what is the difference between thermal magnetic release and
microprocessor based release breakers. what are the advantages
of latter over the first one...
Answers were Sorted based on User's Feedback
Answer / v.govindarajulu
In Thermal Magnetic Release shortly known as TMD release
gives two types of Protection which are overload and short
circuit Protection, In termal Property ( ie metal gets
elongated when heating) is used to sense the overload (
over curent causes high heat in bimettalic strip). and
Magnetic Property (ie Magnectic Flux / induction) is used
to sense the short circuit.
note: short circuit protection needs quick trip than
overload trip thats why thermal trip is used for Overload
Protection And Magnetic Property is used for shortcircuit
Protection.
In Microprocessor release, sensing and triping executed by
Micrprocessor in gives the very faster response than TMD
Release. Normally Microprocessor based release gives LSI
Protection. ( G is Optional)
Is This Answer Correct ? | 88 Yes | 4 No |
Answer / manojkrishnan
The thermal-magnetic release tripping circuit works with the
advantage of bimetallic strip, on which a heating element is
wound and so it needs particular time to trip ( heat up the
metallic strip > open circuit the holding coil > opens the
contacts ) .But the microprocessor based CB trips more
rapidly as we can set the tripping current,sensitivity and
tripping time more accurately with the help of a CT or a
current sensing resistor (in DC ).
Is This Answer Correct ? | 43 Yes | 3 No |
fault sensing time is less in microprocessor release
Is This Answer Correct ? | 21 Yes | 6 No |
Answer / mustafa
Thermal magnetic uses bimetallic strips- manual reset
Is This Answer Correct ? | 15 Yes | 6 No |
Answer / naveen
in thermal magnetic release movement of the parts involved
where as in microprocessor based release is static device
no wear and tear
Is This Answer Correct ? | 5 Yes | 7 No |
On a 10 KVA UPS we have to provide a DC MCB for Battery bank of 16 nos (12 V 65 AH). What Shall be the current rating of DC MCB ?
6 Answers RR, TNEB Tamil Nadu Electricity Board,
What is meant by RCCB
what is high voltage in india?
How much ph is maintained of water resistance starter for slipring induction motor ?
what is split phase ac system?
WHY THE TRANSFORMER VALUE MEASURES IN KVA INSTEAD OF KW.
what are FM 200 systems? why it is useful for electrical systems ?
What is lifting power for 1 wb/m2 and 1 A magnet?
Why electric sock occur to human or any lives ?
How to calcualte 1unit of current consumption?
3 Answers Bhushan Power Steel, ITC Infotech,
neutral earth resistance testing is it possible for transformer while in load condition
why the efficiency of generator is more than the motor in case of swinburne's test????