IG-150-EN version 04; 03/10/16
81
General instructions
ekor.rps
Protection functions. Description and settings
4.12.2. Settings (table 0, single)
They are accessible through keyboard/display in "table 0" - "
special protections" - "cold load" , or through console on the
screen “overcurrent prot.-cold load” and they are the ones
which replace the standard functions when that condition
is given:
1. Phase time unit
2. Neutral time unit
3. Phase instantaneous unit
4. Neutral instantaneous unit
5. Sensitive neutral time unit
6. Sensitive neutral instantaneous unit
They are also under the name "cold load pickup" the ones
which define the function activity range:
1. “Cold load” enable: YES/NO.
2. Cold load time: 0 to 10 000 s. In console “cold load time”.
3. Operating time of “cold load” settings: 0.1 to 3600 s
(1 hour) with 0.01 s resolution in console “duty time”.
During this time, after coming back the current (>0.2 A)
all the overcurrent protection settings (phase, neutral
and sensitive neutral) stop being the corresponding
to the “active table” and become the corresponding to
“cold load”: Enabling actions, pickups, curves, times, etc.
Remarks
The function “cold load” is de-activated while the unit is
on “ongoing cycle”, this means while the closing control is
assumed by the reclosing function.
The function “cold load” does not operate on the “high
current lockout” settings.
0,2 A
I
0,1 A
1
4
5
2
3
1
Usual settings
2
Cold lood settings
3
Usual settings
4
Cold lood time
5
Actuation time
Figure 4.18.
Example with breaker opening and closure
0,2 A
I
0,1 A
1
4
5
2
3
1
Usual settings
2
Cold lood settings
3
Usual settings
4
Cold lood time
5
Actuation time
Figure 4.19.
Example with very low load
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