1SDH002031A1002 ECN000092998 Rev. B
SACE Tmax XT2
– XT4 | 51
S(V) Protection
[2]
Parameter
Description
Default
Threshold Ul
This voltage determines the change of the trip threshold I20, with different
behaviour according to selective mode:
Mod
Voltage read
Trip threshold
Scal
< Ul
Ks x I20
Ul
I20
Lin
< Ul
Ks x I20
Ul (and < Uh)
𝐼20 𝑥 (1 − 𝐾𝑠) 𝑥 (𝑈
𝑚𝑖𝑠
− 𝑈ℎ)
𝑈ℎ − 𝑈𝑙
+ 𝐼20
The value is expressed both as an absolute value (Volt) and as a relative
value (Un), settable in a range: 0.2 Un .. 1 Un with 0.01 Un step
1 Un
Threshold Uh
The parameter is shown with a Lin curve and helps to calculate the trip
threshold I21:
Mod
Voltage read
Trip threshold
Lin
< Uh (and
Ul)
The threshold varies gradually (see
above)
Uh
I20
The value is expressed both as an absolute value (Volt) and as a relative
value (Un), settable in a range: 0.2 Un .. 1 Un with 0.01 Un step
1 Un
Threshold
Ks
Threshold I20 calculation constant.
The value is expressed as a percentage value of the threshold I20,
which is settable in a range: 0.1 I20 .. 1 I20 with 0.01 step
0.6 I20
Time t20
This is the trip time of the protection.
The value is expressed in seconds, which are settable in a range:
0.05 s .. 30 s, with 0.01 s step
0.1 s
Constraints, limitations, and additional functions
From the service connector (with Ekip Connect) or with system bus communication it is also
possible to access the block functions, see page70.
Summary of Contents for SACE Tmax XT2
Page 84: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 84 L curve Ekip M Touch S curve t k I2 ...
Page 86: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 86 G curve t k I2 G curve t k ...
Page 87: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 87 IU curve UV curve UV2 curve ...
Page 88: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 88 OV curve OV2 curve VU curve ...
Page 89: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 89 S V curve S2 V curve RV curve ...
Page 90: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 90 UF curve UF2 curve OF curve OF2 curve ...
Page 91: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 91 RP curve D curve ...
Page 92: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 92 OQ curve OP curve ...
Page 93: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 93 UP curve RQ curve ...
Page 94: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 94 ROCOF curve R JAM curve R STALL ...
Page 95: ...1SDH002031A1002 ECN000092998 Rev B SACE Tmax XT2 XT4 95 UC curve ...