Grounding 4,15 or 34.5 kV metal clad switchgear for field maintenance

[psycholuck]

I am working on specifying 34.5 kV indoor metal clad switchgear. I was wondering if any one knows before field personal work on the breaker what is grounded. I know that some metal clad switchgear have grounded metal shutters that seperate the stabs of the circuit breaker from the bus and feeder duct. But what other grounding is done.

 

[jbartos]

Suggestion:
1. Reference is IEEE Std 1246-2002 Guide for Temporary Protective Grounding Systems Used in Substations

 

[psycholuck]

Does this Standard refer to indoor metal clad switchgear.

 

[busbar]

Online desciption of IEEE 1246-1997 at:

http://standards.ieee.org/reading/ieee/std_public/description/subst/1246-1997_desc.html