Now with UL and CSA approval
LINETRAXX® VMD461 voltage relay and CD440 coupling device for higher nominal system voltages
(PresseBox) - To ensure electrical safety for man and machine, the operating states of electrical installations must be monitored continuously. Since electrical parameters such as voltage and frequency are not visible to the naked eye, this means that suitable measuring instruments need to be used.
Bender offers a wide range of different voltage and frequency monitoring devices. They range from single-phase voltage and frequency monitoring devices, through special solutions such as analogue voltage monitoring devices for nuclear power station applications to three-phase system and installation protection for decoupling in power generation systems. They all provide the necessary information advantage so that faults and malfunctions can be detected at an early stage and measures can be implemented before time-consuming, expensive interruptions to operation and installation damage occur.
The internationally valid and recognised ANSI codes1] for the measurement and monitoring functions are mapped in the VMD461.
The shutdown functions have a three-stage structure. In this way, it is for example possible to set up underfrequency/overfrequency monitoring and undervoltage/overvoltage monitoring with three threshold values each and a corresponding response delay.
In addition, the VMD461 can be used optionally for a wide variety of system configurations such as AC, 3AC, 3NAC and DC.
In addition, the VMD461 is also equipped with an RS-485 interface, which means that it can be updated. At the same time, current measured values can be called up from anywhere in the world for remote parameter setting with the aid of the Bender gateway technology COMTRAXX
Conclusion
In conjunction with the CD440 coupling device, the voltage relay VMD461 combines reliable operation with high flexibility and simple configuration for high nominal system voltages.
1] ANSI codes: Functional description translated into a numerical code
(Source: ANSI /IEEE Standard C37.2 Standard for Electrical Power System Device Function Numbers, Acronyms, and Contact Designations)
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Datum: 04.03.2019 - 06:09 Uhr
Sprache: Deutsch
News-ID 1547313
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