Finding Flexibility in Motor Operators

Posted by Scott Spear on Oct 22, 2018 8:47:00 AM

The FlexMO has the ability to operate switches from 15 kilovolts to 765 kilovolts with five different open and closed speeds to choose from, and even the ability for two-speed closing and opening, which can help reduce stress on the switch. The FlexMO has the option to use SCADA technology to open and close the switch remotely. Easily switch between local and remote modes on the control panel.

Read More

Topics: Switching & Fusing

Understand Differences between Versa-Tech® I, II, LT and XC Reclosers

Posted by Lisa Jones on Oct 16, 2018 1:58:00 PM

Multiple variations of the Versa-Tech® recloser are available to fit any single-phase application on the system, outside substation or anywhere down the line. The same base design allows for easy adaptation for engineering and linemen.

Read More

Topics: Recloser

The Life Expectancy of a Hotstick

Posted by Jason Dettmar on Oct 9, 2018 2:35:00 PM

Linemen often ask about the life expectancy of a hotstick. While there is no exact answer to this question, it can range anywhere from hours or days for a hotstick that is abused and damaged, to years or decades for a hot stick that is well cared for and maintained. While the hours or days is hopefully the exception, on occasion a hotstick does come back to the factory with tire tread marks on it or with damage that clearly indicates it was dropped from some height, probably around the height of the primary on a wood pole.  While an “accident” can cut the life of a hot stick short, there are a number of steps in the care and maintenance of a hot stick that can result in many years or even decades of service and protection for the linemen using them. 

Read More

Topics: Lineman Grade Tools

Versa-Tech® II & XC Recloser Smart-Grid Integration

Posted by Lisa Jones on Oct 2, 2018 4:55:03 PM

In 2014, a new generation of the Versa-Tech® recloser was introduced. The Versa-Tech II recloser was built on its predecessor’s, the Versa-Tech I, foundation with a number of additional capabilities such as protection, monitoring, and logging features.

Read More

Topics: Recloser

High Voltage Insulator Testing Capabilities

Posted by John Schonewolf on Oct 2, 2018 10:14:00 AM

To support design and development activities, we maintain a fully equipped electrical and mechanical test facility with the capability of performing virtually all of the industry required tests, including ANSI, IEC and CSA. 

Read More

Topics: Insulators

Challenges of Various Reclosers

Posted by Lisa Jones on Sep 24, 2018 9:53:00 AM

There are several types of automatic circuit recloser technologies for the electric utility industry. Each technology incorporates various feature classifications: number of phases, voltage class, medium for interruption, and control mechanism type. Both Oil Circuit Reclosers (OCR) and Electronic Reclosers have been in the industry for quite some time. Each of these recloser types provides a unique benefit to the power grid but also both present certain challenges.  

Read More

Topics: Recloser

4 Common Pilot Protection Schemes for Line Protection

Posted by Brian Dob on Sep 18, 2018 2:26:00 PM

There are four common pilot protection schemes for line protection used today: (1) Direct Underreaching Transfer Trip, (2) Permissive Overreaching Transfer Trip, (3) Direct Comparison Unblocking, and (4) Direct Comparison Blocking. We will examine the communications channel requirements and channel types used for each of the schemes.

Read More

6 Rules to Follow with a Downed Power Line

Posted by Todd Neville on Sep 14, 2018 11:18:00 AM

Power lines that are commonly seen in residential areas are not insulated and contain at least 7,000 volts. One should never be in close proximity to a power line that is hanging low or lying on the ground. Even if the line is not sparking the line is still not safe to touch or be near.

Read More

Topics: Storm Response

Quick Ship your Enclosures

Posted by Emily Herrington on Sep 11, 2018 10:29:34 AM

In order to better serve our customers, we now provide a quick ship program for our enclosure product line. This is a value-added service provided in an effort to respond to urgent needs. The shipments are processed out of our facilities in Lenoir City, Tennessee and Rocky Mount, North Carolina.

Read More

Topics: Enclosures

Evaluating Utility Foundations During Storm Restoration

Posted by Hubbell Power Systems on Sep 10, 2018 1:45:00 PM

Rising water can damage or weaken existing transmission line and substation utility foundations. In flooded areas, drilled shafts and driven piles need to be inspected to determine if damage has occurred as a result of erosion. Here’s what you need to check:

Read More

Topics: Foundations, Anchors