Clamps: aluminium alloy
frame: steel/hot dip galvanized
Bolts: stainless steel A2-80
Nuts: stainless steel A2-80
Washers: stainless steel A2
These rigid spacers are used at bundled conductors in overhead lines up to 380 kV in free spans and loops to maintain the subconductor spacing under the influence of
wind, ice loadings, galloping and short circuiting forces The clamps of these rigid spacers are rotatable without self-damping properties.
At triple and quad bundles they are used as groups.
It is not permitted to use the spacer bars as an earthing anchor point during maintenance work.
RIBE provides installation recommendations for the spacers based on CIGRE recommendations. The installation recommendations depend on the wind conditions applicable to the respective line. Please contact us for further information.
Repair of damaged conductors is possible with repair helicals or connector helicals.
If the repaired area is in the vicinity of the installation location of the spacer,please maintain the following:
- Do not place the spacer on the repair or connector helical.
- The installation location of the spacer shifts towards the shorter subspan.
- The distance between the ends of the repair or connector helical and the fastening helical of the spacer should be 20 cm.
1. safe spacing of the individual conductors of the conductor bundle under normal operating conditions.
During normal operating conditions which include wind and ice loads the subconductors of the bundle are kept in the intended arrangement (double, tripple or quad bundle), without the partial conductors colliding or the bundle becoming twisted or entangled.
The number and distance of the spacers wíll directly affect the performance.
The installation conditions specified by us on the individual catalog sheets need to be followed strictly.
2. Damping of aeolian conductor vibrations within the spans.
Aeolian conductor vibrations within the spans are absorbed by the field spacers avoiding damage of the conductor itself.
Spacer dampers reduce the resulting conductor vibrations by energy absorption within the elastic elements (= damping elements) of the clamp arm bearings.
1. safe absorption of the transverse forces acting on the conductor bundle during short-circuit currents.
During high short-circuit currents in rigidly grounded networks, the partial conductors smash against each other between the spacers, but stay distanced at the spacers, resulting in heavy bending stresses within the conductors. After switching off the short-circuit
the partial conductors bounce back, but are fixed via the spacers again resulting in heavy bending stresses within the conductors.
These stresses (lateral forces) must be absorbed by the spacers without permanent deformation of the spacers and without damaging the conductors.
Remark:
Due to the partly insulating articulated or elastic members between the
clamps and the frame or bar of the field spacers, no cross currents can flow via the field spacers.
Thus it won't be allowed to use spacers as a fixed grounding point during maintenance work.
2. avoidance of corona discharge.
Via appropriate design of the clamping elements of the spacers, the corona extinction voltage at spacers is higher than the required levels.
Frame, arms, clamps: aluminium alloy
Damping elements: silicone rubber
Bolts: stainless steel A2-80
Nuts: stainless steel A2-80
Washers: stainless steel A2, 200 HV
These spacers dampers are used at bundled conductors in overhead lines up to 380 kV in free spans and loops to maintain the subconductor spacing under the influence of
wind, ice loadings, galloping and short circuiting forces. The spacer dampers have a frame to which the articulated arms are attached via elastic silicone rubber elements.
These elastic elements allow the articulated arms to follow the movements of the conductors, e.g. in the case of short-wave conductor oscillations causing displacement-dependent reset forces and maintain the distance of the the conductors.
It is not permitted to use the frame as an earthing anchor point during maintenance work.
Repair of damaged conductors is possible with repair helicals or connector helicals.
If the repaired area is in the vicinity of the installation location of the spacer,please maintain the following:
- Do not place the spacer on the repair or connector helical.
- The installation location of the spacer shifts towards the shorter subspan.
- The distance between the ends of the repair or connector helical and the fastening helical of the spacer should be 20 cm.
RIBE provides installation recommendations for the spacers based on CIGRE recommendations. The installation recommendations depend on the wind conditions applicable to the respective line. Please contact us for further information.
1. safe spacing of the individual conductors of the conductor bundle under normal operating conditions.
During normal operating conditions which include wind and ice loads the subconductors of the bundle are kept in the intended arrangement (double, tripple or quad bundle), without the partial conductors colliding or the bundle becoming twisted or entangled.
The number and distance of the spacers wíll directly affect the performance.
The installation conditions specified by us on the individual catalog sheets need to be followed strictly.
2. Damping of aeolian conductor vibrations within the spans.
Aeolian conductor vibrations within the spans are absorbed by the field spacers avoiding damage of the conductor itself.
Spacer dampers reduce the resulting conductor vibrations by energy absorption within the elastic elements (= damping elements) of the clamp arm bearings.
1. safe absorption of the transverse forces acting on the conductor bundle during short-circuit currents.
During high short-circuit currents in rigidly grounded networks, the partial conductors smash against each other between the spacers, but stay distanced at the spacers, resulting in heavy bending stresses within the conductors. After switching off the short-circuit
the partial conductors bounce back, but are fixed via the spacers again resulting in heavy bending stresses within the conductors.
These stresses (lateral forces) must be absorbed by the spacers without permanent deformation of the spacers and without damaging the conductors.
Remark:
Due to the partly insulating articulated or elastic members between the
clamps and the frame or bar of the field spacers, no cross currents can flow via the field spacers.
Thus it won't be allowed to use spacers as a fixed grounding point during maintenance work.
2. avoidance of corona discharge.
Via appropriate design of the clamping elements of the spacers, the corona extinction voltage at spacers is higher than the required levels.
Frame, arms, covers: aluminium alloy
Damping elements: silicone rubber
Rods: ACS (aluminium clad steel)
These spacers dampers are used at bundled conductors in overhead lines up to 380 kV in free spans and loops to maintain the subconductor spacing under the influence of
wind, ice loadings, galloping and short circuiting forces. The spacer dampers have a frame to which the articulated arms are attached via elastic silicone rubber elements.
These elastic elements allow the articulated arms to follow the movements of the conductors, e.g. in the case of short-wave conductor oscillations causing displacement-dependent reset forces and maintain the distance of the the conductors.
It is not permitted to use the frame as an earthing anchor point during maintenance work.
Repair of damaged conductors is possible with repair helicals or connector helicals.
If the repaired area is in the vicinity of the installation location of the spacer,please maintain the following:
- Do not place the spacer on the repair or connector helical.
- The installation location of the spacer shifts towards the shorter subspan.
- The distance between the ends of the repair or connector helical and the fastening helical of the spacer should be 20 cm.
RIBE provides installation recommendations for the spacers based on CIGRE recommendations. The installation recommendations depend on the wind conditions applicable to the respective line. Please contact us for further information.
1. safe spacing of the individual conductors of the conductor bundle under normal operating conditions.
During normal operating conditions which include wind and ice loads the subconductors of the bundle are kept in the intended arrangement (double, tripple or quad bundle), without the partial conductors colliding or the bundle becoming twisted or entangled.
The number and distance of the spacers wíll directly affect the performance.
The installation conditions specified by us on the individual catalog sheets need to be followed strictly.
2. Damping of aeolian conductor vibrations within the spans.
Aeolian conductor vibrations within the spans are absorbed by the field spacers avoiding damage of the conductor itself.
Spacer dampers reduce the resulting conductor vibrations by energy absorption within the elastic elements (= damping elements) of the clamp arm bearings.
1. safe absorption of the transverse forces acting on the conductor bundle during short-circuit currents.
During high short-circuit currents in rigidly grounded networks, the partial conductors smash against each other between the spacers, but stay distanced at the spacers, resulting in heavy bending stresses within the conductors. After switching off the short-circuit
the partial conductors bounce back, but are fixed via the spacers again resulting in heavy bending stresses within the conductors.
These stresses (lateral forces) must be absorbed by the spacers without permanent deformation of the spacers and without damaging the conductors.
Remark:
Due to the partly insulating articulated or elastic members between the
clamps and the frame or bar of the field spacers, no cross currents can flow via the field spacers.
Thus it won't be allowed to use spacers as a fixed grounding point during maintenance work.
2. avoidance of corona discharge.
Via appropriate design of the clamping elements of the spacers, the corona extinction voltage at spacers is higher than the required levels.
Amour-grip:
- quick assembly and disassembly
- no wrench needed to apply the torque
- visual control of correct assembly
- no damage to the conductor due to incorrect assembly
Frame, arms, covers: aluminium alloy
Damping elements: EPDM
Bolts:stainless steel A2-80
Washer: stainless steel A2, 200 HV
The spacer dampers are used for 3-conductor bundle in the free span of overhead power lines up to 380 kV in order to maintain the mutual spacing of the partial conductors of the line bundle under the effect of wind, ice load, cable jamming and short-circuit forces.
The spacers consist of a central part to which the articulated arms are attached by means of elastic elements made of silicone rubber.
These elastic elements enable the articulated arms to follow the movements of the partial conductors, e.g. in the case of short-wave conductor vibrations.
In doing so, they cause path-dependent restoring forces so that the partial conductors maintain the intended distance.
It is not permitted to use the spacers as earthing anchors during maintenance work.
RIBE provides installation recommendations for the FAH based on recognised CIGRE recommendations.
The installation recommendations are made depending on the wind conditions applicable to the line.
Please contact us for more information.
If the conductor are damaged, they can be repaired using a repair rods or connector rods.
If the repaired area is in the area of the installation location of the spacer damper, the following must be observed:
- Do not place the spacer on the repair or connector helical.
- The installation point of the spacer shifts in the direction of the shorter partial field.
- The distance between the ends of the repair or connector helical and the fastening helical of the spacer should be 20 cm.
1. safe spacing of the partial conductors of the bundle conductor under normal operating conditions.
The partial conductors of the bundle must be safely spaced by the spacers under normal operating conditions (wind, ice load) in the intended arrangement (2-rope, 3-rope or 4-rope bundle) distance without the partial conductors colliding or the bundle becoming twisted or entangled of the bundle occurs.
The number and the installation distances of the spacers have a particular influence on the fulfilment of this task.
2. absorption of rope vibrations caused by air currents in the span field
By means of suitable designs of the spacers, vortex-excited rope vibrations of the conductor in the tensioning field are absorbed and transmitted by the spacers without causing damage to the conductor. Self-damping spacers dampen the resulting cable vibrations by consuming energy in the elastic elements (= damping elements) of the bearing of the clamp arms.
1. safe spacing of the partial conductors of the bundle conductor under normal operating conditions.
The partial conductors of the bundle must be safely spaced by the spacers under normal operating conditions (wind, ice load) in the intended arrangement (2-rope, 3-rope or 4-rope bundle) distance without the partial conductors colliding or the bundle becoming twisted or entangled of the bundle occurs. The number and the installation distances of the bay spacers have a particular influence on the fulfilment of this task. For this reason, the installation conditions specified by us on the individual catalogue sheets
2. absorption of cable vibrations excited by air currents in the tensioning field.
By suitable design of the spacers, vortex-excited rope vibrations of the conductor ropes in the tensioning field are absorbed and transmitted by the spacers without causing damage to the conductor. Self-damping spacers dampen the resulting cable vibrations by consuming energy in the elastic elements (= damping elements) of the bearing of the clamp arms.
1. safe absorption of the transverse forces acting on the conductor bundle during short-circuit currents.
With the high short-circuit currents in rigidly earthed networks, the partial conductors collide between the spacers but are spaced apart at the spacer. As a result the conductor in the vicinity of the spacers are strongly bent. After switching off the short-circuit the partial conductors move freely away from the bundle axis to the outside but thereby distanced from the spacers and again strongly bent in their vicinity. These stresses (transverse forces) must be absorbed by the spacers without causing permanent deformation of the spacer and without damaging the cables.
Remark:
Due to the partly insulating articulated or elastic links between the clamping jaws and the frame or web of the jaws and the frame or web of the bay spacer, no cross currents can flow across the bay via the spacer except for the charging currents. It is therefore also not permitted to use the spacers as an earthing anchor point during maintenance work.
2 Avoiding partial discharges
By appropriately shaping the clamping elements of the spacers, the spacers are designed in such a way that the tuft discharge voltage at the spacers is higher than the required values.
Advantages over previous types of construction:
- single piece frame
- less individual parts
- Damping angle 45 degrees
- EPDM damping element
- Compression of the damping element
- Potential equalisation via damping element
- Limitation via stop at strongest frame point
- Faster in-house assembly due to partial automation
- 1 articulated arm for all positions
- Modular construction - parts compatible with each other
frame, hinge: aluminium alloy
damping elements: EPDM
rods: ACS (Alumoweld)
The spacer dampers are used for 3-conductor bundle in the free span of overhead power lines up to 380 kV in order to maintain the mutual spacing of the partial conductors of the line bundle under the effect of wind, ice load, cable jamming and short-circuit forces.
The spacers consist of a central part to which the articulated arms are attached by means of elastic elements made of silicone rubber.
These elastic elements enable the articulated arms to follow the movements of the partial conductors, e.g. in the case of short-wave conductor vibrations.
In doing so, they cause path-dependent restoring forces so that the partial conductors maintain the intended distance.
It is not permitted to use the spacers as earthing anchors during maintenance work.
RIBE provides installation recommendations for the FAH based on recognised CIGRE recommendations.
The installation recommendations are made depending on the wind conditions applicable to the line.
Please contact us for more information.
If the conductor are damaged, they can be repaired using a repair rods or connector rods.
If the repaired area is in the area of the installation location of the spacer damper, the following must be observed:
- Do not place the spacer on the repair or connector helical.
- The installation point of the spacer shifts in the direction of the shorter partial field.
- The distance between the ends of the repair or connector helical and the fastening helical of the spacer should be 20 cm.
1. safe spacing of the partial conductors of the bundle conductor under normal operating conditions.
The partial conductors of the bundle must be safely spaced by the spacers under normal operating conditions (wind, ice load) in the intended arrangement (2-rope, 3-rope or 4-rope bundle) distance without the partial conductors colliding or the bundle becoming twisted or entangled of the bundle occurs.
The number and the installation distances of the spacers have a particular influence on the fulfilment of this task.
2. absorption of rope vibrations caused by air currents in the span field
By means of suitable designs of the spacers, vortex-excited rope vibrations of the conductor in the tensioning field are absorbed and transmitted by the spacers without causing damage to the conductor. Self-damping spacers dampen the resulting cable vibrations by consuming energy in the elastic elements (= damping elements) of the bearing of the clamp arms.
1. Safe spacing of the partial conductors of the bundle conductor under normal operating conditions.
The partial conductors of the bundle must be safely spaced by the spacers under normal operating conditions (wind, ice load) in the intended arrangement (2-rope, 3-rope or 4-rope bundle) distance without the partial conductors colliding or the bundle becoming twisted or entangled of the bundle occurs. The number and the installation distances of the bay spacers have a particular influence on the fulfilment of this task. For this reason, the installation conditions specified by us on the individual catalogue sheets, absorption of cable vibrations excited by air currents in the tensioning field.
By suitable design of the spacers, vortex-excited rope vibrations of the conductor ropes in the tensioning field are absorbed and transmitted by the spacers without causing damage to the conductor. Self-damping spacers dampen the resulting cable vibrations by consuming energy in the elastic elements (= damping elements) of the bearing of the clamp arms.
Remark: Due to the partly insulating articulated or elastic links between the clamping jaws and the frame or web of the jaws and the frame or web of the bay spacer, no cross currents can flow across the bay via the spacer except for the charging currents. It is therefore also not permitted to use the spacers as an earthing anchor point during maintenance work.
2 Avoiding partial discharges by appropriately shaping the clamping elements of the spacers, the spacers are designed in such a way that the tuft discharge voltage at the spacers is higher than the required values.
2. Safe absorption of the transverse forces acting on the conductor bundle during short-circuit currents.
With the high short-circuit currents in rigidly earthed networks, the partial conductors collide between the spacers but are spaced apart at the spacer. As a result the conductor in the vicinity of the spacers are strongly bent. After switching off the short-circuit the partial conductors move freely away from the bundle axis to the outside but thereby distanced from the spacers and again strongly bent in their vicinity. These stresses (transverse forces) must be absorbed by the spacers without causing permanent deformation of the spacer and without damaging the cables.
Advantages over previous types of construction:
- single piece frame
- less individual parts
- Damping angle 45 degrees
- EPDM damping element
- Compression of the damping element
- Potential equalisation via damping element
- Limitation via stop at strongest frame point
- Faster in-house assembly due to partial automation
- 1 joint arm for all positions
- Modular construction - parts compatible with each other