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How do you test the 11KV HT cables?
The test equipment used to test high voltage cables is a hi-pot test where a high DC voltage is a applied to the cable. This voltage can be from 150% to 200% of the working voltage of the cable.See related links below.
How do you check HT cables for cracks?
1 look at them in the dark when power is running through them if you see a blue or orange arch your cable is faulty or use a mega ohm meter wrap the outer cable in foil ground it then mega it
What is difference between the HT panel and LT panel?
An LT panel is a device that receives power and distributes it to other devices and boards. An HT panel is the same thing except it is used for high tension cables.
What is the bending radius of HT cable?
15 D
Why using semiconductor protection for HT cable?
In a HT cable there are 2 layers of semiconductor one on the conductor and second on the XLPE insulation. As we know semiconductor behaves as conductor when temperature rises. So when the HT cable is on load its conductor temperature rises due to this the semicon layer which is on conductor behaves like conductor and as a result overall cross section area is increased. now the second semicon layer which is over XLPE on temp rise behaves as conductor and used for dessipating heat out of conductor as the cable heat due to load.
What precautions to be taken when working with Transformer?
Frist putt of the main incomer HT side then Rack out the breaker and put the LOTO after that Discharge the cable Both side (HT/LT).
Why armour HT XLPE power cable required to Earth?
because when ever fault current occurs then the cable wont get damaged due to cable armored earthing to the gland for fault current to pass through groung
What should be minimum insulation resistance value for 11 kV HT cable?
65 meg ohm if it is 11 kv
Can you use HT cable in place of Lt cable?
For LT cable 1. Use : Up to 690V 2. Insulation : PVC 3. Core(Neutral) : Yes 4. Insulation Grading : 1100 V For HT cable 1. Use : Above 690 2. Insulation : XLPE 3. Core(Neutral) : No 4. Insulation Grading : Above 3.3kV, 11KV..etc ( Please note that now 690 V using in VFD application with LV cable and 440 V for DOT motor starter) from Kunal Singh Dabi the_dabi@rediffmaill.com
What is the bending radius of a cable?
Typically, wires have a bend radius of 10 times the diameter of the wire. Measuring the inside. This is basically to prevent injury or changes in impedance at the bend. Also note that the tighter the bend can damage the insulation in coaxial or triaxial cables and cause lower dielectric strength between layers. Best to install cables where ripples don't form on the surface and moderate force is recommended. MIL-W-5088 has more information.
What is HT switchgear?
what HT Swichgear
What is the diameter of the water pipes used on whirlpool baths?
ht of bathroom faucet
