GE P50 Agile P253 User Manual

P50 Agile P253
7 Protection Parameter Settings
P253/EN M/C
7-21
Sr. No
Parameter
Default setting
Setting Range
This setting determines the enabling/disabling of blocking third stage Negative sequence overcurrent element due to presence of inrush
current.
If I2>3 Blocking and 2nd Harmonic both settings are enabled, then (I2>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.)
2.12.8 CB FAIL Settings
Sr. No
Parameter
Defaults setting
Setting/Ranges
1.
CB Fail Status
Enabled
Disabled/Enabled
This setting is used to enable (activate) or disable (turn off) the CB Fail Status
2. CB Fail Timer 0.1 S 0 to 50s step 0.01s
This setting sets the time delay in which the CB opening must be detected.
3. CBF Reset CB Open + I<
1=I< Only
2=CB Open + I<
3=Prot Reset + I<
4= CB Open
This setting determines the elements that will reset the CB fail timer for CB Failures
4.
I<
1*In
0.05 - 3.2*In step 0.01*In
This setting determines the current threshold, which will reset the CB Fail timer for Overcurrent based protection
5. IN< 1*In 0.05 - 3.2*In step 0.01*In
This setting determines the current threshold, which will reset the CB Fail timer for Earth fault based protection
6. Remove I> Start Disabled Disabled/Enabled
This setting for removing phase over current start signal following CBF operation
7.
Remove IN> Start
Disabled
Disabled/Enabled
This setting for removing earth over current start signal following CBF operation
2.12.9 STALL DETECTION
Sr. No Parameter Defaults setting Setting/Ranges
1. Start Criteria I 52a / I / (52a+I)
This setting determines the start detection criteria
2. Prolonged Start Enabled Disabled/Enabled
This setting enables/disables the prolonged start function
3.
Starting Current
5*In
1 - 5*In step 0.1*In
This setting determines the starting current threshold.
4. Prol. Start Time 15 S 1s to 200s step 0.01s
This setting determines the starting time delay.
5. Stall Rotor Strt Enabled Disabled/Enabled
This setting enables/disables the stalled rotor detection during starting.
6.
Stall Detection
Enabled
Disabled/Enabled
This setting enables/disables the stalled rotor detection function during normal running.
7. Stall Setting 2.5*In 1 to 5*In step 0.1*In
This setting determines the stalled rotor detection current threshold.
8. Stall Time 6 S
1s to 199s step 0.01s
This setting determines the stalled rotor time delay associated with stall rotor current threshold.

GE P50 Agile P253 Specifications

General

Brand	GE
Model	P50 Agile P253
Category	Relays
Language	English