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18 Operating Procedures
PowlVac 38™ CDS Electrically Operated
Ground & Test Device per ConEd Specification EO-2022-15
01.4IB.65090A
Ch 5 Operating Procedures
The PowlVac 38™ CDS Electrically Operated Ground
and Test Device is designed to provide access to
the stationary primary disconnecting devices of
metal-clad switchgear compartments to ground
those terminals or to perform tests on either
energized or deenergized circuits. Because this
device gives access to switchgear components that
are normally energized with dangerous voltages,
great care must be exercised when using this
device. All primary circuits should be considered
to be energized until proven otherwise.
The operational instructions given in this
instruction bulletin cover the basic operations
required to use the ground and test device. In
addition, many users will have operational and
interlocking procedures of their own that must be
followed. The operator must be knowledgeable
of any procedures required by the user of
the equipment and should also examine the
drawings furnished with the particular switchgear
equipment being grounded or tested, as these
drawings may include additional information or
instructions.
A. A
pplyInG
G
round
The CON ED and CUSTOMER ground and test
devices are supplied with similar interlock
functions. However, the CON ED device uses
Key KU for Key Lock K1 and the CUSTOMER
device uses Key KCF for Key Lock K1. Key KU
and Key KCF are NOT INTERCHANGEABLE.
Although these operating procedures contain
illustrations of the CUSTOMER device, these
procedures also apply to the CON ED device.
For procedures that refer to Key KCF for the
CUSTOMER device, the same procedures apply
to Key KU for the CON ED device.
NOTICE
Although the PowlVac 38
™
CDS Electrically
Operated Ground & Test Device is designed
and rated to close against a short circuit
current within its rating, it should not be used
to deliberately apply a ground to an energized
line or bus. The operator should ensure that
the circuit to be grounded is deenergized
before closing the grounding switch.
!
CAUTION
Determine the circuit to be grounded and
carefully examine the drawings provided with
the switchgear equipment to determine in
which compartment this circuit is located and
whether it is connected to the upper or lower
disconnect stabs. Once this is known, perform
the following:
1. With the ground and test device out of
the breaker compartment, verify the
correct compartment compatibility of the
ground and test device. The ground and
test devices supplied per installation are
prominently marked “CUSTOMER” across
the front for ease of identification.
2. Obtain the KCF key through proper control
procedures.
3. Insert the KCF key into key lock K1
(Figure 3, q) and rotate the key. The switch
associated with K1 opens. The “Close”
control circuit of the ground and test device
is now electrically disabled. The KCF key
is now captive and has electrically locked
the ground and test device in the “Open”
position. The KB key is now removable
(Figure 3, r) .
4. Transfer key KB to key lock K2
(Figure 3, i) . The ground and test device
is now mechanically locked in the “Open”
position. The KB key is now captive and the
KC key is removable (Figure 3, k) .