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KRIWAN at AHR Expo 2017 Vigilant protection against power grid problems KRIWAN presents new solutions for current and phase monitoring Increased current consumption, incorrect phase sequences, differing supply voltage – the causes of malfunctions and resulting damage in electrical systems are often down to these factors. KRIWAN is presenting new solutions that facilitate effective current and phase monitoring, and provide all electrically driven components with reliable protection against network problems in compact units such as chillers, condensing units, and refrigeration racks. In many applications, such as HVAC/R, as well as process technology, the systems used are pre-mounted on a frame or panel. The advantages of this are standardized manufacture in a factory, easier transportation of complete units to the point of use, and faster commissioning. These systems are connected to the same supply voltage as the compressors, pumps, valves, and heat exchangers that they use. In order to protect against damage caused by problems with the supply network, KRIWAN has developed a simple, compact, and extremely reliable plug-and-play solution for the entire system. Phase and current under control The KRIWAN Voltage Monitor INT69 UY Diagnose is used in applications in which the monitored system may malfunction or be damaged as a result of excessive voltages or incorrect phase sequences. The voltage monitor checks whether the supply voltage is in the permitted voltage range and the correct phase sequence is present. If the maximum or minimum voltage thresholds are breached, or a phase error is detected, the INT69 UY switches off the system. The KRIWAN Motor Protector INT69 I2 Diagnose is used in applications in which the monitored system may malfunction or be damaged as a result of excessively high currents. The motor protection unit INT69 I2 Diagnose checks whether the current drawn by the motor is within the permitted limits. If an error is detected, it switches the system off. 1 Through an additional input, any PTC sensors used for temperature monitoring can be evaluated. When the nominal response temperature (NRT) is reached, the system is switched off immediately. The protection units are also equipped with an integrated nonvolatile and tamper-proof operating data and error memory in order to be able to document real usage conditions, including problems occurring with the supply network. Available images The following images are supplied as printable picture. 2 Image source: KRIWAN KRIWAN – INT69UY- A new solution for precise phase monitoring Available images The following images are supplied as printable picture. Image source: KRIWAN KRIWAN – INT69I2 + INT185 – A new solution for precise current monitoring 3 About KRIWAN Industrie-Elektronik GmbH & Kriwan Americas KRIWAN has specialized in protecting industrial machines and systems from overload and downtime for nearly 50 years. Today, KRIWAN is the world market leader in electronics and sensor technology for refrigerant compressors, temperature sensors for electrical motors, and industrial weather measuring technology. KRIWAN is a globally active company, with more than 200 employees in Forchtenberg as well as subsidiaries around the globe. Since 2007, Kriwan Americas has provided technical sales, service and support to companies throughout North and South America. Since KRIWAN's foundation in 1968, this independent, family-owned company has been a pioneer and innovation leader, continually developing new ideas and translating them into cost-efficient, tailor-made products and systems for its customers. KRIWAN has operated a testing facility in Forchtenberg since 1997, which can be used by companies from all over the world to test their products and new developments. Further information Kriwan Americas John Gordon General Manager 470 Windsor Park Dr. Dayton, OH 45459 Tel.: (937) 432-9249 E-mail: [email protected] www.kriwan.com 4