A software to view directly coordination between devices:

A software to view directly coordination between devices

Curve direct is a software intended for all people seeking to view the behavior of automatic breaking devices placed in cascade in a LV electrical network.
Curve direct is used to view coordination between devices. This tool therefore enhances the level of continuity of service of an installation.

• Choice of one or more products in a protection device database
• Viewing of non-tripping and tripping curves t=fct (I in A)
• If necessary, settings of the trip unit real time refreshed
• Zoom and Print

It is a software displaying the tripping curves t = fct (I in A) of an automatic breaking device. These curves are used to determine the tripping time of a protection device according to the current to which it is subjected.
For a given device, two curves are represented:
• the " non operation " curve, for a given current, this is the maximum time during which it is guaranteed that the protection device will not operate.
• the " operation " curve, for a given current, this is the maximum operation time of the protection device.

• Discrimination: This is coordination of an automatic breaking device so that a fault, occuring at one point of the installation, will be eliminated by the circuit-breaker immediately upstream of the fault and only by this circuit-breaker. Discrimination is total when, for all presumed fault values, from overload through to full short-circuit, the breaking device immediately upstream of the fault opens before the breaking device. Discrimination is partial if the above condition is not complied with up to the full current value (largest value), but only up to a lower value.
• Procedure: The user chooses in a database the breaking devices whose curves he would like to view. This database contains all the circuit-breakers in Schneider Electric's range, even those that are no longer commercialized. Once the tripping curves have been viewed, the user can adjust the setting bands to immediately adjust plotting. You can display as many curves as you wish. However, for legibility reasons, we recommend that you use no more than 4 automatic breaking devices for study purposes.

• Hardware configuration :
• Minimum requirements: Pentium 2, 350 Mhz, 64Mb RAM
• Windows 98 second edition, Windows 2000, Windows NT4 SP5