
APPENDIX
194
NA20 - Manual - 04 - 2022
I2>>def Operating time
Value
s
0.03 ... 10.00 step = 0.01
Negative sequence current / positive sequence current ratio - I2/I1
I21> Element
Setpoints
I21CLP> Mode
I21CLP> Mode
OFF | ON - Element blocking | ON - Change setting
I21CLP> Activation time
Value
s
0.00 ... 9.99 step = 0.01
10.0 ... 100.0 step = 0.1
I21> Logical block
I21>BLK1
OFF | ON
I21> Second harmonic restraint
I21>2ndh-REST
OFF | ON
I21> Breaker failure
I21>BF
OFF | ON
I21> Start relays
I21>ST-K
K1 | K2 | K3 | K4 | K5 | K6 |
I21> Trip relays
I21>TR-K
K1 | K2 | K3 | K4 | K5 | K6 |
I21> Start LEDs
I21>ST-L
START | TRIP | L1 | L2 | L3 | L4 | L5 |
I21> Trip LEDs
I21>TR-L
START | TRIP | L1 | L2 | L3 | L4 | L5 |
Definite time
I2/I1 First threshold definite time
State
OFF | ON
Pickup value
0.10 ... 1.00 step = 0.01
I21>def within CLP
I21CLP>def
0.10 ... 1.00 step = 0.01
I21>def Operating time
Value
s
0.04 ... 0.99 step = 0.01
1 ... 15000 step = 1
Thermal image - 49
Common configuration
Initial thermal image
DthIN
DThe-
taB
0.0 ... 1.0 step = 0.1
Reduction factor at inrush
KINR
1.0 ... 3.0 step = 0.1
Thermal time constant
T
min
1 ... 200 step = 1
DthCLP Operating mode
DthCLP Mode
OFF | ON - Element blocking | ON - Change setting
DthCLP Activation time
Value
s
0.00 ... 9.99 step = 0.01
10.0 ... 100.0 step = 0.1
49 Second harmonic restraint
Dth2ndh-REST
OFF | ON
DthAL1 Element
DthAL1 Enable
DthAL1 Enable
OFF | ON
49 First alarm threshold
DthAL1
DThe-
taB
0.3 ... 1.0 step = 0.1
DthAL1 Logical block
DthAL1BLK1
OFF | ON
DthAL1 Input selective block
DthAL1BLK2IN
OFF | ON
DthAL1 Output selective block
DthAL1BLK2OUT
OFF | ON
DthAL1 Alarm relays
DthAL1-K
K1 | K2 | K3 | K4 | K5 | K6 |
DthAL1 Alarm LEDs
DthAL1-L
START | TRIP | L1 | L2 | L3 | L4 | L5 |
DthAL2 Element
DthAL2 Enable
DthAL2 Enable
OFF | ON
49 Second alarm threshold
DthAL2
DThe-
taB
0.5 ... 1.2 step = 0.1
DthAL2 Logical block
DthAL2BLK1
OFF | ON
DthAL2 Input selective block
DthAL2BLK2IN
OFF | ON
DthAL2 Output selective block
DthAL2BLK2OUT
OFF | ON
DthAL2 Alarm relays
DthAL2-K
K1 | K2 | K3 | K4 | K5 | K6 |
DthAL2 Alarm LEDs
DthAL2-L
START | TRIP | L1 | L2 | L3 | L4 | L5 |
Dth> Element
Dth> Enable
Dth> Enable
OFF | ON
Summary of Contents for NA20
Page 207: ...APPENDIX 207 NA20 Manual 04 2022...