Thytronic XMR-D - Negative Sequence Overcurrent for Generator Protection - 46 G

TECHNICAL DATA
27
Reset time delay (t
2
>
RES
) 0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1
Definite time
First threshold definite time (I
2
>
def
) 0.100...10.00 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...10.00 I
n
(step 0.01 I
n
)
I
2
>
def
within CLP (I
2CLP>def
) 0.100...10.00 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...10.00 I
n
(step 0.01 I
n
)
perating time (t
2
>
def
) 0.03...200 s
0.03...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...200 s (step 1 s)
Inverse time
17
First threshold inverse time (I
2
>
inv
) 0.100...10.00 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...5.00 I
n
(step 0.01 I
n
)
I
2
>
inv
within CLP (I
2CLP>inv
) 0.100...10.00 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...10.00 I
n
(step 0.01 I
n
)
Operating time (t
2
>
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
2
>> Element
CLP operating mode (I
2CLP
>> Mode) OFF/ON-Block/ON-Setting change
CLP activation time (t
2CLP>>
) 0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Reset time delay (t
2
>>
RES
) 0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Definite time for CTs versions
Second threshold definite time (I
2
>>
def
) 0.100...40.00 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...40.00 I
n
(step 0.01 I
n
)
I
2
>>
def
within CLP (I
2CLP>>def
) 0.100...40.00 I
n
0.100...0.999 I
n
(step 0.001 I
n
)
1.00...40.00 I
n
(step 0.01 I
n
)
Operating time (t
2
>>
def
) 0.03...10.00 s (step 0.01 s)
Definite time for ThySensor versions
Second threshold definite time (I
2
>>
def
) 0.010...30.00 I
n
0.010...0.999 I
n
(step 0.001 I
n
)
1.00...30.00 I
n
(step 0.01 I
n
)
I
2
>>
def
within CLP (I
2CLP>>def
) 0.010...30.0 I
n
0.010...0.999 I
n
(step 0.001 I
n
)
1.00...30.00 I
n
(step 0.01 I
n
)
Operating time (t
2
>>
def
) 0.03...10.00 s (step 0.01 s)
Pickup time ≤ 0.04 s
Dropout ratio 0.95...0.98
Dropout time ≤ 0.05 s
Overshoot time 0.04 s
Pickup accuracy 1% with I
2
≥ 0.5 In
Operate time accuracy 5% ± 10 ms
— Negative sequence overcurrent for Generator protection - 46G
I
2AL
> Element
Alarm threshold definite time (I
2AL
>
def
) 0.03...0.50 I
B
(step 0.01 I
B
)
Operating time (t
I2AL
>
def
) 0.07...100.0 s
0.07...9.99 s (step 0.01 s)
Note 17 Standard Inverse Time (IEC 255-3/BS142 type A or SIT): t = 0.14 · t
2
>
inv
/ [(I
2
/I
2
>
inv
)
0.02
- 1]
Very Inverse Time (IEC 255-3/BS142 type B or VIT): t = 13.5 · t
2
>
inv
/ [(I
2
/I
2
>
inv
) - 1]
Extremely Inverse Time (IEC 255-3/BS142 type C or EIT): t = 80 · t
2
>
inv
/ [(I
2
/I
2
>
inv
)
2
- 1]
Moderately Inverse (ANSI/IEEE type MI): t = t
2
>
inv
· {0.01 / [(I
2
/I
2
>
inv
)
0.02
- 1] + 0.023}
Very Inverse (ANSI/IEEE type VI): t = t
2
>
inv
· {3.922 / [(I
2
/I
2
>
inv
)
2
- 1] + 0.098}
Extremely Inverse (ANSI/IEEE type EI): t = t
2
>
inv
· {5.64 / [(I
2
/I
2
>
inv
)
2
- 1] + 0.024}
I-squared-t (I
2
t = K): t = 16 · t
2
>
inv
/ (I
2
/I
2
>
inv
)
2
Electromechanical (EM): t = 0.28 · t
2
>
inv
/ [-0.236 · (I
2
/I
2
>
inv
)
-1
+ 0.339]
t: operate time
I>
inv
: pickup value
t>
inv
: operate time setting
Asymptotic reference value: 1.1 I>
nv
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 50 I
n
XMR-D EQUIPMENT MANUAL
Ed. 2.9 - 02/2021