Six ways to avoid electrical testing problems

It is important to safely start up electrical systems and restarting them securely after routine maintenance has taken place. Six tips to avoid these problems are highlighted below.

11/08/2016


It is important to safely start up electrical systems and restarting them securely after routine maintenance has taken place to avoid an problems that may occur. Courtesy: L&S ElectricIn any large-scale industrial facility, one of the critical times where problems occur is starting up electrical systems and restarting them after routine maintenance has taken place. In either case, it is important to do so both safely and securely to reduce any problems that could occur. Those problems may be associated with a reduced equipment lifespan. Alternatively, with the safety of those who work in the area.

When it is time to start the electrical systems at your facility, use technicians who have specialized training. This includes any electrical testing and troubleshooting required for the startup to occur without problems. Any issues occurring during this time may result in a loss of productivity due to unnecessary delays. Perform several tests before startup to ensure that everything goes off without a hitch.

Consider these six kinds of electrical testing to avoid potential problems:

  • Partial discharge testing: Partial discharges occur within the insulation of high or medium voltage electrical equipment. They are tiny electrical sparks and occur as a result of an air pocket breaking down within the insulation. Over time, they could erode the insulation and eventually, may lead to the failure of the insulation. Partial discharge testing can be part of an ongoing predictive maintenance program.
  • Insulation resistance testing: This test, sometimes known as the Megger, applies DC voltage to a particular spot within the insulation to test for resistance. The measure of the resistance can determine the condition of the insulation.
  • Contact resistance: Also referred to as the Ductor Test. The contact resistance test checks the resistance of electrical connections, including the connectors, joints, and terminations. It is one way to detect specific problems, such as eroded contact surfaces, loose connections, and corroded contacts.
  • Primary injection testing: This type of testing is typically associated with high-voltage power distribution systems. It injects a test current into the primary side of the system to see how it behaves with that level of current. Secondary injection testing may also be of value. However, it applies the test current to the trip relay directly on the secondary side.
  • Power factor: This test is typically performed on large transformers. It ensures the integrity of the insulation is still intact.

Gas sampling: Sometimes referred to as dissolved gas analysis, it looks at the gases in transformer oil. Testing the oil in this manner determines the level of equipment breakdown since insulating materials liberate gases as they break down.

Along with running these tests as part of a routine preventative maintenance program, there may be some other factors to consider as well. By testing the equipment regularly and doing any repairs that are necessary before they become a major problem, it can help to save your business money and prevent costly and inconvenient downtime.

- David Manney is a marketing administrator at L&S Electric. This article originally appeared on L&S Electric Watts New BlogL&S Electric Inc. is a CFE Media content partner.



No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2015 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
2016 Product of the Year; Diagnose bearing failures; Asset performance management; Testing dust collector performance measures
Safety for 18 years, warehouse maintenance tips, Ethernet and the IIoT, GAMS 2016 recap
2016 Engineering Leaders Under 40; Future vision: Where is manufacturing headed?; Electrical distribution, redefined
SCADA at the junction, Managing risk through maintenance, Moving at the speed of data
Safety at every angle, Big Data's impact on operations, bridging the skills gap
The digital oilfield: Utilizing Big Data can yield big savings; Virtualization a real solution; Tracking SIS performance
Applying network redundancy; Overcoming loop tuning challenges; PID control and networks
Driving motor efficiency; Preventing arc flash in mission critical facilities; Integrating alternative power and existing electrical systems
Package boilers; Natural gas infrared heating; Thermal treasure; Standby generation; Natural gas supports green efforts

Annual Salary Survey

Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.

There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.

But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.

Read more: 2015 Salary Survey

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.
This article collection contains several articles on the vital role of plant safety and offers advice on best practices.
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.
This article collection contains several articles on strategic maintenance and understanding all the parts of your plant.
click me