Functional Tests - Current Differential System; Single Unit Loopback Test - Internal Faults - ABB REL 356 Instruction Booklet

Functional Tests - Current Differential System

The following section documents all the various types of test that can be done to verify operating characteristics of the
REL 356 relay. If a simple single unit test needs to be performed, the "Singe Unit Loopback Test" will be adequeate for
verification purposes. "Dual Units Back to Back Test" are included for lab type back to back verification tests and are
not necessary for field installation type testing.

Single Unit Loopback Test - Internal Faults

STEP 1
Enter the following settings:
Freq = 60
RP = NO
CTYP = 5
CTR = 5000
VTR = 7000
OSC = TRIP
FDAT = TRIP
TRGG = 0.5
TRGP = 0.5
CD = DI
DDTT = 0
ILTS = OUT
RBEN = NORD
SOBT = 16
OPBR = 52b
IE = 0.50
IPL = 0.50
IPH = OUT
IGL = 0.50
IGH = OUT
TDES = 5.0
OTH = 0.50
C0 = 0.0
C1 = 0.10
C2 = 0.70
*NOTE* Set the LDT time to 10.8 msec. for 9600 bps communication channel option A, to 19.3 ms for 9600 bps
communication channel option T or 1.3 msec. for 56/64 kbs communication channel.
Modem version A or T is shown in the style number.
STEP 2
Power down the unit.
STEP 3
Make the connections on the reat of the REL 356 that correspond to the type of communication channel that you have
as specified in "Communication Subsystem Test" above.
Testing
ABB REL 356 Current Differential Protection
ALDT = NO
LDFL = LEAD
LDT = *note*
UNID = 0
KBPS = 64
TTRP = OUT
XCLK = INT
LPBK = YES
XMTR =
RLSD =
XPUD = 1.500
DTYP = KM
PANG = 75
GANG = 75
ZR = 3.0
BKUP = OUT
LOPB = NO
FDOP = IN
FDOG = IN
DIRU = ZSEQ
IOM = 0.5
TOG = BLK
Z2P = 4.0
T2P = 0.1
Z2GF = 4.0
Z2GR = 2.0
Z2GF = 4.0
Z2GR = 2.0
T2G = 0.1
Z3P = 7.0
T3P = 1.0
Z3GF = 7.0
Z3GR = 3.5
T3G = 1.0
OST = WAYO
OSB = BOTH
RT = 2.0
RU = 4.0
OST1 = 2
OST2 = 3
OST3 = 3
OSOT = 100
SETR = YES
TIME = CURRENT
YEAR = CURRENT
MNTH = CURRENT
DAY = CURRENT
HOUR = CURRENT
MIN = CURRENT
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