Thytronic XMR-T - 3.8 Control and Monitoring

28
TECHNICAL DATA
— Differential - 87G-87M-87T
Harmonic restraint (87T)
87T Second harmonic restraint threshold (
2nd-REST> ) 10...80% I
d
(step 1% I
d
)
87T Fifth harmonic restraint threshold (
5th-REST> ) 10...80% I
d
(step 1% I
d
)
87T Harmonic restraint intentional reset time delay (t
H-RES
) 0.00...10.00 s (step 0.01 s)
87T Cross phase harmonic restraint enable (C
ROSS H-RES
) ON/OFF
CT saturation detector (87M-87G-87T)
Saturation detector enable (S
at-Det
) ON/OFF
Saturation detector intentional reset time delay (t
Sat-Det-RES
) 0.00...0.50 s (step 0.01 s)
I
d
> Element (87M-87G-87T)
First threshold (
I
d
>) 0.05...2.00 I
nref
(step 0.01 I
nref
)
First stretch slope percentage (
K1 ) 10...50% (step 1 %)
Second branch slope percentage (
K2 ) 25...100% (step 1 %)
Second branch intersection with vertical axis (
Q ) 0.00...3.00 I
nref
(step 0.01 I
nref
)
First threshold operating time
I
d
> (t
d
>) 0.04 s
I
d
>> Element (87M-87G-87T)
Second threshold (
I
d
>>) 0.50...30.00 I
nref
(step 1.00 I
nref
)
Second threshold operating time
I
d
>> (t
d
>>) 0.03 s
3.8 CONTROL AND MONITORING
— Second harmonic restraint - 2ndh-REST (H, L, T)
Second harmonic restraint threshold (I
2ndh
>) 10...50 % (step 1 %)
Reset time delay (t
2ndh>RES)
0...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Pickup time ≤ 0.04 s
Dropout ratio 0.95...0.98
Dropout time ≤ 0.05 s
Overshoot time 0.04 s
Pickup accuracy I
2ndh
> ± 1% with 0.1 I
n
± 0.5% with 1 I
n
Operate time accuracy 5% ± 10 ms
— Trip Circuit Supervision - 74TCS (H, L, T)
Operate time:
• One binary input supervision 40 s
• Two binary inputs supervision 2 s
Reset time delay:
• One binary input supervision 6 s
• Two binary inputs supervision 0.6 s
— Selective block - BLOCK2
Selective block IN:
BLIN1 Selective block operating mode (ModeBLIN1
) OFF-ON IPh/IE-ON IPh-ON IE
BLIN maximum activation time for phase protections (t
B-IPh)
0.10...10.00 s (step 0.01 s)
BLIN maximum activation time for ground protections (t
B-IE)
0.10...10.00 s (step 0.01 s)
Selective block OUT:
BLOUT1 Selective block operating mode (ModeBLOUT1
) OFF-ON IPh/IE-ON IPh-ON IE
BLOUT Dropout time for phase protections (t
F-IPh
) 0.00...1.00 s (step 0.01 s)
BLOUT Dropout time for ground protections (t
F-IE
) 0.00...1.00 s (step 0.01 s)
BLOUT Dropout time for ground and phase protections (t
F-IPh/IE
) 0.00...1.00 s (step 0.01 s)
— Internal selective block - BLOCK4
Output internal selective block dropout time for phase protections (t
FI-IPh
)
0.00...10.00 s (step 0.01 s)
Output internal selective block dropout time for ground protections (t
FI-IE
)
0.00...10.00 s (step 0.01 s)
— Breaker failure - BF (L H T)
Phase current threshold (I
BF(L)
>) 0.05...1.00 I
n (L)
(step 0.01 I
n (L)
)
Residual current threshold (I
EBF (L)
>) 0.01...2.00 I
n (L)
(step 0.01 I
En (L)
)
Time delay(t
BF (L)
) 0.06...10.00 s (step 0.01 s)
Pickup time ≤ 0.04 s
Dropout ratio 0.95...0.98
Dropout time ≤ 0.05 s
Pickup accuracy (I
BF (L)
>) ± 0.5% with 0.1 I
n (L)
± 0.2% with 1 I
n (L)
Pickup accuracy (I
EBF (L)
>) ± 1% with 0.01 I
En (L)
± 0.3% with 1 I
En (L)
Operate time accuracy 5% ± 10 ms
Phase current threshold (I
BF(H)
>) 0.05...1.00 I
n (H)
(step 0.01 I
n (H)
)
Residual current threshold (I
EBF (H)
>) 0.01...2.00 I
n (H)
(step 0.01 I
En (H)
)
Time delay(t
BF (H)
) 0.06...10.00 s (step 0.01 s)
Pickup time ≤ 0.04 s
XMR-T EQUIPMENT MANUAL
Ed. 2.9 - 02/2021