Why Ground Fault Monitoring Is Essential?
Ground faults occur silently and an create serious risks such as
fire hazards, equipment damage, or unexpected downtime.
In many DC systems, a first fault may remain unnoticed, while subsequent faults
can quickly escalate into critical failures. That is why early detection and alarm generation are essential.
Ground Fault Monitoring ensures that potential
insulation problems are identified before they compromise the entire system,
helping operators act quickly and
maintain operational continuity.
The Alpais Ground Fault Detection Solution
Alpais integrates a ground fault relay and a leakage current sensor for each battery string.
Whenever a ground fault occurs, the relay triggers the Alpais system, and the software instantly notifies the users.
This simple yet effective approach provides timely alerts, supports preventive maintenance, and enhances overall safety —without adding unnecessary complexity.
Alpais Ground Fault Detection Architecture
System Design and Notifications
This application is
designed to detect any ground fault that may occur in the battery pack or battery connection cables for any reason (battery leakage causing chassis contact, connection cables contacting chassis, etc.).
A
leakage current sensor placed on the connection cable between the UPS and the battery pack
measures the leakage current that may occur in the system. The measured value is set to 30 mA on the relay. (Literature indicates that a DC leakage current of 30 mA or more is dangerous for both humans and machinery.)
The
ground fault relay, which receives the measured value, activates when it reaches the specified set value (variances of 1% in mA may occur). After the contact
information is processed in the control module, a "ground fault detected" notification is displayed on the interface, and a
"ground fault detected" email is sent to registered users within the same period.