Earth testing was conducted on the 125kVA camp DG system using the three probe method as per IS:3043. Earth resistance readings were taken at four locations around the three DG pits, with readings ranging from 36.4 to 63.6 ohms with a voltage of 0.5 to 0.7 volts applied. Two 125kVA DGs from Sudhir Power Ltd were listed with serial numbers.

1. EARTH TESTING OF CAMP DG 125KVA
CONTRACTOR:SAVRONIKSISTEMINDIA PVTLTD. Spike 1
Spike 2
33kV Pole
Methodof testing: (Three Probe Method) asperIS:3043
SpacingB/w Spike:10 Meters
Depthof Spike:0.25Meter
Earth TesterSpecification:Fluke 1621 Earth/Ground Tester(Serial No:S182814118A3)
Reading s at Particular Locations:
S.No Location
Earth Resistance (In
Ohms )
Voltage
Applied
Terrain
1
DG PitNo:1
DG1 SafetyEarthing
36.4 0.5Volt Loose gravel soil
2
DG PitNo:2
DG2 SafetyEarthing
63.6 0.5Volt Loose gravel soil
3
DG PitNo:3
DG1 SystemEarthing
56.1 0.7Volt Loose gravel soil
4
DG PitNo:3
DG2 SystemEarthing
55.0 0.5Volt Loose gravel soil
DG Details
S.No DG Name Make Serial No Specification
1. DG 1 SudhirPowerLtd 84879705 125KVA, 415V
2. DG 2 SudhirPowerLtd 84893859 125KVA, 415V
DG PIT
Reference Earth
E/C1 S/P2 H/C2