Multi-Conductor Distribution Rollers

Multi-Conductor Distribution Roller is constructed from light weight, high strength 356-T6 aluminum alloy and may be ordered with any of the following accessories.

A – No. 5403 Roller.
B – No. 5413 Hook Assembly.
C – No. 5423 Cross Arm Bracket.
D – No. 5433 Suspension Yoke.
E – No. 5443 Up-Lift Roller.
G – No. 5463 Running Board.
Running Boards are designed for the Lindsey Multi Conductor Distribution Rollers to assure each conductor and pulling line is deposited in the proper sheave groove. Running boards are proof tested at the factory prior to shipment. Swivels may be ordered factory installed. Safe working load is 2,500 pounds. All ferrous materials are hot dip galvanized or electro cadmium plated. Sheaves are mounted on precision ground Conrad type, permanently lubricated and sealed, maintenance-free ball bearings. Weight as shown: 25 pounds.

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Fail Safe Insulator Bases

Lindsey Fail-Saf  insulator bases are designed to fail safe at overloads predictably below the rated insulator strength. This permits the base to plastically deform and yield in to the load without fracture, avoiding damage to the insulator and the associated cascading effect, holding he conductor above ground for easy repair.

The reliability and ultimate performance of horizontal line post insulators mounted on rigid structures is limited by the insulators ability to withstand severe loading conditions, such as a broken conductor, galloping, heavy ice loading or other highly unbalanced longitudinal loads. It is well known that when horizontal line post insulators are mounted on flexible structures, their ability to withstand severe longitudinal loading is greatly enhanced.

The Lindsey Fail-Safe Base improves the integrity of horizontal line post construction by providing a flexible support for the insulator. This flexibility lowers the dynamic stresses induced in an insulator by an impact load. In addition to this elastic flexibility, Fail- Safe Bases are designed to plastically deform at a predetermined level, thus limiting the maximum cantilever load that can be applied to the insulator. These features protect the insulator not only from longitudinal overloads but also from vertical overloading, e.g. from severe ice conditions.
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Fail Safe Insulator Bases Pole Line Hardware

Fail Safe Insulator Bases Pole Line Hardware

Emergency Restoration System

Pole Line Hardware Lindsey Manufacturing Co.

What is Dynamic Line Rating?

Traditional operational limits of a transmission line are established through “static” transmission line rating methodologies. The common practice for transmission line rating is to select very conservative values for the environmental operating conditions of the line. The resulting static line rating is similarly very conservative.

Today, seasonally adjusted ratings (SAR) and ambient adjusted ratings (AAR) push upward a line’s traditional static ratings by simply acknowledging that more realistic environmental conditions exist. Dynamic Line Rating, or DLR, is a transmission line’s actual real-time or forecast power carrying capacity. It is based on the conductor’s operating temperature using real-time line behavior data and weather conditions. Dynamic Line Rating (DLR) is the natural and logical extension of the seasonal and ambient adjusted ratings trend. Why assume a line has only four ratings a year based on seasons when real-time data and line behavior modeling can provide reliable daily or even hourly ratings? This is especially significant as a line’s DLR is typically 10 – 25% higher than its static rating. electricenergyonline

Numerous studies have shown this additional capacity provides opportunities in economic dispatch, trading, operations, and congestion mitigation. Application of DLR is also a powerful tool for improving contingency planning, cost effectively addressing lines with slow load growth, and deferring or eliminating the need for line upgrades.

Yet with all these economic advantages, DLR is sparsely deployed. The reasons are two-fold. First generation DLR systems presented numerous issues to early adopters, discouraging wider deployment. Secondly, demand drivers were either weak in the deregulating transmission environment, or were poorly understood.

For more details click here: Dynamic Line Rating