Software & Program & IPHONE

11KV CABLE SIZING AND SHORT CIRCUIT CALCULATION

2011-08-20T10:25:00.000-07:00

11KV CABLE SIZING AND SHORT CIRCUIT CALCULATION

Overview fault current calculation

Short Circuit calculation/fault current calculation in designing High Voltage system is important to determine the fault current at Main Switchboard (MSB) and also could be considered to calculate all the way up to Distribution Board (DB). Normally, I just calculate the fault current up to MSB only and the remaining downstream I just estimated according to standard condition.

To calculate the fault current we need to know the fault current at provider side. For Malaysia is Tenaga Nasional Berhad (TNB).

The calculation above has been developed using two (2) way of calculation which will provide the same result. 1) using resistance (ohm) and per unit (p.u). If we could see the above overview, there is two (2) section which is at the left side is using resistance calculation and the right side using per unit (p.u) calculation.

This calculation also could be used to determine the selection of the cable size for the High Voltahge (HV) cable and the conductor could be copper or aluminium. The calculation is based on the IEC standard. There is also complicated software that develops by ABB that could be used to determine the fault current and cable size. But that software also could be used to determine the selection of the breaker/switchgear/etc but as usual since that the software develop by the ABB so all the protection are based on the ABB protection devices.

I have been using this application / calculation for my Hotel and service apartment project in Shah Alam.

Result of the fault current calculation.

The calculations that develop above also include the selection of the busduct and cable for the Low Voltage (LV) section.

The preset criteria that I develop for the above calculation based on my current project which is as follows:-

First section: Provider HV Switchgear section (TNB)

Second Section: Owner HV Switchgear section

Third Section: Transformer section

Fourth Section: LV Main Switchboard section

CABLE TRAY SIZING CALCULATION

2011-08-19T22:27:00.000-07:00

CABLE TRAY SIZING CALCULATION

overview trefoil cable arrangement

It has been so troublesome to check and figure out the cable tray / trunking / ladder (cable support) size once the bosses requested us to do coordination works.

We need to ensure that the cable support is correct so that the routing and space requirement could be determined. Without proper cable support size it could be because the design space is too big or too small.

However, this cable support sizing program just for reference only and not for absolute design. I have been using this application for some of my project and it seems that workable. As a designer we has to bold enough to determine the space requirement and nowadays client are not just like before, they are also engineers. So, bear in mind that “DO NOT SIMPLY GIVE AN ANSWER TO THE CLIENT IF YOU ARE ALSO NOT SURE” unless you already know that your client are not a technical person.

overview 2 x 2 cable arrangement

There is three type of cable installation for the cable laying on the tray or ladder. Which is as follows:-

1. Trefoil

2. 2 x 2 arrangement

3. Flat laying

Most of the contractor, they will try to arrange the installation of the cable to ensure the size of the cable tray / ladder is minimum. Normally they will go for 2 x 2 cable arrangements. So, I also develop a copy of the program that it could calculate based on the 2 x 2 arrangement. I could say that having the 2 x 2 arrangement will give you space saving approximately 20%, and subject to nos. of cable installed.

PLEASE DONATE OR BUY TO DOWNLOAD CALCULATION HERE.
ONCE YOU DONATE OR BUY I WILL EMAIL TO YOUR MAIL ADDRESS.. PLEASE SENT YOUR EMAIL ADDRESS TO ME

NEW CALCULATION RELEASE 2011

2011-08-09T17:17:00.000-07:00

IT HAS BEEN SO LONG THAT I AM NOT UPDATING THIS BLOGSPOT. DAY-BY-DAY WORK LOAD BECOME MORE AND MORE.... WHAT TO DO I AM A RED RACE.... HAVE TO WORK HARD TO GET WHAT I WANT .....

DUE TO MY HEAVY WORKLOAD I NEED TO THINK HOW TO SHORT CUT MY WORKS SO THAT EACH RESULT COULD GET FASTER AND EASIER...

SO ... I MANAGED TO CREATE ANOTHER A FEW NEW CALCULATION THAT MIGHT BE USED FULL TO EVERYBODY ....

FOLLOWING IS MY NEW CALCULATION THAT I COULD CREATE TO MAKE MY WORK EASY AND FASTER ....

1. CABLE TRAY SIZING CALCULATION

2. VOLTAGE DROP CALCULATION FOR ALUMINUM CABLE & FIRE RATED CABLE

3. FAULT CURRENT FOR H.V SUPPLY TO L.V

4. CABLE TRUNKING SIZING CALCULATION

DUE TO THE PREVIOUS VOLTAGE DROP CALCULATION ONLY CAPABLE TO CALCULATE UP TO 1200A ONLY, I DECIDED TO CREATE A SIMPLER VERSION OF THE VOLTAGE DROP AND CABLE SIZE CALCULATION FOR CATER FOR HIGHER CURRENT RATING.

LUCKILY I GOT THIS SOFTWARE ... SO I COULD MANAGE TO DESIGN MY SYSTEM EASILY EVEN THOU STILL NEED TO AMEND DUE TO MECHANICAL LOADING ALWAYS FLUCTUATE (????) . DON'T ASK ME WHY ... BUT IT ALWAYS HAPPEN ...ONCE DESIGNING WITH MECHANICAL ENGINEER ... ESPECIALLY IN AIR CONDITIONING DESIGN.

SO ... GOT TO GO FOR MY SRI ACAPPELLA (III) MEETING, WHICH TARGETED TO BE CALLED TENDER ON MID OF AUGUST 2011... HOPE CAN MAKE IT....

IPHONE SOURCES

2011-07-10T22:35:00.000-07:00

I HAVE BEEN USING THIS SOURCES FOR SO LONG AND IT SEEMS TO BE VERY USEFUL & LOT OF THE APPLICATION AND TWEAKS TO MY IPHONE COULD BE DONE.

THIS REPOS. INCLUSIVE OF LEGAL AND ILLEGAL WHICH IS REQUIRED ALL USER TO WISELY USE THE APPS INSTALLED.

IF THE APPS THAT INSTALLED IS USEFUL AND INTERESTED TO BE USED, PLEASE BUY IT DON'T STEAL IT ...

WE HATE PIRACY ...

HTTP://REPO.BITEYOURAPPLE.NET

HTTP://HACKSREPO.COM

HTTP://REPO.INSANELYI.COM

HTTP://SINFULIPHONEREPO.COM

HTTP://APT.XSELLIZE.COM

MUST HAVE Application for IPHONE

2011-07-10T21:51:00.000-07:00

LAST PART

17. PLAYAWAKE - TIRED LISTENING TO DEFAULT ALERT PROVIDED BY IPHONE FOR YOUR ALARM.. SO PLAY A MUSIC FOR IT ... THIS APPS COULD ALLOW YOU TO PLAY MUSIC FOR YOUR ALARM CLOCK ...

18. REMOVE BACKGROUND
- SO ANNOYING... YOUR PHONE RAM NOW BECOME SLOWER AND SLOWER ... ACTUALLY THERE IS A APPLICATION STILL RUNNING IN THE BACKGROUND ... BY DEFAULT ... TO KILL IT... YOU HAVE TO KILL ONE BY ONE ...

NO LONGER REQUIRED ONE BY ONE KILLING --- SINGLE SHAKE KILL ALL .. OR IT COULD BE SINGLE TAP KILL ALL ----

19 SBSETTING - REALLY MUSTHAVE
- THIS IS A MUST FOR A JAILBROKEN IPHONE .... EASLY ON / OFF SETTING JUST VIA SINGLE TAP ....

MUST HAVE Application for IPHONE

2011-07-10T21:30:00.000-07:00

PART 3

10. BITESMS - THIS APPLICATION USEFUL FOR MY 'SMS'ING .. VERY CONVENIENCE. NOT EVEN NEED TO GO THROUGH SMS ICON TO REPLY THE SMS. JUST TAP 'REPLY ' AND KEEP ON TYPING ... AND SENT .... SO EASY ....

11. CALL ME
- NEED TO CALL YOUR FAV. CONTACT WITHOUT GOING THROUGH THE PHONEBOOK ... SO INTALL THIS APPS ... VERY GOOD AND FAST THOUGH .... YOU COULD CREATE YOUR FAV. CONTACT ON YOUR SPRINGBOARD AND EVEN COULD LOCATED IN SIDE YOUR PERSONAL FOLDER...

12. FILE2MAIL
- I HAVE BEEN USING THIS A LOT, SINCE I NEED TO FORWARD FILES THROUGH EMAIL. DUE TO I AM RECEIVING AND EMAILING FILE THROUGH MY PHONE MOSTLY THIS APPS IS A MUST FOR ME ...

13. IFILE
- WITHOUT THIS I COULD NOT TRACE MY FILES IN MY PHONE. THIS APPS ALLOWED YOU TO SEARCHING THROUGH YOUR PHONE FOLDER BY FOLDER .. SO YOU COULD STORE FILES EVEN YOUR MOVIE / SONG JUST LIKE YOUR THUMBDRIVE. THE ONLY THING IS YOU NEED IPHONE EXPLORER TO TRACE BACK YOUR FILES IF YOU WANT TO TRANSFER THE FILES IN OR OUT IN THE IPHONE FOLDER.

14. INSTALLOUS
- 1ST CHECK THE PAID APPS FROM THE APPSTORE AND 2ND CHECK THE SAME APPS IN THE INSTALLOUS AND DOWNLOAD... AND .... INSTALL... YOUR PAID APPS FROM APPSTRORE NOW BECOME FREE... :) ... HE HE .. NICE ...

PLEASE NOTE THAT .. IF YOU ARE INTERESTED WITH THE APPS THAT YOU DOWNLOAD FROM INSTALLOUS PLEASE BUY IT FROM APPSTORE. DO NOT STEAL IT ....

WE ARE NOT SUPPORT PIRACY ...

15. MCOOLPHONE
- ANNOYING PEOPLE CALLING WHILE YOU ARE IN THE MEETING. NO MORE .. JUST FLIP YOUR PHONE AND IT WILL SMS YOU CALLER WITH YOUR CREATIVE TEMPLATE SMS TEXT " I AM ON SOMETHING PLEASE CALL BACK LATER"...

THIS APPS CAPABLE TO ANSWER THE CALL VIA SHAKING YOUR PHONE...

TO BE CONTINUE ........

MUST HAVE Application for IPHONE

2011-07-10T19:29:00.000-07:00

PART 2

6. SPEED INTENSIFIER
- THIS APPLICATION COULD ACT YOUR PHONE WITHOUT ANY LAGGING ... EVERY APPLICATION THAT YOU LAUNCH WILL JUST POP UP WITHOUT ANY DELAY ...

7. YOUR TUBE
- YOUR TUBE IS A ADD ON TO THE YOUTUBE THAT COULD HELP YOU TO DOWNLOAD YOUR MOVIE TO YOUR PHONE NOT LIKE A UNLIMVIDEO BUT TO DOWNLOAD YOUR FAVORITE YOUTUBE MOVIE ...

8. ACTIVATOR
-ACTIVATOR IS AN ADD ON TO ADD MORE GESTURE TO YOUR ACTION OF THE IPHONE ... IT VERY USEFUL IF YOU ARE NOT WILLING TO GLANCE THROUGH EVERY FOLDER TO GET YOUR APPLICATION.

9. ANYRING
- I THINK EVERYBODY LOVE THIS APPLICATION, NO NEED TO TRIM AND CREATE RINGTONES BUT JUST TAP ON IPOD MUSIC AND IT WILL RING FOR YOU... SOO NICE .. PERSONALLY I LOVE THIS APPS....

10. ATTACHMENT SAVER
- LOVE EMAILING ? AND NEED TO DOWNLOAD YOUR ATTACHMENT?? SO ADD THIS IN YOUR PHONE.

TO BE CONTINUE FOR PART 3......

MUST HAVE Application for IPHONE

2011-07-10T18:45:00.000-07:00

IT HAS BEEN SO LONG NOT UPDATING MY BLOG SINCE SO BUSY WITH TENDER AND DESIGN PROJECT.

TODAY 11/07/2011, I AM GOING TO ADD IN MY PREFFERED 18 APPS AND ADD-ON IPHONE APPLICATION THAT COULD BE GET FROM THE CYDIA.

1. OPEN SSL/SSH

2. FOLDER ENHANCER
- THIS APPLICATION VERY USEFUL AND ATTRACTIVE, YOU COULD SET YOUR FOLDER TO SUIT YOUR THEME AND LOOK VERY ELEGANT.

3. LOCKINFO
- NO MORE NEED TO GLANCE YOUR CALENDER TO LOOK UP AT YOUR SCHEDULE MEETING, JUST A SINGLE TOUCH YOU WILL ABLE TO SEE YOUR NEXT MEETING OR SCHEDULED INFORMATION... MORE PLUG-INS COULD BE ADD IN .. AS YOU WISH...

4. LOCKTOPUS
- THIS APPLICATION COULD HELP YOU TO LOCK / PASSWORD YOUR PERSONAL APPLICATION (ESPECIALLY IF YOUR PHONE IS USE BY YOUR CHILD TO PLAY GAMES).

5. SAFARI DOWNLOAD MANAGER
- WITH THIS ADD-ON TO THE IPHONE SYSTEM YOU COULD DOWNLOAD ALL SORT OF FILES TO YOUR IPHONE. SO THAT YOU COULD GET THE FILE VIA IPHONE EXPLORER IN YOUR PC OR LAPTOP.

- MEANS THAT YOUR COULD DOWNLOAD YOUR FILES WITHOUT NEEDED THE PC OR LAPTOP. YOU HAPPY DOWNLOAD ON TO GO ....

CONTINUE .....................

ASTRO Byond Installation

2010-05-17T22:03:00.000-07:00

As earlier blog i have explain the option that can be considered for the Astro Infrastructure Installation.

Now, i will show you the diagrammatic for the installation (concept). Due to the signal of Astro Byond (HD) is different with existing Astro SD so the installation also differ.

The diagrammatic is only for single tenant unit and for Dwelling unit only.

For single tenant unit shall be as follows

For Dwelling unit shall be as follows

ASTRO Byond

2010-05-07T00:07:00.001-07:00

ASTRO Byond

It has been a 2 weeks already for me to digest and discover how to design the SMATV system that can received Astro Byond services. Previous SD Astro is very simple compare to latest Astro HD which is totally different design and parameter.

There is 2 type of configuration that can be done which is :-

1. 4 nos. of coaxial

2. 1 no of SM fibre

OPTION 1 : 4 nos of coax.

This configuration has been used for so long already, if you are flash back years years ago this arrangement has been implemented, but it not as easy as we thinks of, could you imaging that 4 cable from LNB shall be bring down all the way in the riser and split or tap using special tap to ensure the dB drop are acceptable.

Just imagine the conventional SMATV configuration (using 1 no. of Coaxial) but you need to multiply with 4 nos. it still wont congest your riser but i could not imagine that how many of booster and tap require to be in placed due to the multiple cable going down. And to calculate the dB drop for this system also not so simple. it takes days to ensure each point can receive of the minimum 62dB at the end point.

This configuration is suitable for small scale of development maybe 5 to 6 storey and the SMATV point provision in the unit is minimum.

To make short in my OPINION this arrangement should not be use.

OPTION 2: 1 no SM Fiber

This configuration is the most simpler way to do, don't have to think of the distance, don't think MUCH on losses -- but still need to calculate the drop--- its very flexible .. but its got limitation because each sat disk only can cater for up to 32 multi switch only. but no worry because the each multi switch can serve 16 outlet (recommended), or 28 outlet (not recommended). which mean it can serve up to 512 SMATV outlet (recommended) or 896 SMATV outlet (not recommended).

this configuration can be very cheap and it also can be a bomb. depend on the design requirement.

Based on my finding (actually based my project), for luxury condominium, or so call dwelling unit the cost of installation of this system can be seems like ridiculous ... but it also can be very reasonable depend on client requirement.

For my case, each condo unit consist of more than 9 TV point even 13 TV point which is connected to centralized SMATV system, if all the point need to be ASTRO Byond ready (requirement 1)the cost of the installation of the system is BOMB... but if only 1 TV point in the condo unit require ASTRO Byond ready (requirement 2) the installation cost gonna be very cheap, its about 85% cheaper compare to requirement 1

I will expalain further how to design the infrastructure for this system later ...

SORRY .....

2010-03-09T21:15:00.000-08:00

IT HAS BEEN SO LONG I HAVE NOT UPDATE MY BLOGSPOT DUE TO THE COMMITMENT I HAVE ....

PAST 2 YEARS I HAVE BEEN WORKING ON FEW PROJECT THAT I REALLY NEED TO TAKE FULL INTENTION WITHOUT FAIL...

WHAT KIND A LIFE .... I EVEN GOT NO TIME TO DRIVE MY RC CARS .... "ACTUALY ALSO LOOKING FOR NEW CAR .. FOR ME AND MY SON.... "

SO, I AM VERY SORRY TO ALL FRIENDS THAT ASKING ME ABOUT THE SOFTWARE THAT I LOAD IN ... EVENTHOU SOME OF THE LINK IS ALREADY BROKEN ... WHICH IS I LOAD IT IN THE FREE STORAGE SPACE AVAILABLE IN THE NET ....

I AM IN PREPARATION OF SUBSCRIBING STORAGE SPACE WHEREBY IT MIGHT BE A GOOD PLACE TO PUT ALL MY SOFTWARE ...

BEFORE THAT ....

IF I SUBSCRIBE THE SPACE I NEED TO ASK TO ALL THE VISITOR OPINION .....THAT .. IT IS POSSIBLE FOR YOUR GUYS DISTRIBUTE SOME RM (RINGGIT MALAYSIA) .. DONT WORRY IT WONT BE MORE THAT RM5.00.

CURRENTLY I GAVE TO ALL MY VISITOR FREE SOFTWARE ... WHICH IS THIS SOFTWARE ACTUALLY FOR YOUR KNOWLEDGE ....

SOME OF THE FREEWARE I SHALL NOW CONVERTED TO SHAREWARE.

AS YOU KNOW ... ONCE I SUBSCRIBE THE STORAGE SPACE I NEED TO PAY FOR THAT STORAGE .....

REGARDS
THE OWNER