A Redesigned Neutral Clevis

Posted by Hubbell Power Systems on Jan 3, 2019 3:12:00 PM

Four years, several prototypes and thousands of installations later, Hubbell has satisfied Alliant Energy’s need for a stronger neutral clevis.

BROKEN NEUTRALS

Alliant Energy identified the need for a better neutral clevis more than a decade ago. Their distribution system has an under-hung neutral and some neutral conductors were attached to poles with vertically mounted clevises. In other words, the neutral was held to the side of the vertically-oriented, spool insulator by a steel tie wire.

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Topics: Pole Line Hardware

How to Use Power-Installed Screw Anchors

Posted by Tim Staelens on Dec 17, 2018 3:12:00 PM

"Proper alignment" and "down pressure" are simple phrases to summarize proper anchor installation technique. The Power Installed Screw Anchor (PISA®) wrench transmits torque from the digger’s Kelly bar to the anchor hub. Note: The anchor rod only has to be of sufficient diameter to support the guy load.

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Topics: Anchors

How to Install Large Enclosures

Posted by Rob Fox on Dec 11, 2018 12:52:00 PM

Underground enclosures, commonly call handholes, pits, or vaults, come in a variety of shapes and sizes and house critical electrical, telecommunications, gas and water service connections. While each underground enclosure application may be different, there are a few installation fundamentals that should be followed to minimize field damage and help insure many years of use.

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Topics: Enclosures

The Nature and Manifestation of Corona Discharge

Posted by Robert Ransone on Dec 4, 2018 2:51:00 PM

In physics, the glow and audible event occurring when an insulator is exposed to excessive voltages is called a corona. It may also be known in the electric industry as “corona discharge,” “plume discharge,” “brush discharge” or “glow discharge.”

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Topics: Insulators

How to Install Small Enclosures

Posted by Rob Fox on Nov 28, 2018 2:28:00 PM

Small underground enclosures, commonly called handholes or pits, can come in a variety of shapes and sizes. Enclosures house critical electrical, telecommunications, gas, and water service connections. Each installation and application is different, but there are common installation guidelines that when followed will help to minimize field damage and ensure longevity.

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Topics: Enclosures

Specifying ANSI-SCTE Enclosures

Posted by Rob Fox on Nov 19, 2018 2:20:00 PM

Before specifying underground enclosures, one of the first questions to ask yourself is whether or not the enclosure will be used in deliberate traffic applications or non-deliberate traffic applications.

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Topics: Enclosures

Use Proper Tooling in Anchor Installation

Posted by Tim Staelens on Nov 13, 2018 10:38:00 AM

It is essential to use installing tools and anchors that are properly rated for trucks during the installation of power-installed screw anchors (PISA®). The high torque energy used in installing high-strength anchors requires the control of hazardous torque, which can be safely completed by proper tools. 

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Topics: Anchors

Understanding Grouted Rock Anchors

Posted by Tim Staelens on Nov 5, 2018 3:07:00 PM

The CHANCE® grouted rock anchor is designed to be used in situations where the soil is too rocky to use screw anchors, and the rock is fractured preventing the use of wedge style rock anchors. The forged knob on the end of the anchor along with any extension couplings provides the interference fit with the grout. The holding capacity of the anchor is dependent on the bond stress between the rock and the grout. The grouted rock anchor is designed to be used in line with the guy. Failure to install within 5° of alignment with the guy load will significantly lower strength.

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Topics: Anchors

The Secret to Our Storm Response

Posted by John Menne on Oct 29, 2018 2:57:00 PM

When it comes to storm response, Hubbell Power Systems (HPS) knows how to bring the H.E.A.T. (Hubbell Emergency Action Team). H.E.A.T. members have over 30 combined years of storm experience. The team responded swiftly to 2017 Hurricanes Harvey and Irma, and expect to do the same for all upcoming storms. In a time of a natural disaster, customers can be assured they are in the right hands with HPS, due to these key storm response characteristics. 

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Topics: Storm Response

Cleaning & Inspecting Your Gloves in the Field

Posted by Joseph Cardona on Oct 24, 2018 3:26:00 PM

Properly inspecting and storing your rubber insulating gloves could save your life. Rubber insulating gloves are the first line of defense against electric shock. ASTM F496 requires that rubber insulating gloves be inspected and electrically tested at a maximum interval of every six months, whereas field inspection is necessary prior to each use. The date code on the rubber insulating gloves should be checked to verify the most recent testing of gloves is still valid.

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Topics: Lineman Grade Tools, rubber gloves