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Chapter 4 Wizards Innovation Series Medium Voltage GP Type - G Drives G EH-6385

Line Protection: Overfr equency

These parameters set the level of protection of th e ac line overfrequency protection.
It is highly recommended to use the control default values as calculated in the
previous steps (you can go backward).
• Over freq flt level is the ac line frequency above which the AC line over freq trip
fault occurs.
• Over freq alm level is the ac line frequency above which the AC line freq high
alarm occurs.
• Over freq alm clear is th e ac line frequency below which th e AC line freq high
alarm goes away.
Related functions
• Line Monitor

Line Protection: U nderfrequency

These parameters set the level of protection of the ac line underfrequency protection .
It is highly recommended to use the control default values as calculated in the
previous steps (you can go backward).
• Under freq flt level is the ac line frequency below which the AC line under freq
trip fault occurs.
• Under freq alm level is the ac line frequency below which the AC line freq low
alarm occurs.
• Under freq alarm clr is the ac line frequency above which the AC line freq low
alarm goes away.
Related functions
• Line Monitor

Line Protection: Conclusion

You have completed the Line Protection Setup wizard. The control is now r eady to
run with the new values after the parameter upload.
Pulse Test

Pulse Test: Introductio n

The Pulse Test wizard is a diagnostic tool which allows the user to produce voltage
pulses using the power bridge. Such pulses and the resulting currents which are
induced are useful in performing detailed analysis of the load or power bridge. The
bridge is capable of performing a number of different types of voltage pulses and so
the wizard is more compli cated than might be expected.
In general the Pulse Tes t user specifies the power bridg e devices used to make the
voltage pulses and the duration of the pulses.