Bad workmanship, Electrical Engineering

Bad Workmanship

Bad workmanship contributes importantly towards increasing distribution losses. Efforts should, thus, be made to have the best probable workmanship. In this context the following points should be borne in mind:

i) Joints are a source of power loss. Thus, the number of joints should be remaining to a minimum. Proper jointing methods should be used to ensure firm connections.

Quite often joints are made through wrapping the conductors along with GI wires. In case PG clamps are used, the PG clamps should be of adequate size and GI nuts/bolts with spring washers should be used. All PG clamps required a re-tightening after around 1 year as the clamps become loose and a layer of coating gets deposited in the contact surfaces. It is, therefore, best to have sleeve joints and crimp the joints along with a crimping tool.

Although making the joints, the two ends of the cut out stranded conductor will tend to get loose. The recommended practice is to wrap the loose ends tightly using GI wire before making a joint. Loose strands are frequent a cause for heating and related damage. For mid-span joints, tension jointing of bundles in mid-span must be prevented. At erection, while a choice exists, the bundles must be joined at the non-tension bond position of a pole top. For shackle joints, the jumper connector at shackle points is better along with PG clamps other than it is advisable to use crimped or fire wedge connections.

ii) Connections to the transformer bushing-stem, isolator, drop out fuse, and LT switch and etc. should be periodically inspected and proper pressure managed to prevent sparking and heating of contacts.

iii) Replacement of deteriorated services and wires should also be made in a timely manner to avoid leakage and loss of power.

 

Posted Date: 2/6/2013 6:07:05 AM | Location : United States







Related Discussions:- Bad workmanship, Assignment Help, Ask Question on Bad workmanship, Get Answer, Expert's Help, Bad workmanship Discussions

Write discussion on Bad workmanship
Your posts are moderated
Related Questions
Altavox is a manufacturer and distributor of a lot of electronic instruments and devices, including digital/analog multimeters, function generators, oscilloscopes, frequency counte

Q. Digital watches display time by turning on a certain combination of the seven-segment display device. (a) Show a typical seven-segment display. (b) Develop a truth table f

Explain the Alphanumeric Coding - bcd to decimal conversion? For the inherently binary world of computer, it is necessary to put all symbols, letters, numbers, and so on into bin

A heater element is made of nichrome wire having resistivity equal to 100 × 10 -8 ohm-m. The diameter of the wire is 0.4mm. Calculate the length of the wire required to get a resi


I WANT TO KNOW WHAT IS THE THORY OF PLOTTING V-I CHARACTERISTIC CURVE OF SILICON DIODE ???

Q. What is a positive clipper? Explain its action with the help of a circuit. A positive clipper is the circuit which is used to cut off the positive half cycle. The circuit wi

Explain the NEG instruction. NEG: Two's complement or arithmetic sign inversion (NEG). The NEG instruction two's complements a number that means that the arithmetic sign of a

Each of the following functions is abs(H(jw))^2 of a certain network function H(s). Obtain all the possible H(s) for each given abs(H(jw))^2. [(w^4)+25]/[(w^4)+(12w^2)+49]

Q. What is Message Demodulation? The major advantage of the conventional (standard) DSB AMsignal transmission is the ease with which the signal can be demodulated. Themessage s