1- Earth Resistance Test :
Earth resistance test should be carried out in timely as quarterly basis because with time the lack of
moisture the soil resistivity can be increase as above 2 ohm. High resistance is the cause of interruption of
current flow in quickly so resistance value should be less then 2 ohm. So in tis way the earth resistance test
is required in timely.
Earth Resistance Test
2-Single Phase Motor Test:
Single phase motor is used widely in domestic, residential, societies , industries and commercial. We utilize
to the
motor as different types but sometimes motor does not work then we think what happened.
If the motor is
malfunctioning
then the motor will have to test. After testing we can know about actual situation of motor health. Here we
are going to
discuss about single phase motor testing.
Single-Phase Motor Testing
3-Single Phase Motor Test with Megger:
Single phase motor is checked when it is faulty or after rewinding. Many methods are available for testing or
check
single phase motor. Single phase motor has two windings, one is running winding second is starting winding.
Firstly, power connection is
disconnected from connection plate then motor can be tested below mentioned procedures.
Megger is a test instruments which is used in commonly for winding coil insulation test, open circuit test,
short
circuit test.
Single-Phase Motor Testing
4-Single Phase Motor Test with Multimeter:
Single phase motor is checked when it is faulty or after rewinding. Many methods are available for testing or
check
single phase motor. Multimeter test methods are given below mentioned.
Multimeter is a test instruments
which is used in commonly for winding coil insulation test, open circuit test, short
circuit test.
Single-Phase Motor Multimeter Tests
5-Single Phase Motor Test with Testing lamp:
Single phase motor is checked when it is faulty or after rewinding. Many methods are available for testing or
check
single phase motor. Testing lamp methods are given below mentioned.
Testing lamp is a test methods which
is used in commonly for winding coil insulation test, open circuit test, short
circuit test. A test lamp is connected with testing coil in series.
Single-Phase Motor Testing Lamp Tests
6-Three Phase Motor Testing Methods:
Three phase motor is used widely in domestic, residential, societies , industries and commercial. We utilize
to the
motor as different types but sometimes motor does not work then we think what happened.
If the motor is
malfunctioning
then the motor will have to test. After testing we can know about actual situation of motor health. Here we
are going to
discuss about three phase motor test methods.
Three-Phase Motor Test Methods
7-Three Phase Motor Test:
Three phase motor is used widely in domestic, residential, societies , industries and commercial. We utilize
to the
motor as different types but sometimes motor does not work then we think what happened.
If the motor is
malfunctioning
then the motor will have to test. After testing we can know about actual situation of motor health. Here we
are going to
discuss about single phase motor testing.
Three-Phase Motor Testing
8-Three Phase Motor Test with Megger:
Three phase motor is checked when it is faulty or after rewinding. Many methods are available for testing or
check three
phase motor. Megger test method is given below mentioned.
Three phase motor has three windings, one is R phase, second is Y phase and third is B phase. Firstly, power
connection
is disconnected from connection plate then motor can be tested below mentioned procedures.
Three-Phase Motor Megger Test
9-Three Phase Motor Test with Multimeter:
Three phase motor is checked when it is faulty or after rewinding. Many methods are available for testing or
check three
phase motor. Multimeter test method is given below mentioned.
Multimeter is a test instruments which is
used in commonly for winding coil insulation test, open circuit test, short
circuit test.
Three-Phase Motor Multimeter Tests
10-Three Phase Motor Test with Testing lamp:
Three phase motor is checked when it is faulty or after rewinding. Many methods are available for testing or
check three
phase motor. Testing lamp methods are given below mentioned.
Testing lamp is a test methods which is used
in commonly for winding coil insulation test, open circuit test, short
circuit test. A test lamp is connected with testing coil in series.
Three-Phase Motor Testing Lamp Tests
11-Cable Test with Multimeter:
Cable is a group of insulated conductor. Different types cable are used for current carrying in electricity
system like
as HT cable for HT system, LT cable for LT system and other general utilization cable. Low volt or small cable
can be
tested with multimeter.
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12-Cable Test with Megger:
Cable is a group of insulated conductor. Different types cable are used for current carrying in electricity
system like
as HT cable for HT system, LT cable for LT system and other general utilization cable. Low volt or small cable
can be
tested multimeter but power cable or high voltage cable will be tested through Megger which is available in
500V DC, 1KV
DC, 2KV DC, 5KV DC.
Cable Insulation Resistance Test
13 - HT Protection Relay Testing::
Now a days the digital protection relay mostly are using. If we want to check health performance then we will
have to
test of relay. First relay performance test is carried out after commissioning after that relay testing is
carried out
as base of annually time schedule.
Pre set value or protection relays are verified or tested through test equipment. a all protection relays are
also
carried out maintenance activity. All connections are checked and clean properly.
HT Protection Relay Testing
14 - LT Protection Relay Testing:
Now a days the digital protection relay mostly are using. If we want to check health performance then we will
have to
test of relay. First relay performance test is carried out after commissioning after that relay testing is
carried out
as base of annually time schedule.
Pre set value or protection relays are verified or tested through test equipment. a all protection relays are
also
carried out maintenance activity. All connections are checked and clean properly.
LT Protection Relay Testing
15 - Transformer oil breakdown test:
Transformer BD test is carried out to the transformer oil which is used for moisture or dielectric strength
checking in
transformer oil. Due to moisture,losses of transformer is increased as per permissible limit. For better
transformer
operation, oil insulation capacity should be good. The moisture is very harmful for transformer oil die
electric
strength.
Transformer Oil BDV Test
16 - Load Balancing test:
Load balancing is the important factor in electrical system. It means all three phases should be loaded as
equal.
Maximum unbalance load should not be more than 30% which can be tolerated by system. If the unbalance load is
more than
30% then the system may be failure.
So for better health of equipment, the unbalance load is tested. It is tested through clamp meter or amp
meter.
Three-Phase Load Balance Test
