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Why ac megger not use in cable meggering?
Because the cable has capacitance, and an AC source would not be able to distinguish between capacitance and leakage.
What is allowable resistance of the cable in mergers test?
A good number on a megger test should be around 2 megohms.
What tool is used to conduct insulation test of electric cable?
Strictly-speaking, this instrument is called a 'megohm meter', but is widely-known as a 'megger' which is the trade name of the company that manufactures the instrument.
What is LV cable insulation resistance acceptance value?
The minimum acceptable insulation resistance value is calculated using the following formula: Rinsulation= (Vrated + 1 ) x (304.8 / L ) Where: Rinsulation is the minimum acceptable insulation resistance value, in mega-ohms; Vrated is the rated voltage of the cable (typically printed on the cable), in kilovolts; and L is the length of the cable, in meters (if the cable length is in feet, replace the number 304.8 with 1000).
What is cable size for 48V DC 30 A?
The correct size of cable depends on the length of the cable run, as well as the voltage and current. Another consideration is what voltage loss is acceptable ? Safest answer would be to use a cable sizing table or online tool: http://www.solar-wind.co.uk/cable-sizing-DC-cables.html Hope that helps. G.
What is the g in a megger test?
It is the terminal on the megger that the ground cable connect to when testing a device to ground.
Why ac megger not use in cable meggering?
Because the cable has capacitance, and an AC source would not be able to distinguish between capacitance and leakage.
What is allowable resistance of the cable in mergers test?
A good number on a megger test should be around 2 megohms.
What is the acceptable insulation resistance megger reading of 160 linear feet of 350 MCM copper underground cable phase to phase phase to neutral and phase to ground?
Engineers that I have worked with state in their specifications that all meggered wires must have a reading of 5 Meg ohms or higher. If the reading is lower that this benchmark start checking splices especially if it is an underground installation. Water usually accumulates in underground conduit systems and when the wires are pulled in there is a certain amount of conductor scraping. This starts the downward spiral from infinity. Check termination points close to the exit point of the conduit. A certain amount of evaporation from the conduit condensates on the terminal points.
Why do a megger test?
A megger test is done to check the insulation factor of wires or devices. This is to make sure that when the working voltage is applied, a short circuit to ground will not occur due to a problem with the insulation of the device or wire.
How can you find out if your electric cable damaged in a house?
A skilled repair man can use a tool called an Megger(mega-ohm meter) to check the condition of the insulation.
What is the minimum acceptable value of insulation resistance of instrument cable?
more than 1 G ohms is acceptable. cheers
Can insulation resistance of cable be checked with a volt meter?
No. A volt-ohmmeter will not check insulation. To check cable insulation you need a special device (called a megger) made for the purpose that imposes a high voltage and measures current leaks.
What tool is used to conduct insulation test of electric cable?
Strictly-speaking, this instrument is called a 'megohm meter', but is widely-known as a 'megger' which is the trade name of the company that manufactures the instrument.
Could a Nintendo ds usb cable download things your ps3?
You can use any working cable to download acceptable "information" with your USB port on the PS3
What is LV cable insulation resistance acceptance value?
The minimum acceptable insulation resistance value is calculated using the following formula: Rinsulation= (Vrated + 1 ) x (304.8 / L ) Where: Rinsulation is the minimum acceptable insulation resistance value, in mega-ohms; Vrated is the rated voltage of the cable (typically printed on the cable), in kilovolts; and L is the length of the cable, in meters (if the cable length is in feet, replace the number 304.8 with 1000).
What is cl rating?
A CL rated cable is constructed to comply with the US Electrical Standard Code. It is a common cable used in installations. CM and CATV are also acceptable ratings.
