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Technical data
Overload stage I
>
b
Starting current I
>
b
Starting time
Operation characteristic
Time multiplier k
Resetting time
Drop-off/pick-up ratio
Operation time accuracy
(k = 1.0 and I
> = 0.50...1.50 x I
b
Operation accuracy
Shortest possible trip time
Overload stage I
>
a
Starting current I
>
a
Operating time
Resetting time
Drop-off/pick-up ratio
Operation time accuracy
Operation accuracy
Undercurrent stage I<
Starting current I<
Operating time
Reconnection time
Pulse shaped tripping signal, pulse length
Pick-up/drop-off ratio
Operation time accuracy
Operation accuracy
Phase unbalance ∆I
1
Starting current ∆I
>
1
Operating time
Resetting time
Drop-off/pick-up ratio
Operation time accuracy (∆I
Operation accuracy (∆I
cs
Phase unbalance ∆I
2
Starting current ∆I
>
2
Starting time
Operation characteristic
Time multiplier k
∆2
Resetting time
Drop-off/pick-up ratio
Operation time accuracy of theoretical
characteristic (∆I
= 0)
cs
Operation accuracy (∆I
cs
Shortest possible trip time
Setting of compensation
Operation accuracy
*) minimum recommended: 3.0% ∆I
)
n
>, Stage 1
= 0)
cs
= 0)
>, Stage 2
= 0)
n
0.30...1.50 x I
n
<80 ms
ANSI inverse
0.2...2.0
<100 ms
>0.95
±10% of theoretical value or ±50 ms, see Fig. 5
±3% of set value
~100 ms
80...120 % x I
>
b
0.50...100 min
<250 ms
>0.95
±2% of set value
±3% of set value
0.10...0.70 x I
n
1.0...100 s
0.50...100 min
~200 ms
<1.1
±2% of set value or ±75 ms
±3% of set value within range 0.25...0.70 x I
1.0...100% ∆I
*)
n
1.0...300 s
<100 ms
>0.90
±2% of set value or ±75 ms
±3% of set value within range 1.5...100% ∆I
2.0...80.0% ∆I
*)
n
<70 ms
Inverse time
0.1...1.0
<100 ms
>0.90
7.5% or ±35 ms
±3% of set value
~100 ms
0.0...20.0% ∆I
n
<3% of ∆I
n
n
n
21
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