Arcing Damage To Insulation; Water-Soaked Equipment; Spare Parts; Before Re-Energizing The Switchboard - GE ABB ReliaGear SB Installation, Operation And Maintenance Manual

I N S TA L L AT I O N , O P E R AT I O N S A N D M A I N T E N A N C E M A N U A L

Arcing damage to insulation

Some organic insulating materials carbonize when
subjected to the heat of an electrical arc and lose
their insulating properties. Any insulation found
to be carbon-tracked must be replaced before
re-energizing.

Water-soaked equipment

Electrical equipment exposed to water can be
extremely hazardous if reenergized without
performing a proper evaluation and taking
necessary actions. Reductions in the integrity
of electrical equipment due to moisture can affect
the ability of the equipment to perform its
intended function.
Damage to electrical equipment can also result
from flood waters contaminated with chemicals,
sewage, oil, and other debris, which will affect the
integrity and performance of the equipment. Ocean
water and salt spray can be particularly damaging
due to the corrosive and conductive nature of the
saltwater residue.
Do not energize equipment that is exposed to flood
or other contaminated water. Consult ABB Field
Services for guidance.
When equipment has become exposed to non-
contaminated water observe the following points
during maintenance: Completely de-energize the
switchboard. Carefully clean and dry all parts of the
switchboard. When using heaters, make sure the
temperature does not exceed 180° F. Replace all
fuses. Inspect all individual devices for the entrance
of water, dirt, or foreign matter. Replace all sealed
devices and circuit breakers.
Before re-energizing the switchboard, perform
a megohm resistance test, as described in the
Testing and Inspection section on page 23. If
assistance or guidance is required, contact your
local service engineer. Your supplier's service shop
may have facilities for reconditioning equipment
and devices. Water soaked equipment will void the
factory warranty.

Spare parts

Spare-parts stock for the components of the
switchboard, such as bus and insulators, is not
recommended. When components must be
ordered, please refer to the nameplate marking and
shop drawing number and order by description.
Replacement parts and devices, such as circuit
breakers, meters, and switches, will vary due to
the variety of installations.
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