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12.3 Relay outputs
The standard functionality of MainsPro G99TT corresponds with the standard of protective relays and offers
an option to set the logic of the relay outputs. For safety reasons, all outputs are available in an Normally
Closed (NC) version. Those are indicated by an exclamation mark (!) and remain energized in a fault-free
state and in case of power supply failure the output relay deactivates. MainsPro G99TT also allows setting the
output relays to Normally Open (NO), so the outputs maintain de-energized in fault-free state and in case of a
trip, the relays energize.
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