About

Since 1958, we’ve put our family name on every unit (well, most of our family name)

In 1958, Mr. C.F. von Herrmann launched The VON Corporation – the world’s most trusted name in underground cable fault locating and high voltage testing – with the world’s first truly one-person-portable, air-insulated, 100kV DC test set. Since then, the VON Corporation has worked to meet a wide variety of challenges faced by electric utilities and related companies. Family-owned and operated, the company proudly serves a worldwide customer base from its main office in Birmingham, Alabama, U.S.A.

We have always strived to provide the most reliable, easy-to-use, and accurate equipment possible for utility markets. We specialize in equipment for underground cable fault locating, high voltage testing, rubber protective goods testing, aerial device boom current monitoring and testing, and our temporary secondary power restoration units, which we offer under our Servisavors® line.

We began with the C Series of high voltage DC test equipment. Designed to be one-person portable, these air insulated testers were revolutionary for their time, and still are unique in the industry. The newness, ease of use, and innovation of the C Series technology set the bar for all future effort in our company. 

In the early 1970’s, the VON Corporation entered the cable fault location equipment market with the BI-.35. This 35kV combination hipot – thumper was for many years the only practical fault locator that could be easily carried by two people. Ease of use and innovation were the key characteristics of our product. In the middle 1990’s, the BI-.35 was joined by the XF Series of Arc Reflection Systems, which, because of their combination of easy operation and portability, are the most popular portable cable fault locators on the planet. 

In 2005, the VON Corporation re-entered the underground cable testing market with determination, offering up the XV line of VLF testers. VLF or Very Low Frequency testing is fast becoming the preferred method of cable testing for XLPE cables. The XV series will bring VON’s reputation for ease of use and innovation to this market. 

With the same spirit of down-to-earth practicality, innovation, and service, the VON Corporation has established itself as a leader in rubber goods testing, introducing a complete overhaul of its control system with microprocessor control of the entire process in 2006 – just one more example of the ongoing innovation VON engineers bring to market.

As you can see, the VON Corporation is hard at work staying ahead of the needs of our industry, and never taking for granted our reputation as “the world’s most trusted name in underground cable fault locating and high voltage testing.”

Main Office

1038 Lomb Avenue SW
Birmingham, AL 35211

(205) 788-2437

We have a few fans:
Wish all manufacturers responded the way Von does. They bend over backwards to get it done and keep the customer happy.
— Greg Manitoba, Linestar

A lot has changed over the years. And, we know you have choices as to where you purchase the equipment you need to do your job. The fact that you’re here on our site means that you’re at least considering VON. While you’re noodling over that, you might want to factor in the following:

That’s a family name on those units. It’s not some faceless brand from who knows where. It’s a family of engineers who stand proudly behind their products. Believe it or not, that makes a difference.

We’ve been doing this a while. Our engineers have been innovating and creating solutions for hard-working utility workers since our patriarch, C.F. von Herrmann, formed the company around the commercial launch of the first ever man-portable, 100 kV class DC high pot.

Lastly, and arguably most importantly, we take service to the extreme. Look at a VON unit. Most of them are made to be gotten into easily. No, it’s not sexy having a row of cap nuts holding a panel on a cabinet. But, when you need to make a minor repair in the field you’ll be glad it’s built that way. And, if you need to call us, you’ll be able to talk to somebody who knows what they’re talking about, not a wet-behind-the-ears phone answerer who doesn’t know a capacitor from a crimping tool.