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

Dynamic Line Rating

SMARTLINE (Dynamic Line Rating) DLR Software

To address and eliminate these concerns, the self-powered sensors used in Lindsey’s SMARLTINE next generation (Dynamic Line Rating)DLR system are available with an Iridium satellite radio communication option. This provides a direct data path from the sensor to the satellite, and from there to the SMARTLINE (DynamicLine Rating)DLR software via secure cloud-based communications.

The advantages of this approach?

·         The sensors are able to communicate the monitored data from any transmission span, regardless of location.

·         No additional communication infrastructure or equipment is required.

·         They are secure. The radio is built-in to the sensor and transmits only non-operational measured data (conductor temperature, line power, clearance-to-ground, and conductor vibration) directly to the DLR software.

·         The self-powered sensors eliminate the need for remote power sources.

To talk about how Lindsey’s next generation DLR system and satellite communications can address your transmission line rating concerns, contact Lindsey….

Lindsey ManufacturingCo. (LMC)  is located in Azusa, California, Near Los Angeles

Zip Code: 91702

P.O. Box 877   Tel. 1(626) 9693471

760 N. Georgia Ave  Fax. 1(626) 969 3177

Five Communication Issues Associated with Dynamic Line Rating

Five Communication Issues Associated with Dynamic Line Rating

Communications have long been a complicating issue for Dynamic Line Rating (DLR) systems.  Why?  DLR systems include a series of sensors installed on carefully selected transmission line spans in order to collect conductor information.

Here are five common communications issues common to traditional DLR systems.

1. Solar-charging: Some monitoring devices communicate through a battery-powered radio recharged via solar panels. A few days of cloudy or stormy weather, snow buildup, or even bird droppings can interfere with proper charging. As DLR requires continuous data feeds, the result is data dropout and compromised DLR system operation.
2. Remote installation: Optimizing a DLR system may require monitoring devices be installed on spans in remote locations, not close to existing communication infrastructure such as in remote or unpopulated areas. In this situation, devices dependent on cellular data modems impractical.
3. Improper Installation: Radio systems require proper antenna selection and alignment. Improper installation can result in data dropout.
4. Excess Complexity: Costly repeater radios may be required if the radio haul is long, increasing system complexity.
5. Cost: Microwave communication is not practical due to the size, cost, and power requirements of the equipment.

For more details visit here:  Dynamic Line Rating

High Voltage Insulators

The High Voltage Insulator Section, part of the Lindsey Manufacturing Co., is heavily involved with domestic and international technical activities.

The mission of the section is to develop product standards and advocate technical and industry positions that are in the best interests of the industry, member companies, and the users of their products throughout North America and the world.

The section accomplishes its mission through active, effective, and organized marketing and technical programs, and related activities.

Medium Voltage Insulators

In addition to our range of standard insulators, we specialise in customer specific epoxy insulators and epoxy bushings for circuit breakers, fuse housing, delimiters, earth switches, gas-insulated and oil-insulated switchgears, capacitors and transformers.

Lindsey Manufacturing Co.  Supports you with your epoxy insulator and bushing-development from the beginning and offers a various range of testing-equipment starting with electric serial tests, x-ray testing, gas-leakage-testing up to customer-specific individual inspections.

Transmission Line Stringing Equipment

Lindsey Manufacturing Co. can be considered a partner for its customers with reference to design, manufacture and supply of overhead lines stringing machines and accessories.

Lindsey Manufacturing Co.  has a great experience in the field of stringing equipment, and it is able to meet any requests from special design to customized assistance.

Lindsey Manufacturing Co.  designs, manufactures and supplies machines for power lines stringing: winches, pullers, tensioners and puller-tensioners especially designed for cables and ropes stringing operations.

Lindsey offers a full range of conductor clamps for extra high voltage

Lindsey offers a full range of conductor clamps for extra high voltage (EHV) through medium voltage, distribution class applications.
http://lindsey-usa.com/hardware/conductor-clamps/

Pole Line Hardware

Lindsey’s Pole Top Bracket securely mounts to a pole top for installation of vertical insulator directly above the center of the pole for more uniform appearance installation to the pole is accomplished with two bolts (not furnished with brackets) witch pass through the pole and side plates and are secured with nuts at both ends.

http://lindsey-usa.com/wp-content/uploads/2015/10/Pole-Top-Bracket.pdf

Hole sizes in the side plates are 13/16”. Brackets are adjustable to fit poles from 71/2 to 16”. The top plate has a 5” bolt circle, with 11/16” holes, and center bolt hole 15/16” for insulator mounting. The Lindsey No. 8234 Drilling Jig shown in Section 8 is ideally suited for drilling mounting holes in the pole. The photo shows a typical triangular construction using the No. 2050 Pole Top Bracket and a Lindsey Horizontal Fail Safe Extension Arm with shroud.
For more details: Pole Line Hardware and Insulating Bases

Pole Line Hardware and Insulating Bases

Lindsey Manufacturing Co. (LMC) manufactures a wide variety of transmission, distribution, substation, OEM and telecommunications products used by utilities. In addition, Lindsey products are used in the civil construction, transportation, gas and water industries. Products include construction and switching products, tools, insulators, arresters, pole line hardware, cable accessories, test equipment, transformer bushings and polymer precast enclosures and equipment pads.

Pole line hardware for linemen. You can find pole line hardware like drop hardware, anchors, cross over clamps, curved washers, carriage bolt.  Pole line hardware features quality components and connectors for the distribution electrical market.

Lindsey hardware and insulator assemblies are engineered for reliability and maintainability, aspects key to cost-effective transmission line construction and ownership. Destructive tests on every lot of load-rated hardware ensures performance. Designed in compatibility with bare hand and hot stick maintenance methods to guarantee fast and safe operation.

Pole Line Hardware

Lindsey-USA  is one of the leading supplier of Porcelain & Silicone Insulators, Machine & Double Arming Bolts, Square & Spring Washers, Forged Eyenuts & Eyelets, Products - Connectors, Clapms, Hardware, Insulators, Lines & Tower, Cutouts, and Overstock Items for distribution transmission.