FEM Based Analysis of Power Transformers & Sub-station Equipment
FEM Based Analysis of Power Transformers & Sub-station
It is the purpose of this research effort firstly to quantify the winding losses and stray losses to evaluate the corresponding temperature rise in transformers. This is accomplished using a 2-D FEM model adapted for winding loss calculation. A corrected hotspot factor that considers stray loss is proposed and verified by practical values. Thermal dynamic models are used and modified to consider a time varying distorted load cycle also. This temperature output is used, with an industry accepted insulation loss of life formula, to evaluate a transformer's per unit loss of life. The second major issue of Transformer is analysis of internal winding faults and condition monitoring methods. In this book a field based analytical method is developed to understand intensity of fault levels and from there an intelligent Neural Network based condition monitoring system has been modeled. Last but not least, in order to enhance the reliability of system, the transformer associated substation equipment like Cable and Bushings have been evaluated using Finite Element based Software and recommendations are given for design improvements for better performance.
- ASIN: 3659371203
bayite AC 80-260V 100A BAYITE-PZEM-061 LCD Display Digital Current Voltage Power Energy Multimeter Ammeter Voltmeter with Current Transformer CT
bayite AC 80-260V 100A BAYITE-PZEM-061 LCD Display Digital
This meter can only be used with one-phase AC power. And it can only measure the active power(real power). It doesn't show Apparent power. For more information about the difference, please search AC POWER on wikipedia. Main Specifications: Working voltage: 80 ~ 260VAC Working frequency: 50/60Hz Measuring:Accuracy: 1% Power Consumption: 0.2W Measurement speed: 2 times/s Store data when power off The blue backlight can be turned on/off manually Test Range and Display format: 1.Power: test range: 0~22kW < 1kW, display: 0.0~999.9W 1kW~10kW, display: 1000~9999W > 10kW, display: 0.1~22.0kW 2.Energy: test range: 0~9999kWh 10kWh, display: 10~9999kWh 3.Voltage: test range: 80~260V(single-phase) Display: 80~260V 4.Current: test range: 0~100A Display: 0.00~99.99A Precautions 1. Please make sure the AC input is Pure Sine Wave.(Municipal electric power is pure sine wave). Please don't use the meter to measure AC power converterd from a DC-AC inverter UNLESS you can make sure the output from your DC-AC inverter is Pure Sine Wave. This is very importatnt. 2. Applied load should not exceed the rated power. 3. Wiring order can not be wrong. 4. This module is suitable for indoor, please do not use outdoor. Packing including: 1x AC Power Multimeter
- Brand: bayite
- ASIN: B00YY1KOHA
- UPC: 711463670128
Micro Machines Orion J-22 Submarine Base Playset
Onkyo TX-8160 2 channel Network Stereo Receiver with built in AirPlay, Wi-fi and Bluetooth
Onkyo TX-8160 2 channel Network Stereo Receiver with
With 80 W/Ch. of pure high-current analog power courtesy of a discrete low-impedance amplification system, your speakers are driven with depth and clarity no matter what audio source you select. And there are so many options: TV sound via digital inputs, music streaming from Spotify or Pandora over Wi-Fi, iTunes via Airplay, MP3s from USB drives, or audio from mobile apps via Bluetooth technology. There's also a Phono equalizer for your turntable and other players can be connected using the digital and analog inputs. Zone 2 pre-outs send any source, including streaming audio, to a spare power amp and pair of speakers-you can even control playback from your phone. BGM Preset stores your best FM/AM and internet radio stations, so entertainment is only a button push away. With almost 70 years experience building premium stereo gear, nothing else performs like an Onkyo.
- Brand: Onkyo
- ASIN: B012J1DKQS
- UPC: 779177469032
BUD Industries NBF-32016 Plastic ABS NEMA Economy Box - Electrical Box for Indoor Uses - Industrial Box in Light Grey Finish with Solid Door Construction. Conduit and Fittings
BUD Industries NBF-32016 Plastic ABS NEMA Economy Box
Bud Industries Plastic Indoor NEMA Economy Box is a plastic construction with hinge pins, featuring a light gray furnish. Solidly built, this electrical box solid comes with heavy-duty hardware in stainless steel that makes the industry economy box weatherproof. Plastic latches used in the industrial economy box add to the safety. This electric enclosure is available with four wall mounting brackets, four M5 x 10mm LG. and self-tapping screws. Wall mounting industrial box includes a gasket that makes sure your enclosure is water proof and protected from dust. Meant for indoor usage, electrical box can be used for variety of industrial applications.
- Color: Opaque Door
- Brand: BUD Industries
- ASIN: B005UPANU2
- UPC: 696746744638