ATS and Electrical System Testing

An automatic transfer switch (ATS) is a critical component of an Emergency Power System. It senses the loss of normal utility power, and automatically signals the generator to start and begin generating electricity. Once the backup power is available at the ATS, it checks to ensure that the power quality is within the proper ranges and then transfers the electrical loads to the emergency power supply.

NFPA 110 requires that transfer switches be subjected to a maintenance and testing program that includes an annual major maintenance and three quarterly inspections that includes:

• Checking the connections

• Inspection and testing for overheating or contact corrosion

• Removal of dust and dirt

• Replacement of contacts when required

Thermal imaging, also know as thermographic or infrared testing, is a technique for monitoring the condition of electrical systems, as well as, the mechanical components on a generator set. It can safely and quickly detect loose electrical connections, and other “hot spots” before they fail and cause a fire or equipment damage.

Our trained technicians use an infrared camera to take an image of the infrared heat waves inside your equipment and measure their temperature. This data is then analyzed and the report along with our recommendations for any repairs is provided to you and added to the permanent service file for your equipment.

Equipment failure is almost always preceded with an increase in temperature. Regular surveys of the switchgear and electrical connections can identify sources of heat and resistance and are a great way to discover potential points of failure so that they can be repaired before they cause major equipment damage.