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| Motion Control: speed-Grip Spacers - 3300HT Series |
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The trend toward higher transmission voltages and load currents has brought many changes in line construction. High temperature spacers are necessary on horizontal bundle construction to prevent damage from wake-induced oscillation, ice unloading and short circuit clashing. ACA ’s HiTemp™ Speed-Grip™ Spacer employs elastomer bushed clamps to firmly grip the conductor while eliminating possible fatigue breaks of the fully annealed aluminum strand. It is specially designed to allow rapid installation without special tools.
What Is Wake-Induced Oscillation?
Wake-Induced Oscillation is a swinging motion, like a pendulum, that is caused when wind blows across a bundle of conductors. As the conductors move back and forth, there is a potential of the conductors to touch, thus causing significant damage. ACA has been researching oscillation to understand it and has developed improved accessories to control it.
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Features:
High Temperature Application
The HiTemp Speed-Grip Spacer is specifically designed with elastomer bushed clamps that can withstand the rigors of increased temperatures (up to 250º C) of ACSS and ACSS/TW conductors.
Fully Assembled
The HiTemp Speed-Grip Spacer is ready for immediate installation. The bushings are seated, frames interlocked and the wedge-lock bolt in place.
Quick Installation
With no loose parts, whether from a helicopter, spacer cart or bucket, the HiTemp Speed-Grip spacer takes seconds to install.
No Special Tools
With the wedge-lock breakaway bolt, no special tool or torque wrench is needed. Simply tighten the bolt until the head shears off, indicating proper torque has been achieved.
Customized Design
The HiTemp Speed-Grip spacer is designed with a standard 18 inch spacing. For applications requiring other spacing dimensions, contact the ACA Technical Support Team.
Vibrec™ Damper
Recommendation Program
The Vibrec damper recommendation program assists in HiTemp Speed-Grip Spacer requirements for transmission lines.
For more information contact the ACA at 1.800.866.7385.
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