Issue 2/2015

currentCustomer Magazine of E-T-A Elektrotechnische Apparate GmbH

A floating system The perfect solution for many applications: hydraulic-magnetic circuit breakers

The single-source- Four winners A floating system A winning team system New smart solid state relays A well-proven principle: Successful in the Far East E-T-A as a solution hydraulic-magnetic circuit provider breakers

3 4-5 6-7 14 2 CONTENTS ©Michael Stifter/Fotolia.com ©haveseen/Fotolia.com ©fotek/Fotolia.com

Four winners A floating system Culinary delights 4-5 New smart solid state relays 6-7 A well-proven principle: 15 Typical Chinese: Sweet and hydraulic-magnetic circuit sour pork breakers

Contents

3 Editorial 10 FAQ The single-source-system Frequently Asked Questions

4-5 Four winners 11 Good Practice New smart solid state relays Perfectly matched

6-7 A floating system 12-13 E-T-A solutions A well-proven principle: for many products hydraulic-magnetic circuit breakers 14 A winning team Successful in the Far East 8 Interview Space-saving combination: 15 Culinary delights IEC appliance inlet with ON/OFF Typical Chinese: switch and overcurrent protection Double fried sweet and sour pork

9 Personnel

Impressum

Customer Magazine of E-T-A Layout: Elektrotechnische Apparate GmbH E-T-A Communication Department Editor: E-T-A Elektrotechnische Apparate GmbH Photos: Industriestraße 2-8 · 90518 ALTDORF E-T-A, Titel: ©haveseen/Fotolia.com, Qoros Phone: +49 9187 10-0 · Fax +49 9187 10-397 E-Mail: [email protected] · www.e-t-a.de Circulation: 20,000 copies Responsible: Thomas Weimann EDITORIAL 3

The single-source-system

DC 24 V protection components are only helpful if they are perfectly matched. Our globalised world is getting significantly more complex. You may have noticed this trend in your professional environment. There are great approaches how to handle this complexity. Therefore, we feel it is our job as a solution provider and supplier of ideas to relieve our customers of any additional tasks. Thus allowing them to concentrate on their core business areas and use their resources efficiently.

For instance in automation technology: E-T-A has been a constant in 24 V DC systems for many years thanks to our electronic circuit protectors. We gradually extended and enhanced our portfolio to best support our customers in this industry. Today, we do not only offer individual components of the 24 V DC system, but we give you the whole picture.

It includes primary AC protection, power supplies and secondary DC protection. The motto is: MCB + switch mode power supply + power distribution system + electronic circuit breaker = balanced overall system

This equation is the pinnacle of almost any automation solution and ensures trouble-free operation of production and plants. The ControlPlex® Intelligent bus-capable power Dr. Clifford Sell distribution systems are our latest addition to this product line. They simplify monitoring Executive Committee of the control voltage level for condition-based maintenance and power management. Are E-T-A Elektrotechnische Apparate GmbH you working on a project that requires our support? Talk to us! We look forward to speaking with you.

This equation is the heart of nearly every

automation solution and ensures trouble-free MCBs operation of production and plants. + switch-mode power supply + power distribution system + electronic circuit breaker

= a harmonious integrated system ©kir_prime/Fotolia.com 4 PRODUCTS

Four new smart solid state relays in ISO Micro automotive enclosure Four winners

New solid state relays make the most of their unique advantages in vehicles.

The ISO relay models ● Silent operation, allows installation For small and medium current ratings in locations and with loads where the up to approximately 40 A, a relay design switching noise is undesired. in accordance with ISO 7588 is most ● Unsusceptible against dust, shock commonly used in vehicles. It is known as and vibration. an ISO Micro or ISO Mini design. ● Energy efficiency: the control power needed is only a fraction of what is For higher ratings the Mini version is needed by an EMR. We increased it fitted with longer terminals (9.5 mm for the ESR10 Micro from a few μA to instead of 6.3 mm) for supply and load. 10 mA so the diagnosis of standard Type ESR10 Maxi 50 A is a solid state control units does not signal a wire relay with these terminals. break.

Strengths of solid state relays The above mentioned benefits are so Compared to electro-mechanical relays valuable for many applications that (EMR), solid state relays have some even a higher cost compared to an convincing advantages: electro-mechanical device will quickly ● Long life span, even with critical be amortised. (inductive) loads. Non-identical quadruplets - each of them a ● Frequency-controllability, which The E-T-A Micro solid state relays specialist for its application (12 V, 24 V, 10 A, ...) makes them suitable for dimming or Besides the standard versions for 12 V power control of loads via pulse- electrical systems, we also offer two OEM width-modulation. versions. The first version was designed PRODUCTS 5

for the Volkswagen Group in accordance At a glance – with VW specifications and was tested to Micro automotive solid state relays VW standards. The second version meets all the requirements of General Motors. ● Different ISO automotive relay Both OEM relays were released by the designs corresponding company at the end of Mini 4-pin Mini 7-pin 2014. ● Solid state relays offer many advantages compared to The latest product in the E-T-A Micro electro-mechanical relays relay family is a version for 24 V on-board electrical systems for use in utility ● Micro solid state relay versions vehicles. These products are suitable for 12 V and now also for for harsh environmental conditions. In 24 V on-board electrical systems addition, a long life span is important with Micro 4-pin "Maxi" commercial vehicles. Trucks, buses or working machinery are often used for 20 to 30 years. A defective relay then quickly cause a standstill and financial loss.

More information? Just scan the QR code! ©Michael Stifter/Fotolia.com 6 COVER STORY

The perfect solution for many applications: hydraulic-magnetic circuit breakers A floating system

Protection entirely independent from the ambient temperature. Protection without derating. Protection specifically tailored to the application. Hydraulic-magnetic circuit breakers are the perfect solution for all these requirements.

Some things sound more complicated The major benefit of a hydraulic delay is than they are. »Hydraulic-magnetic circuit that it makes circuit breakers tolerant to breakers« hold a coil which serves as a the ambient temperature. This must be current sensor. The iron core of the coil taken into account when using thermal is moveable within a small oil-filled tube. circuit breakers with a bimetal, where When a higher current flow than intended ambient temperature and mutual warming occurs, the magnetic field will pull the of neighbouring units (side-by-side iron core into the tube. Depending on the mounting) can influence trip characteristics. type of oil, this movement can variably be A higher current rating than originally delayed. If the iron core moves completely required must be used. This is not into the coil, the strength of the magnetic necessary with hydraulic-magnetic field is sufficient enough to trip the actuator. devices. The properties of the silicon oil used nearly stay the same within the E-T-A has a full range of products based entire temperature range (-40 °C ... +85 °C). on this well-proven principle. It includes the The trip curve does not change. Derating 8340 (max. current rating 50 A) and 8345 is not an issue at all. E-T-A has (max. current rating 125 A) product groups. continuously enhanced this product These products were originally used in group. This allows us to offer a great the telecommunications industry (e.g. variety of options. mobile radio base stations). Meanwhile, they also sell into other applications such as data centers, special vehicles, power distribution systems, yachts and unmanned submarines. COVER STORY 7 ©haveseen/Fotolia.com

At a glance - features and benefits of hydraulic-magnetic circuit breakers

● Wide temperature range -40 °C ...85 °C ● Ambient temperature does These include: not affect the trip curve ● 65 different current ratings ● Ambient temperature does not (0.016 A…125 A) influence the possible current ● 24 standard trip curves rating ● 9 different terminal designs ● Wide current rating range ● various optional add-on modules: (0.016 A...125 A) - remote ON/OFF actuation of ● High rupture capacity up to three devices at a time Hydraulic-magnetic circuit breaker type 8340 (10,000 A at 80 Vdc) - remote trip module for remote ● A wealth of disconnection with auxiliary contacts combinations - auxiliary contacts ● Add-on modules allow additional functionality (auxiliary contacts, What benefits are offered by this trip coil, remote actuation) product range? We can offer you a tailor-made solution for your application. In addition, we can also supply small batches with superior quality.

More information? Just scan the QR code! Hydraulic-magnetic circuit breaker type 8345 8 INTERVIEW

Thomas Schmid Product Manager at E-T-A ©kado_09/Fotolia.com

IEC appliance inlet with ON/OFF switch and overcurrent protection Space-saving combination

IEC appliance inlet, rocker-actuated switch and protective element - all in one. The reduction of components makes the appliance inlet modules so attractive. This helps reduce the space requirements, mounting and wiring time, planning and storage costs. E-T-A offers appliance inlet modules with resettable overcurrent protection. Product Manager Thomas Schmid explains why. Appliance Inlet Module X3130

Current: What was the reason to launch Thomas Schmid: As a space-saving Current: Do you use single pole or double appliance inlet modules with resettable solution, we integrate the resettable circuit pole circuit breakers? overcurrent protection? breaker into the ON/OFF switch. In the event of an overcurrent trip, the rocker- Thomas Schmid: Both versions feature Thomas Schmid: Availability and reliability actuator will automatically snap into the double pole DPST switches. The customer are two of the major requirements OFF position. In addition, the circuit breaker can decide whether he wants to have single concerning high-end machinery and can also be fitted with an undervoltage pole or double pole protection, i.e. whether appliances today. Downtimes are no longer release module. Automatic re-starts of both chambers should be fitted with a tolerated anywhere. Therefore, more and machinery after a power loss and their bimetal or only one. The rocker actuator can more customers require a combination related safety risks can thus be eliminated. also be supplied with illumination and in a element with an integral circuit breaker range of colours. instead of blade fuses. The advantage: Current: What IEC connectors do you After tripping due to an overcurrent, the offer? Current: Thank you for your time. circuit breaker can be reset with the touch of a button. Time-consuming replacement Thomas Schmid: We offer two versions of of the blown fuses - strictly speaking a appliance inlet modules. The X3120 has a repair - is no longer required. C20 appliance inlet and the X3130 has a C14 appliance inlet to IEC standard 60320. Current: If we look at the new appliance Both appliance inlets are fit for international inlet modules, we only see an IEC appliance use, so they cannot only be used in Europe, inlet and an ON/OFF switch. Where is the but also in Japan and the USA. circuit breaker? PERSONNEL Ricardo Pimenta In April, Ricardo Pimenta took over the Product Manager role for electrical power relays (EPR), hydraulic-magnetic circuit breakers and the HVDC relay. In his new " People are role, Ricardo, who is a graduate engineer at the very and has a wealth of experience as a product designer at E-T-A, will support center of our customers and users in the best possible daily work" way. He will do this directly, but also with the help of E-T-A's global sales network. He will also focus on identifying new Therefore we are excited to trends in this segment and to specify new introduce new colleagues, customer-oriented products. new jobs, new contact people at E-T-A on this page.

Ralf Dietrich Ralf Dietrich is the new Head of Product and Market Development at E-T-A. He is an Electrical Engineer and worked many years in the Automation industry, where he was in a leading role, responsible for sales, product marketing and product design. He also worked in the United States for several years so he is well acquainted with the international aspects of his role.

His goal for E-T-A is to push and promote ©kalim/Fotolia.com the design and marketing of new product, tailored to our target groups. This will support the overall E-T-A goal to continue offering customised solutions and products to our target markets all over the world. 10 FAQ – FREQUENTLY ASKED QUESTIONS

Actuation modes of circuit breakers - what possibilities are there? Where is the "ON button"?

This question cannot easily be answered all the time and is absolutely reasonable with regard to circuit breakers. According to DIN EN 609341 the correct term is »actuation«. We distinguish between switching actuation (open and close an electrical connection) and mechanical actuation (manual action of an operating person).

1DIN EN 60934 VDE 0642:2013-11 Circuit breakers for equipment protection (CBE)

What is an R-type circuit breaker? and will also reset automatically after a This type automatically interrupts the short period of time. If the failure is not circuit in the event of a failure, but has to corrected, the circuit breaker will cycle, be reset manually after tripping. i.e. it will open and close cyclically. ● Examples of the E-T-A range: 104, ● Examples of the E-T-A range: 1140, 1610-21, 1620-3, 1626-3, 1658 1610-92, 1620-1, 1626-1

What is an M-type circuit breaker? This version with so-called modified This type corresponds to the R-type. In reset prevents automatic closing of addition it offers the option to switch it contacts until the supply voltage is off manually if required. It is not suitable interrupted. ©aureman/Fotolia.com for regular switching operations under ● Examples of the E-T-A range: 1160, normal load conditions. 1620-2, 1626-2 Our FAQ pages are meant to discuss ● Examples of the E-T-A range: topical subjects from practice to support 1610-H2, 1620-3H, 1626-3H, 1170 How else can a circuit breaker be you in your daily work. Do you have any actuated? questions you need answer to? Send it What is an S-type circuit breaker? A circuit breaker can be actuated via to us - we are looking forward to hearing This circuit breaker corresponds to an electrical signal (directly or via bus from you. the R-type and is suitable for regular connection) or even remotely controlled. E-Mail: [email protected] switching operations under normal load Such models have status outputs to conditions. signal the condition of the contact ● Examples of the E-T-A range: 1180, opening to the control room. Operation is 2210, 2216, 3120, 3130, 3131, 3140, accomplished with switches, momentary 483, 4120, 4220, 8340, 8345, ESS20, switches or touch displays. ESS31-T ● Examples of the E-T-A range: 4930, X8345-R, ESXxxx, REF16-S, What is a J-type circuit breaker? PowerPlex®, ControlPlex® This type will automatically interrupt the circuit in the event of a failure

R-Type (1658) M-Type (1170) S-Type (3120) J-Type (1620-1,2) PowerPlex® Remote App GOOD PRACTICE 11

How to rate current ratings of protective elements in telecommunication equipment Perfectly matched

The drastically increased power consumption of modern communication technology has led to totally new requirements regarding the protective elements. Engineers must precisely match the protective element with the requirements of the application.

Dipl. Ing. Burkhard Wagner, Key Account Manager Deutsche Telekom at E-T-A

The latest generation of E-T-A's 8345 circuit breaker can protect up to 125 A per individual load. In connection with the Power-D-Box® power distribution systems it is possible to protect the distribution of more than 30 kW in a system rack. Even in operation the load outputs can be added or retrofitted.

The special trip curve of the 8345 and its tolerance to ambient temperature in a range of -40 °C to +85 °C enables the use of the 8345 in non-air-conditioned rooms or in outdoor applications. The requirements for precise operation is the careful selection of the current rating. The following applies: The closer the current rating value of the circuit breaker is to the ©shock/Fotolia.com actual operating current of the device, the Modern communication technology requires tailor-made protection. higher the operational reliability.

The following aspects must be taken into account when planning: - even with very low overcurrents. Here we the power supply module or of the max. 1. The required operating current must have a significant edge over other devices, operating current. be carried even at the lowest tolerance e.g. with thermal protective elements, with limit of the supply voltage. regard to safety. Do you have any questions? We look 2. For redundantly supplied devices, the forward to speaking with you! power (current) must only be ensured Redundant operation, operation of via one feed. less populated systems (lower current 3. For devices with several power supply consumption) or higher operating voltage modules and one voltage source, (full battery) often require a multiple of the it is reasonable to provide an n+1 actual operating current to reach the range redundancy of the power supplies. of the circuit breaker's trip current. On the "flat" trip curve of the circuit breaker The characteristic curve of the 8340 described offers maximum reliability. and 8345 circuit breakers tolerates inrush current peaks through capacitive With this in mind, it is not recommended loads (e.g. power supply modules). to follow the recommendations of the Subsequently, the circuit breaker is manufacturer regarding current rating ready to respond in accordance with the values. Real safety can only be ensured selected current rating. Disconnection by adjusting the rating to the actual power will typically occur within a few seconds consumption, i.e. the specific value of 12 APPLICATIONS

E-T-A type used: Power distribution system 19BGT-S579 Monitoring in a E-T-A solutions nuclear power plant for many products AREVA is the world market leader in power plant technology. They offer their customers E-T-A offers tailor-made a comprehensive spectrum of business activities. This includes the entire fuel cycle, the developments for all design, planning and construction of nuclear reactors as well as all related services. industries and products.

Here are some The primary circuit of a nuclear power The appropriate current supply is provided interesting examples. plant, i.e. the reactor with its cooling and by three different power distribution systems. safety systems, is monitored carefully. Selective protection of the individual loads For this purpose, monitoring systems are is ensured by the E-T-A's 2210 thermal- used which detect ageing processes of magnetic circuit breaker for AC supply and components via suitable sensors. This by the ESS20 electronic circuit breaker for fatigue control, the recording of vibrations 24 V DC. These devices communicate all or the detection of solid-borne sounds internal functions via signal contacts to the of loose parts allow early and preventive corresponding control system. service.

E-T-A type used: Power distribution system 19BGT-S579 ©Turbowerner/Fotolia.com APPLICATIONS 13

E-T-A type used: Power distribution system 19BGT-S606 Don't give sprayers a chance

High Soft Tech GmbH (HST) in Hamburg is one of the major providers of language and data communication and supplies an audio monitoring system, among other to the Deutsche Bahn.

Several microphones help monitor large Thus the system is able to distinguish areas of storage tracks for trains or suburban between sounds made by railway railway systems. This surveillance system employees or movements on permitted allows detection of unauthorised intruders ways from unauthorised ones. The power such as graffiti sprayers or vandals and supply for the microphones, which are to generate alarm signals with the police. distributed over a distance of up to 1,000 m, High performance computers compare is protected by a 30-way Power-D-Box® the recorded sounds of these power distribution system. These are intruders with determined equipped with ESX10 electronic circuit reference samples. In the protectors. This specific system design event of deviations an alarm is eliminates unreliable tripping due to long generated. cable lengths - a common issue with standard circuit breakers.

Audio monitoring system made by High Soft Tech GmbH E-T-A type used: Power distribution system 19BGT-S606 ©Marco2811/Fotolia.com 14 INTERNATIONAL

Successful in the Far East A winning team

Chinese-manufactured car meets European quality requirements with E-T-A's 1616 automotive circuit breaker

E-T-A Automotive Circuit Breaker Type 1616 ©Qoros

Qoros 3 Hatch

They wanted to be on the safe side: The hatchback version of the Qoros 3 also of their cars. The international brand name E-T-A's 1616 automotive circuit breaker uses the 1616 to protect the windshield made a splash: A hatchback model, the will be installed in the upcoming models wiper motor. Qoros again chose E-T-A for Qoros 3 Hatch, was presented in March of the Chinese car manufacturer Qoros. its reliable protection because our circuit 2014 at the Autosalon in Geneva and This is a Chinese manufacturer seeking breakers automatically reset after remedy was launched in China in June 2014. In high quality. In September 2013, the of the failure. December, the Qoros 3 City SUV 1.6T was Qoros 3 Sedan was the first Chinese car also launched. to achieve a 5-star rating in the crash Qoros was founded in 2007 as a Joint test carried out by Euro-NCAP (New Car Venture between the Israeli conglomerate Assessment Programme). Since then, the Israel Corporation and the Chinese car Qoros 3 Sedan has been considered the manufacturer Chery Automobile and was safest Chinese car in terms of European then called Chery Quantum Automotive safety requirements. Corp. The name was changed in November 2011 to Qoros Auto Co. Ltd. Qoros has To support the precision and reliability offices in Shanghai and a new factory in of the vehicle a 1616-92-20A automotive Changshu in the Eastern Chinese province circuit breaker is installed in each vehicle Jiangsu, with capacity for 150,000 cars per to protect the windscreen wiper motor. year. Qoros values the quality of E-T-A's products when it comes to protecting For the domestic market, the cars of their application against overcurrent. In Qoros are sold under the brand name addition, E-T-A's circuit breaker offers an Guan Zhi, which literally translates to autoreset function after a possible failure learning and perfection. For the export which represents a competitive edge over business the brand name Qoros was standard blade fuses. The end customer selected which stems from the Greek does not have to take his car to the expression khoros and means choir. It is garage, but can continue driving. intended to symbolise the international character of the company and the quality CULINARY DELIGHTS

Directions browned, drain on paper towels and then Cut meat into bite-sized cubes, put into put on a hot plate. Re-heat the sweet and a bowl and salt slightly. Drizzle soy sauce sour sauce and stir in the remaining tbsp Typical Chinese: over the meat and allow to stand for 30 - of oil so that it does not become gluey. 60 minutes. Add egg and stir well. Roll the Drizzle over the meat and serve while hot. cubes individually in cornstarch so that Serve with Chinese rice. " Double fried they are covered well on all sides. Heat oil sweet and sour in a wok and deep-fry meat cubes for one pork" minute (in two steps if required). Drain on Ingredients for 2 - 3 servings: paper towels. This part of the preparation - 500 g lean pork Although the reputation can be done in advance. - 1 pinch of salt - 1 tsp light soy sauce of this dish is a bit Dissolve potato starch in water, add - 1/2 egg (slightly whipped) battered and is considered pineapple juice, vinegar, sugar, salt, - 3 tbsp corn starch nearly synonymous with soy sauce, ketchup and Worcestershire (alternatively potato starch) bad Chinese food, it can sauce and stir well. Heat 1 1/2 tbsp oil in - veg-oil for deep-frying be one of tastiest dishes frying pan, sauté onions and garlic, then - 2 1/2 tbsp corn oil of the Chinese cuisine add paprika. Fry at medium heat for two - 1 garlic clove finely chopped minutes while stirring. Fold in pineapple - 1 onion, chopped if it is prepared correctly. chunks and pour the sauce over the - 1 green pepper top. Bring slowly to boil while stirring cut into stripes or pieces continuously. - 100 g canned pineapple cubes with some juice Heat up oil in the wok again and deep-fry the meat cubes a second time. After For the sauce 2 - 3 minutes, when the meat is evenly - 2 tsp potato starch - 4 tbsp water - 4 tbsp pineapple juice - 3 tbsp vinegar - 4 tbsp sugar - 1 pinch of salt - 2 tsp light soy sauce - 2 tbsp ketchup - 1 1/2 tsp Worcestershire sauce ©Eva Gruendemann/Fotolia.com