Interested to Buy Any Domain ? << Click Here >> for more details...
What is the Different between CT Class-0.2 & Class-0.2s ?
- 3 Answers
- 39335 Views
- I also Faced
- E-Mail Answers
Answer Posted / sam
Accuracy class of 0.2 means +/- 0.2 % error. But, the
declared accuracy is guaranteed only between 100% & 120%
rating. And, with some increased error, the CT performance
can be guaranteed from 5% loading. Below this load, the
error is not guaranteed. It can be anything.
Normally these classes of accuracy are used for Tariff
Metering by the Utility Company.
In large industrial projects, the project would be
commissioned in steps only. In such a case, initially the
loading will be very low. If the tariff metering CT errors
are haphazard, it may not be acceptable either to the
supplier (in case of negative error) or to the consumer (in
the case of positive error). And the magnitude can be quite
large, say, with a sanctioned demand of 10MVA, even 1%
error means 100kVA.
To cater to such situations, Standards have introduced two
new accuracy classes, 0.2S & 0.5S for tariff metering
purposes. These special CTs guarantee the declared
accuracy, even with 20% loading. And some definite error
can be defined even with a load as low as 1%. Thus they are
suitable for industries where loads are commissioned in
steps or stages.
| Is This Answer Correct ? | 44 Yes | 5 No |
Post New Answer View All Answers
WHAT IS THE FORMULA FOR CALCULATING CURRENT RATING(DIRECT IN GROUND OR AIR) OF ARMOURED(XLPE) CABLE OF 4C,16Sqmm?
we use 400/5A ct and 35/roor3KV,/0.1/root3KV,0.1/root3KV pt ratio. What is the multiple factor of this meter.
why the voltage and current in a long transmission line are called travelling wave?
can we start slipring motor on star delta like we start induction motor ? if yes where will we connect ?
1. If 8.35%Z means the percentage impedance of 132kV-line from power company, we will like to confirm its base capacity?
why 1.7Uo for HV cable Hi pot test?IE standard why?
how did i get the competency certificate as electricle supervisor. iam completed my b.tech.but i dnt have any experince, this certificate is required for applyng ongc mangement trainees. what should i do sir please suggested me
How to check the cable fault / hv test of transformer cable.
which capacity of RCCB used for five thousand watt electricity load?
what is the operating time for LBB and how does the LBB relay realise whether cb is opened or not?
what are all the components required to assemble solar panel other than pv cell?
why HT armoured cable does not glanding
which is chemical used as in ro water what is difference betweeen multi grade filter&dual media filter
if i get a drop in my 1st year and the i clear my 2nd year and 3rd year all clear and i dont have any back logs so can i be able to sit in campus selection??
Pls explan the OLR setting in VCB at HT yard
