1.
Condition Monitoring in Low Voltage Circuit Breaker Technology
Overheating is the single biggest cause of failure in switchgear. Modern circuit protection is provided by digital overcurrent relays which are operated by current, not heat so abnormal heating caused by loose connection bolts, ventilation failure or worn contacts is usually left undetected by conventional circuit breakers. This can lead to pre-mature failure of switchgear and also constitutes a potential fire hazard. Thermal imaging can help prevent this but is only valid for that ‘snapshot’ in time. Continuous condition monitoring of the temperature of switchgear can substantially minimise down time of the installation and reduce the risk of fire.
Condition Monitoring in Low Voltage Circuit Breaker Technology
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2.
Why the Protection of Generators Needs Special Consideration
Generators differ from other electrical power sources in their ability to withstand electrical overloads and fault currents. These differences should be respected when selecting and setting circuit breakers which protect generators.
Terasaki have prepared a designed guide that explains the parameters of generators and circuit breakers which should be considered when selecting and setting circuit breakers which protect generators.
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3.
Circuit Breaker Selection was affected by "Seventeenth Edition" Amendment from the First of July 2015
A new compensation factor, Cmin, has been included in the UK regulation for protection from electric shock. Terasaki has produced a technical guide on this factor, explaining common reasons an elecrical design may not meet the "Requirements for Electrical Installations" IET Wiring Regulations Seventeenth Edition. BS7671:2008 and the solutions offered by Terasaki.
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5.
Double Opening and Double Closing Coils
An article in PDF about Terasaki ACBs’ double breaking and opening coils. These may be used in datacentres and UPS to increase the reliability of the entire electrical system.
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6.
How To Choose a Circuit Breaker
A helpful guide in PDF format on how to choose the correct circuit breaker for a certain project: Air Circuit Breaker or Moulded Case Circuit Breaker. This article can be used for publishing in your local magazines or provided to specifiers.
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7.
Retrofitting of Low Voltage ACBs New for Old
Read more about retrofitting ACBs in an article about Retrofitting a modern low voltage air circuit breaker being cost and time effective solution to this growing dilemma.
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8.
Safe Switchgear Specifications Paper
This paper will update the professional electrical engineer on the safe application of low voltage MCCB technology and will examine thoroughly protection disciplines, isolation principles and future trends for MCCBs.
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9.
The Application of Circuit Breakers to Reduce Downtime in Datacentres
This paper will describe circuit breaker selection methods and available circuit breaker technology which can contribute to reduced downtime in datacentres. It is divided into issues related to topology (or system layout) and sustainability (performance over time).
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