Utility Solutions BREAK-SAFE USBS-15-1-PS Operation Manual page 4

The BREAK-SAFE
®
power factors of 70%-80% for both load break and load make applications. However,
the tool is rated by system voltages. For example, a 15 kV tool on a 15 kV system will
usually experience voltages of 15 kV / √3 or about 8.6 kV. It is at these actual (√3 ) system
voltage levels that the tool is rated for line charging and cable charging applications.
The BREAK-SAFE
®
15 kV. This does not mean the tool is rated for phase to ground applications of a 27 kV
system. Use a 15 kV BREAK-SAFE
BREAK-SAFE for 27 kV system voltages and below. Use a 38 kV BREAK-SAFE
®
kV system voltages and below. Use a 46 kV BREAK-SAFE
and below.
The tool is designed to be used on three phase systems, but only on a single phase at a
time. Typical three phase applications require three separate tools.
Outlined below are some circuit restrictions known to exist:
• Do not utilize the BREAK-SAFE
can produce over-voltage situations. An example of this involves switching
unloaded transformers that are delta-connected three phase and wye-
connected three phase with primary neutral ungrounded.
• The tool should never be used in phase-to-phase applications.
• Do not utilize the BREAK-SAFE
• Do not utilize the BREAK-SAFE
WARNING
!
Only trained and qualified personnel should operate,
inspect and maintain this equipment.
WARNING
!
The BREAK-SAFE is not waterproof. Do not use the BREAK-SAFE
®
wet conditions. If inclement weather is expected after installation, cover
tool with an approved insulating rubber blanket.
WARNING
!
Carefully inspect the tool prior to each use. Damaged components
can result in personal injury and or equipment damage.
Line and Tool Preparation
1. Do not exceed the maximum voltage or amperage rating of the tool (TABLE 1).
2. Insulate the pole and conductor as required by the supervising utility safety practices.
3. Clean the conductor at each location where the BREAK-SAFE
be attached. Clean and inspect the conductor bar before attaching a jumper cable.
4. If the BREAK-SAFE
attachment fasteners are tight and secure.
B-01031 USBS Manual (12-19-18)
has been tested to the full voltage and amperage rating for nominal
USBS-15-1-PS and USBS-15-2-PS models have been tested at full
for 15 kV system voltages and below. Use a 27 kV
®
®
®
!
!
®
!
is equipped with a duckbill head (USBS-XX-2-PS) ensure that all
®
®
tool in situations where ferroresonance
®
to switch unloaded transformers.
to switch capacitor banks.
WARNING
!
When working with the BREAK-SAFE
energized at all times. Never consider the tool body as rated insulation.
WARNING
!
The BREAK-SAFE
in
used in a temporary capacity only.
WARNING
!
Always remove the BREAK-SAFE
jumper attached to the conductor bar, after each load break operation.
The BREAK-SAFE
nor is it considered a "visible gap".
4
®
for 46 kV system voltages
always assume the tool is
®
is NOT a fuse. It should be
®
from the circuit, or remove the
®
is not rated insulation
®
and jumper cable will
®
for 38
!
!
!