How to setting the timer for star delta starter?

How many second we need to setting for changeover timer from STAR to DELTA sequence for Star Delta Starter?This question is very popular among electrician around the world when handling the Star Delta Starter for their application.

From my experience,honestly,it quite difficult to get the accurate times for star delta changeover.But we can get the approximate times with several monitoring technique and measuring equipment to decide the best setting for change over timer of Star Delta Starter.From this post,i would like to share some information and basic technique how to get the approximate times for Star Delta Starter change over timer.I hope from this post,it’s can give some ideas or clear view how to setting the times for Star Delta Starter change over timer.

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Motor Protection : Over temperature

Motor temperature is one of the factor that we should monitor and make sure it running in a normal range.It is closely related with winding temperature.If temperature is highly from standard value,it can cause a winding insulator damage or weak.

From that damage,it will make the internal short circuit between winding phase and can cause a serious damage for an electric motor.

What is the main reason for the motor overheat or over temperature?Normally it cause due to a high ambient temperature,under sizing motor capacity,not suitable voltage rated,running in overload and bearing jammed. read more

Procedure to change a new electric motor

The main purpose of this 16 steps  is to look at the systematic and proper work sequence on disconnecting the wiring,check the motor nameplate, specification when replacing the motor until complete the task.

I would like to share my routine standard procedure for replacing a new motor.I created this procedure follow the safety guideline and reference from my experience in electrical motor installation.It have 16 steps that can ensure the installation jobs will done in safety and proper way to contribute the quality of works.

I hope this procedure can give some basic reference and guideline for all of you how to change a new motor.Please share a comment or suggestion to improve this procedure. read more

How to change rotation for Star Delta Starter?

Electric motor have a two side of rotation.It is clockwise and anti clockwise or normally we call it forward and reverse rotation.An equipment or machinery that connected to electric motor have a rotation depend on manufacture design and application.

Common rotating equipment that we can found at our surrounding area such as pump,air-compressor,water jet and etc.Normally manufacture put a sign or arrow for rotation to avoid their equipment not install in proper way and can avoid serious damage or malfunction.

During installation and wiring termination,we must check and verify our rotation for equipment either it is forward or reverse rotation to avoid any problem or malfunction after completed installation works. read more

KEYENCE Laser Sensor LR

As we know,many types of sensor used for input device for equipment,machinery,robotic and others application to made works more easy,low human failed and automatic function.

This time i want share about Laser Sensor LR-Z series from KEYENCE,Japan.This laser sensor is the one of my favorite for machine application because it is user friendly,simple setup,high durability,heavy duty,long life span,unique design and also up to date technology. read more

Types Of Motor Enclosures

The main purpose of motor enclosure is to provides protection from environment  impacts such as rain,corrosive,rusty and many more in which motor installed.

This protection can make motor more life span and can running in suitable condition.It also provide a types of cooling system for a motor depend on their types of enclosure.

Before we select a motor enclosures for our application,please review about location,types of environment impact and ambient temperature to avoid any mistaken. read more

Voltage Verification R-3W

Electrical shock is the major factor contribute to injury and more serious death statistic for electrical incident around the world.We can’t assume are is present or not because it is not visible and can look with naked eyes.

Electrical safety principle is to keep away person from live voltage.For electrical person,they need to clarify voltage value is safe or not before proceed any maintenance and repairing activity to avoid electrical shock using a multimeter.

To minimize the electrical shock incident,some country have the new standard and regulation for machine and power panel safety installation such as to install the Voltage Verification. read more