The feeder and overcurrent protection device is especially designed for a cost-effective and compact protection of feeders and lines in medium voltage systems.

Applications:

• Detection and selective 3-pole tripping of short circuits in electrical equipment of star networks, lines with infeed at one or two ends, parallel lines and open-circuited or closed ring systems of all voltage levels
• Detection of ground faults in isolated or arc suppression-coilground power systems in star, ring, or meshed arrangement
• Backup protection for differential protection devices of all kind for lines, transformers, generators, motors, and busbars
• Universal line protection
• Simple load shedding applications

Features

• Directional and non-directional overcurrent protection with additional functions
• Detection of ground faults of any type in compensated or isolated electrical power systems using the following functions: 3I0>, V0>, fleeting contact, cos φ, sin φ, dir. detection of intermittent ground faults and admittance
• Overvoltage and undervoltage protection
• Frequency protection and frequency change protetion for load shedding application
• Power protection, configurable as active or reactive power protection
• Directional reactive power undervoltage protection (QU protection)
• Single-Line representation in small or large display
• Graphical logic editor to create powerful automation functions and switching sequences in the device
• Detection of current and voltage signals up to the 50th harmonic with high accuracy for selected protection functions and operational measured values
• Integrated electrical Ethernet RJ45 for Engineering PC and IEC 61850 (reporting and GOOSE)
• 1 optional pluggable communication modules, usable for different and redundant protocols (IEC 61850, IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 serial and TCP, PROFINET IO)
• Reliable data transmission via PRP and HSR redundancy protocols
• Serial protection data communication via optical fibers, two- wire connections and communication networks (SDH networks, MPLS electrical power systems, for example using IEEE C37.94, and others), including automatic switchover between ring and chain topology.
• IoT connectivity: Optional communication protocol OPC UA PubSub protocol for secure connection of the devices to the Cloud
• Powerful fault recording (buffer for a max. record time of 80 sec. at 8 kHz or 320 sec. at 2 kHz)
• Download of „operational log „and „fault log” as files according IEEE C37.239 COMFEDE via WEB-Browser from the device
• Easy access to process and device information via a standard WEB-Browser:
  Displaying of all signals, warnings and alarms
  Parameterization: change of settings within an active setting-group
  Fault recording: download, delete and triggering of fault records
• Optional Phasor Measurement Unit (PMU) for detection of synchrophasor measured values and transmission with standard IEEE C37.118 protocol
• Time Synchronisation with IEEE 1558
• Role-based Access Control (RBAC) with central user management in RADIUS/Active Directory
• Protection against unauthorized access to device through inbuilt RADIUS authentication and authorization option
• Standard roles and rights in adherence to standards and guidelines such as IEC 62351-8, IEEE 1686 and BDEW White paper
• Syslog support for central recording and logging of security-relevant events and alarms in accordance with the requirements and regulations such as IEEE 1686, IEC 62443 and BDEW Whitepaper
• Individual Assignment of write and read permission for each device port
• Auxiliary functions for simple tests and commissioning

Housing

Robust hardware in the form of a closed housing for maximum strength in terms of voltage, EMC, climate and mechanical stress in accordance with the IEC 60255 product standard and an extended temperature range of -25°C to + 70°C.

Additional conformal coating of the electronic components for maximum availability even under extreme environmental conditions.

Housing width 1/3 x 19 inch with large or small display, not expandable.

Type of housing:

X Flush mounting

Operation panel:

X Integrated

Type of display:

X Small Display

O Large Display

Key switch:

X without

LEDs/Push buttons:

X 16 LEDs

Binary inputs and outputs / measuring inputs

The number of inputs and outputs is flexible and adaptable within the 1/3 base unit of a modular system:

X 11 BI, 9 BO, 4 CT, 1/3 x 19 inch

O 18 BI, 14 BO, 4 CT, 1/3 x 19 inch

O 11 BI, 9 BO, 4 CT, 4 VT, 1/3 x 19 inch

O 16 BI, 11 BO, 4 CT, 4 VT, 1/3 x 19 inch

Rated auxiliary voltage

O 24 - 48 V DC

x 60 - 125 V DC

X 110 V 250 V DC, 100 V 230 V AC

Communication

The base unit has one free slots on the rear for one plug-in module for communication or special applications

• USB operator interface on the front for notebook or PC
• D-Sub 9-interface, rear for time synchronization
• Integrated Ethernet interface
  X for Engineering Tool
  O for Engineering Tool and IEC 61850 Reporting and GOOSE
• Plug-in modules for system ports
  O Without system port
  O electrical for serial protocols (1 port)
  O electrical for serial protocols (2 port)
  O optical 820 nm, 1.5 km, for serial protocols (1 port)
  O optical 820 nm, 1.5 km, for serial protocols (2 ports)
  O electrical Ethernet, 100 MBit, integrated Switch
  O optical Ethernet, 100 MBit, integrated Switch
• Plug-in modules for various applications
  O 4 analog inputs 20 mA/10V
  O up to 3 optical sensors for arc protection

In accordance with the selected communication interface the required communication protocol should be easily activated via the engineering tool. The following protocols should be selectable.

• Serial protocols
  IEC 60870-5-103
  DNP3 serial
• Ethernet protocols
  IEC 61850 Edition 1 and 2
  IEC 60870-5-104
  DNP3 TCP
  Modbus TCP
  PROFINET IO
• Redundancy Ethernet protocols
  RSTP
  PRP V1
  HSR

Functionality

The protection device is equipped with the following protection functions:

X Basic functions

• Protection functions for 3-pole tripping
• Undercurrent (37)
• Temperature supervision (38)
• Negative-sequence system over current protection (46)
• Thermal overload protection (49)
• Over current protection, ground (50N/51N)
• Sensitive ground-current protection for systems with resonant or isolated neutral (50Ns/51Ns)
• Closed-circuit supervision (74CC)
• Trip-circuit supervision (74TC)
• Lockout (86)
• Measured values
• Switching-statistic counters
• Logic editor
• Inrush-current detection
• External trip initiation
• Control
• Fault recording of analog and binary signals
• Monitoring and supervision
• Frequency tracking group
• Temperature acquisition via communication protocol

Optional functions

O Synchrocheck, synchronizing function (25)

O Undervoltage protection "3-phase" or “pos. seq V1” "universal Vx" (27)

O Undervoltage-controlled reactive power protection (27)

O Power protection active/reactive power (32, 37)

O Overvoltage protection, negative sequence system (47)

O Circuit-breaker failure protection (50BF)

O Overvoltage protection "3-phase" or "pos.seq. V1" or "universal Vx"(59/59N)

O Directional overcurrent protection, phase (67)

O Directional overcurrent protection for ground-faults (67N)

O Directional sensitive ground-fault detection for systems with resonant or isolated neutral for
a) static faults
b) Cos-/Sin Phi,
c) transients faults
d) Phi (V, I).
e) admittance  (67Ns)

O Automatic reclosing, 3-pole (79)

O Frequency protection "f>" or "f<" or "df/dt" (81)

O Vector jump protection

O Arc protection

O Circuit breaker wear monitoring

O Cyber Security: Role Base Access Control (RBAC)