TECHNICAL DATA
21
NVA100X-D - Manual - 02 - 2016
XC2-XD2 Element
Absolute center coordinate (X
C2
)
0.00...4.50
Z
nf
(step 0.01 Z
nf
)
Diameter (
X
D2
)
0.20...5.00
Z
nf
(step 0.01 Z
nf
)
Operating time
(
t
XC2XD2
) 0.07...100.0
s
0.07...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Reset time delay (
t
XC2XD2-RES
)
0.0...10.0 s
Pickup time
≤
0.04 s
Dropout
ratio
0.95...0.98
Dropout time
≤
0.05 s
Overshoot
time
0.04
s
Pickup
accuracy ±
0.5% on current measures
±
0.5% on voltage measures
Operate time accuracy
5% or ± 10 ms
Negative sequence overcurrent for Generator protection - 46G
I
2AL
> Element
Alarm threshold defi nite 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)
10.0...100.0 s (step 0.1 s)
I
2
>>
Element
Inverse time
[1]
Trip threshold inverse time (
I
2
>>
inv
)
0.05...0.50
I
B
(step 0.01
I
B
)
Heating thermal time constant (
K
heat
)
0.1...40.0 s (step 0.1 s)
Cooling thermal time constant (
K
cool
)
0.1...40.0 s (step 0.1 s)
Minimum operating time (
t
2MIN
) 0.07...100.0
s
0.07...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Maximum operating time (
t
2MAX
)
500...2000 s (step 1 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 I2≥ 0.5 In
Operate time accuracy
5% or ± 10 ms
Negative sequence overcurrent for Motor protection - 46M
I
2
> Element
Curve type (
I>
Curve
)
DEFINITE,
IEC/BS A, B, C, ANSI/IEEE MI, VI, EI
I
2
t or EM
CLP mode (
I
2CLP
>
Mode)
OFF/ON-Element blocking/ON-Change setting
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)
Defi nite time
First threshold defi nite time (
I
2
>
def
)
0.03...1.00
I
B
(step 0.01
I
B
)
First threshold
within CLP (
I
2CLP>def
)
0.03...5.00
I
B
(step 0.01
I
B
)
Operating 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)
Note 1 Inverse time with I
2
≥
I
2
>>
inv
:
t = K
heat
/(I
2
/I
B
)
2
Inverse time with I
2
≤
I
2
>>
inv
:
t = K
cool
/(I
2
>>
/I
B
)
2
t
:
operate time
I
2
:
negative sequence current
I
B
:
base current
K
heat
:
heating thermal time constant (operate time with negative sequence current = I
B
)
K
cool
: cooling thermal time constant
Minimum operate time:
t
2MIN
Maximum operate time:
t
2MAX
Range: 1 ≤ I
2
/I
B
≤ 100
Upper metering limit:
30
I
n
—
—
