FAQ

Does the NOLTA-phase sequence control help to avoid damage of engines respectively machines?

Yes. Explanation: The phase sequence control is already activated with contact of the plug with the socket, by which the opportunity is given to correct the rotary field before the engine is switched on with the help of the phase inverter in...more

Is the NOLTA-control-unit usable only for pumps with level control?

No, the NOLTA-control-unit can be used universal.Instead of a float-switch any switch with NC (normal closed)-characteristics could be used.In the case of variations with extra low voltage-surveillance (5V = galvanically disconnected from the ...more

Is the independent monitoring of motor circuit and winding temperature in safety engineering aspects reasonable?

Yes. Explanation: The warming of the winding does not only depend on the current consumption, this could happen for instance in the case of reduced refrigeration (dry run of pumps, etc.).more

Which advantages does the use of the external control switch (float- and temperature monitor contacts in the winding area) with extra low voltage offer?

By the use of extra low voltage the result is a essential lead in case of security, and is therefore recommended by the employees insurance.In the case of damage on the cable to the float-switch no dangerous contact voltage occurs.By the...more

Where is the difference between the electronic NOLTA-themal contact monitor with working current circuit breaker and the conventional version with under-voltage coil?

There is no neutral conductor for the operation with NOLTA-thermal contact monitor necessary.Essentially lower current- and voltage additional charge of the teperature-monitor-contacts in the winding area. more

Where is the difference between thermal and thermal-magnetic protection?

If you have thermal protection the engine is protected ageinst lasting overcurrent in the winding area according to its rated current. If you have thermal-magnetic protection a short-circuit protection according to the rated current of ...more