ABB Tmax T7 Operating Instructions Manual page 38

Current
protections
G
(4) (6)
      
(t=k/I )
2
Gext
(6)
      
(t=k)
Gext
(6)
      
(t=k/I )
2
Rc (Idn)
      
U
      
(t=k)
OT
      
(temp=k)
Iinst
      
UV
      
(t=k)
OV
      
(t=k)
RV
      
(t=k)
RP
      
(t=k)
UF
      
OF
      
LC1/LC2
      
load Control
Warning Iw        0,3÷10I
MM
(7)
      
(t=k)
The minimum value of this trip is 1s regardless of the type of curve set
(1)
(self-protection).
These tolerances are based on the following assumptions:
(2)
- energized protection release in service conditions (without start-up) with
2 or 3 phases energized and/or in the presence of auxiliary supply.
- Preset trip time ≥ 100 ms.
- Temperatura e correnti entro i limiti di funzionamento.
The interval of time for which the protection is activated can be selected
(3)
via Ekip Connect, and is calculated from the moment the CB closes.
Protection G can be automatically disabled by the release on the basis of
(4)
the current measured. Per le casistiche 1.6.8.
Max trip time.
(5)
La soglia minima delle protezioni G e Gext, in assenza di Vaux diventa
(6)
0,2In.
Available with PR332/P MM.
(7)
B0431
Mod.
Trip Threshold
0,1xIn ≤ I ≤1xIn
4
step 0,02xIn
0,2xIn ≤ I ≤
4 Start-Up
1x I
4
0,1xIn ≤ I ≤1xIn
4
step 0,02xIn
0,1xIn ≤ I ≤1xIn
4
step 0,02xIn
Idn =3-5-7-10-20-
30A
2% ≤ I ≤ 90%
6
step 1%
Fixed, defined by
ABB
Automatic, defined
by ABB
0,5xUn ≤ U ≤
8
0,95xUn
step 0,01xUn
1,05xUn ≤ U ≤
9
1,2xUn
step 0,01xUn
0,1xUn ≤ U ≤
10
0,4xUn
step 0,05 Un
- 0,3xPn ≤ P ≤
11
-0,1xPn
step 0,02 Pn
0,9fn ≤ f ≤ 0,99fn
12
step 0,01 fn
1,01fn ≤ f ≤ 1,1fn
13
step 0,01 fn
50%÷100% step
1%xI
1
step 0,05xI
n n
1,5xIn ≤ I ≤ 4xIn
5
step 0,1xIn
B1751
Trip time
0,1s ≤ t ≤ 1s, step 0,05s
4
(minimum trip time)
@I >4In
f
@I >I
f 4
0,1s ≤ t ≤ 1s, step 0,05 s
4
0,1s ≤ t ≤ 30s, step
4 start-up
0,02s
0,04s ≤ t ≤ 0,2s, step 0,01s
4 sel
0,1s ≤ t ≤ 1s, step 0,05s
4
(minimum trip time)
@I >4In
f
0,06-0,1-0,2-0,3-0,4-0,5-
0,8s
(3)
0,5s ≤ t ≤ 60s, step 0,5s
6
Instantaneous
Instantaneous
0,1 s ≤ t ≤ 5 s, step 0,1 s
8
0,1 s ≤ t ≤ 5 s, step 0,1 s
9
0,5 s ≤ t ≤ 30 s, step 0,5 s
10
0,5 s ≤ t ≤ 25 s, step 0,1 s
11
0,5 s ≤ t ≤ 3 s, step 0,1 s
12
0,5 s ≤ t ≤ 3 s, step 0,1 s
13
≤ 30 ms
@ I >I
f 5
For all cases not covered by the above hypotheses, the following tolerance
values apply:
Protection Trip threshold
Release between
L
1,05 e 1,25 x I1
S
I
G
Others
Apparatus
Emax X1-Tmax T7-Tmax T8
1SDH000587R0002
Doc N°
Trip
Trip time
threshold
tolerance
tolerance
(2)
±7% ±15%
The best of the
±7% two data±10%
or 40ms
±7% ±15%
-20% ÷ 0
0,06s
The best of the
±10% two data±10%
or 40ms
± 5°C
The best of the
± 5% two data±10%
or 40ms
The best of the
± 5% two data±10%
or 40ms
The best of the
± 5% two data±10%
or 40ms
The best of the
± 5% two data± 10%
o 40 ms
The best of the
± 5% two data±10%
or 40ms
The best of the
± 5% two data±10%
or 40ms
± 10% 10÷40 ms
±10%
Trip time
± 20%
± 10% ± 20%
± 15% ≤ 60ms
± 10% ± 20%
± 20%
(2)
(5)
Scale
Page No
38/66