E.P.E.

Technical Application Paper:  ABB –  Three phase asynchronous Motors

http://www05.abb.com/global/scot/scot209.nsf/veritydisplay/062b3be1c408b5e6c12574bb0038d70f/$file/1sdc007106g0201.pdf

***

Theorectical Principles to improve power factor.

http://www.electrical-installation.org/wiki/Theoretical_principles_to_improve_power_factor

***

A Guide to Understanding: Short-Circuit Protection Devices, Overload Protection Devices, and Coordinated Protection

http://samplecode.rockwellautomation.com/idc/groups/literature/documents/br/193-br001_-en-p.pdf

***

MV transformer sub-stations – theory & examples of short circuit calculation

http://www.voltimum.co.uk/news/13791/cm/mv-transformer-sub-stations—theory—examples-of-short-circuit-calculation.html

***

Circuit Breakers

http://en.wikipedia.org/wiki/Circuit_breaker

File:Oil circuit breaker MKP-110 Toliatti Russia.jpg

Russian 110 kV oil circuit breaker

***

File:115kV Oil Circuit Breaker.JPG

115 kV bulk oil circuit breaker

***

File:400kv.jpg

400 kV SF6 live tank circuit breakers

***

File:Circuitbreaker.jpg

Photo of inside of a circuit breaker

The design includes the following components:

  1. Actuator lever – used to manually trip and reset the circuit breaker. Also indicates the status of the circuit breaker (On or Off/tripped). Most breakers are designed so they can still trip even if the lever is held or locked in the “on” position. This is sometimes referred to as “free trip” or “positive trip” operation.
  2. Actuator mechanism – forces the contacts together or apart.
  3. Contacts – Allow current when touching and break the current when moved apart.
  4. Terminals
  5. Bimetallic strip.
  6. Calibration screw – allows the manufacturer to precisely adjust the trip current of the device after assembly.
  7. Solenoid
  8. Arc divider/extinguisher

***

Switch Gears

http://en.wikipedia.org/wiki/Switchgear

***

Protective Relays

http://en.wikipedia.org/wiki/Protective_relay

***

Theory of Induction Heating

http://www.gpgyjr.com.cn/uploadfile/20100226/20100226180358487.pdf

***

Induction Heating

http://en.wikipedia.org/wiki/Induction_heating

***

Induction Heating

http://www.fairchildsemi.com/an/AN/AN-9012.pdf

***

Induction heating

http://www.richieburnett.co.uk/indheat.html

http://www.neon-john.net/Induction/heater.htm

***

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s