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How long can the Tesys T remain unpowered and still retain accurate date and time information?

Issue:
How long can the Tesys T remain unpowered and still retain accurate date and time information?

Product Line:
Overload relays and Motor Management Systems

Environment:
Tesys T

Cause:
Product Characteristics


Resolution:
To ensure an accurate record of faults, be sure to maintain the LTM R controller’s internal clock. The

LTM R controller time stamps all faults, using the value stored in the Date And Time Setting parameter.
Internal clock accuracy is +/-1 second per hour. If power is continuously applied for 1 year, the internal
clock accuracy is +/-30 minutes per year.
If power is turned Off for 30 minutes or less, the LTM R controller retains its internal clock settings, with
accuracy of +/- 2 minutes.
If power is turned Off for more than 30 minutes, the LTM R controller resets its internal clock to the time
when power was turned Off.
 
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