Power Transmission and Distribution (SF6)

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WIKA, a leading supplier of SF6 gas handling equipment, pressure gauges and sensors

SF6 (sulfur hexafluoride) gas is the insulator of choice for a variety of applications. Its electrical and thermal properties make it ideal for use in gas-insulated switchgear, breakers, and gas-insulated lines found in the transmission and distribution (T&D) industry, as well as for radiological instruments, particle accelerators, and equipment for semiconductor production.

However, in order to properly operate a facility or power plant that uses SF6 gas, a variety of specialized equipment is needed. WIKA USA offers a complete portfolio of SF6 products, including:

  • SF6 gas pressure gauges
  • SF6 sensors
  • SF6 handlers

We also supply the necessary services throughout the SF6 gas lifecycle.

Our instruments for your SF6 gas plants

Over 1 million WIKA gas density monitoring instruments are in use worldwide. This high number attests to customers’ satisfaction with our products, which are manufactured and thoroughly tested to the 5-Sigma quality level. Our measuring instruments – SF6 gas sensors and SF6 pressure gauges – are hermetically sealed and temperature-compensated to ensure reliable measuring results, even under the harshest operating conditions.

The importance of monitoring SF6 gas leaks and emissions

Although SF6 is non-toxic, any escaped gas can displace oxygen in the air and lead to asphyxiation in closed spaces. It is also a potent greenhouse gas – 23,900 times more effective than carbon dioxide at trapping infrared radiation in the atmosphere.

In addition, plant safety depends on the purity of SF6 gas. Under normal conditions during an electrical discharge, the six fluorine atoms split from the sulfur atom to capture an electron; after quenching the arc, the molecule quickly recombines. However, any leaks means moisture will find its way into the equipment and contaminate the gas. This is a serious problem for two main reasons:

  1. Water molecules prevent SF6 from recombining fully after an electrical arc, which means there’s less and less of the insulating gas.
  2. Uncombined sulfur and fluorine molecules then bond with water’s oxygen molecules, resulting in harmful decomposition byproducts.

In order to detect even the smallest leaks and to warn of escaping gas, WIKA has designed a range of high-quality SF6 gas sensors, detectors, pressure gauges, and emission monitors. We offer a complete product line for gas analytics, including accessories. Self-sealing valves and permanently gas-tight connections ensure that no SF6 gas escapes, but rather remains safely in its designated containers.

Innovative SF6 gas handlers

The WIKA product portfolio also includes a range of processing equipment designed specifically for the T&D industry. The comprehensive solutions include:

  • GPU-2000, an all-in-one SF6 gas handler that fills, evacuates, cleans, and vents the gas.
  • GAD-2000, an innovative gas dehydration unit that removes humidity from SF6 without having to take any T&D machinery offline.

Contact WIKA USA at SF-sales@wika.com and tell us about your situation. We will then work with you to customize the right SF6 solution for your application – all from a single source.

Additional SF6 Services

Service operations can keep your power plant or manufacturing facility running more safely and efficiently. To optimize applications that use SF6, WIKA offers the following services:

WIKA’s certified experts in SF6 lifecycle management have extensive lab and field experience. They can guide you on the latest regulations and best practices, and update you on current trends and developments in SF6 gas handling. For additional flexibility, most services and product training can be conducted at either WIKA’s facilities or at your location. To find out more, email us at SF-sales@wika.com.

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Innovative SF6 solutions

Calibration services

Entrust the calibration and maintenance of your measuring instruments to a competent partner.