Frequently Asked Questions
No. You cannot remotely reset LR9D electronic overloads.
There is no provision or attachment to wire external reset button to overload.
LT47 is not an overload relay but an overcurrent relay, working on a definite time characteristic : current threshold and time based function.
We do not have Coordination type 2 tables for LT47.
However, LT47 is an overcurrent relay. It performs a motor current measurement through its internal CT. So, LT47 doesn't add impedance to the motor control circuit and the coordination only results from the characteristics of the short circuit protection (fuses or circuit-breaker) and of the contactor. So the coordination tables we publish for LTMR can be used when LT47 is used.
Tesys D line Overload Relays
The normally closed overload contact are terminals 95 & 96; and the normally open overload contact are terminals 97 & 98.
T1 T2 and T3 are the load terminals.
The normally closed control circuit contact will open when there is a fault, this contact is typically used in series with the control circuit.
The normally open trip signal contact closes when a fault occurs which is typically used to control a pilot light, or alarm.