L2234
Emax
34/158
Model
Scale
Page No.
Doc. No.
Apparatus
1SDH000460R0002
L2778
(1)
The minimum value of this trip is 1s regardless of the type of curve set
(self-protection).
(2)
These tolerances apply in the following conditions:
- self-powered relay at full power (without start-up)
- presence of auxiliary power supply
- two-phase or three-phase power supply
- trip time setting
≥
100ms
For all cases not covered by the above hypotheses, the following tolerances apply:
Protections
Trip threshold
Trip time
L
Release between 1.05 and 1.25 x I1
± 20%
S
± 10%
± 20%
I
± 15%
≤
60ms
G
± 10%
± 20%
Others
± 20%
Disabling
Trip threshold
Trip time
Trip
threshold
tolerance
(2)
Protection
Trip
time
tolerance
(2)
L
I1 =
0.4 - 0.425 - 0.45 - 0.475 - 0.5 -
Release between
(t=k/I
2
)
0.525 - 0.55 - 0.575 - 0.6 - 0.625 -
t1 = 3 - 12 - 24 - 36 - 48 - 72
1.05 and 1.2 x I1 ± 10% I
g
≤
6 x In
0.65 - 0.675 - 0,7 - 0.725 - 0.75 -
108 - 144 s
(1)
± 20% I
g
>
6 x In
0.775 - 0.8 - 0.825 - 0.85 - 0.875 -
@ 3 I1
0.9 - 0.925 - 0.975 - 1 x In
S
I2 =
1 - 1.5 - 2 - 2.5 - 3 - 3.5 - 4 - 5 -
Where I > I2
± 7% I
g
≤
6 x In
The best of the two data:
(t=k)
6 - 7 - 8 - 8.5 - 9 - 9.5 - 10 x In
t2 = 0.1 - 0.2 - 0.3 - 0.4 - 0.5 - 0.6 ± 10% I
g
>6 x In
± 10% or ± 40 ms
0.7 - 0.8 s
S
I2 =
1 - 1.5 - 2 - 2.5 - 3 - 3.5 - 4 - 5 -
t2 = 0.1 - 0.2 - 0.3 - 0.4 - 0.5 - 0.6 ± 7% I
g
≤
6 x In ± 15% I
g
≤
6 x In
(t=k/I
2
)
6 - 7 - 8 - 8.5 - 9 - 9.5 - 10 x In
0.7 - 0.8 s
± 10% I
g
>6 x In ± 20% I
g
>6 x In
@ 10 In
I
I3 =
1.5 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 -
≤
30 ms
± 10%
(t=k)
11 - 12 - 13 - 14 - 15 x In
G
I4 =
0.2 - 0.3 - 0.4 - 0.6 - 0.8 - 0.9 -
Where I > I4
± 7%
The best of the two data:
(t=k)
1 x In
t4 = 0.1 - 0.2 - 0.4 - 0.8 s
± 10% or ± 40 ms
t4 = 0.1@ 4.47 I4
G
I4 =
0.2 - 0.3 - 0.4 - 0.6 - 0.8 - 0.9 - t4 = 0.2@ 3.16 I4
± 7%
± 15%
(t=k/I
2
)
1 x In
t4 = 0.4@ 2.24 I4
t4 = 0.8@ 1.58 I4
I inst
Automatic, defined by SACE
Instantaneous
12.2.7 Summary table of protections
12.2.8
Table of measurements
Type of measurement
Standard operation range
Range of values measured by the relay
Range
Tolerance %
Phase and neutral current
0,05 ... 16 In
0,3 ... 6 In
± 1,5
Earth fault current
0,05 ... 4 In
0,3 ... 4 In
± 1,5