GE Agile P50 Series Technical Manual page 182

7 Protection Parameter Settings
Sr. No
This setting determines the pick-up setting for third stage derived earth fault element.
3.
This setting determines the time-delay for the definite time setting if selected for third stage of derived earth fault element.
4.
This time multiplier setting is used to adjust the operating time of the IEC / UK IDMT characteristic.
5.
This time multiplier setting is used to adjust the operating time of the IEEE / US IDMT curves.
6.
This setting determines the type of reset/release characteristics. IDMT applicable for IEEE curves only.
7.
This setting determines the reset/release time for IEEE IDMT characteristic
8.
This setting determines the reset/release time for Definite Time (DT) and all IDMT curve
9.
This setting determines the enabling/disabling of blocking third stage derived earth fault element due to presence of inrush current.
If IN2>3 Blocking and 2nd Harmonic settings are enabled, then (IN2>3) trip command will be blocked in case 2nd harmonics content in
any phase is above the 2ndHarm Thresh. and fundamental current is below I> lift 2H setting . (Set in SYSTEM CONFIG Menu.)
2.12.5 THERMAL OVERLOAD Settings
Sr. No
1.
This setting determines the operating characteristic of the thermal overload element.
2.
This setting sets the pick-up threshold of the thermal characteristic. This would normally be the maximum full load current.
3.
This setting sets the thermal state threshold at which an alarm will be generated. This corresponds to a percentage of the trip threshold.
4.
This setting determines the thermal time constant for a single time constant characteristic.
5.
This setting specify the k constant of thermal over load function
2.12.6 UNDERCURRENT Settings
Sr. No
1.
This setting is used to enable or disable the Undercurrent protection.
2.
This setting determines pick-up setting for undercurrent element.
3.
This setting determines the time-delay for tripping.
2.12.7 COLD LOAD PICKUP Settings
Sr. No
1.
This setting determines the time the load needs to be de-energized (dead time) before the new settings are applied.
7-16
Parameter
IN2>3 Time Delay 1.00 S
IN2>3 TMS 1.000
IN2>3 Time Dial 1.00
IN2>3 Reset Char DT
IN2>3 RTMS 1.000
IN2>3 tRESET 1.00 S
IN2>3 2H Blocking Disabled
Parameter
Characteristic Single
Thermal Trip 0.1*In
Thermal Alarm 70%
Time constant 1 10
K 1.05
Parameter
I< Status Disabled
I< 1.00*In
tI< 1 S
Parameter
tcold Time Delay 7200 S
Default setting
Default setting
Disabled/ Single
0.1 to 4.00* In step 0.01 In
50 to 100% step 1%
1 to 200min step 1min
1 to 1.5 step 0.01
Default setting
Enabled / Disabled
0.10 to 1.00*In step 0.01*In
0.20s to 100s step 0.01s
Default setting
0 to 14400s step 1s
P50 Agile P153
Setting Range
0s to 200s step 0.01s
0.025 to 1.2 step 0.005
0.01 to 100 step 0.01
DT/IDMT
0.025 to 1.2 step 0.005
0s to 100s step 0.01s
Enabled / Disabled
Setting Range
Setting Range
Setting Range
P153/EN M/B