Grounding and Bonding

08/12/2012 by 1 Comment

Earthing system is one of the important items for electrical installation used in domestic or industrial sector.This is for electrical safety purpose when current leakage happen.

With proper grounding system,people are protected from electrical shock and also to ensure residual current devices (RCD) or Ground Fault device (GFCI) activate properly.

Intentional grounding is required for the safe operation of electrical systems and equipment. Unintentional or accidental grounding is considered a fault in electrical wiring systems or circuits. read more

Filed Under: Earthing System Tagged With: , , ,

Definition of Surge voltage

30/10/2011 by 1 Comment

What is the surge voltage?For our easy understanding,electrical surge is a sudden high pick out of voltage value in the system.It can happened in electrical power distribution and communications lines entering homes,factory, offices, and other facilities.

The surges voltage happened due to natural factor such as lighting or human error.It can effected and can cause serious damage for any unprotected electronic device that connected to the power or communication lines.

Electronic products that are especially vulnerable to surges include microprocessors or micro controllers, such as computers, TV, server system, cordless telephones, and inverter. read more

Filed Under: General Tagged With: , , , , , ,

Electrical installation

24/07/2011 by 2 Comments

When we want to setup the new building or electrical application,it must have connection with electricity.So we need the electrical installation to make our application function properly and safety for human and equipment.

Theoretically electrical installation is a variation of electrical devices installed to achieve  specific purpose for any application.The key point that we must alert when dealing with the electrical installation is to take care necessary to ensure the safety of personnel and the protection of equipment from electrical faults.

So electrical installation is important subject that we must consider and get a clear view to avoid any injuries or damage for human or equipment.I want shared some information about electrical installation. read more

Filed Under: Theory Tagged With: , , , , , ,

Electrostatic level and prevention action

05/07/2011 by Leave a Comment

Electrostatic level is a sudden electric current flow from one material to another material.If we remember how to generated electro static using rod plastic and cloth on science lab class.

Theoretically  a voltage level for ESD can damage for any electronic component is around 100-500 Volt.For the very sensitive electronic components,normally it only can withstand around 25-170 Volt.

How we can known the Electrostatic damage (ESD) phenomena?Normally we possibility can hear a ”click” sound when touching an object or equipment.From the research possibility voltage generate for the “click” sound is at least 3.5 kV. read more

Filed Under: Theory Tagged With: , , , , , ,

Bathroom wiring regulations

16/06/2011 by 1 Comment

When we planning to wiring the bathroom,we must consider the several electrical wiring regulation are specified.In this room almost in wet condition can cause the electric shock if we not proper design according the regulations.

Basically bathroom containing a fixed bath tub,shower basin,sink ,etc.So with additional regulations,it can reduce the chance of electric shock due to wet condition.

Here i explain about some additional regulations used for wiring the bathroom.I hope i can be a guideline when we want install or design electrical wiring. read more

Filed Under: Wiring Techniques Tagged With: , , , , , ,

Two Point Method

01/02/2011 by Leave a Comment

This is another alternative method for earthing resistance measurement when excellent ground is already available.When we want to perform the measurement for earthing resistance in the compact room or tight area and want to put the two(2) auxiliary rod  may be a problem.

So..to solve this problem,we can use the two point method measurement.This measurement concept is two point into the ground in series technique used to the reading obtained.

The earth surface or other ground must be very low in resistance so that it will be negligible in the final measurement. The lead resistances will also be measured and should be deducted from the final measurement. read more

Filed Under: Earthing System Tagged With: , , , , , , ,

Voltage transformer

29/01/2011 by 9 Comments

This device is very common used in electronic/electrical industry in the world.Start from small transformer for electronic equipment until big transformer for High voltage  power transmission.Transformer is important device in our life every day.

The main purpose of voltage Transformer is a changing or “transform” the value of voltage ( single or three phase ) .

It can step up the voltage value ; example : 110VAC step up to 240VAC ( For power supply usage )  or 11 kVAC step up to 33 kVAC ( for power transmission).

It also can step down the voltage value ; example : 240 VAC step down to 24 VAC ( For rectifier power supply) or 11 kVAC step down to 415 VAC ( For Consumer power supply ). read more

Filed Under: Automation Tagged With: , , , , , , , ,
Next Page »