Thytronic XMR-V 4V - Negative Sequence Overcurrent for Motor Protection - 46 M

28
TECHNICAL DATA
10.0...100.0 s (step 0.1 s)
I
2
>> Element
Inverse time
18
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 I
2
≥ 0.5 I
n
Operate time accuracy 5% ± 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)
Definite time
First threshold definite time (I
2
>
def
) 0.03...1.00 I
B
(step 0.01 I
B
)
I
2
>
def
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)
Inverse time
19
First threshold inverse time (I
2
>
inv
) 0.03...1.00 I
B
(step 0.01 I
B
)
I
2
>
inv
within CLP (I
2CLP>inv
) 0.03...5.00 I
B
(step 0.01 I
B
)
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 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)
Reset time delay (t
2
>>
RES
) 0.00...100.0 s (step 0.1 s)
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Definite time
Second threshold definite time (I
2
>>
def
) 0.10...1.00 I
B
(step 0.01 I
B
)
I
2
>>
def
within CLP (I
2CLP>>def
) 0.10...5.00 I
B
(step 0.01 I
B
)
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 I
n
Operate time accuracy 5% ± 10 ms
Note 18 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
XMR-D EQUIPMENT MANUAL
Ed. 2.9 - 02/2021