برق کار شبانه روزی تهران رفع اتصالی فیوز برق فوری و انی با تکنسین وارد و ماهر برق امداد برق تهران تلفن۲۲۵۸۶۱۳۵-۷۷۲۲۷۲۰۵ شرق تهران برقکار شبانه روزی
برقکار در پاسداران – برقکار سیار شبانه روزی در اندرزگو -خدمات برق شمال تهران ۲۲۵۸۶۱۳۵
برقکار شبانه روزی در غرب تهران شهرک غرب رفع اتصالی برق و فیوز برق عیب یابی با دستگاه در کمترین زمان ۲۲۵۸۶۱۳۵ برقکار در بلوار عدل اشرفی پونک تهران فوری.
برق کار شبانه روزی تهرانپارس-۷۷۲۲۷۲۰۵ برق امداد امداد برقکار ساختمان در شرق تهران خیابان ۱۹۶ شرق و غربی برقکار در تهرانپارس شرقی و غربی نرسیده به پروین -فلکه اول تعمیرکار برقی در فلکه های شرق و۷ حوض.
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Protective and building safety systems
Implementation of camera installation and image transfer over the Internet
Installing a firewall and announcing a house theft
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- برق کار نیاوران قلهک برقکار سعادت آباد شهرک غرب برقکار شبانه روزی
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The combustion temperature is T1. Each gas data must be thoroughly pretreated
Determine the equipment
Electrical equipment suitable for use in hazardous areas should be marked with a mark
It provides protection. The mark starts with the sign where it came from
Internationally agreed to show the protection of the explosion, still with the type, and
Where it relates to the group that has been approved for this equipment and with it
Temperature classification. An example of the tagging would be Ex d IIB T5.
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رفع اتصالی فیوز برق فوری و انی با تکنسین وارد و ماهر برق امداد برق تهران تلفن۲۲۵۸۶۱۳۵-۷۷۲۲۷۲۰۵ شرق تهران برقکار شبانه روزی
Equipment will also be marked with atex CE 0000 II 2 G mark. CE suitable for use
In the European Association, 0000 Registration Number for the Certificate Examination, II
Anti-explosion, 2 floors and G suitable gas TLRPHONE 02122586135 – 02177227205
Almost all of the accessories described in this chapter include switches, sockets
And boxes, are available in versions with different risk protection classes.
امداد شبانهروزی متخصصان حرفهای برق،آیفون،کولر،تلفن
Distribution equipment and decorative lights, which are discussed in Chapters 6 and 7
Available in a variety of protection options.
Designing Electrical Services for Buildings 24
The enclosure is used to preserve the soil, dust, moisture and kicking fingers.
This is a separate issue of explosion protection; a piece of electricity
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Equipment may be installed outdoors and protected against weather
There is no risk of explosion, or it may be non-flammable inside a specific dusty appearance
An internationally agreed system for determining the degree of education has been developed
The protection is provided by the enclosure. This includes IP letters and two digits.
These letters are for international protection, and the digits indicate the degree
Protection The first digit, which may range from 0 to 6, describes the protection against
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The entry of solids of the second digit, which may range from 0 to 8, describes the protection
Against the entry of liquids. In both cases, the larger number is its degree
Protection Definitions of protection levels are given in Tables 1.3a and 1.3b
Which is based on BS EN 60529. Specifications for the degree of protection provided by
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Enclosure (IP code).
This classification procedure can be applied to all equipment used in this area
The season and distribution equipment and lighting discussed in Chapter 6 and 7.
So the area that remains rain may be set to 1P23 while the one is
The jetproof can be 1P55.
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Table 1.3a Protection of individuals against contact
With live or moving parts inside the compartment
Protecting equipment against solid penetration
External body (protection against contact with
Moving parts inside the enclosure are limited to
Contact moving parts inside the compartment
Which may harm people)
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Degree of protection
۰ Protecting people against contact with living or moving parts inside
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Protection of equipment against the entry of solid bodies is not solid.
۱ Protection against accidental or indirect contact with live or moving parts
For example, inside the chamber by a large surface of the human body
Hand, but not protection against deliberate access to such parts.
Protection against the entry of large exterior bodies.
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۲ Protection against contact with live or moving parts in the chamber by
Protection against moderate interior solid bodies.
۳ Protection against contact with live or moving parts in the enclosure by
Tools, cables or objects with a thickness of more than 2.5 mm.
Small penetration protection.
۴ Protection against contact with live or moving parts in the enclosure by
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Tools, cables or objects with a thickness of more than 1 mm.
Small penetration protection.
۵ Full protection against contact with live or moving parts inside
Protect against harmful dust deposits. The entry of dust is not complete
But the dust can not enter sufficient amounts to interfere with it
The satisfactory operation of the equipment is enclosed.
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۶ Full protection against contact with live or moving parts inside
Protection against dust penetration.
Table 1.3b Protection of equipment against entry
From the liquid
Degree of protection
۰ without protection
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۱ Liquid water droplet protection:
The drops of compressed water in the compartment should not be harmful
۲ Liquid droplet protection:
A falling liquid droplet should have harmful effects on the compartment
Angled up to 15 degrees at any angle from the vertical.
۳ rain protection: ۲۲۵۸۶۱۳۵ telephone barghemdad tehran
The rain falls at an angle of up to 60 degrees, depending on the vertical
Should have harmful effects.
۴ Saturation Protection:
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The spray fluid should not have any harmful effect in any direction.
۵ Protection against water jet:
Water is declared by a nozzle of any direction
Conditions are not exposed to any harmful effects. Protection on deck conditions (deck equipment): Water from heavy seas should not enter the compartment in the permitted range. ۷ Protection against immersion in water: Water must not be entered into the compartment below the declared pressure and time conditions.
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Electricity is shipped in metal conductors that must be insulated as well
Must be protected from mechanical damage. When the conductor is insulated
A piece of electrical power can be converted into a cable. This
The nomenclature makes a simple and logical distinction between a bare conductor and a
Insulated cable, but in practice the term “conductor” and “cable” are actually used
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It is an alternate and only field that explains what is being referred to.
We will try to avoid confusion and first discuss the conductors and insulations.
It was then applied to them.
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The most commonly used conductor in Kabul is copper. Only other guidance is used
Aluminum copper is used for the first time, although it has aluminum
Weakness is much weaker than copper. As a result, BS 7671 states that
Minimum cross section is 16mm2
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. This is the biggest asset of aluminum
Cheaper than copper, it’s lighter and its price is less dependent on fluctuations.
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A number of small cables, called strings, to create a larger cable. Cable made in this
The path is more flexible than a single-size cable and thus easier
Handle Each layer is on the cable in the opposite direction
The previous layer reduces the chance that the strings will be affected by it
From bending forces when installing the cable. ۱ mm
Solid core 1.5mm2
As the core or string is available, the higher sizes are available as the string
Each conductor must be insulated so that it does not separate, it keeps the current in the inside
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Conduct and prevent leakage from the conductor accidentally during it
Lengths of different types of insulators are in use.
Polyvinyl chloride is one of the most commonly used human ingredients today. This is a human being
Thermo plastic that is hard, non-combustible and chemically inactive. Its chairman
The problem is that it softens temperatures above 70 ° C.
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It will not be destroyed
The age and wiring of insulated PVC cables should not be renewed again
The way the wiring was insulated with most older materials. PVC insulated cable
Includes the type of cable described above with a continuous layer or PVC sleeve
Around them. The only limitation on this type of cable is that it should not be used
The ambient temperature is above 70 ° C.
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Existing plastics are available as an alternative to PVC that has the advantage
Able to work at higher temperatures. The most common XLPE is mutual
Polyethylene is one of the other hard-core ethylene-propylene rubber options
The composition, which is determined by HEPR. These materials are typically used only on cable
Which has armored cables over insulators and an outer sheath over armor.
The outer sheath is generally PVC. The subsequent construction is similar to PVC
The armored cable of the wire shown in Figure 2.3 is the only difference between the two
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This insulation is used for cables used at high temperatures. This is for
For example, for immersion heater for final connections, control wiring is used
Heaters of hot air and free air. It can be used safely for the environment
The temperature is up to 85 ° C. Butyl rubber has a higher resistance to natural moisture
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It is completely moisture resistant and suitable for temperatures from -60 ° C to
۱۵۰ ° C, after repeated repetition to boiling water and low pressure steam,
And that’s why it’s used in hospital equipment that needs to be cleaned.
Although it is destroyed by fire, the ash is non-conductive and continues to serve
As insulation if it can be held in place. Hold tape of tape silicon glass,