Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
SKM, ETAP, & EDSA Power System Analysis TutorialsThe object of this book is to teach the beginner the basics of three popular power system analysis programs. These programs are designed to simulate and analyze electrical power generation and distribution systems in normal operation and in short circuit. The programs also have many add on options like protection selection, arc flash analysis, transmission line sag & tension, raceway calculations, transient motor starting, etc. The programs have Demo
The object of this book is to teach the beginner the basics of three popular power system analysis programs. These programs are designed to simulate and analyze electrical power generation and distribution systems in normal operation and in short-circuit. The programs also have many add-on options like protection selection, arc flash analysis, transmission line sag & tension, raceway calculations, transient motor starting, etc. The programs have Demo (demonstration or trial) versions to allow people to tryout and learn about them. This book provides the engineer and technologist with information needed to use the Demo versions of SKM, ETAP, and EDSA for load flow and short-circuit analysis. The beginner learns how to use them on a small, but realistic, three-phase power system. The information gained is similar to that which students pay for in company-taught "Introduction to ..." courses. However, with this book, the student avoids paying tuition, learns at times of his own convenience, and can compare the different programs. In this book, load flow (power-flow) and short-circuit analyses are done on a small steady-state three-phase power system with manual methods. Then, each program is used to carry out the same analyses. Since in practice, three-phase systems are the most often analyzed, only three-phase systems will be considered in this book. The DC and single-phase capabilities of the programs will not be considered. The person using this book should already have an analytical electrical background. Academically, he should be educated to at least the level of a university two-year electrical engineering technology program.Binding Type: Paperback
Publisher: Stephen P. Tubbs
Published: 05/12/2009
ISBN: 9780981975306
Pages: 156
Weight: 0.81lbs
Size: 11.02h x 8.27w x 0.33d
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 585 reviews
Sort
Product Reviews
★★★★★ 5
Excellent pillow.
Size: Upgrade Queen (2 Pack)
Wow these pillows are fantastic!!! First off they are good quality and sized as described. I'm forced to sleep on my back since I use a cpap every night. They suggest taking some filling out for "back sleepers". But in my case, I am disabled, overweight, and the way I position myself on a pillow is probably unique. I have a little of my shoulders, head and neck on the pillow. I didn't have to remove any filling. It was pretty good at first and after about a few day/nights, everything settled in just perfectly. It's truly one the finest pillows I've owned to date. (Part of my disability is a very painful neck & muscle malady, my head leans far to the right. Basically feels like a crick in your neck that never goes away. It's called tortacollis or dystonia depending who you talk to.) Because of this, I have truly spent hundreds and hundreds of dollars on different types and styles of pillows. A very select few have worked out fairly well over time until I found this one. As I said in the beginning, this is an excellent pillow and a great value as well. Hopefully this will work as well or even better for others. I purchased a 2 pack this time, 1 for home and the other for our RV. Definitely buying. another 2 pack to keep for future replacements. Pillows simply don't last forever. They get funky in time. No matter how clean you try to stay with bedding and personal hygiene, it just happens eventually. Sweet dreams. :~)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 23, 2025
★★★★★ 1
👎🏽 a
Size: Upgrade Queen (2 Pack)
Incredibly thick and firm pillows. Not great for stomach or side sleepers. They alway end up on the floor cause we find them uncomfortable. Don’t recommend, practically unusable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 5, 2025
★★★★★ 5
It works! Quality pillow.
Size: Standard (1 Count), Color: Original White (Cooling)
This does actually provide a cooling effect, and it's very comfortable! The accompanying literature is helpful too. I believe this to be a quality pillow for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
★★★★★ 5
Most comfortable pillow I’ve ever slept on
Size: Queen (1 Count), Color: Crescent White(cooling)
This is the most comfortable pillow I have ever slept on. It doesn't mash down like other pillows. Cradles my neck perfectly plus it’s cool. I broke my neck a couple of years ago and this pillow feels very good and comfortable. Definitely recommend to everyone. Ive used it since May and it’s retained its shape.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
★★★★★ 4
Smell
Size: Queen (2 Count), Color: Original White (Cooling)
The fact that there are not more comments on the smell of these pillows has me worried about some of yall. Listen, I LOVE the weight, and the firmness, it’s perfect for that. However, these pillows are RANK. They have a very strong mildew-ish smell that lingers. I took the outer cover off and washed it and let the pillow air out for a few days, the smell is still very strong when you press your face against it, which one does because it is in fact designed for that purpose. It smells so bad. It’s nauseating. I can smell it through two pillowcases and blanket that I threw on top of them hoping an extra layer would trap the smell. I’ll bake them in the Texas sun tomorrow and hope that helps, because otherwise these are the perfect pillows for someone who wants to feel like they are hugging a torso but can’t stand the sound/feel of someone else breathing. I don’t know…4 stars, if the smell goes away I’ll come back.
Update: many many days later. Either they don’t really smell anymore or I got use to it. They’ve held their firmness and shape well. I like them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 9, 2026
recommand products
Treal Hobby Axial RBX10 Ryft Aluminum Front Link Mounts (Purple) (2) (TLHTRYFT-76)
16.98
kys
36.95
Treal Hobby FCX24 Aluminum Rear Portal Axle Housing (Silver) (TLHTFCX24-32)
45.98
Treal Hobby RBX10 Ryft Aluminum Front Axle Housing (Silver) (TLHTRYFT-02)
129.00
Team Associated RC8B4 Mod 1 CNC-Machined Metal Spur Gear (47T) (ASC81596)
28.89