GE Industrial Solutions Entellisys Installation - Manual (Page 27)

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Entellisys Low Voltage Switchgear
Chapter 3. Description
A vertical barrier (2), Fig. 3-17, between the transition
section (1) and the first breaker section is always
furnished.
The buswork in the device/auxiliary/transition sections is
not insulated at the termination points to the other
connected equipments such as transformers, busway, or
existing equipments.
1. Transition compartment
2. Barrier
3. Main incoming bus
4. Neutral bus
5. Ground bus
Fig. 3-17. Transition section
Insulation and isolation of the vertical riser bus bars (2),
Fig. 3-18, is provided by installing phase isolation barriers
(3) between the bus bars and by mounting covers (4) over
the bus bars. (The top portion of the vertical bus is shown
with the cover removed.)
The phase isolation barriers and riser bus covers are
constructed from insulating material. Insulation of the
horizontal main bus bars (5) is achieved by an oven cured
coating of epoxy.
1. Molded base
2. Vertical riser buses (cover removed to show bus
location)
3. Phase isolation barriers
4. Covers over riser bus
5. Insulated horizontal main buses
6. Covers for vertical/horizontal bus joints
7. Insulated run backs
Fig. 3-18. Bus insulation system