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VMD460


LINETRAXX® VMD460-NA
Network and system protection (NS protection) for monitoring
the network feed-in from generating plants

 

BENDER three phase AC under/over voltage relay VMD460

Product description:

The VMD460-NA is intended for protecting the network and the (generating) plant from inadmissible operating states and disconnecting them. For this purpose, the VMD460-NA is designed according to the single-fault tolerance principles.
If the switch-on conditions or (re-)connection conditions are fulfilled, the VMD460-NA enables the coupling of the generating plant to the network.
Details are regulated by the applicable (application) standards and guidelines. The country-specific (application) standards and guidelines are stored in the device as selectable basic programs.


Device features:

• Straightforward commissioning by means of default basic programs for national 
standards and guidelines
• Single-fault tolerance
• Monitoring of the connected coupling switches (configurable: NC/NO/off)
• Islanding detection df/dt (ROCOF)
• Vector shift
• RS-485 interface, BMS bus (data exchange/ parameter setting)
• Test function to determine the switch-off time
• Test button for the trigger circuit
• The last 300 network faults can be recalled with time stamp/real-time clock
• Continuous monitoring of the phase voltage and line-to-line voltage
• Special connection conditions after a limit value violation
• Language selection (German, English, Italian)
• Backlit graphic LC display
• Password protection for device setting
• Remote trip/remote switch-off via ripple control signal receiver
• Sealable enclosure

Application:

• Central NS protection (VDE-AR-N 4105)
• Protective disconnection (VDE-AR-N 4110, BDEW)
• Interface Protection (IP) (Engineering Recommendations; EREC G99, G59, G83, G59)
• Protezione di interfaccia (CEI 0-21)
• Automatic disconnection device between a generating plant parallel to the network and the public network
• Universal for generating plants for safe network decoupling

Function description:

Network disconnection (switch-off) occurs when at least one of the activated protective or monitoring functions is triggered.
If the switch-on conditions or (re-)connection conditions are fulfilled, the VMD460-NA enables the coupling of the generating plant to the network.
Details are regulated by the applicable (application) standard and guideline.
The following monitoring and protective functions are implemented in the VMD460-NA:
• Voltage protection functions
––Rise-in-voltage protection: U>, U>>
––Under-voltage protection: U<<, U<
• Frequency protection functions
–– Rise-in-frequency protection: f>, f>>
––Under-frequency protection: f<<, f<
• Islanding detection:
––df/dt (Rate of Change of Frequency; ROCOF)
––Vector shift detection
• Unbalance detection
• Monitoring of the trigger circuits and coupling switches by means of contact feedback
• Remote trip/remote switch-off (e.g. via ripple control signal receiver)
• Test function (test button) for testing the trigger circuit, the coupling switch and for determining the switch-off times
• Automatic self test

Approvals/certificates of conformity/manufacturer declarations:

• VDE-AR-N 4105:2018-11
• VDE-AR-N 4105:2011-08
• VDE-AR-N 4110:2018-11
• BDEW technical guideline 2008 incl. amendments until 01.2013
• G99/1:2019
• G59/2
• G59/3
• G98/1:2019
• G83/2
• CEI 0-21 (:2012-06, :V1:2012-12, :V2:2013-12, :2014-09, :V1:2014-12, :2016-07, V1:2017-07)
• C10/11:2012-06
• DIN V VDE V 0126-1-1(:2016-06, /A1:2012-02)

Wiring diagram:

BENDER 3phase AC under/over voltage relay VMD460 wiring diagram

Dimensions:

BENDER 3 phase AC under/over voltage relay VMD460 dimensions

 

Technical data:

BENDER 3 phase AC under/over voltage relay VMD460 technical data

Ordering information:

BENDER 3phase AC under/over voltage relay VMD460 ordering information