TEMPORARY RESTORATION SYSTEMS
TEMPORARY TOWERS are used for
Emergency restoration of transmission lines after natural disasters
Live line maintenance and repair of transmission lines
Repair or upgrade of steel lattice towers
Temporary towers for bypass construction
Bringing temporary power to remote areas, mines, field hospitals
Pre-construction of a transmission line
River crossings
Communication tower
Environmentally sensitive areas
TEMPORARY TOWERS help to
Enable rapid restoration in emergencies
Reduce the cost of repairs and maintenance
Eliminate power outages during repair
Reduce the need to buy outsourced electricity
Improve productivity during construction of TL
Improve customer relations by reaching remote locations
Minimize inconvenience to customer
Minimize environmental footprint
OUR TEMPORARY TOWERS are
A low-cost solution to restoring power quickly
Able to be erected manually by a small crew
Erected in 4 hours and dismantled in 1 hour
Easy to erect and to dismantle without heavy equipment
Where safety is paramount
Designed for 21st century HV transmission requirements
EMERGENCY RESTORATION
When a disaster strikes, temporary towers are used to restore
power quickly, while the permanent towers are replaced.
REGULAR MAINTENANCE
When line maintenance is
required, temporary towers are
used to keep power flowing,
without the need to commit
expensive equipment.
THE EVOLUTION OF
TEMPORARY TOWERS
In the beginning the Aluminum Lattice Tower.
The first generation of emergency tower was developed
in the 1970s as an aluminum lattice type.
This technology satisfied transmission requirements at
that time.
THE EVOLUTION OF
TEMPORARY TOWERS
Then, the Modular Aluminum Tower
In 1990, the first modular aluminum type tower
was introduced.
This second generation design solved many of the
shortcomings of the aluminum lattice tower.
THE EVOLUTION OF
TEMPORARY TOWERS
And today, the Advanced Modular Aluminum Tower
In 2002, the Advanced Modular Tower was
introduced by Tower Solutions Inc.
The new design meets all the TL challenges of the
21st century and beyond such as 765 kV, 198 kmph
wind and 600m span.
This new tower is a significant improvement, setting
the new standard.
ADVANTAGES
OF THE NEW TOWER
Faster and easier installation
Easier to store and transport
Can be erected in any terrain
Higher strength to weight ratio
Uses standard nuts and bolts
Fewer components and more adaptable
Special foundation not required
Maintenance free
Adaptable to any configuration
Base articulation has low friction surface
Attachment plate has 2 degrees of freedom
COMPONENTS
OF THE ADVANCED MODULAR TYPE TOWER
UNIVERSAL
ATTACHMENT
MAST SECTION
GIN
POLE
ARTICULATION
FOUNDATION
COMPONENTS
The Foundation
Very small footprint
Uses standard nuts and bolts
Designed for balanced load distribution
Can be expanded for soft soils
COMPONENTS
The Articulation
Allows free rotation in all directions
Tower can be orientated in any direction, without limit
Bronze alloy components reduce friction to a minimum
Makes it easy to erect the tower
Evenly distributed load
COMPONENTS
The Mast Section
High strength-to-weight ratio
Modular square design allows easy erection
Patented hole design maximizes strength and
minimizes wind resistance and weight
Hardware components are interchangeable
Optimal fit for storage in shipping container
Ends machined to tight tolerance to eliminate
alignment problems
Very high area of contact at section ends
Corner rail in each corner gives unrestricted sliding
movement for gin pole and fall arrestor
COMPONENTS
Universal Attachment Plate
A single attachment is used for both guywires and insulators
Two degrees of freedom means conductor movement is not
transmitted to tower
Made of only 4 parts, making assembly and installation easy
Transfer rods distribute load evenly to tower
COMPONENTS
Gin Pole
For lifting tower sections, insulators and other
tower components
Can be operated without heavy equipment
Easily attached to the tower section
High strength to weight ratio
Slides independent of lineman safety devices
SPECIAL TOOLS
Fall Arrestor
Keeps the line worker safely
attached to the tower
Remains attached to the
tower at all times
Never disconnects from the
tower
Travels freely upward, but
will not move down until
you want it to
Out of the way while
climbing the tower
SPECIAL TOOLS
Linemans Step
Gives the lineman a place to
rest when working on the
tower.
Lightweight and durable.
Securely attached to tower
but easy to move when
needed.
SPECIAL TOOLS
Capstan Winch
Gasoline powered winch
Special braking system
prevents uncontrolled
release
Simple operation
IEC certified
SPECIAL TOOLS
Helicopter Centering Tool
Easy to use
Makes it easy for a
helicopter to drop the upper
tower sections onto the
lower section
SPECIAL TOOLS
Crane
Can be used with short or long end to lift up to
2000 Kg weight.
Using a temporary tower as the crane, a
permanent steel tower can be erected without
the expense of a crane or helicopter.
SPECIAL TOOLS
Linemans Platform
Extendible to 12 outreach
from the tower
Lightweight and durable
Easy to install
Versatile and adaptable to
any orientation
TESTING and QUALIFICATION
Testing
Our towers are rigorously
tested in the lab and the field
OUR TOWERS comply with
IEEE 1070-1995
Transmission Modular Restoration Structure Components
IEC 60652
Loading tests on overhead Line Structures
Compression of Columns Test
6.6374 m (219-11/16) column tested to 290 kN (65,000 lb)
compression applied at center axes
maximum permanent deformation to be less than 0.508 mm (0.020 in)
Combined Bending and Compression Test
6.6374 m (219-11/16) column loaded to 445 kN (100,000 lb) compression and
22.2 kN (5,000 lb) cantilever load simultaneously
loads, elastic or permanent deflections, measured and recorded
maximum permanent deformation less than 0.508 mm (0.020in) in compression
and 2.54mm (0.100in) in bending
Ultimate Strength Bending Welds Test
6.6374 m (219-11/16) column bolted on one end to suitable test structure
cantilever load applied at rate of 8.9 kN/min (2000 lbf/min)
4 tests to be performed by rotating the column
in no case should the column have an ultimate strength less than an equivalent
moment of 190,000 Nm (140,000 ft.lbf)
Guy and Insulator Attachment Test
insulator attachment to be pull tested at transverse holes locations to 267 kN (60,000
lb)
insulator attachment is installed onto section fixed on bench
load to be held for 5 minutes then released
there should not be any kind of failure or excessive permanent deformation
Bolt and Nut Ultimate Strength Test
3 samples from production run of 20 mm tower connections bolts to be pull tested
average strength of 3 assemblies to be greater than 107 kN (24,000 lb)
IEEE standard indicates 8 x 15.9mm (5/8) splicing bolts but Tower Solutions Inc. uses
8 x 19.04mm (3/4) splicing bolts with a designed UTS = 40,100 lb
Gimbal Compression and Transverse Test
first production unit of a gimbal to be tested in compression to 578 kN
(130,000 lb) with load applied to axis of gimbal and transverse
compression to 44.5 kN (10,000 lb)
no sign of excessive permanent deformation of the gimbal to be noted
at this load
Gimbal Transverse Test
first production unit of a gimbal to be tested in compression to 44.5 kN
(10,000 lb)
no sign of excessive permanent deformation of gimbal to be noted at
this load
PRIOR PROJECTS
CHAINETTE Configuration
Tower height: 49.6 m (163)
Voltage
Voltage
765 Kv
765 Kv
Span
Span
1500 (457 m)
1500 (457 m)
Conductor
Conductor
1351.5 kcm/ACSR
1351.5 kcm/ACSR
Dipper
Dipper
4 bundle
4 bundle
NESC
NESC
Grade B hvy
Grade B hvy
Wind
Wind
4 PSF
4 PSF
Ice
Ice
mm)
mm)
0 deg 1/2 (12.5
0 deg 1/2 (12.5
Height of
Height of
conductor at tower
conductor at tower
130 (40m)
130 (40m)
Height of
Height of
conductor at half span
conductor at half span
50 (15m)
50 (15m)
PRIOR PROJECTS
HORIZONTAL SUSPENSION
Tower height: 55.1 m (181)
Voltage
Voltage
240 Kv
240 Kv
Span
Span
1800 (600 m)
1800 (600 m)
Conductor
Conductor
795 kcm/ACSR
795 kcm/ACSR
Drake
Drake
2 conductors/phs
2 conductors/phs
NESC
NESC
Grade Hvy
Grade Hvy
Wind
Wind
8 PSF
8 PSF
Ice
Ice
-5 deg 1/4 (6 mm)
-5 deg 1/4 (6 mm)
Height of
Height of
conductor at tower
conductor at tower
167 (51m)
167 (51m)
Height of
Height of
conductor at half span
conductor at half span
64 (21m)
64 (21m)
PRIOR PROJECTS
VERTICAL SUSPENSION
Tower height: 45 m (148)
45 m
148
26.5 m
87
Voltage
Voltage
240 Kv
240 Kv
Span
Span
1867 (569 m)
1867 (569 m)
Conductor
Conductor
477/type6.4/ACSR/SD
477/type6.4/ACSR/SD
20.38mm D
20.38mm D
2 bundle Hawk
2 bundle Hawk
double circuit
double circuit
UTS
UTS
83,800 N
83,800 N
Tension
Tension
37364 at 200C, 12 mm
37364 at 200C, 12 mm
ice, 400 Pa wind
ice, 400 Pa wind
18683 N at 4 C
18683 N at 4 C
Max wind
Max wind
150 kph
150 kph
Ice
Ice
1/2 (12.5 mm)
1/2 (12.5 mm)
Clearance
Clearance
between phases
between phases
Height of
Height of
conductor at tower
conductor at tower
20 (6.1m) vertical
20 (6.1m) vertical
5 (1.5m) horizontal
5 (1.5m) horizontal
87 (26.5m)
87 (26.5m)
Height of
Height of
conductor at half span 94.1 (28.7m)
conductor at half span 94.1 (28.7m)
PRIOR PROJECTS
VERTICAL SUSPENSION
Tower height: 78.3 m (257)
Voltage
Voltage
765 Kv
765 Kv
Span
Span
400 m (1,312)
400 m (1,312)
Conductor
Conductor
Bersemis ACSR
Bersemis ACSR
Tension
Tension
7953 kg at 32C
7953 kg at 32C
full wind
full wind
Max wind
Max wind
198 km/h (925 Pa)
198 km/h (925 Pa)
Clearance
Clearance
between phases
between phases
15.5m
15.5m
Height of
Height of
conductor at tower
conductor at tower
30.8m (101)
30.8m (101)
PRIOR PROJECTS
DOUBLE DEAD-END
Tower height: 52.5 m (172)
90 deg conductor angles
Voltage
Voltage
750 Kv
750 Kv
Span
Span
650 m
650 m
Conductor
Conductor
Bluejay
Bluejay
4 bundle
4 bundle
UTS
UTS
83,800 N
83,800 N
Tension
Tension
20,750 N
20,750 N
Max wind
Max wind
160 km / h
160 km / h
Clearance
Clearance
between phases
between phases
21.3 (6.5m)
21.3 (6.5m)
Height of
Height of
conductor at tower
conductor at tower
87 (32m)
87 (32m)
Height of
Height of
conductor at half span 55.8 (17m)
conductor at half span 55.8 (17m)
PHOTO GALLERY
Optimized storage
in standard ISO
size containers for
easy deployment in
emergencies.
Transport and
storage are also
made easy.
Base assembly pinned down, waiting for
tower to be connected
Shipping rods still attached
Crane hoisting of temporary
towers
Ginpole is used to hoist
mast sections into position
Lifting
insulators into
position using
ginpole
Lifting mast
section into
position
Universal Attachment Plate
Attached to tower before raising
Chainette configuration
Two temporary towers
alongside steel tower
Conductor transfer to
temporary towers
Climbers view
We dont just sell towers
We sell solutions
info@towersolutions.ca
7030 Woodbine Ave., Suite 500, Markham, Ontario L3R 6G2 Canada
