JOHNSON CONTROLS
29
Section 3 - Installation
Form 160.00-N6
Issue date: 08/27/2021
3
Only qualied personnel must energize
this equipment. Correct arc-ash pro-
tective clothing and equipment must be
worn when energizing medium voltage
switchgear, including the isolation switch
on the front of the MVVSD.
The equipment must be energized in sequence by start-
ing at the source end of the system and working to-
wards the main devices. First the main devices, then
the feeder devices and then the branch circuit devices
must be closed.
With all removable barriers in place and all doors closed
and latched, the devices must be turned on with a firm,
positive motion. Protective devices and switches that
are not quick-acting must not be teased into the closed
or open positions. The isolation switch handle must be
moved between the OFF and ON positions in a single
continuous smooth movement.
Start-up and test
Before releasing the drive system for regular opera-
tion after installation, the system must be adjusted and
tested by qualified YORK/Johnson Controls person-
nel. This start-up labor is included in the sale of each
MVVSD, to ensure reliable and safe performance. It is
important to make arrangements for such a check and
that time is allowed for it.
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