For more information about ECP Ground Resistance Surveys, or for information on any of our services, please call our Marketing Department at 713-222-9195 or 1-800-926-9029.

ECP Tech Services Inc., the leading provider of Circuit Breaker Repairs and Vacuum Retrofits; Transformer, OCB and Oil Services; UPS Systems Services; and a wide range of Field Services, can help you maintain safe, effective grounding levels with its economical, periodic Ground Resistance Surveys.

The Problem - Earth electrode requirements or capacities can change from year to year because of:

• Plant or electrical system expansion
• Increased underground installation of nonmetallic pipes and conduit
• Reductions in the water table, resulting in dry earth and high resistance soil
• Temperature and climate variations

Areas of Concern - 

• Actual resistance to earth of non-current carrying parts of electric motors, switchgear, metallic enclosures, etc.
• Continuity of ground leads to a ground grid
• Status of the ground grid
• Impedance of receptacle ground leads to a ground

• Test Receptacles for a maximum of 2-ohm impedance with 60-htz AC
• Test Ground leads for continuity and resistance with 50 amps AC
• Determine the voltage to earth of the entire electrical system, enabling quick isolation of any system fault to ground
• Establish the limits for system to ground or system to frame voltage, ensuring safety of personnel
• Establish a system with minimum transient over voltages
• Check for proper grounding of metallic enclosures or supporting structures of the electrical system
• Check level of protection from lightning strikes and induced lightning voltages
• Obtain soil resistance values throughout the facility, expressed in ohm-centimeters
• Determine spacing, depth of insertion and number of earth electrodes to obtain desirable earth resistance