The Most Common Automatic Transfer Switch Faults and What Causes Them
                     THE MOST COMMON AUTOMATIC 
TRANSFER SWITCH FAULTS AND 
WHAT CAUSES THEM
A correctly functioning automatic transfer switch responds swiftly in case the 
main source of power gets cut off, automatically shifting the electrical load from 
the main to the generator. In case the system functions perfectly, there won’t be 
any problems, but faulty systems mean that everything will fail at the most 
critical times. 
At Blades Power Generation, we often find that many ATS problems come down to 
maintenance, environmental conditions, or incorrect installation rather than the 
switch itself. 
Battery and Starting Issues 
In such instances, the fault may be attributed to the transfer switch, while 
actually it lies with the generator starting system. 
Flat battery, faulty charger, or starter connections could prevent the generator 
from spinning at its rated speed and, hence, the ATS would recognise an unstable 
source and not transfer the load. 
This issue is especially common with older or poorly maintained 
used generators that may spend long periods sitting idle between outages. 
LACK OF ROUTINE TESTING 
Perhaps the biggest problem of all is simply neglect. 
Many systems are installed and forgotten about until a real power cut 
happens. By then, seized mechanisms, weak batteries, or damaged 
components may already be waiting to cause trouble. 
Regular testing helps identify small problems before they turn into complete 
failures. 
At Blades Power Generation, we believe reliable backup power starts with 
proper maintenance, sensible installation, and equipment designed for real 
operating conditions. A well-maintained ATS should provide dependable 
service for many years without unnecessary complexity. 
THANKYOU
[email protected]
Sales: +44 (0)1453 799655 / 821322
Devereaux Crescent ,Ebley, England, GL5 4PX
United Kingdom