Electrical Power & Protection


Current and voltage sensing contactors

July 2017 Electrical Power & Protection

Gigavac has released a new range of current and voltage sensing contactors. These can help reduce the number of components in monitoring and control systems by integrating the sensing controls within the actual contactors. The range includes:

• 350 A and 600 A contactors with over-current sensing and automatic trip function. Trip current is settable via an external programming resistor.

• 350 A and 600 A contactors with current sensing outputs. Current is proportional to voltage output of 0-5 or 0-10 V.

• 350 A and 600 A contactors with low voltage disconnect and auto-disconnect function, optimised for vehicles with dual battery 12 V/24 V systems.

The Gigavac Epic extended performance impervious ceramic (EPIC) sealed AC/DC contactors can be used in harsh environments, under water and at temperatures from -55 to 85°C, and can be mounted in any position. Also called a relay or solenoid, they are the preferred contactor for heavy trucks and equipment, buses, emergency vehicles, electric vehicles, hybrid vehicles, boats, light rail, mining, oil refineries, construction equipment, military vehicles, power management systems for battery charging, fuel cells, battery backup, solar, wind and wave power systems and factory automation where long life and high reliability are needed.





Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Measuring and analysing PV circuit performance
Comtest Electrical Power & Protection
Regardless of the test method, you must know the plane of array irradiance and cell temperature to evaluate PV circuit performance. Proper sensor types and test methods like the Fluke Solmetric PVA 15i-V curve tracer should be used for reliable results.

Read more...
Enabling Africa’s solar potential – lighting the way with technology
ABB South Africa Electrical Power & Protection
As the global population continues to grow, energy demand also rises. ABB can help bridge the gap throughout the renewable power value chain, including consulting, generation, storage, transmission, monitoring, control and optimisation.

Read more...
AES and the great decarbonisation debate
Electrical Power & Protection
Although many manufacturing and industrial companies have objectives to reduce the use of fossil fuels, there are not yet any silver bullets in the green fuel space. Supply and logistics constraints, high costs and technological limitations are just some of the challenges encountered by AES, as they assist an increasing number of clients to investigate the use of more environmentally sustainable, lower carbon fuel alternatives, thereby obviating the requirement to pay

Read more...
Distributed servo drive system with extended voltage range and additional braking option
Beckhoff Automation Electrical Power & Protection
Beckhoff’s AMP8620 supply module and AMP8805 distribution module are now also available with an extended voltage range for the AMP8000 distributed servo drive system.

Read more...
Data acquisition modules
Vepac Electronics Electrical Power & Protection
The D1200 current input modules from Vepac include one discrete digital input and two open-collector digital outputs for monitoring On/Off signals or controlling solid-state relays and annunciators. The digital outputs can also be programmed to operate as HI/LO alarm outputs based on the input current level.

Read more...
Grid management systems are the backbone of modern T&D networks
ACTOM Electrical Machines Electrical Power & Protection
Grid management systems are the linchpin of modern transmission and distribution networks, ensuring their reliable and efficient operation.

Read more...
Electrical power solutions from TRAFO
Electrical Power & Protection
Having rapidly carved a niche in dry-type transformer applications in Africa, Trafo Power Solutions has steadily grown its offerings, and now sees a future as a leading provider of electrical power solutions. ...

Read more...
Boiler update at food processing plant transforms production process
Electrical Power & Protection
The replacement of 78 year-old boilers at a Western Cape food processing plant by Associated Energy Services has not only proven to be a worthwhile investment for the client, but has transformed its entire production process.

Read more...
Three financing trends driving clean energy in the Global South
Schneider Electric South Africa Electrical Power & Protection
The Global South is at a critical juncture in its energy transition, grappling with challenges that demand immediate action. To finance its energy targets, the World Economic Forum’s Network to Mobilise Clean Energy Investment in emerging markets and developing economies has developed a playbook of over 100 financing mechanisms and de-risking tools that have successfully helped narrow the clean energy financing gap in emerging and developing economies.

Read more...
New generation low power frequency inverters
Bearing Man Group t/a BMG Electrical Power & Protection
New to BMG’s electromechanical range are energy-efficient Synergy PI150 series frequency inverters, which have been designed for efficient use in many applications.

Read more...