DEMA CPM 311, User Manual

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Technical Characteristics
Shots 1 ≤ n ≤ 4
Below thresholds can be set independently for each shot.
Phase Thresholds: tI>, tI>>, tI>>>
Earth Thresholds: tIe>, tIe>>, tIe>>>
Auxiliary Timers: tAux1, tAux2.
Below conditions blocks auto-reclose cycles automatically:
* Manual blocking,
* Activation of a “Block ARCL” assigned input,
* CB Charging Spring Failure, CB Trip Time Error, CB Close Time Error,
* CB Pole Failure,
* Activation of a protection function during Inhibit Time,
* Manual closing of circuit breaker.
4 programmable dead time setting, abbreviated as tD1, tD2, tD3 and tD4.
Setting range: (0.01-300) s, step: 0.01 s
Reset Delay Setting tR: (0.2-600) s, step: 0.01 s
Inhibit Time Delay tIN: (0.2-600) s, step: 0.01 s
Thresholds used with Cold Load Pickup I>, I>>, I>>>, I
e
>, I
e
>>, I
e
>>>, I
2
>, I
2
>>.
Threshold Setting Range %(20-500), in steps of %1
Delay Setting Range (0.1-3600) s, in steps of 0.1 s
Programmable Output Assignment
Options Trip, I>, I>>, I>>>, tI>, tI>>, tI>>>, Ie>, Ie>>, Ie>>>, tIe>, tIe>>, tIe>>>,
tI<, tI2>, tI2>>, Trip Θ, Thermal Alarm Θ, CB Alarm, 52 Failure, Broken
Conductor, CB Failure, CB Close, tAux1, tAux2, ARCL Running, ARCL Blocked,
Buchholz Alarm, Buchholz Trip, Temp. Alarm, Temp. Trip.
Functions available to assign to Trip
Relay
tI>, tI>>, tI>>>, tI
e
>, tI
e
>>, tI
e
>>>, tI<, tI
2
>, tI
2
>>, Thermal Trip Θ, Broken
Conductor, tAux1, tAux2, Buchholz, Temperature, Pressure.
Functions available to assign to
Programmable Inputs Passive, Unlatch, 52 a, 52 b, CB Position, Start Aux1, Start tAux2, Blocking Sel.1,
Delaying Sel.1, Start Wave Record, Cold Load Pickup, Spring Failure, Change
Settings Group, Block ARCL, Reset %Θ, Trip Circuit Supervision, Reset RL1-RL6,
Reset LED, Pressure Trip, Buchholz Alarm, Buchholz Trip, Temperature Alarm,
Temperature Trip, Blocking Sel.2, Delaying Sel.2.
Blocking Logic Selectivity Groups 2 groups, 1 setting for each group.
Trigger Options
tI>, tI>>, tI>>>, tI
e
>, tI
e
>>, tI
e
>>>, tI<, tI
2
>, tI
2
>>, broken conductor, tAux1,
tAux2.
Current Sensing Threshold Range
I< : (0.02-1) I
n
, in steps of 0.01 I
n.
Delay Setting Range tCBF : (0.1-10) s, in steps of 0.01 s.
Quantity of timers 2 independent auxiliary timers.
Trigger Options Via programmed input.
Setting Range tAux1 & tAux2 : (0-600) s, in steps of 0.01 s
2.8.7 Auxiliary Timer Settings
2.8 Automatic Control Functions
2.8.1 Cold Load Pickup
2.8.2 Programmable Outputs Settings
2.8.3 Trip Settings
2.8.5 Blocking Logic Settings
2.8.6 Circuit Breaker Pole Failure Settings [ANSI 50BF]
2.8.4 Programmable Input Settings
2.7 Multi-shot Auto-reclose Function (ARCL) [ANSI 79]
Auto-reclose Triggers
Auto-reclose Blocking Conditions
Dead Time and Setting Ranges