01-06-2012, 10:52 AM
Bharat Coking Coal Limited (BCCL)
[attachment=23787]
ABOUT BCCL
It is a subsidiary of a Coal India Limited which is a Maharatna company.
Bharat Coking Coal Limited (BCCL) is a Public Sector Undertaking engaged in
mining of coal and allied activities.
It occupies an important place in as much as it produces bulk of the coking coal
mined in the country. BCCL meets almost 50% of the total prime coking coal
requirement of the integrated steel sector.
BCCL was incorporated in January, 1972 to operate coking coal mines (214 Nos)
operating in the Jharia & Raniganj Coalfields, taken over by the Govt. of India on
16th Oct,1971 to ensure planned development of the scarce coking coal
resources in the country.
Currently, the Company operates 81 coal mines which include 40 underground,
18 opencast & 23 mixed mines as on 01.04.2010.
The Company also runs 6 coking coal washeries, 2 non-coking coal washeries.
The mines are grouped into 13 areas for administrative convenience.
The total manpower as on 1.4.05 was 92,268 and as on 01.03.2010 is 72,222.
Please purchase PPT to Flash on http://www.verydoc.com to remove this watermark.
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GENERAL DISCUSSION
Substation:- An electrical substation takes
electricity from a very high voltage and lowers
it to the voltage we use in our homes &
businesses.
A substation generally have switching, protection, &
control equipment & one or more transformers.
Types:-
(a) Transmission substation
(b) Distribution substation
Transmission substation connects two or more
transmission lines.
Distribution substation transfers power from
transmission system to the distribution system of
an area.
ISOLATERS
Isolators are designed to open a circuit under
n0 load. Its main purpose is to isolate portion
of circuit from the other & is not intended to
be opened while current is flowing in the line.
There are two types of isolators:-
Ø off load isolators
Ø on load isolators
Please purchase PPT to Flash on http://www.verydoc.com to remove this watermark.
Please purchase
DEFINITION:- A bus bar is a conducting bar
that carries heavy currents to supply several
electric circuits.
When a no. of generators or feeders operating at
the same voltage level to be directly connected
electrically, busbar are used as the common
electrical component. Bus bars are copper rod
or thin walled tubes and operate at constant
voltage.
TYPES OF BUSBARS:-
Ø Main busbar
Ø Auxiliary busbar
One busbar is main busbar & another is spare or
auxilary busbar.
Please purchase PPT to Flash on http://www.verydoc.com to remove this watermark.
Please purchase
CIRCUIT BREAKER & CLASSIFICATIONS
A circuit breaker is a piece of equipment which can:-
Ø break a circuit automatically under fault conditions.
Ø make a circuit either manually or by remote control
under fault conditions.
PRINCIPLE:-
A circuit breaker essentially consists of fixed &
moving contacts, called electrodes under normal
operating conditions, these contacts remain closed &
will not open automatically until & unless the systems
becomes faulty. When a fault occurs on any part of
the system, the trip coils of the breaker get energized
& the moving contacts are pulled apart by some
mechanism. Thus opening the circuit.
[attachment=23787]
ABOUT BCCL
It is a subsidiary of a Coal India Limited which is a Maharatna company.
Bharat Coking Coal Limited (BCCL) is a Public Sector Undertaking engaged in
mining of coal and allied activities.
It occupies an important place in as much as it produces bulk of the coking coal
mined in the country. BCCL meets almost 50% of the total prime coking coal
requirement of the integrated steel sector.
BCCL was incorporated in January, 1972 to operate coking coal mines (214 Nos)
operating in the Jharia & Raniganj Coalfields, taken over by the Govt. of India on
16th Oct,1971 to ensure planned development of the scarce coking coal
resources in the country.
Currently, the Company operates 81 coal mines which include 40 underground,
18 opencast & 23 mixed mines as on 01.04.2010.
The Company also runs 6 coking coal washeries, 2 non-coking coal washeries.
The mines are grouped into 13 areas for administrative convenience.
The total manpower as on 1.4.05 was 92,268 and as on 01.03.2010 is 72,222.
Please purchase PPT to Flash on http://www.verydoc.com to remove this watermark.
Please purchase
GENERAL DISCUSSION
Substation:- An electrical substation takes
electricity from a very high voltage and lowers
it to the voltage we use in our homes &
businesses.
A substation generally have switching, protection, &
control equipment & one or more transformers.
Types:-
(a) Transmission substation
(b) Distribution substation
Transmission substation connects two or more
transmission lines.
Distribution substation transfers power from
transmission system to the distribution system of
an area.
ISOLATERS
Isolators are designed to open a circuit under
n0 load. Its main purpose is to isolate portion
of circuit from the other & is not intended to
be opened while current is flowing in the line.
There are two types of isolators:-
Ø off load isolators
Ø on load isolators
Please purchase PPT to Flash on http://www.verydoc.com to remove this watermark.
Please purchase
DEFINITION:- A bus bar is a conducting bar
that carries heavy currents to supply several
electric circuits.
When a no. of generators or feeders operating at
the same voltage level to be directly connected
electrically, busbar are used as the common
electrical component. Bus bars are copper rod
or thin walled tubes and operate at constant
voltage.
TYPES OF BUSBARS:-
Ø Main busbar
Ø Auxiliary busbar
One busbar is main busbar & another is spare or
auxilary busbar.
Please purchase PPT to Flash on http://www.verydoc.com to remove this watermark.
Please purchase
CIRCUIT BREAKER & CLASSIFICATIONS
A circuit breaker is a piece of equipment which can:-
Ø break a circuit automatically under fault conditions.
Ø make a circuit either manually or by remote control
under fault conditions.
PRINCIPLE:-
A circuit breaker essentially consists of fixed &
moving contacts, called electrodes under normal
operating conditions, these contacts remain closed &
will not open automatically until & unless the systems
becomes faulty. When a fault occurs on any part of
the system, the trip coils of the breaker get energized
& the moving contacts are pulled apart by some
mechanism. Thus opening the circuit.