Our services

Service: dimensioning of earth networks

MALTEP offers ground network sizing calculations. A prerequisite, in particular, for the construction of transformer substations.

General presentation

Objectives and principles

Objectives

The safety of electrical installations and the people working on them depends above all on the proper dissipation of leakage currents at ground level. That's why MALTEP offers you its expertise in defining the best configuration for your grounding electrodes, to guarantee the safety of your infrastructures and the people working on them.

To do this, we'd like to accompany you from the design of the earth network to the delivery of the materials required for its installation.

Essential aspects of ground network compliance

• Soil survey: preliminary analysis required for sizing calculations and ground network design
• Sizing calculation: determines the mesh size, depth, size and quantity required for earth electrodes
• Earth resistance: must be as low as possible so that the current can dissipate easily (generally
• Earthing conductors: suitable for leakage currents and required resistance
• Electrode spacing: must be even to ensure uniform current dissipation

Process

Prerequisites and performance

Information to send us

Necessary before calculating the dimensions of an earth network.

• Soil characteristics
• Fault current injected into phases with phase shift
• Fault duration
• X/R ratio
• System frequency
• Pre-installed conductor data
• Tower grounding resistance
• Earth resistance of terminal substations
• Span length
• Number of wires and their characteristics
• Number of phase wires and their characteristics

MALTEP service

• Data collection
• Data analysis
• Dimensional structure of the earthing system :
• Conductor types
• Dimensions of the grounding network
• Detailed mesh
• Proposed hardware solutions

Ask for your earthing system dimensioning