My employer will be constructing two 7FA simple cycle units where im responsible to ensure the proper installation and commissioning of the LCI static starting system. Can someone explain how this control system works? any things to watch out for during the installation and testing?
Thanks for your help in advance.

Dunno if this will help:

http://www.control.com/thread/1026241251

Read GEs GEH instructions for the LCI in addition to how the excitation system and turbine controller interfaces with the static start control. Ensure cables are not shielded since the AC voltage can cause induced and circulating currents which ive heard of in the past burn the insulation. Verify all disconnect switch operation, ensure offline checks are working, ring out all feedback, controls, etc. before first crank. Ive seen the start up engineer put the exciter in sumilation mode and give the LCI a actual start. This would verify that all disconnect sequencing is correct in addition to the excitation system reference but not roll the unit. let me know if you need more specifics to help with your startup.

I have read the discussion about the lci but I am a new engineer , could any one pleas help me and tell me what lci ? and give me more details about that system ? thank you

Hello,
LCI stands for Load Commutated Inverter. In a nutshell, it drives the generator as a motor used for starting the turbine and helping it get to rated speed.
the LCi is powered by 4160 (2080 wye and 2080 delta) it is then rectified to DC power to eliminate harmonics and inverted back to linear 4160 AC to the generator stator. The LCI AC feeds into the stator and the exciter produces a magnetizing flux to the field in order to motor the system. The generator's neutral must be lifted at this time. The LCI then breaks the unit from turning gear speed and at about 50% speed the turbine breaks away and takes over the unit to 3600rpms'. During the break away period, the LCI's voltgae and field current decreses since the turbine is taking over. at about 95% speed the LCI totally drops out.
refer to the GEK for more info. This LCI is like a huge VFD in my mind, driving the synchonous motor (generator/turbine coupled).
hope this sparks your interest!