Voltage Advanced Protections - ABB SACE Emax 2 Series Operating Instructions Manual

4 - Voltage Advanced protections

S(V) Protection
t
I20
t20
68 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
List The Advanced Voltage protections, available by default for the Ekip G Touch and Ekip G Hi-Touch models
and configurable in the remaining models as additional SW package, are:
Name
S(V)
S2(V) (1)
RV
S2(V) protection is not available by default with Ekip G Touch. However, it can be integrated by
(1)
requesting the relative SW package
Function
S(V) protection protects against short circuits, with a threshold sensitive to the value of the voltage.
If the current of one or more phases exceeds threshold I20 for longer than time t20, the protection
S(V)
activates and sends a TRIP command.
Following a voltage drop, the I20 threshold varies according to two different modes:
• Step provides for a stepped variation, depending on parameters Ul and Ks.
• Lin (linear) provides for a dynamic variation, depending on parameters Ul, Uh and Ks.
I20
I
I20
Ks x I20
Figure 23
To check and simulate the trip times in relation to all the parameters, please consult:
• the summary table of the protections with the calculation formulas (page 96)
• the graph with trip curve (page 107)
Parameters
Parameter Description
Activates/deactivates the protection and its availability in the
Enable
parameters menu
Activates/deactivates transmission of the open command: if
Trip Enable
disabled, the alarm and exceedance of protection time are only
managed as information
Curve Allows the operating mode, Step or Lin, to be selected
Establishes the value that activates the protection and
contributes towards calculating the trip time.
Threshold I20
The value is given as both absolute value (amperes) and relative
value (In) and can be set within the range: 0.6 In to 10 In, in 0.1 In
steps
Type of protection
Short-circuit with voltammetric
control
Short-circuit with voltammetric
control
Residual voltage
V
Ul
Page
68
69
71
I20
I20
Ks x I20
UI
Continued on the next page
Ekip Touch - Protections
4 - Voltage Advanced protections
ABB | SACE Emax 2
Uh V
Default
OFF
OFF
Scal
1 In