The High Speed Busbar Transfer (HBST) device is a compact multi-function device that is specially designed for the very fast transfer of power from the busbar to the power supply.

HSBT device continuously supervises the voltage at main incomer, the motor busbar, and the alternative incomer power source. The function automatically disconnects a faulty incomer and transfers the busbar load to an alternative power source. This ensures an optimal transfer with a small impact on the manufacturing processes and no risk of damaging equipment. This functionality avoids expensive and unplanned shutdowns.  High speed busbar transfer device is typically required where electrical supply for motors operating critical parts of a manufacturing process is secured by connecting an alternative incomer on standby.

The required HSBT function provides an ultra-fast switching time of up to 10 ms. The fast transfer mode is completely compliant with ANSI C50.41 standard.

To warrant a high level of security and reliability, the software works with various monitoring functions.

Application

The pre-defined application templates include:

• Single busbar with 2 incomers
• Sectionalized single busbar with 2 incomers
• Single busbar with 3 incomers
• Double busbar with 2 incomers
• Sectionalized double busbar with 3 incomers

Features

• High speed busbar transfer
• Multi-breaker applications with up to 20 circuit breakers
• Ultra-fast transfer times of approximately 10 ms for the fast mode
• Option of simultaneous, sequential and parallel transfer sequences
• Settable transfer sequence and transfer groups
• Different switching modes: ultra-fast mode, Real Time Fast mode, Synchro-Check for parallel transfer, residual voltage, In-phase mode and longtime switching
• Algorithm to predict Δφ and V/f diff. at the closure instant of the circuit-breaker to be closed
• Fault detection function. Block of transfer process in case of fault on busbar, manual CB open, CB withdraw or test position, PT wire broken, MCB PT open, load fault (as motors) or system power dip.
• Pre-defined application templates including transfer directions
• Fast transfer completely compliant with ANSI C50.41
• Flexible load Shedding function

Additional functions and features

• High speed binary output contacts with approx.1ms for fast closing times
• Flexible load-shedding function
• Circuit breaker de-coupling when OPEN failed
• Transfer start locally or remotely
• Manual CB opening to block HSBT
• ON/OFF HSBT function can be set locally or remotely
• HSBT test mode supported
• Standard protection functions are supported
• Supervision function
• Control function
• Synchron/Asynchron with balancing commands
• Paralleling function (1.5- and 2-channel design)
• Operation of up to 4 synchronizing points
• Flexible recording functions
• Merging Unit functionality
• Various monitoring function to warrant a high level of security and reliability
• Two different measuring algorithms for the paralleling function are used in accordance with the multi-channel redundancy to avoid over functions through systematic errors
• Applying and processing of different measurement methods independently of each other with different memory areas.
• High level of reliability and flexible options for adaption to the equipment requirements allow a wide variety of applications
• Max. 443 binary inputs, 225 binary outputs and 64 analog inputs
• Stabilization function for the output of adaptive frequency control pulse
• Synchrocheck function for manual synchronization

• Redundant power supply optional
• High density of inputs and outputs using expansion modules for up to 2x19” rack device

• Ruggedized design and conformal coated electronical boards for high electric strength and installations in harsh environments - as standard

• Optional arc protection with a tripping time of 3-4 ms for protection of assets and personal – Safety first
• Easy integration and retrofit of arc protection, transient ground-fault detection, transformer control, PMU and process bus for efficient network operation
• Single-Line representation selectable in small or large display
• Graphical logic editor to create powerful automation functions and switching sequences in the device according to IEC 61131-3 standard
• 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)
• Two slots for optional plug-in modules for serial and/or Ethernet-based protocols
• Optional communication module with further 3 slots plug-in modules for serial and/or Ethernet-based protocols and full availability of the communication ring when the switchgear is enabled for servicing operations by means of separate auxiliary power supply of the communication module
• Large number of serial and Ethernet-based protocols: IEC 60870-5-103, DNP3 serial and TCP, Modbus TCP, IEC 60870-5-104, PROFINET, and IEC 61850 Ed1 and Ed2.1
• Reliable data transmission via Ethernet redundancy protocols PRP and HSR, for process bus and high-availability station communication
• IoT interface for integration in cloud-based systems
• 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.
• Powerful fault recording (buffer for a max. record time of 80 sec. at 8 kHz or 320 sec. at 2 kHz)
• Easy, fast and secure access to device via Web-Browser from the device: Download of logs as files according to IEEE C37.239 COMFEDE with https connection
• Fault recording: Download, delete and triggering of fault records
• Displaying of Single line diagrams and device display pages, indications, vector diagrams of energizing quantities
• Parameterization: Change of settings within an active setting-group
• Optional Phasor Measurement Unit (PMU) for detection of Synchrophasor measured values and transmission with standard IEEE C37.118 protocol
• Time Synchronization with IEEE 1558v2/PTP, PPS, IRIG-B
• 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 inches to 2/1 x 19 inches with large, small or without display. Flexible adjustable and expandable I/O quantity structure within the scope of the system with 1/6 expansion modules

Type of housing

X Flush mounting

O Surface mounting

Power Supply

X Standard

O Redundant

Operation panel

X Integrated

O Detached HMI, only for surface mounting housing

Type of display:

O No display

X Small Display

O Large Display

Key switch

X without

O with, only for flush mounting housing

LEDs/Push buttons

X 16 LEDs

O 32 LED

O 48 LED

O 64 LED

O 80 LED

O 8 Push buttons + LEDs

Binary inputs and outputs / measuring inputs

The number of inputs and outputs is flexible and expandable with 1/6 expansion modules plugged on the 1/3 base unit of a modular system.

X AV1: 19 BI, 15 BO, 8I, 8V, 1/2 x 19 inches

O AV2: 27 BI, 21 BO, 12I, 8V, 2/3 x 19 inches

O AV3: 35 BI, 27 BO, 16I, 12V, 5/6 x 19 inches

O AV4: 31 BI, 25 BO, 20I, 12V, 5/6 x 19 inches

Rated auxiliary voltage

O 24, 48 V DC

X 60 to 250 V DC and 115 to 230 V AC

Communication

The base unit has two free slots on the rear for plug-in modules for communication or special applications. The base unit is expandable with a communication module with up to three further slots for plug-in modules.

• 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
O for Engineering Tool and IEC 61850 Reporting

• Communication module, max 1 for each device with additional 3 slots plug-in modules for serial and/or Ethernet-based protocols and full availability of the communication ring when the switchgear is enabled for servicing operations by means of separate auxiliary power supply of the communication module

X without
O with one communication module for up to three additional plug-in modules

• Serial Plug-In modules for asynchronous serial protocols like IEC 60870-5-103, DNP for system port

X Without
O electrical, 1 interface
O electrical, 2 interface

O optical 820 nm, 1.5 to 2km ,1 interface
O optical 820 nm, 1.5 km to 2km, 2 interface

• Serial Plug-in modules for protection interface for unidirectional data exchange

X without
O optical 1300 nm, max. 24 km via 2 single mode optical fibers or   max. 4 km via 2    multimode optical fibers, 1 interface
O optical 1300 nm, max. 24 km via 2 single mode optical fibers or max. 4 km  via 2 multimode optical fibers, 2 interface
O optical 1300 nm, max. 60 km via single mode optical fiber, 1 interface
O optical 1300 nm, 60 km via single mode optical fiber, 2 interface
O optical 1550nm, 100 km via single mode optical fiber, 1 interface
O optical 1550nm, 100 km via single mode optical fiber , 2 interface

• Serial Plug-in modules for protection interface for bidirectional data exchange

O without

O optical 1300 nm, max. 40 km via one single- mode optical fiber (with integrated fiber-optic multiplexer, 1 interface)
O optical 1300 nm, max. 40 km via one single- mode optical fiber (with integrated fiber-optic multiplexer, 2 interface)

O optical 1550 nm, max. 40 km via one single- mode optical fiber (with integrated fiber-optic multiplexer, 1 interface)
O optical 1550 nm, max. 40 km via one single- mode optical fiber (with integrated fiber-optic multiplexer, 2 interface)

• Plug-in Modules for Ethernet

O Without

O 2x RJ45 electrical, configurable with or without integrated switch   with max. distance of 20 meters
O 2x optical duplex LC 1300 nm interface, configurable with or without   integrated switch. The maximum optically permitted distance via 50/125 µm   or 62.5/125 µm multimode optical fibers is 2 km.

O 2x optical for process bus, duplex LC 1300 nm interface, configurable with   or without integrated switch. The maximum optically permitted distance   via 50/125 µm or 62.5/125 µm multimode optical fibers for up to 2 km.

O 2x optical for process bus, duplex LC 1300 nm interface, configurable with   or without integrated switch. The maximum optically permitted distance   via 50/125 µm or 62.5/125 µm multimode optical fibers for up to 24 km.

The optical transmission and receiving level are measured in the module and can be displayed.

In accordance with the selected communication interface the required communication protocol should be easily activated via the engineering tool depending on the selected type of serial or Ethernet plug-in module

• Serial protocols
  IEC 60870-5-103
  DNP3 serial
• Ethernet protocols

IEC 61850 Edition 2.1
IEC 61850-8-1 Client-Server Communication

IEC 61850-8-1 GOOSE

IEC 61850-9-2 Merging Unit

IEC 61850-9-2 Process-Bus Client
IEC 60870-5-104
DNP3 TCP
Modbus TCP
PROFINET IO
IEEE C37.118 protocol (Synchrophasor, PMU)

• Additional Ethernet protocols and services

DHCP, DCP (with automatic IP configuration)

Line mode,RSTP, PRP, HSR Ethernet ring redundancy

SNTP time synchronization via Ethernet

SNMP V3 network management protocol

IEEE 1588v2 PTP protocol via Ethernet

Plug-in modules for various applications
O Measuring-transducer module with four 20-mA analog inputs
O Arc protection module with up to 3 optical point or line sensors per arc protection plug-in module, up to max. 15 sensors for modular devices

X Point sensors with line lengths from 3 m to 35 m.

O Line sensors detect arcs along the entire sensor length.

  Lengths from 5 m to 40 m are available.

  Line sensors are connected via a line to the arc protection module.

Functionality

The device is equipped with the following functions:

X Basic functions

High Speed Busbar Transfer

Incl. 2 x Transfer direction

Suitable for 2 breaker applications -> extendable

Externe trip initiation

Frequency-tracking groups

Extended fault recording: Slow-scan recorder, Continuous recorder, Trend recorder

Multiple sensitive start types

O Electric Fault start

O non-electric fault start

O CB inadvertent open start

O U< start

O f< start

O Manual start

O additional start

Switching type

O Fast mode

O real time fast mode (RTFT)

O In-phase mode

O Residual voltage mode

O Long time mode

Selectable Transfer direction

O 1 to 20 different transfer direction

Optional functions

O Paralleling function 1.5 channel for each sync. location (up to 4 sync. locations)

O Paralleling function 2 channel for each sync. location (up to 4 sync. locations)

O Up to 4 balancing commands

O Undervoltage protection "3-phase" or "universal (27)

O Rate-of-voltage-change protection (27R/59R)

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

O Power-plant disconnection protection (37)

O Overcurrent protection, phase (50/51TD)

O Instantaneous tripping at switch onto fault (SOTF)

O Instantaneous high-current tripping I>>> (50HS)

O Overcurrent protection, ground (50N/51N)

O Circuit-breaker failure protection, 3-pole (50BF)

O Circuit breaker restrike protection (50RS)

O Overvoltage protection "3-phase" or "positive-sequence system V1"or   "universal Vx" (59)

O Voltage-comparison protection (60)

O Trip-circuit supervision (74TC)

O Closed-circuit supervision (74CC)

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

O Vector-jump protection (Δφ>)

O Synchrophasor measurement PMU

O Process Bus Client Protocol (PB Client)

  Note: Dedicated Ethernet plug-in module for process bus required

O Additional IEC 61850-9-2 Merging Unit stream (1x) (MU)

  Note: Dedicated Ethernet plug-in module for process bus required

O Subscription of redundant IEC 61850-9-2 Sampled Value streams, with  

  automatic and manual switching capabilities between Main and Redundant  

  measuring point

O IEEE 1588v2/PTP Grandmaster Clock 

O Circuit breaker wear monitoring

  PQ-Basic measured values: Voltage unbalance, Voltage variations - voltage

  dips, swells and interruptions, TDD - Total Demand Distortion, PQ-10/12 cycle

Switching sequences function

O Cyber Security: Role Base Access Control (RBAC)

O Cyber Security: IEEE 802.1x based network authentication