9
Instruction Book
IB182217EN October 2018 www.eaton.com
50 / 75 / 150 DHP [Cable or Hard Bus Application]
Ground and Test Device
SECTION 3: RECEIVING, HANDLING, AND
STORAGE
Ground and test (G&T) devices are subjected to complete factory
production tests and inspection before being packed. They are
shipped in packages designed to provide maximum protection to
the equipment during shipment and storage and at the same time
to provide convenient handling. Accessories such as the grounding
cables are shipped with the ground and test device.
3.1 RECEIVING
Until the ground and test device is ready to be delivered to the
switchgear site for installation, DO NOT remove it from the shipping
crate. If the ground and test device is to be placed in storage,
maximum protection can be obtained by keeping it in its crate.
Upon receipt of the equipment, inspect the crates for any signs of
damage or rough handling. Open the crates carefully to avoid any
damage to the contents. Use a nail puller rather than a crow bar
when required.
When opening the crates, be careful that any loose items or
hardware are not discarded with the packing material. Check the
contents of each package against the packing list. Examine the
ground and test device for any signs of shipping damage such as
broken, missing or loose hardware, damaged or deformed insulation
and other components. File claims immediately with the carrier if
damage or loss is detected and notify the nearest Eaton office.
Tools and Accessories
Racking Handlee:
A racking handle is not provided for all 50 and 150
DHP G&T types because it is identical in form, fit, and function to
the racking handle provided with the original DHP air circuit breakers.
Use the racking handle originally provided to engage the racking
shaft of the G&T racking mechanism to move the device into and
out of the circuit breaker compartment.
Grounding Cablese:
Grounding cables are provided only on the
cable-type G&T devices. The appropriate size and number of cables
are furnished to match the rated short time and momentary ratings.
The terminated cables may be bolted to the appropriate terminals
and to the ground connections provided on the G&T device.
Grounding Shorting Barse:
Three grounding shorting bars are
furnished only on hard bus-type G&T devices. These bars may be
positioned for grounding either the three upper or the three lower
terminals of a six terminal device, as required. Bars are configured
to prevent closing the terminal doors when they are installed (Figure
3.1.d).
Bushing Wrenche:
A special wrench is provided only on G&T
devices that have interchangeable primary disconnects. These
convertible devices are equipped with extra 1200, 2000, and/or
3000 ampere terminals. This bushing wrench is recommended for
removal and installation of primary disconnects (knobs or finger
cluster assemblies) to allow the G&T to be used in circuit breaker
compartments that have the same short circuit currents available but
differing continuous current ratings.
Interlock Keyse:
Key interlocked terminal access doors are provided
to supplement site lock out, tag out strategies. Required by G&T
standard C37.20.6, these Kirk
®
Key interlocks prevent simultaneous
access to both the upper and lower terminals only on six terminal
devices. Special coded keys are provided for use with each G&T
device. If keys are lost or damaged, contact Eaton for replacement.
Figure 3.1.a. RackingHandle
Figure 3.1.d. Grounding Copper Shorting Bars
Figure 3.1.b. Grounding Cable
Figure 3.1.c. Bushing Wrench
