nsible for its content.
I n s u l a t o r O p t i o n s
I
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IMPulse NC, INC.
The Power to Keep People Moving
T
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D
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N
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C
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A
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TM
3:
*Based on a 2 times safety factor.
054989-400
05954-400
055338-400
272400-400
05498-400
054979-400
055356-400
055355-400
054973-440
054987-400
05577-400
Insulators. The eye and
clevis ends are cast of qual-
ity ductile iron or bronze.
The tapped ends are of cold-
drawn steel. All fittings are
hot-dipped galvanized, and
swaged to the ends of the fi-
berglass rod. After assembly,
the exposed fiberglass rod is
coated with an alkyd paint for
protection from UV damage
and weathering.
Four end fitting combinations
are commonly used to suit
a variety of design needs.
Included are two clevises
in the same In-Line plane,
two clevises at Rotated
right angles, clevis and eye
at Rotated right angles,
and clevis and tapped ends.
Other combinations are pos-
sible, depending on customer
requirements.
IMPulse NC offers both 5/8-
inch and 7/8-inch fiberglass
rod insulators. The 7/8-inch
fiberglass rod is recom-
mended for use in proximity
to frogs and crossovers. This
application provides greater
impact resistance to flying
trolley poles. Both 5/8-inch
and 7/8-inch fiberglass rod
applications are 00% proof
tested to their rated tension
prior to product shipment.
IMPulse NC Strain Insula-
tors can be furnished in vir-
tually any length; however,
the minimum recommended
insulating length is five inch-
es for system voltages up to
750 VDC contact systems.
Please see the following
page for details on each style
of IMPulse NC Strain Insula-
tors.
Trans*Lite Strain Insulator End Fittings
Many factors are used to develop the Strain Insulators to meet specific needs. Existing structures, service require-
ments and aesthetic values are all considerations of the overhead contact system design. IMPulse NC Strain
Insulators are made with high-quality fiberglass rod used to provide strength and electrical resistance required by
the IMPulse NC Trans*Lite high-voltage insulators.
The end fittings provided on this page represent the broad array of connection methods for IMPulse NC Strain
Tran*Lite I
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IMPulse NC, INC.
The Power to Keep People Moving
T
H
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S

D
O
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U
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E
N
T

C
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T
A
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S

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A
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A
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F
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D
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A

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.
TM
3:2
*Based on a 2 times safety factor.
Clevis/Clevis (In-Line)
Part Number
A
B
Rod
Rivet
Recommended Maximum
Working Load Rating (lbs.)
054960-6XXX
054973-440
054973-440
7/8
7/6
5,000
054975-6XXX
055355-400
055355-400
7/8
/2
5,000
054985-6XXX
055356-400
055356-400
5/8
/2
5,000
054990-6XXX
054987-400
054987-400
5/8
3/4
0,000
056273-6XXX
05577-400
05577-400
7/8
5/8
0,000
057040-6XXX
054987-400
054987-400
5/8
3/4
0,000
Clevis/Clevis (Rotated)
Part Number
A
B
Rod
Rivet
Recommended Maximum
Working Load Rating (lbs.)
054984-6XXX
055356-400
055356-400
5/8
/2
5,000
054995-6XXX
054973-400
054973-400
7/8
/2
5,000
0556-6XXX
054987-400
054987-400
5/8
3/4
0,000
Eye/Eye (In-Line)
Part Number
A
B
Rod
Rivet
Recommended Maximum
Working Load Rating (lbs.)
055263-6XXX
054989-400
054989-400
5/8
N/A
5,000
05559-6XXX
272400-400
272400-400
7/8
N/A
20,000
Strain Insulators

Rotated 90 degrees
A
B
A
B
EXAMPLE
In-Line
Rotated
XXX= Length in Inches for ordering purposes
Example: XXX=14.0 and would be part number 054960-6140.
Strain I
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IMPulse NC, INC.
The Power to Keep People Moving
T
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D
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C
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A
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A
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A

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N
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N
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S
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TM
3:3
*Based on a 2 times safety factor.
Eye/Eye (Rotated)
Part Number
A
B
Rod
Rivet
Recommended Maximum
Working Load Rating (lbs.)
056203-6XXX
055338-400
055338-400
7/8
N/A
5,000
05626-6XXX
054989-400
054989-400
5/8
N/A
5,000
Eye/Clevis (In-Line)
Part Number
A
B
Rod
Rivet
Recommended Maximum
Working Load Rating (lbs.)
05496-6XXX
054989-400
055356-400
5/8
/2
5,000
055709-6XXX
05954-400
054987-400
5/8
3/4
0,000
Eye/Clevis (Rotated)
Part Number
A
B
Rod
Rivet
Recommended Maximum
Working Load Rating (lbs.)
055289-6XXX
054989-400
055356-400
5/8
/2
5,000
055339-6XXX
055338-400
055355-400
7/8
/2
5,000
05589-6XXX
05954-400
054987-400
5/8
3/4
0,000
Clevis/Tapped End
Part Number
A
B
Rod
Rivet
Recommended Maximum
Working Load Rating (lbs.)
054964-6XXX
054973-400
05498-400
7/8
/2
5,000
054983-6XXX
054356-400
054979-400
5/8
/2
5,000
Strain Insulators

Rotated 90 degrees
A
B
A
B
EXAMPLE
In-Line
Rotated
XXX= Length in Inches for ordering purposes
Example: XXX=14.0 and would be part number 054960-6140.
Strain I
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IMPulse NC, INC.
The Power to Keep People Moving
T
H
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S

D
O
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U
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E
N
T

C
O
N
T
A
I
N
S

P
R
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P
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T
A
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Y

A
N
D

C
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N
F
I
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E
N
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I
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D
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A

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F

I
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P
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N
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,

I
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N
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R
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A
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P
A
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T
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F

S
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A
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L

B
E

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A
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W
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W
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P
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N
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C
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TM
3:4
*Based on a 2 times safety factor.
054960-6115
.88 Clevis/Clevis Trans*Lite
* Dimensions are for reference only.

Weight
2.8 lbs.

Used Materials
Item #
Part
Material
A
Clevis
Ductile Iron,
Hot Dip Galvanized
B
Bolt, Nut, & Lockwasher
Steel,
Hot Dip Galvanized
C
Rod
0.88Ø Epoxy Fiberglass
D
Protective Coating
Gray Alkyd Based Enamel
Paint
Ratings
Type
Details
*Ultimate Load (F)
0,000 lbs.
Leakage Distance
9.50 in.
Dry Flashover
126.3 kV
Wet Flashover
42.7 kV
Tran*Lite
Photograph of the .88 Clevis/Clevis Trans*Lite I
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IMPulse NC, INC.
The Power to Keep People Moving
T
H
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S

D
O
C
U
M
E
N
T

C
O
N
T
A
I
N
S

P
R
O
P
R
I
E
T
A
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Y

A
N
D

C
O
N
F
I
D
E
N
T