currentIssue 3/2019 Customer Magazine of E-T-A Elektrotechnische Apparate GmbH Reliably switching high currents Solid State Smart Power Relay SPR10-T for DC 12 V and DC 24 V applications We are overcurrent Voltage on the rise Reliable short circuit Reliable protection protection On the trail of a megatrend trip even with long E-T-A’s REX12D-T protects Why you should trust in many industries: 48 V cable lengths? plants and systems in the experts on such an Planning tool for ideal foodstuffs industry important subject protection in chemical plants 3 4-5 11 14 2 CONTENT © assetseller /stock.adobe.com © agsandrew/stock.adobe.com © Yingko/stock.adobe.com Voltage on the rise Switching High Currents Typically Dutch: 4-5 On the trail of a megatrend 6-7 SPR10-T Smart Power Relay 15 »Kale stew with smoked in many industries - 48 V for DC 12 V and DC 24 V meat sausage« applications Content 3 Editorial 10 FAQ We are overcurrent protection Frequently Asked Questions 4-5 Voltage on the rise 11 Good Practice On the trail of a megatrend Reliable short circuit trip even with in many industries - 48 V long cable lengths? Planning tool for optimal protection 6-7 Switching High Currents in plants of the chemical industry SPR10-T Smart Power Relay for DC 12 V and DC 24 V 12-13 E-T-A solutions applications for many products 8 Interview 14 Reliable protection Reliable pump protection E-T-A’s REX12D-T protects plants 3120 circuit breaker in barrel pumps and system in the foodstuffs industry made by Jessberger 15 Typically Dutch: 9 Personnel »Kale stew with smoked meat sausage« Impressum Current, Customer Magazine of E-T-A Responsible: Elektrotechnische Apparate GmbH Thomas Weimann Editor: Layout: E-T-A Elektrotechnische Apparate GmbH E-T-A Communication Department Industriestraße 2-8, 90518 Altdorf Phone: +49 9187 10-0 · Fax +49 9187 10-397 Photos: E-Mail: [email protected] . www.e-t-a.de E-T-A, cover: © agsandrew/stock.adobe.com EDITORIAL 3 We are overcurrent protection Why you should trust experts on such an important subject Overcurrent protection is a matter of trust – no matter what market you are in. Professional overcurrent protection does not allow for experiments. We are the world market leader in overcurrent protection and can offer you versatile service that is second-to-none. Our major goal is to tailor the protection precisely to your application. You can count on it: no matter what functional principle, design and configuration makes sense for your product, you will find it in our comprehensive portfolio. But this is only the beginning. We can fine-tune our overcurrent protection for individual components even more specifically to your requirements. At the same time, our product specialists can support you with their deep market knowledge and find individual and custom-built solutions together with you. This gives you the opportunity to completely concentrate on your product – always knowing in the back of your mind: E-T-A is overcurrent protection. What can we do for you and your products? Please get in touch. Or do you have a certain Dr. Jennifer Sell project you wish to discuss with us? We look forward to speaking with you. Director of E-T-A Elektrotechnische Apparate GmbH This is our equation to offer you customised solutions, tailored to your needs. A comprehensive portfolio + practice-oriented product versions + professional technical service = E-T-A ©kir_prime/Fotolia.com 4 PRODUCTS On the trail of a megatrend in many industries - 48 V Voltage on the rise E-T-A’s circuit breakers, relays, control units and systems are successful in a diverse group of industrial branches. Often products, solutions and knowhow used in industries such as utility vehicle production, aerospace or machine construction are also suitable for other markets. This approach allows E-T-A to offer increase brake disc temperature, but electronic power relay whose operating products for the 48 V megatrend not is stored in a DC 48 V battery. This voltage can also be increased from DC only for trucks and passenger cars, but energy source will then feed an electric 24 V to DC 48 V (160 A). also for machine and panel builders. motor that supports starting. The higher voltage also helps reduce weight, since In mechanical engineering and intralogi- A major reason for the DC 48 V design engineers can reduce the cable stics, modern drive systems such as DC megatrend in all types of vehicles is cross sections of the copper cables. motors, multiphase motors, servomotors the reduction of CO2 produced by road and completely new applications such as traffic. Even heavy trucks and buses E-T-A supports this trend with suitable autonomous, driverless goods transport will soon be subjected to stricter legal products. One of them is the 1170 and storage systems demand more regulations. Newly registered trucks thermal circuit breaker which is able power. Increasing the operating voltage must emit 15 % less CO2 from 2025 to protect DC 48 V loads. Unlike blade from DC 24 V to DC 48 V allows the use of on and in 2030 30 % less compared fuses, it can quickly be reset. The more powerful and compact loads without to 2019. In order to reach these goals, MPR10 mechanical power relay also having to increase the conductive cross the vehicles must become much more has an enhanced version that can switch sections in cables, terminals or loads. efficient. This is not possible with the DC 300 A at DC 48 V. If there are special The DC 48 V technology is specified 12 V or DC 24 V technology used today. applications where we cannot offer a in a way to ensure that the critical It significantly increases efficiency and suitable product yet, we will try to find limit of 60 V will not be exceeded, not correspondingly reduces CO2 emissions a solution through a design partnership. even under unfavourable circumstances. if braking energy is not simply used to We prepare concepts such as the EPR10 This is important, because otherwise © assetseller /stock.adobe.com PRODUCTS 5 significantly stricter requirements apply DC 24 V industrial components with It is such a cross-industry approach both for the operators and the equipment a powerful DC 48 V semi-conductor that allows E-T-A to go one step or vehicle. technology including an active, linear further. Go with us! current limitation. The precise detection The ESX10-T electronic circuit of short circuit and overload increases protector is ideal for these applications. transparency, reduces trouble-shooting It unites well-proven rail mounting for and boosts productivity. 48 Volt 1170 ESX10 MPR10 EPR10 © industrieblick/Fotolia.com © Kurmyshov /Fotolia.com 6 COVERSTORY SPR10-T Smart Power Relay for DC 12 V and DC 24 V applications Switching High Currents In many automation applications, car production, utility vehicles and in the steel industry, powerful loads do not only have to be switched on and off quickly, they must also be protected. The new SPR10-T will switch powerful loads and protect them against overcurrents. Three functions in one unit physically isolating of the load circuit. Thus, High performance in a restricted The SPR10-T extends E-T-A’s solid state all loads are reliably protected even in the installation space remote power controller product portfolio event of extreme overcurrents. The trip is SPR10-T has current ratings of 20A and and is appropriate for for DC 12 V and DC indicated directly on the device as well as 25A making it the ideal solution for 24 V applications. Unlike conventional via a status output. In multi-channel powerful loads with high current demands relays, the SPR10-T provides overcurrent applications, the signal can either be in the DC 12 V and DC 24 V applications. protection as an integral feature. In the evaluated as a single signal or also as a Despite its slim profile, of only 12.5 mm event of an overload or short circuit, the group signal. width, it accommodates cable cross electronic overcurrent protection sections up to 10 mm² both for power intervenes and reliably disconnects the Afterwards, the SPR10-T can be reset via input (UB), load output (L+) and load faulty path at more than 1.3 times rated the control input - control voltage between return (0V). Thanks to the integral power current within 30 ms. All other circuits 8.5 V and 32 V = load output connected, distribution and the available busbars, the remain unaffected, ensuring effective control voltage < 5 V = load output blocked. SPR10-T can be used as a miniaturised trouble-shooting and increasing machine ON delay is only 1.5 ms both with an power distribution system and as a fringe uptime and system availability. intentional ON or OFF operation and with a benefit, wiring efforts are reduced to a reset. As a result, applications requiring minimum. In addition, the SPR10-T has an in-built relay functionality will not only reduces the fuse which serves as a back-up solution additional components required for Direct rail mounting allows flexible and for the electronic overcurrent protection overcurrent protection, but also improve quick set-up that can be specified exactly function in a worst-case scenario by machine and system availability. to the customer’s application. This helps COVERSTORY 7 © agsandrew/stock.adobe.com save time and costs and at the same time The combination of these properties creates a clearly organised control cabinet. is, with a width of only 12.5 mm, an With a width of only 12.5 mm, this efficient and compact solution for your combination of properties makes the application.