Thytronic DMC3S - Nominal Values; Protection Functions; Direct Undervoltage - 27 CC (80.S); Maximum Directional Active Power 32 P

12
DMC3S - Manual - 08 - 2021
3.6 NOMINAL VALUES
Clamp voltage value UE or V2 U
E
or V
2
Phase correction V1-V2 0...360 °
Voltage value for synchrocheck V1 U
L1
/U
L2
/U
L3
Nominal relay frequency (f
n
) 50, 60 Hz
Nominal phase current I
L1
, I
L2
, I
L3
of relay (I
n
) 1 A or 5 A
Nominal phase current I
SQL
- I
Ne
, I
L3
of relay - I
n
1 A or 5 A
Primary CT nominal current of phase - I
np
1 A...10 kA
1...499 A (step 1 A)
500...4990 A (step 10 A)
5000...10000 A (step 100 A)
Nominal residual current of relay - I
En
1 A or 5 A
Primary CT residual nominal current - I
np
1 A...10 kA
1...499 A (step 1 A)
500...4990 A (step 10 A)
5000...10000 A (step 100 A)
Nominal phase-to-phase voltage of relay - U
n
50...130 V (step 1 V)
Nominal phase-to-phase voltage of relay V2 - U
n2
50...130 V (step 1 V)
Nominal phase voltage of relay - E
n
E
n
= U
n
/ √3
Nominal residual voltage of relay with direct measurement - U
En
50...130 V (step 1 V)
Nominal residual voltage of relay with calculated residual voltage - U
ECN
U
ECN
= U
n
∙ √3 = E
n
∙ 3
Nominal active power of relay - P
n
= √3 ∙ U
n
∙ I
n
= 3 ∙ E
n
∙ I
n
-
Nominal reactive power of relay - Q
n
= √3 ∙ U
n
∙ I
n
= 3 ∙ E
n
∙ I
n
-
Nominal apparent power of relay - S
n
= √3 ∙ U
n
∙ I
n
= 3 ∙ E
n
∙ I
n
-
Nominal primary phase-to-phase VT line voltage - U
np
50 V...500 kV
50...499 V (step 1 V)
500...4990 V (step 10 V)
5000...49900 V (step 100 V)
50000...500000 V (step 1000 V)
Nominal primary phase-to-phase VT residual voltage ∙√3 - U
Enp
50 V...500 kV
50...499 V (step 1 V)
500...4990 V (step 10 V)
5000...49900 V (step 100 V)
50000...500000 V (step 1000 V)
Nominal primary phase-to-phase V2 side VT voltage - U
n2p
50 V...500 kV
50...499 V (step 1 V)
500...4990 V (step 10 V)
5000...49900 V (step 100 V)
50000...500000 V (step 1000 V)
3.7 PROTECTION FUNCTIONS
— Direct undervoltage - 27CC (80.s)
Threshold U
CC
<
Definite time
First definite time threshold ( U
cc
<
def
) 0.60...1.00 U
ncc
(step 0.01 U
ncc
)
Operating time (t
Ucc
<
def
) 0.00...10.00 s (step 0.01 s)
— Maximum directional active power 32P
Threshold P 1>
Parameters
Tripping direction (P
1
>
DIR
) P Forward/P Reverse/P Forward/Reverse
Reset delay (t
P1
>
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 definite time threshold ( P 1>
def
) 0.80...1.20 P
n
(step 0.01 P
n
)
Operating time (t
P1
>
def
) 0.05...1000 s
0.05...99.9 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Back-up time (t
rP1
>
def
) 0.05...0.50 s (step 0.01 s)
Threshold P 2>
Parameters
Tripping direction (P
2
>
DIR
) P Forward/P Reverse/P Forward/Reverse
Reset delay (t
P2
>
RES
) 0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
Definite time
Second definite time threshold ( P 2>
def
) 0.80...1.20 P
n
(step 0.01 P
n
)
Operating time (t
P2
>>
def
) 0.05...1000 s
0.05...99.9 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Back-up time (t
rP2
>
def
) 0.05...0.50 s (step 0.01 s)