ABB REL 356

ABB REL 356 Current Differential Protection
3-1
Settings and Application
Settings and Applications
Introduction
REL 356 can be set through the front panel HMI or through remote communication by PC program or network.
This section will follow the sequence of settings displayed in the front panel display when the relay system is in the
settings mode.
Reference will be made to current levels based on 5 A secondary ct’s. For 1 A ct’s, multiply the current levels by 0.2.
Table 3-1. Setting Table
Note 1:
Note 3: These settings have a "OUT" option for disabling a corresponding function.
Note 4:
The impedance setting. The setting ranges shown are for 5 A ct. The displayed setting range is multiplied by 5 if a 1 A ct is
used (CTYP = 1).
Note 5: 9600 bps Audio Tone option.
Note 2: These settings have a "BLK" option for disabling a corresponding function.
Note 6: 56/64 kbps Digital Communication option.
Note 7: Only if optional extended output is included.
Note 8: Only if optional backup system is included.
CTR
Current transformer ratio
5500030XX.XX
Format Min Max Step Units NotesSetting
Name
VERS
Software Version
99.990.01XX.XX
FREQ
Rated frequency setting selection
Hz
50/60
RP
Enable readouts in primary values
YES/NO
CTYP
Current transformer type: 1A or 5A ct
451 CTYP= InXXXX
VTR
Voltage transformer ratio
107000300XXXX
OSC
Triggering for storing oscillographic data
D TRIP/ITRG/ V D I
FDAT
Triggering for storing fault target data
TRIP/ITRG
TRGG
Ground current pickup level trigger for OSC and
FDAT
0.510.00.5XX.XX
TRGP 0.510.00.5XX.XX
Phase current pickup level trigger for OSC and
FDAT
CD D V D I
Change detector option
DDTT XXXX
Dedicated direct transfer trip
ILTS
A
2
4
0
IN/OUT
IL Trip supervision
RBEN NORB/ALRB
Reclose block enable
SOBT
msec
1508
XXXX
Stub/open breaker timer
OPBR IE/52B/BOTH/OUT
Open breaker selection
IE
0.010.500.20
X.XXX
Very low set phase current pickup value in amps
IPL 0.120.00.5XX.XX
Low set phase current pickup value in amps
IPH 0.180.04.0XX.XX
High set phase trip current pickup setting in amps
IGL 0.120.00.5XX.XX
Low set ground current pickup value in amps
IGH
High set ground trip current pickup setting in amps
0.180.04.0
1
1
1
1
1, 3
1
1, 3
XX.XX
For 5 A relay. Setting and step are a factor of 5 lower for 1 A relay.
7
A
A