Dimensions:
254.3 mm x 210.1 mm x 242 mm (H x W x D)
Shipping port:
Xiamen
Warranty:
12 months
Description
ABB RED670 is a line differential protection relay designed for the protection, control, and monitoring of overhead lines and cables in distribution and high-voltage transmission networks. The device delivers phase-segregated current differential protection for heavily loaded lines, multi-terminal configurations, and cable feeders connected to generator block transformers. It supports up to six stabilized current inputs per phase to accommodate multi-breaker arrangements across three to five terminal applications.
The ABB RED670 incorporates charging current compensation to maintain high sensitivity on long overhead lines and underground cables. Inter-IED communication for differential schemes operates via the IEEE C37.94 standard with optional dual-channel redundancy. To ensure uninterrupted protection during differential communication channel outages, the relay features fully independent full-scheme distance protection with quadrilateral and mho characteristics. Additional integrated functions include single-, two-, and three-phase auto-reclosing, synchrocheck, breaker failure protection, disturbance recording, and fault location.
Features
Phase-segregated line differential protection with charging current compensation for two to five line terminals
Full-scheme line distance protection with selectable quadrilateral and mho characteristics across six independent zones
Support for IEEE C37.94 optical communication interfaces with redundant channel capabilities
Dual-bias differential slope evaluation with unrestrained instantaneous high-differential tripping
Integrated transformer in-zone differential protection with 2nd and 5th harmonic restraint
Auto-reclosing functionality for single-, two-, and three-phase tripping with integrated synchrocheck logic
Support for IEC 61850-9-2LE process bus interfacing with up to six Merging Units (MU)
Applications
Transmission and distribution overhead line protection
Underground cable feeder protection
Multi-terminal lines and multi-breaker arrangements (one-and-a-half breaker and ring busbar systems)
Cable feeders connecting to generator block transformers
T-feeder and line reactor protection using high-impedance differential functions
Technical Specifications
Parameter
Specification
Manufacturer
ABB / Hitachi Energy
Product Series
Relion 670 Series
Device Type
Line Differential Protection IED
Main Protection Function
Line Differential Protection (87L / 87LT)
Backup Protection Function
Full-Scheme Distance Protection (21)
Current Inputs
Up to 6 stabilized current inputs per phase
Line Terminal Capacity
Up to 5 terminals
Process Bus Communication
IEC 61850-9-2LE (Up to 6 Merging Units)
Differential Optical Protocol
IEEE C37.94
Station Communication Protocols
IEC 61850-8-1, LON, SPA, DNP3.0, IEC 60870-5-103
Tripping Logic Modes
Single-phase, two-phase, three-phase
Thermal Protection Temperature Units
degC
ABB RED670 Mechanical Specifications
Case Size
Height (h)
Width (w)
Depth (d)
Maximum Weight
6U, 1/2 × 19"
254.3 mm
210.1 mm
242 mm
≤10kg
6U, 3/4 × 19"
254.3 mm
322.4 mm
242 mm
≤15kg
6U, 1/1 × 19" (Full Rack)
254.3 mm
434.7 mm
242 mm
≤18kg
Installation Guidelines
Grounding: Connect the terminal server earth pin directly to the main station grounding bar using short, low-impedance grounding strips.
Shielding: Ensure all binary I/O, CT/VT analog connections, and communication cables utilize shielded wiring grounded according to substation standards.
Optical Interfacing: Route IEEE C37.94 optical fiber cables within dedicated conduit or trays to maintain minimum bending radiuses and prevent mechanical stress.
CT Circuit Wiring: Verify secondary CT circuits are shorted prior to disconnecting or servicing terminal blocks to prevent lethal overvoltages.
Cooling and Ventilation: Maintain clear vertical airflow clearance above and below the panel-mounted enclosure for thermal dissipation.
Fullscheme distance protection, quadrilateral for earth faults
ZMMPDIS, ZMMAPDIS
Impedance (Alt 3)
1MRK005907-HA
Directional impedance element for mho characteristic
ZDMRDIR
Impedance (Alt 3 & Opt 1)
1MRK005907-KA
Additional distance protection directional function for earth faults
ZDARDIR
Impedance (Alt 3 & Opt 1,2,4)
1MRK005907-LA
Mho Impedance supervision logic
ZSMGAPC
Impedance (Alt 3)
1MRK005907-MA
Faulty phase identification with load encroachment
FMPSPDIS
Impedance (Alt 3 & Opt 1,2,4)
1MRK005907-NA
Distance protection zone, quadrilateral characteristic, separate settings
ZMRPDIS, ZMRAPDIS
Impedance (Alt 4)
1MRK005907-PA
Phase selection, quadrilateral characteristic with settable angle
FRPSPDIS
Impedance (Alt 4)
1MRK005907-SB
High speed distance protection, quad and mho characteristic
ZMFPDIS
Impedance (Alt 5)
1MRK005907-RB
High speed distance protection for series compensated lines, quad and mho
ZMFCPDIS
Impedance (Alt 6)
1MRK005907-UA
Power swing detection
ZMRPSB
Impedance (Optional)
1MRK005908-AA
Automatic switch onto fault logic, voltage and current based
ZCVPSOF
Impedance (Optional)
1MRK005907-VA
Power swing logic
PSLPSCH
Impedance (Optional)
1MRK005908-CB
PoleSlip/Out-of-step protection
PSPPPAM
Impedance (Optional)
1MRK005908-GA
Out-of-step protection
OOSPPAM
Impedance (Optional)
1MRK005908-DA
Phase preference logic
PPLPHIZ
Impedance (Optional)
1MRK005920-AA
Scheme communication logic for distance or Overcurrent protection
ZCPSCH
Scheme Communication
1MRK005920-BA
Phase segregated Scheme communication logic for distance protection
ZC1PPSCH
Scheme Communication
1MRK005920-CA
Current reversal and weak-end infeed logic for distance protection
ZCRWPSCH
Scheme Communication
1MRK005920-DA
Current reversal and weak-end infeed logic for phase segregated communication
ZC1WPSCH
Scheme Communication
1MRK005920-EA
Local acceleration logic
ZCLCPSCH
Scheme Communication
1MRK005920-FA
Scheme communication logic for residual overcurrent protection
ECPSCH
Scheme Communication
1MRK005920-GA
Current reversal and weakend infeed logic for residual overcurrent protection
ECRWPSCH
Scheme Communication
1MRK005921-AX
Direct transfer trip
DTT
Scheme Communication
1MRK005922-MX
Configurable logic blocks Q/T
-
Logic Functions
1MRK005922-AY
Extension logic package
-
Logic Functions
1MRK005924-HA
Circuit breaker condition monitoring
SSCBR
Monitoring
1MRK005925-XB
Fault locator
LMBRFLO
Monitoring
1MRK005930-TA
Process Bus communication IEC 61850-9-2
-
Station Communication
1MRK002924-YB
IEC 62439-3 parallel redundancy protocol
PRP
Station Communication
FAQ
What is the primary function of the line differential protection relay?
The device provides phase-segregated current differential protection and integrated distance backup protection for overhead transmission lines, cables, and multi-terminal feeder networks.
Which communication standard is used for remote differential data exchange?
The remote differential communication between relays is based on the IEEE C37.94 optical standard.
How many line terminals can the relay support in differential schemes?
The device supports up to three terminals in multi-breaker configurations or up to five terminals in single-breaker configurations.
Does the relay support process bus communication?
Yes, the device supports IEC 61850-9-2LE process bus communication with up to six Merging Units.
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