OLH Flashcards
Wooden pole
تير برق چوبي
Hang: /hæŋ/
The simple structure consists of a wooden pole having more than one arm. The arms are used for hanging the wires.
آويزان شدن،آويختن،چسبيدن به
Concrete: /ˈkɒn krit/
Other structures that are common in use are tabular steel poles and concrete poles
بتن
واقعي،به هم چسبيده
Tabular steel poles: /ˈtæb yə lər/
Other structures that are common in use are tabular steel poles and concrete poles
جدولي
Lattice tower: /ˈlæt ɪs/
The lattice tower consists of two forms.
شبكه،شبكه بندي،توري منظم
برج(پايه) شبكه اي
Pyramidal structure: /ˈpɪr ə mɪd/
The first one is a pyramidal structure having cross arms extended outside, the second one is a pyramidal base having four support points extended outside.
هرم
شكل هرم ساختن
سازه هرمي
Infrastructure : /ˈɪn frəˌstrʌk tʃər/
Electrical grid infrastructure
زيرساخت
شالوده،زيربنا
زيرساخت شبكه برق
High voltage electricity
برق فشار قوي
Component: /kəmˈpoʊ nənt, kɒm-/
OHTL contains 3 important components, Insulators, towers, and conductors
جزء،
مولفه،تركيب كننده
Insulator: /ˈɪn səˌleɪ tər, ˈɪns yə-/
Insulators get dirty due to environmental pollution and dusty weather. Visual inspection could be done without power isolation because you could inspect them from a safe distance.
مقره
عايق
عايق كننده
Flash-over:
In electric power transmission, a flashover is an unintended high voltage electric discharge over or around an insulator, or sparking between two or more adjacent conductors. A flashover is an electric discharge over or around the surface of an insulator.
As you know dirty insulators may pass electrical current as a flash-over
تخليه الكتريكي
The cleaning insulators process takes two forms. One is by direct contact with it and using a piece of dry and smooth clothing, in this case, power must be isolated.
Precaution: /prɪˈkɔ ʃən/
Insulator replacement could be done without power isolation but, with great precautions and special isolated tools.
احتياط،
اقدام احتياطي
پيشبيني
Aging: /eɪdʒing/
Due to aging and windy weather besides short circuits and lightning strikes the overhead power line conductors are cut.
سالخورده،كهن،كهنه
Splice: /splaɪs/
we used splicing device to connect a cut OHTL wire, and we found the splice itself broken during visual inspection.
چسباندن،با هم متصل كردن،پيوند كردن