The grid decoupling relay UFR1002IP is the "big brother" of the UFR1001E and monitors voltage and frequency in three-phase and AC grids.

With a color LCD display (German/English) and joystick, it is even easier to operate than the UFR1001E. Measured values and settings are clearly displayed. The device can be programmed, updates installed and the alarm memory read out via the integrated IP interface. The real-time clock (with power reserve) simplifies the traceability of the alarms. Up to 1,200 V can be monitored in conjunction with the VG1200 coupling device. The device has a two-channel, single-fault-safe design and thus meets the requirements of VDE-AR-N 4105:2018-11. The function of the connected switch is monitored. If monitoring is activated, the device does not switch on again if a switch-off error is detected.

Limit values for different applications are preset. Where permitted, they can easily be changed. If the nominal voltage is changed, the device automatically adjusts the limit values. With the standby input, a remote shutdown can be implemented, e.g. with a ripple control receiver.

Monitoring of

• Under/over voltage 15-520V (with ZIEHL VG1200 coupling device up to 1,200 V)
• Under/over frequency 45-65 Hz
• Voltage quality (10-minute average)
• Vector shift 2-65°
• ROCOF, rate of change of frequency df/dt 0.100...5.000 Hz/s
• Zero voltage U0 (ANSI 59v0)
• passive anti islanding protection

Features:

• single-fault-proof, with monitoring of connected switch (can be switched off when using the integrated switch of PV and battery converters
• Programmable restart attempts in the event of a switch-on error in the connected switch
• Relay K3 with programmable functions, including life contact, delayed switch-on signal for switches or error messages
• Response time adjustable 0.05 … 300,0 s
• Switch-back time adjustable 0 … 6,000 s
• Preset according to VDE-AR-N 4105-2018-11 (Pr 1.02, Pr 1.08 + 1.09) and VDE-AR-N 4105-2011-08 (Pr 1.01)
• Preset according to VDE-AR-N 4110-2018-11 (Pr 1.11-1.14) and bdew guideline (Pr 1.03-1.06)
• automatic adjustment of the switching points when the nominal voltage is changed
• Alarm counter for 100 alarms (with trigger value, cause and date/time, time of restart)
• 3 programmable digital inputs
• Standby counter and timer with standby on/off date/time
• Test and simulation function with measurement of switch-off times
• Sealing option and code protection for settings
• Interface ethernet TCP/IP, values available via modbus TCP
• Simple commissioning and programming thanks to preset basic programs and transmission via IP interface
• Supply voltage AC/DC 24-270 V
• Housing for DIN-rail-mount, 105 mm wide, mounting height 66 mm
• Accessory: Installation frame ER6 for panel mount

Certificates applied for

• Certificate of conformity Grid- and Plant protection acc. to VDE-AR-N 4105 2018-11 "Plants for generation of own energy in low voltage grid"
• Certificate for component VDE-AR-N4110 and 4120
• More will follow