
Operating time characteristics for trip and reset
This function supports definite time delay (DT) and inverse definite minimum time delay (IDMT) with
user-programmable characteristics.
Table. 5.3.2.1 - 52. Icol> operating time setting.
Name
Range
Step
Default
Description
Im/Iset / t
curvepoints
2...10
1
2
Defines the programmable measured current or the set current
versus the expected operating time points.
Point 1(9)
– 2(10)
characteristics
0: Two point steps
1: Two point
interpolate
2: IDMT curve
-
0: Two
point
steps
Defines the operating time calculation between the set current
points.
Imeas / Iset
point 1...10
1.00...40.00xIn
0.01xIn 1.00xIn
Defines the first current point of the curve.
Time point
1...10
0.005...3600.000s 0.01s
1.00s
Defines the first time point of the curve.
Time dial
setting k 1(9)
– 2(10)
0.01...25.00
0.01
1.00
Defines the time multiplier setting for the IDMT curve. Note that this
setting is only visible when the "Point 1(9)–2(10) characteristics"
setting is set to "Two point steps" or "Two point interpolate".
IDMT Const A
1(9) – 2(10)
0.01...25.00
0.01
1.00
Defines the IDMT constant A. Note that this setting is only visible
when the "Point 1(9)–2(10) characteristics" setting is set to "Two
point steps" or "Two point interpolate".
IDMT Const B
1(9) – 2(10)
0.01...25.00
0.01
1.00
Defines the IDMT constant B. Note that this setting is only visible
when the "Point 1(9)–2(10) characteristics" setting is set to "Two
point steps" or "Two point interpolate".
IDMT Const C
1(9) – 2(10)
0.01...25.00
0.01
1.00
Defines the IDMT constant C. Note that this setting is only visible
when the "Point 1(9)–2(10) characteristics" setting is set to "Two
point steps" or "Two point interpolate".
Operating
curve test
(online)
1.00...40.00
0.01
1.00
Allows the testing of the expected operating time with the given
I
meas
/I
set
value with an online relay.
The IDMT curve formula used to calculate the segment timing behaviour is shown below:
Below is an example of the programmable curve settings with three separate operating time segments.
1. RED: I
meas
/I
set
= 1.0…2.0, IDMT IEC-NI, time dial k = 0.05, IDMT constant A = 0.14, IDMT
constant B = 0.02, IDMT constant C = 0.0001.
2. BLUE: I
meas
/I
set
= 2.0…3.0, two point interpolate, time point = 3
3. YELLOW: I
meas
/I
set
= 3.0…5.0, definite time step, the set 3.0 s is held until the I
meas
/I
set
ratio
reaches 5.0, and after that the time point = 4 is used with the time setting 0.1 s.
A
AQ
Q-C213
-C213
Instruction manual
Version: 2.04
101