XRN2

Productomschrijving

The XRN2 is a universal mains decoupling device and covers the protection requirements from VDEW and most other utilities for the mains parallel operation of power stations.

• Over/ and undervoltage protection
• Over/ and underfrequency protection
• Extremely fast decoupling of generator in case of mains failure (XRN2-1) or
• Rate of change of frequency df/dt (XRN2-2)

Because of combination of three protectional functions in one device the XRN2 is a very compact mains de-coupling device. Compared to the standardly used single devices it has a very good price/performance ratio.

Features
• Microprocessor technology with watchdog
• Effective analog low pass filter for suppressing harmonics when measuring frequency and vector surge
• Digital filtering of the measured values by using discrete Fourier analysis to suppress higher harmonics and d.c. components induced by faults or system operations
• Integrated functions for voltage, frequency and vector surge in one device as well as single voltage, frequency and vector surge devices.
• Voltage supervision each with two step under-/ and overvoltage detection
• Frequency supervision with three step under-/ or overfrequency (user setting)
• Completely independent time settings for voltage and frequency supervision
• Adjustable voltage threshold value for blocking frequency and vector surge measuring.
• Display of all measuring values and setting parameters for normal operation as well as tripping via a alphanumerical display and LEDs
• Storage and indication of the tripping values
• In compliance with VDE 0435, part 303 and IEC 255
• For blocking the individual functions by the external blocking input, parameters can be set according to requirement
• User configurable vector surge measurement 1-of-3 or 3-of-3.
• Reliable vector surge measuring by exact calculation algorithm