.: Arif Yulianto :.

12 Hari Dalam Seminggu

Arif Yulianto — Mon, 09 Feb 2009 01:59:25 +0000

Minggu ini adalah kali kedua saya merasakan 12 hari dalam satu minggu. Karena saya belum merasakan melewati hari sabtu dan hari minggu..

Load List Study

Arif Yulianto — Thu, 22 Jan 2009 02:12:15 +0000

Load list study is a calculation method to get a design capacity for electrical system. From this study we can get all electrical equipment rating, such us generator, transformer, bus bar rating etc. This study is just a simple calculation, we only add the load with their electrical duty (not the load rating).

For example:

Water well pump with rating 30kW, but only consumed 26.5kW electrical load. We choose the consumed load for our calculation (26.5kW)

Beside load rating, there also a load activity. In here we divide into three categories, there are continuous, intermittent, and standby. Load activity is needed to get the load contribution to our electrical system. We multiply the electrical duty, with some multiply factor (MF) depend with the load activity.

The calculation results are average load, maximum load, and design load. Average load is the normal power consumed in our system. Maximum load is the normal load, with the operation of largest standby unit. Design load is the equipment design rating.

Step by step:

1. Prepare all load, at least their power rating, consumed load rating, and load activity.

2. Classify all load into their load activity in different column.

3. Summary all load in each load activity.

4. Calculate the load with this formula

Average load (AL) : (Summary continuous load) + (MF for intermittent load)x(Summary Intermittent load)

Maximum load (ML) : (AL) + 110%x(Largest standby unit)

Design load (DL) : (MF for design load)x(ML)

MF for intermittent load usually between 0.5-0.6

MF for design load usually between 110%-120% (spare for design)

Last, you’ll get the electrical equipment rating by considerate the design load.

CMIIW

To Riha & Dana

Arif Yulianto — Fri, 02 Jan 2009 01:00:59 +0000

Congratulation for your wedding.

Barakallahulaka wabaraka alaik. Wajami’a bainna kumma fi khair…

Hope you’ll be a happy family, sakinnah, mawaddah, warahmah.

And you’ll get hansom, beautifull, shaleh & shalihah children.

I’ll wait for other good news from you

1st day in the office

Arif Yulianto — Fri, 02 Jan 2009 00:53:18 +0000

This day, is the 1st day i work in this office at this years. I still feel a holiday here. I can’t find traffic in the road like usually I get. Hmm..Jakarta is very nice at this momment, but I think it wouldn’t be long. Because next week, every school will start the new semester, every worker will go to the office again after long…long… holiday.

Hmm…I have a new spirit, and new hope in this year. Include new spirit to start again write in a blog.

Welcome again ^_^