FUNCTIONAL DESCRIPTION

Frequency Compensation

The frequency compensation characteristic of Figure 1 is

used to improve system load pickup performance by

restraining voltage recovery until frequency has also

started to recover. The regulator is shipped from the

factory set at a 47-Hz corner frequency for 50 Hz systems.

For 60 Hz systems, a 57-Hz corner frequency is achieved

by moving the jumper wire from the 50 and HZ terminals

to the 60 and HZ terminals.

This feature is designed to protect the generator and

regulator by allowing disconnection of the overloaded

part(s) of the system. Should the regulator be allowed to

run in excess of its rated current for any extended period

of time after the protection output closes, failure of the

recommended supply fuse will occur, but regulator

damage may also take place.