ADR233B
Ref ID : ADR233B/IM/SS
Rev No. : 05
Page No. : 175 of 479
Inverse / US Inverse / US ST Inverse
This setting is to set the tripping characteristic for the first stage of phase over current element.
3. IP>1 1.00 A*In If DT 0.05 to 35.00*In in step of 0.01*In
If IDMT 0.05 to 4.00*In in step of
0.01*In
This setting is to set the Pick-up setting for first stage of phase over current element.
4. tIP>1 DT Delay 0.00 S 0 to 1899.9s in step of 0.01s
This setting is to set the time-delay for the Definite Time (DT) setting
5. IP>1 TMS 1.000 0.01 to 1.500 in step of 0.01
This setting is to set the time multiplier setting to adjust the operating time of the IEC / UK IDMT
characteristic.
6. IP>1 Time Dial 1.00 0.01 to 100.00 in step of 0.01
This setting is to set the time dial setting to adjust the operating time of the IEEE / US IDMT
characteristic.
7. IP>1 D/O Char DT Disabled / DT / IDMT
This setting is to set the reset/release characteristic.
8. tIP>1 tD/O Delay 1.00 S 0s to 100s in step of 0.01s
This setting is to set the reset/release time for Definite Time (DT) and all IDMT curve
9. IP>1 D/O TMS 1.000 0.025 to 1.2 in step of 0.005
This setting is to set the reset/release time multiplier setting for IEEE IDMT characteristic
10. IP>1 2H BLK Disabled Disabled / Enabled
This setting is to
enable (activate) or disable (turn off) the first stage over current element to block the trip
command in presence of inrush current.
If IP>1 Blocking and 2nd Harmonic both setting are enabled.
This function block the (IP>1) trip command in case 2nd harmonics/fundamental in any phase is above
the 2nd Hr. Threshold and fundamental current is below I> UB2H 2H setting (set in Inrush Blocking
Menu.)
11. IP>1 2H Thresh 20 % 5 % to 70% in step of 1%
This setting is to specify the 2nd Harm Threshold value, if the level of 2nd harmonic/fundamental in any
phase current exceeds the setting, the protection function which is enabled with this function will be
blocked.
12. I>UB2H 4 A *In 4 to 32*In in step of 0.01*In
The 2nd harmonic blocking is applied only when the fundamental current is above 2nd Harm Thresh and
below I> UB2H setting. The reset levels are 95% of these thresholds
Note: Phase OC settings for IP>2 & IP>3 of Winding 1 and Phase OC settings for IP>1, IP>2 & IP>3
of Winding 2 are similar to Phase OC IP>1 settings.
6.8.5 Ground OC
Sr. No Parameter Defaults setting Settings / Ranges
1.
IE>1 Enable Disabled Disable/Enabled
To Next Page
Loading...
