Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / er. vasim
Duty Cycle:- It is the classification based on time
duration for which a motor will be loaded
According to IsS 4722, following classes are assigned
S1-Continous
S2-Short time duty
S3- Intermitent periodic duty
S4- Intermitent periodic duty with starting
S5- Intermitent periodic duty with starting and electric
breaking
S6- Continous duty intermitent periodic loading
S7- Continous duty with starting and electric breaking
S8- continous duty with periodic speed change
IP Protection:
It stands for Ingress protection, According to IS 4691 IP
is classified as:
In IP their are two numerals, ie:IP56
1st numeral: protection against ingress of solid particles
or human body parts,etc
2nd numeral: protection against penetration of liquid
for 1st numeral
IP 1: protection against solid of 50 mm dia or more
2: protection agianst solid of 12.5 mm dia or more
3: 2.5 mm dia or more
4: 1-2.5mm dia
5 and 6: protection against dust particle
for 2nd numeral
1: protection against vertical fall of liquid
2:protection against fall of liquid at an angle of 15 degree
3: 60 degree
4: 180 degree (ie: heavy rain fall)
5 and 6:protection provided against liquid jet (very heavy
rush of liquid)
7 & 8:protection provided against total immersion in liquied
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
A jet of fluid strikes a plate What was the force required to counter it?
Define maximum demand?
How to calculate approximate load loss of a distribution transformer by knowing %ge imp of transformer?
What is zero of the system?
State thevenin’s theorem?
what is earth fault relay 64T, why it is used in main Incomer and neutral CT of Transformer.
Why we are going for converter transformers for DC drives application instead of distribution transformer?
I am having a 1500 KVA transformer whose secondary current is 2086A and my connected load is 1000 KVA, I am having 400 KVAR APFCR for PF improvement what ratio of CT should i install in LT EB Bus to get optimum PF improvement?
why booster transformer is used in sumpners test conducted on transformer????
Why it is necessary to isolate fire fighting when you are taking shutdown for lv board.
Can we transmit digital signal to long distance ?
What is the theoretical reason for the size of a zig zag grounding transformer to be 1.732 times less than that of a wye-delta grounding transformer used for the same application?
We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?
How many types of losses occur in a transformer?
does a DG set has low fault level as compared to that of a transformer.If yes then why.
