Thytronic NA11, Manual

Page: 18 / 190

18
18 NA11 - Manual - 02 - 2009 TECHNICAL DATA
10.0...100.0 s (step 0.1 s)
I > Reset time delay ( t >
RES
) 0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Defi nite time
50/51 First threshold defi nite time ( I >
def
) 0.100...35.0 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...9.99 I
n
(step 0.01 I
n
)
10.0...35.0 I
n
(step 0.1 I
n
)
I >
def
within CLP ( I
CLP>def
) 0.100...35.0 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...9.99 I
n
(step 0.01 I
n
)
10.0...35.0 I
n
(step 0.1 I
n
)
I >
def
Operating time ( t >
def
) 0.04...200.00 s
0.04...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...200 s (step 1 s)
Inverse time
[1]
50/51 First threshold inverse time ( I >
inv
) 0.100...20.00 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...20.00 I
n
(step 0.01 I
n
)
I >
inv
within CLP ( I
CLP>inv
) 0.100...20.00 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...20.00 I
n
(step 0.01 I
n
)
I >
inv
Operating time ( t >
inv
) 0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
I>> Element
I >> Curve type ( I>>
Curve
) DEFINITE or I
2
t
I
CLP
>> Activation time ( t
CLP>>
) 0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
I >> Reset time delay ( t >>
RES
) 0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Defi nite time
50/51 Second threshold defi nite time ( I >>
def
) 0.100...35.0 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...9.99 I
n
(step 0.01 I
n
)
10.0...35.0 I
n
(step 0.1 I
n
)
I >>
def
within CLP ( I
CLP>>def
) 0.100...35.0 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...9.99 I
n
(step 0.01 I
n
)
10.0...35.0 I
n
(step 0.1 I
n
)
I >>
def
Operating time ( t >>
def
) 0.03...10.00 s (step 0.01 s)
Inverse time
50/51 Second threshold inverse time ( I >>
inv
) 0.100...20.00 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...20.00 I
n
(step 0.01 I
n
)
I >>
inv
within CLP ( I
CLP>>inv
) 0.100...20.00 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...20.00 I
n
(step 0.01 I
n
)
I >>
inv
Operating time ( t >>
inv
) 0.02...10.00 s (step 0.01 s)
Note 1
Standard Inverse Time (IEC 255-3/BS142 type A or SIT): t = 0.14 · t>
inv
/ [(I/I>
inv
)
0.02
- 1]
Very Inverse Time (IEC 255-3/BS142 type B or VIT): t = 13.5 · t>
inv
/ [(I/I>
inv
) - 1]
Extremely Inverse Time (IEC 255-3/BS142 type C or EIT): t = 80 · t>
inv
/ [(I/I>
inv
)
2
- 1]
Moderately Inverse (ANSI/IEEE type MI): t = t>
inv
· {0.01 / [(I/I>
inv
)
0.02
- 1] + 0.023}
Very Inverse (ANSI/IEEE type VI): t = t>
inv
· {3.922 / [(I/I>
inv
)
2
- 1] + 0.098}
Extremely Inverse (ANSI/IEEE type EI): t = t>
inv
· {5.64 / [(I/I>
inv
)
2
- 1] + 0.024}
I-squared-t (I
2
t = K): t = 16 · t>
inv
/ (I/I>
inv
)
2
Electromechanical (EM): t = 0.28 · t>
inv
/ [-0.236 · (I/I>
inv
)
-1
+ 0.339]
RECTIFIER (RI): t = 2351 · t>
inv
/ [(I/I>
inv
)
5.6
- 1]
t : operate time
I>
inv
: pickup value
t>
inv
: operate time setting
Asymptotic reference value: 1.1 I >
inv
Minimum operate time: 0.1 s
Equation is valid for 1.1 ≤ I/I>
inv
≤ 20
With I>
inv
pickup ≥ 2.5 I
n
, the upper limit is 35 I
n