2.8.10 Cold Load Pickup
Sr. No Parameter Default setting Setting Range
1. tcold Time Delay 7200 00000 to 14400s step 1s
This setting determines the time the load needs to be de-energized (dead time) before the new settings are applied.
2. tclp Time Delay 7200 00000 to 14400s step 1s
This setting controls the period of time for which the relevant overcurrent and earth fault settings are altered or inhibited following circuit
breaker closure.
3. I>1 Status Enabled Block / Enabled
The I>1 status cells have two setting options, "Enable" and "Block". Selecting "Enable" for a particular stage means that the current and
time settings programmed in the following cells will be those that are adopted during the "tclp" time. Selecting "Block" simply blocks the
relevant protection stage during the "tclp" time. It also removes the following current and time settings for that stage from the menu.
4. I>1 Current Set 1.5*In 0.20 to 4.00*In step 0.01*In
This setting determines the new pick-up setting for first stage overcurrent element during the tclp time delay.
5. I>1 Time Delay 0.01 000.00 to 100.00s step 0.01s
This setting determines the new operating time delay for the first stage definite time overcurrent element during the tclp time.
6. I>1 TMS 0.1 0.025 to 1.200 in step 0.005
This setting determines the new time multiplier setting for the first stage element to adjust the operating time of the IEC IDMT
characteristic during the tclp time.
7. I>2 Status Enabled Block / Enabled
The I>2 status cells have two setting options, "Enable" and "Block". Selecting "Enable" for a particular stage means that the current and
time settings programmed in the following cells will be those that are adopted during the "tclp" time. Selecting "Block" simply blocks the
relevant protection stage during the "tclp" time. It also removes the following current and time settings for that stage from the menu.
8. I>2 Current Set 1.5*In 0.20 to 4.00*In step 0.01*In
This setting determines the new pick-up setting for second stage overcurrent element during the tclp time delay.
9. I>2 Time Delay 0.01 000.00 to 100.00s in step 0.01s
This setting determines the new operating time delay for the second stage definite time overcurrent element during the tclp time.
10. I>2 TMS 0.1 0.025 to 1.200 in step 0.005
This setting determines the new time multiplier setting for the second stage element to adjust the operating time of the IEC IDMT
characteristic during the tclp time.
11. I>3 Status Enabled Block / Enabled
The I>3 status cells have two setting options, "Enabled" and "Block". Selecting "Enable" for a particular stage means that the current
and time settings programmed in the following cells will be those that are adopted during the "tclp" time. Selecting "Block" simply blocks
the relevant protection stage during the "tclp" time. It also removes the following current and time settings for that stage from the menu
12. I>3 Current Set 1.5*In 0.20 to 4.00*In step 0.01*In
This setting determines the new pick-up setting for third stage overcurrent element during the tclp time delay.
13. I>3 Time Delay 0.01 000.00 to 100.00s step 0.01s
This setting determines the new operating time delay for the third stage definite time overcurrent element during the tclp time.
14. I>3 TMS 0.1 0.025 to 1.200 in step 0.005
This setting determines the new time multiplier setting for the third stage element to adjust the operating time of the IEC IDMT
characteristic during the tclp time.
15. IN>1 Status Enabled Block / Enabled
The IN>1 status cells have two setting options, "Enabled" and "Block". Selecting "Enable" for a particular stage means that the current
and time settings programmed in the following cells will be those that are adopted during the "tclp" time. Selecting "Block" simply blocks
the relevant protection stage during the "tclp" time. It also removes the following current and time settings for that stage from the menu.
16. IN>1 Current Set 0.2*In 0.20 to 4.00 step 0.01*In
This setting determines the new pick-up setting for first stage earth fault element during the tclp time delay.
17. IN>1 Time Delay 0.01 000.00 to 200s step 0.01s
This setting determines the new operating time delay for the first stage definite time element during the tclp time.
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