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What is the permissible temperature rise in Class F Insulation?
Wiki User
∙ 14y ago
The maximum temperature in Class F insulation is 150* C.
Wiki User
∙ 14y ago
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What temperature would an hv transformer reach?
They're usually spec'd for 55 or 65 degrees C average temperature rise (so 55 or 65 C above ambient temp), but the hot spot can get significantly hotter, and is limited by the insulation class of the transformer. Class B is 130C, class S is 240C, so there's a big difference between insulation. Temperature is dependent upon loading of the transformer, and what cooling systems are engaged.
What is the length of time that a motor can safely run on starting and full load current?
It depends on the insulation provided in winding, motor can safely run on full load current. and over that it may burn but depends on cooling system of the motor. Motor can burn if insulation fails, failure of insulation depends on only the temperature rise.
What does temperature rise mean in hvac?
themperature of out door air plus temperature of return air [furanace]
What is the theory of converting electrical energy into heat energy?
Electricity does work (W =I2Rt) ) on a conductor, causing its internal energy (U) to rise. This rise in internal energy is accompanied by a rise in temperature, resulting in heat transfer (Q) from the conductor to the surroundings. It should be pointed out that the term 'heat energy' is no longer used -heat is simply energy transfer caused by a difference in temperature.
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 is IEC equivalent to UL 943?
Guide for the Specification of Permissible Temperature & Temperature Rise for
What temperature would an hv transformer reach?
They're usually spec'd for 55 or 65 degrees C average temperature rise (so 55 or 65 C above ambient temp), but the hot spot can get significantly hotter, and is limited by the insulation class of the transformer. Class B is 130C, class S is 240C, so there's a big difference between insulation. Temperature is dependent upon loading of the transformer, and what cooling systems are engaged.
How will insulation resistance change with rise in temperature?
Insulation resistance is temperature-sensitive. When temperature increases, insulation resistance decreases, and vice versa. A common rule of thumb is insulation resistance changes by a factor of two for each 10 DegrC change. So, to compare new readings with previous ones, you'll have to correct your readings to some base temperature. For example, suppose you measured 100 megohms with an insulation temperature of 30 DegrC. A corrected measurement at 20 DegrC would be 200 megohms (100 megohms times two).
What is the length of time that a motor can safely run on starting and full load current?
It depends on the insulation provided in winding, motor can safely run on full load current. and over that it may burn but depends on cooling system of the motor. Motor can burn if insulation fails, failure of insulation depends on only the temperature rise.
How to overcome Condensation during hot steam mixing with cool air?
rise temperature, increase the insulation. Also, air does not own much mass. It will not condense the steam faster and much.
When was The Rise of the Creative Class created?
The Rise of the Creative Class was created in 2002.
Does the temperature rise or drop in the exosphere?
rise
How would you explain the temperature rise in the water?
The temperature rise because of the gangnam dance
How does the solubility of a substance change with a rise in temperature?
With a rise of temperature, the solubility increases
Will ice rise in temperature straight away when heated?
No, ice will not rise in temperature right away
When you shiver does your body temperature rise or fall?
rise
How much did the temperature rise if it was -6 and At midday the temperature is 9 and degC. By how much did the temperature rise?
40
