THREE-PHASE OVERCURRENT +
DIRECTIONAL EARTH FAULT
50/51,50N/51N,51BF,59Uo,67N,68,I2t
IM30-D m Three Phase-Fault levels.
m Three Directional or not Directional Earth-Fault levels
I> I>> O>
PROG/ BLOCK BR. FUNC.
U>>
I.R.F. INPUT FAIL. DISAB.
with Zero Sequence voltage polarization. I/In 100%
m Zero Sequence Overvoltage level.
N05 -R3
m Selectable double setting program.
m Breaker interruption energy SI2t.
M-LINE
MULTIFUNCTION
MODE SELECT +
m Inrush current bias. OVERCURRENT +
_
DIRECTIONAL
m Breaker Failure protection. EARTH FAULT
PROG.
RELAY TYPE
m Blocking Outputs and Blocking Inputs for pilot wire IM30-D
selectivity coordination.
M
ENTER/RESET
LINE m Modbus Communication Protocol.
m UL / CSA listed.
Three-phase overcurrent plus directional earth fault relay with programmable Time Current Curves
suitable for protection of HV & MV Transmission and Distribution systems with insulated, resistance
earthed or compensated neutral.
The neutral current and voltage input circuits include a 3rd harmonic active filters.
Two complete setting programs remotely selectable via digital input or via serial port
¤ Real Time Measurements = IA - IB - IC - Io - Uo - jo
¤ Maximum Demand and Inrush Recording = IA - IB - IC - Io - Uo
Programmable Input Quantities
¤ Fn = System frequency : (50 - 60)Hz
¤ In = Rated primary current of phase CTs : (0 - 9999)A, step 1A
¤ On = Rated primary current of earth fault detection CT : (0 - 9999)A, step 1A
Connection Diagram
IM30-D
14
B3
B2 14
B3
B2
RS485
AUXILIARY
} RS485
SUPPLY
C US LISTED MS-SCE1343-R4 MS-SCE1356-R3
19CN
RINA IND.CONT.EQ. Standard Output Double Output
22
IM30-D M N05-R3
1F - 50/51 : First Overcurrent Level
¤ Current setting range : 1I = (0.1 - 4)In, step 0.01In
¤ Instantaneous element : £ 0.03s
¤ Definite trip time delay in the mode (D)
(10x[1I] in inverse time operation modes) : t1I = (0.02 - 42)s, step 0.01s
¤ Time current curves F(1I) : Indepdent Definite Time (D), IEC (A / B / C), IEEE (MI / VI / I / EI / SI)
2F - 50/51 : Second Overcurrent Level
¤ Current setting range : 2I = (0.1 - 40)In, step 0.1In
¤ Instantaneous element : £ 0.03s
¤ Independent time delay : t2I = (0.02 - 60)s, step 0.01/0.1s
3F - 50/51 : Third Overcurrent Level
¤ Current setting range : 3I = (0.1 - 40)In, step 0.1In
¤ Instantaneous element : £ 0.03s
¤ Independent time delay : t3I = (0.02 - 60)s, step 0.01/0.1s
1F - 50/51N - 67N : First Directional Earth Fault Level
¤ Current setting range : 1O = (0.02 - 0.4)On,step 0,01On
¤ Instantaneous element : £ 0.04s
¤ Definite trip time delay in the mode (D)
(10x[1O] in inverse time operation modes) : t1O = (0.05 - 30)s,step 0.01/0.1s
¤ Time current curves F(1O) : Indepedent Definite Time (D), IEC (A / B / C), IEEE (MI / VI / I / EI / SI)
¤ Minimum Zero Sequence Voltage level for Earth Fault operation : 1Uo = (1 - 50)V, step 1V
¤ Operation mode of the element 1O : F1ao = Dis : Non Directional - Sup = Directional supervision only - Dir = Full directional
¤ Maximum Directional Sensitivity angle : 1ao = (0 - 359)°, step 1°
2F - 50/51N - 67N : Second Directional Earth Fault Level
¤ Current setting range : 2O = (0.02 - 2)On, step 0.01On
¤ Instantaneous element : £ 0.04s
¤ Independent definite trip time delay : t2O = (0.02 - 60)s, step 0.01/0.1s
¤ Minimum Zero Sequence Voltage level for Earth Fault operation : 2Uo = (1 - 50)V, step 1V
¤ Operation mode of the element 2O : F2ao = Dis : Non Directional - Sup = Directional supervision only - Dir = Full directional
¤ Maximum Directional Sensitivity angle : 2ao = (0 - 359)°, step 1°
3F - 50/51N - 67N : Third Directional Earth Fault Level
¤ Current setting range : 3O = (0.02 - 2)On, step 0.01On
¤ Instantaneous element : £ 0.04s
¤ Independent definite trip time delay : t3O = (0.02 - 60)s, step 0.01/0.1s
¤ Minimum Zero Sequence Voltage level for Earth Fault operation : 3Uo = (1 - 50)V, step 1V
¤ Operation mode of the element 3O : F3ao = Dis : Non Directional - Sup = Directional supervision only - Dir = Full directional
¤ Maximum Directional Sensitivity angle : 3ao = (0 - 359)°, step 1°
F 59Vo : Zero Sequence Overvoltage Element
¤ Current setting range : Uo = (1 - 50)V, step 1V
¤ Instantaneous element : £ 0.04s
¤ Independent definite trip time delay : tUo = (0.02 - 65)s, step 0.01/0.1s
Stabilization on Inrush current
¤ Automatic doubling of the operation levels 2I and/or 3I : 2Ix2 = ON/OFF 3Ix2 = ON/OFF
¤ Activation level : di/dt = ³ 25 In/s
¤ Revert level : I< 1.25In
Circuit Breaker Interruption Energy
¤ Circuit Breaker rated current : Ii = (0.1 - 9.99)In, step 0.01In
¤ Wear limit for Circuit Breaker Contacts ( S I2tx ) : Wl = (1 - 9999)Wc, step 1Wc
Breaker Failure Element
¤ Trip time delay : tBF = (0.05 - 0.75)s, step 0.01s
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