Sunday, June 25, 2017

When engineers make Ketupat

Ahh...don't you just love the details engineers put into things you thought were plain simple.

Malaysia's Ketupat

The Ketupat - type of rice dumpling or rice cake - is one of the popular Malay delicacies that have been listed as heritage food in Malaysia. The Ketupat, when translated in English, is literally a made from glutinous rice.

It’s usually wrapped in a triangular shape using the leaves of the fan palm Licuala. Wrapped in a pouch of woven palm leaves, is then boiled for hours. As the rice cooks, the grains expand to fill the pouch and the rice becomes compressed into soft cakes.

In Malaysia, Ketupat is also traditionally served by Malays at open houses on festive occasions such as Idul Fitri (Hari Raya Aidilfitri).

Selamat Hari Raya Aidilfitri from The Green Mechanics
Kota Kinabalu,
25 June 2017

Credit to: (i)Hollidays in malaysia - click for more info
(ii)Anonymous - for the image/drawing (via whatsap)

The copyright owner of the image may come forward to identify that this image is theirs and that in no circumstances should be publish unless otherwise stated, to which the administrator  shall be obliged to remove such image from the website.

Thursday, June 15, 2017

XLPE insulated cable - Current rating

I am currently working on a pump replacement project; specifically reviewing the motor control centre with the view to upgrade them from the current resistance starter to variable frequency drive, VFD. I've gotten some quick references and information from a couple of sites that would be handy for my personal use and I hope the website owners are fine with it.

The resistance starter was fine, reliable and lasted but with the availability of VFD at reasonable price, coupled with the prospect of energy saving for such starter, it is a viable option for the premium efficiency motor manufactured by Nidec.

Exactly my interest is on the 630mm2, XLPE 1/C, multicore 300mm2 and 400mm2 armoured cables.

For more info of this cable, see link at the bottom of the article.

Table 1: Single-core XLPE insulated un-armoured cable

Table 2: Four-core XLPE insulated, armoured cable

Hopefully this job will be completed by year end and I can have some time blogging again.

Note: This will be for my own use. If you are looking for current carrying capacity/rating of other cable types, head over to Electrical Notes, link given below.

Credits & references:
Electrical Notes
Universal Cable (M) S/B