Siemens launches a new arc fault detection device (AFDD) designed for use with photovoltaic systems. The device from the 5SM6 product family detects hazardous arcing faults in the strings of a PV system, and responds with an immediate acoustic and visual alarm. Arcing faults occur in defective string insulation or faulty cables. The result is rapid overheating, which may cause smoldering fires. The AFDD can be combined with other protection and switching devices, e.g. a molded case circuit breaker (MCCB). The device combination will ensure an automatic disconnection of the relevant system part in case of an arcing fault. Siemens has previously been offering AFDDs for electric installations in buildings.
In order to prevent smoldering fires in PV systems, an AFDD permanently measures the intensity and duration of high-frequency noise associated with the voltage and current, as well as noise lapses. Any abnormalities are reported immediately.
The new device from the 5SM6 product family detects hazardous arcing faults in the strings of a PV system.
Once the cause for an arcing fault has been remedied, the AFDD can then be reset. The arcing fault LED will light up again immediately if the problem was not completely resolved or if other arcing faults are occurring. AFDDs can be surface-mounted or clipped onto a standard mounting rail.
The device is therefore easily integrated in new systems and can be retrofitted in existing systems.
Arcing faults are a particularly high risk in solar power systems: On the one hand, the installations are often subject to extreme environmental conditions, including pressure from snow loads or high winds, which can result in damage to the system.
On the other hand, a solar system represents an increased risk for rescue workers in case of fire when attempting to extinguish the fire with water, if no appropriate disconnecting device is installed with the result that the systems are still supplied with voltage.
For further information on Division Energy Management, please see www.siemens.com/energy-management
For further information on AFDD, please see www.siemens.com/afdd
Siemens AG (Berlin and Munich) is a global technology powerhouse that has stood for engineering excellence, innovation, quality, reliability and internationality for more than 165 years. The company is active in more than 200 countries, focusing on the areas of electrification, automation and digitalization. One of the world's largest producers of energy-efficient, resource-saving technologies, Siemens is No. 1 in offshore wind turbine construction, a leading supplier of combined cycle turbines for power generation, a major provider of power transmission solutions and a pioneer in infrastructure solutions as well as automation, drive and software solutions for industry. The company is also a leading provider of medical imaging equipment – such as computed tomography and magnetic resonance imaging systems – and a leader in laboratory diagnostics as well as clinical IT. In fiscal 2014, which ended on September 30, 2014, Siemens generated revenue from continuing operations of €71.9 billion and net income of €5.5 billion. At the end of September 2014, the company had around 343,000 employees worldwide on a continuing basis.
Further information is available on the Internet at www.siemens.com
Reference Number: PR2015040178EMEN
Mr. Heiko Jahr
Energy Management Division
Tel: +49 (9131) 7295-75
Heiko Jahr | Siemens Energy Management
Further reports about: > Energy > PV systems > computed tomography > environmental conditions > high winds > laboratory diagnostics > magnetic resonance > magnetic resonance imaging > medical imaging > offshore wind turbine > power generation > power systems > solar power systems > solar system > voltage > wind turbine
Fraunhofer ISE Supports Market Development of Solar Thermal Power Plants in the MENA Region
21.02.2018 | Fraunhofer-Institut für Solare Energiesysteme ISE
New tech for commercial Lithium-ion batteries finds they can be charged 5 times fast
20.02.2018 | University of Warwick
A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.
In order to observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very...
A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.
By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
23.02.2018 | Physics and Astronomy
23.02.2018 | Health and Medicine
23.02.2018 | Physics and Astronomy