micromho
TRANSCRIPT
TRANSMISSION PROJECTS DIVISION
Form No.
Record Sl.NO. Sheet - 1
PROJECT: Bay/Circuit/subsystem ref. Total Sh. 1
DISTANCE PROTECTION RELAY TYPE Drg. Ref.
MICROMHO - SHNB
Circuit Ref Site
Designation AC Current
Model No. Aux. Voltage
Serial No. DC Volts
AC Volts
Settings :
K1 K14 K33 a/b mSec.
K2 K15 K34 tz2ph mSec.
K3 K16 K51 z2N mSec.
K4 K21 K52 tz3ph mSec.
K5 K22 K53 tz3N mSec.
K11 K24 K54 tz 6 mSec.
K12 K31 Oph mSec.
K13 K32 O N
Basic setting Zph = K1 + K2/In = Ohms.
Zn =
E/F Compensation K = Zn/Zph =
Z1 = (K11+K12+K13) K14xZph = Ohms.
Z1X = Z1(K15+K16) = Ohms.
Z2 = (K21+K22)K24xZph = Ohms.
Z3 = (K31+K32)K33xZph = Ohms.
Z3R = K33 x K34 x Zph = Ohms.
PSB setting K50 = (K51 +K52)K53xZph = Ohms.
Z5F = 2(1-K54)K50 = Ohms.
Z5R = 2xK54xK50 = Ohms.
Z6F = K50 {0.3+2(1-K54)} = Ohms.
Z6R = K50 {0.3 + 2(1-K54)} = Ohms.
1.0 DC Drain current
2.0 Level detector check
COMMISSIONING TEST RECORD
2.1 Voltage Level detector :(44.5V+/-10%) Test Option 46
Phase Terminal LED P/U Volts
AN 2V 1 - 4 Z1
BN 2V2 - 4 Z2
CN 2V3 - 4 Z3
2.2 Lowset current level detector : Test Option 47
Phase Terminal LED P/U current Theo. current
A 1V 1 - 2 Z1 0.087 X In X 4.8/Zph
B IV 3 - 4 Z2
C IV 5 - 6 Z3
N IV 7 - 8 SOFT
2.3 Highest current level detector : Test Option 46
Phase Terminal LED P/U current Theo. current
A 1V 1 - 2 A 0.087 X In X 4.8/Zph
B IV 3 - 4 B
C IV 5 - 6 C 0.5 X 4.8X In / Zph
N IV 7 - 8 N
2.4 NPS Voltage level detector :
Phase Terminal LED P/U current Theo. current
AN 2V 1 - 4 V Fail 3 X 0.15 X 63.5
BN 2V 2 - 4 V Fail =28.6
CN 2 V3 - 4 V Fail
A - A' 2 V 7 - 8 V Fail 0.1 X 63.5 = 6.35 V
2.4 NPS Lowest current level detector:
Phase Terminal P/U Volts Theo. Current
AN 2V 1 - 4 Z1
BN 2V2 - 4 Z2
CN 2V3 - 4 Z3
2.6 NPS Hightest current level detector
Phase Terminal P/U current Theo. current
A 1V 1 - 2
B IV 3 - 4
C IV 5 - 6
N IV 7 - 8
3 .0 Reach test calculation
3 .1 Phase - Phase fault
Reflected Impedance = 2 x Relay setting / CTR
% Theo. Reach = Reflected Imp. /Box setting Imp. X 100
Setting CTR
Box setting
X R
Z Angle Theo. Reach
Z1 Ohms %
Z1X Ohms %
Z2 Ohms %
Z3F Ohms %
Z3R Ohms %
Z5F Ohms %
%
3.2 Phase - E/F
Reflected Impedance = (1 = K) Relaly setting / CTR
% Theo. Reach = Reflected Imp / Box setting Imp. X 100 %
Setting CTR
Box setting
X R
Z Angle Theo. Reach
Z1 Ohms %
Z1X Ohms %
Z2 Ohms %
Z3F Ohms %
Z3R Ohms %
%
3X0.029XInX4.8/Zph
3X0.029XInX4.8/Zph
Box Setting
4.0 Reach Test Results : (Values in percentage )
AN BN CN AB BC CA
Zone 1
Zone 2
Zone 3 For
Zone 3 Rev
Zone 5 For
Zone 5 Rev
Zone 6 For
Zone 6 Rev
5.0 SOTF check :
6.0 psb Check :
7 0 VT Supervisin Check :
8 0 Synch. Polarising Check :
9 .0 Timer Links check :
+Z2 E/F : Test Option 42
+Z2 Ph/F : Test Option 43
+Z3 E/F : Test Option 44
+Z3 E/F : Test Option 45
10.0 Output Contacts check :
11.0 Thyristor Operation check :
:
d - End test :
14.0 Directional check :
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Date: Date: Date: Rev. No:0