2.8.5 I>3 Function
Sr. No Parameter Default setting Setting Range
1. IN>1 Function IEC S Inverse Disabled / DT / IEC S Inverse / S Inverse 1.3Sec / IEC V Inverse
/ IEC E Inverse / UK LT Inverse / IEEE M Inverse / IEEE V Inverse
/ IEEE E Inverse / US Inverse / US ST Inverse
This setting determines the tripping characteristic for the first stage earth fault element.
2. IN >1 Current Set 1*In If DT 0.10 to 35.00*In step 0.01*In
If IDMT then 0.10 to 2.50*In step 0.01*In
This setting determines Pick-up setting for first stage earth fault element.
3. IN >1 Time Delay 1 000.00 to 200.00s step 0.01s
This setting determines the time-delay for the definite time setting, if selected for first stage earth fault element.
4. IN >1 TMS 1 0.025 to 1.200 step 0.005
This setting determines the new time multiplier setting to adjust the operating time of the IEC IDMT characteristic.
5. IN >1 Time Dial 1 000.01 to 100.00 step 0.01
This setting determines the time multiplier setting to adjust the operating time of the IEEE IDMT curves.
6. IN >1 tRESET 0 000.00 to 100.00s step 0.01s
This setting determines the reset/release time for all type of curves.
7. IN >1 2H Blocking Disabled Enabled / Disabled
This setting determines the enabling/disabling of blocking first stage of Earth fault element due to presence of inrush current.
If IN>1 Blocking and 2nd Harmonic both setting are enabled, then (IN>1) 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.)
2.8.6 I>3 Function
Sr. No Parameter Default setting Setting Range
1. IN>2 Function IEC S Inverse Disabled / DT / IEC S Inverse / S Inverse 1.3Sec / IEC V
Inverse / IEC E Inverse / UK LT Inverse / IEEE M Inverse /
IEEE V Inverse / IEEE E Inverse / US Inverse / US ST Inverse
This setting determines the tripping characteristic for the second stage earth fault element.
2. IN >2 Current Set 1*In If DT 0.10 to 35.00*In step 0.01*In
If IDMT then 0.10 to 2.50*In step 0.01*In
This setting determines pick-up setting for second stage earth fault element.
3. IN >2 Time Delay 1 000.00 to 200.00s step 0.01s
This setting determines the time-delay for the definite time setting, if selected for second stage earth fault element.
4. IN >2 TMS 1 0.025 to 1.200 step 0.005
This setting determines the time multiplier setting to adjust the operating time of the IEC IDMT characteristic.
5. IN >2 Time Dial 1 000.01 to 100.00 step 0.01
This setting determines the time multiplier setting to adjust the operating time of the IEEE IDMT curves.
6. IN >2 tRESET 0 000.00 to 100.00s step 0.01s
This setting determines the reset/release time for definite time reset characteristic.
7. IN >2 2H Blocking Disabled Enabled / Disabled
This setting determines the enabling/disabling of blocking second stage of Earth fault element due to presence of inrush current.
If IN>2 Blocking and 2nd Harmonic both setting are enabled, then (IN>2) 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.)
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