EFFICIENT ELECTRODE EARTHING
Electrical Earthing
Definition: The process of transferring the immediate
discharge of the electrical energy directly to the earth by the help of the low
resistance wire is known as the electrical earthing. The electrical
earthing is done by connecting the non-current carrying part of the equipment
or neutral of supply system to the ground.
Mostly, the galvanised iron is used for the
earthing. The earthing provides the simple path to the leakage current.
The shortcircuit current of the equipment passes to the earth which has zero
potential. Thus, protects the system and equipment from damage.
Types of Electrical Earthing
The electrical equipment mainly consists of
two non-current carrying parts. These parts are neutral of the system or frame
of the electrical equipment. From the earthing of these two non-current
carrying parts of the electrical system earthing can be classified into two
types.
·
Neutral Earthing
·
Equipment Earthing.
Neutral Earthing
In neutral earthing, the neutral of the system
is directly connected to earth by the help of the GI wire. The neutral earthing
is also called the system earthing. Such type of earthing is mostly provided to
the system which has star winding. For example, the neutral earthing is
provided in the generator, transformer, motor etc.
Equipment Earthing
Such type of earthing is provided to the
electrical equipment. The non-current carrying part of the equipment like their
metallic frame is connected to the earth by the help of the conducting wire. If
any fault occurs in the apparatus, the short-circuit current to pass the earth
by the help of wire. Thus, protect the system from damage.
Importance of Earthing
The earthing is essential because of the
following reasons
·
The earthing protects
the personnel from the short-circuit current.
·
The earthing provides
the easiest path to the flow of short-circuit current even after the failure of
the insulation.
·
The earthing protects
the apparatus and personnel from the high voltage surges and lightning
discharge.
Earthing can be done by electrically
connecting the respective parts in the installation to some system of
electrical conductors or electrodes placed near the soil or below the ground
level. The earthing mat or electrode under the ground level have flat iron riser
through which all the non-current-carrying metallic parts of the equipment are
connected.
When
the fault occurs the fault current from the equipment flows through the
earthing system to the earth and thereby protect the equipment from the fault
current. At the time of the fault, the earth mat conductors rise to the voltage
which is equal to the resistance of the earth mat multiplied by a ground fault.
The
contacting assembly is called earthing. The metallic conductors connecting the
parts of the installation with the earthing are called electrical connection.
The earthing and the earthing connection together called the earthing system.
EFFICIENT ELECTRODE EARTHING
Features
- Corrosion protection by hot dip
galvanization.
- Designed for fast fault current
dissipation.
- Low maintenance and low space
requirement.
- Easy and Fast installation
- Most suitable for electrode condition
with oh value between 5.0 to 8.0
- Moisture booster chemical bag provided
for low earth resistance
- No need to pour water
Benefits
Efficient grounding systems reduces the risk of electric arc and
fire. EFFICIENT Earthing Electrode improves reliability for many application
including-:
- Lightning Protection systems
- Prevention of accidents caused by static
charges and stray current
- Protection of central communication,
electronic and AC power systems.
- Meeting grounding safety requirement for
electrical substation
- For Neutral Earth Systems
Industries
- Petrochemical , CNG, and Nuclear
Facilities.
- Data Centre ,Telecom and Broadcasters.
- Process control and automation.