Earth Grid Testing
The overall integrity of your protection system is built on the foundation and expectation that your earth grid is functional, intact and adequate for your system. Without this, your protection systems may not protect you or function as expected. Earth grid testing can assist in determining whether or not this is the case and should be carried out prior to a large expansion of the site or premises or if you are considering installing new equipment onsite.
Benefits Of Service
- 1 Limits voltage to which the system-to-earth insulation is subjected, thereby more definitely fixing the insulation rating.
- 2 Limits the system-to-ground or system-to-frame voltage to values safe for personnel.
- 3 Provides a relatively stable system with a minimum of transient over-voltages.
- 4 Permits any system fault to ground to be quickly isolated.
For these reasons all electrical installations require an effective earthing system. A proper earthing system benefits both people and their facilities. It lessens the chance of injury and reduces the likelihood of damage from lightning strikes and induced voltages. Lightning Strikes and large fault currents can cause degradation while changing environmental influences can cause the soil resistivity to change over time.
It is for these reasons that testing and checking of the earthing systems, particularly where there is an installation over 1000V is important.
Why Choose This Service
It is recommended that earth resistivity testing be carried out every three years and Voltage checks be carried out more regularly.