SAFETY CLEARANCES|BASIC INSULATION LEVEL|Sectional Clearance|EXTRA HIGH VOLTAGE SUBSTATION

Safety clearances in extra high voltage substation are very much important to maintain the basic insulation level of the system. If the system is designed without proper clearances there shall be insulation break down and flash over. A substation or a system faces several over voltage condition, due to lightning, due to switching or fault etc. These over voltages are capable enough to breakdown insulation and cause flash over.
#SafetyClearance, #BasicInsulationLevel, #BIL, #ElectricalTechnologyAndIndustrialPractice
What is safety clearance
sectional clearance
phase clearance
phase to phase clearance
earth clearance
phase to earth clearance
ground clearance
basic insulation level
basic impulse level
lightning impulse voltage
switching impulse voltage
power frequency over voltage
why clearances are required in substation
clearances in substation
what are the clearances to be maintained in extra high voltage substation
bil
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[@christopherbarber5228]

Thanks so much, very good recap.

[@e-powersolution7225]

I think section clearance should measure from the live point to person operating , kindly check once. 5:43

[@narenchauhan3241]

Thank You Sir..

[@travelingwithsun]

Ground clearance is basically the distance between ground level and bottom of any insulator as per IEC 61936.

[@thinkseeeatthroughvickus4555]

Is IEC 61936, will refer to the same clearance chart mentioned in video? ref: 8:55 mins

[@AmanKumar-jp1fd]

Please elaborate about testing of power transformers,,,,

[@SufiShahHamidJalali]

In your video at time 8.32 you have multiple values of lightning impulse withstand peak voltages like 450/550/650 kV for 132 kV system rated volage. Can you say why? Thanks.

[@nitinsharma-rw3zz]

Hi good explanation. Please let me how we select gap in two equipment in same section.like gap between ct and cb

[@electricaltechnologyandind5335]

Specified in cbip manual

[@himanshu2232]

Please make vedio on cb selection for substations.

[@electricaltechnologyandind5335]

Okay i shall try...

[@shivanikoleti9917]

Wt is switching impulse voltage and lighting impulse voltage ...

[@pramodgavit7666]

Please guide for Lt and Ht also

[@electricaltechnologyandind5335]

Ht and lt systems are mainly housed inside a panel. So the assembly could be type tested at lab. Hence there is no recommended clearance. Manufacturer designs as per their standard and make high voltage tests on that. If the system withstands the design is correct. Also these panel bus bars has sleeved insulation.

[@Krishnasaini]

hi, do you work in any safety testing laboratory?

[@thinkseeeatthroughvickus4555]

can you advice where u took that clearance chart from?

[@electricaltechnologyandind5335]

Cbip, indian standard

[@thinkseeeatthroughvickus4555]

@@electricaltechnologyandind5335 will u share it please?

[@enamulhaque630]

Please mention IEC reference no.

[@electricaltechnologyandind5335]

I found those figures in indian standard