ABB REF 54 Series Technical Reference Manual, General

106
1MRS750527-MUM
Feeder Terminal
Technical Reference Manual, General
REF 54_
8.2. Release 1.5
8.2.1. Changes and additions to earlier released revisions
General
• Additional scaling factor for setting the rated current/voltage of the protected unit
(separate scaling factor for channels 1...10). For further information
refer to
Section “Scaling the rated values of the protected unit for analog channels” on
page 38.
• Technical data of the VT1, VT2, VT3 and VT4 voltage transformers; range of the
adjustable rated voltage for primary current transformers is 0...440 kV instead of
the earlier 0...150 kV.
• Changes in the measurement function block MEFR1; the output “f” is renamed as
“FREQ”. For further information, refer to the technical description of the MEFR1
function block.
• The storing procedure has changed; for further information, refer to section
“Saving parameters” in version E or later of the Operator’s Manual.
Protocols & communication
• SPA file transfer support on a serial communication port on the front panel of the
feeder terminal enables the following:
• Downloading of the relay configuration via a front port.
• Uploading of recording files of the disturbance recorder MEDREC16.
• Uploading of the relay image file for the Relay Configuration Tool CAP 505
and the Relay Setting Tool CAP 501.
• SPA file transfer support on the rear serial port RS-485.
Hardware & mechanics
• Extended 4 mm clearance according to IEC 60664-1 (Insulation coordination for
equipment within low-voltage systems).
• New CPU module with a SW downloading port X3.1 at the rear plate of the relay.
Table 8.2.1-1 New protection functions
Function Description
DOC6Low,
DOC6High,
DOC6Inst
Directional overcurrent protection as low-set, high-set and instantaneous
stages
Freq1St1...
Freq1St5
Underfrequency or overfrequency protection, including the rate of change
function, as five stages
SCVCSt1,
SCVCSt2
Synchro-check or voltage-check function as two stages
TOL3Cab Thermal overload protection for cables
Table 8.2.1-2 New measurement functions
Function Description
MEDREC16 Transient disturbance recorder

ABB REF 54 Series Specifications

General

Brand	ABB
Model	REF 54 Series
Category	Touch terminals
Language	English