GE IS200ESELH1A Exciter Selector Board

GE IS200ESELH1A Exciter Selector Board

Functional Description

The IS200ESEL Exciter Selector Board (ESEL) mounts in the control rack and receives six logic level gate pulse

signals from its corresponding master I/O (EMIO) board. It then uses the pulse signals to drive six sets of

cables which are distributed to the exciter gate pulse amplifier (EGPA) boards. The EGPA boards are mounted

in the Power Conversion Cabinet.

For simplex systems, only one ESEL is necessary, but if redundancy control or online repair is required, then

two ESELs are supplied. Either ESEL 1 or ESEL 2 can be active depending on which controller, M1 or M2, is

active as determined by controller C. Refer to the figure below. ESEL 1 is always driven by M1, and ESEL 2

by M2. Controller M1 is the default.

Technical Specifications