verified and tracked. Practically it is a process that includes the document control system, procurement, management […]
How to best use the Power System Study Report
If you have gone through the process of completing the power system study report, or have had an outside consultant provide you a binder with all the deliverables, now the real work begins. Having a power system study completed is not the end: it is the start. The reasons to have a power system study […]
What is a Load Flow Study
A load flow study is the trickiest of the critical four power system studies: it evaluates your power system’s capability to adequately supply the connected load while staying within proper voltage and current ranges. The load flow study report will determine the voltages and power factor at all your buses, as well as currents or power […]
Power System Analysis Technical Specification
When starting any project, a power systems analysis technical specification is an integral part of success. A good tech spec eases the difficulty of selecting appropriate analysis software and a high quality service provider. Because a tech spec is a very thorough document, it takes a lot of time to put one together. This is surely time well […]
Protection Coordination Study
In power system studies – the critical four I said: The purpose of the protection coordination study is to verify that the various protection devices in your system, relays, breakers, fuses, etc. are coordinated correctly and are sized appropriately for the equipment that they are protecting. which is very true. To expand on that, a protection […]
Short Circuit Study
A short circuit is an abnormal condition of relatively low resistance between two points of differing potential in a circuit, usually resulting in a flow of excess current. TheFreeDictionary The purpose of the short circuit study is to determine the fault current available at the various buses on your system. These are worst-case single and three phase bolted […]
Power System Study Deliverables
Now that you have decided on the project framework that you are going to go with and you understand the scope of the power system study, you need to prepare the list of deliverables. There are 3 items that must be included in every report, and there are some things that should NEVER be included in […]
Getting a Power System Study Completed – Who does what?
Now that you have determined that you need a power system study, and you have developed the scope of the project, you need to determine how you are going to get the study completed. To start with there are a lot of questions that need to be answered. Do you buy the software and tackle […]
Power System Study Scope
Understanding what you will be primarily using the model for is critical. In some cases the thought is to develop the model as part of the arc flash study and comply with NFPA70E or CSAZ462. This is not a bad idea, even though you are not in compliance – they are standards not codes. When you […]