ABB SACE Emax 2 Series Installation, Operation And Maintenance Instructions page 124

120 | © 2013 ABB | 1SDH001000R0002 - L7804
Continued from the previous page
Parameters
It is possible to modify various parameters:
Parameter Description
Enabling
Activates/deactivates the protection.
Defines the variation dynamic of the current threshold, as represented
Curves
in the two diagrams above.
It defines the current value that if exceeded activates the protection (in
Current reference to the curve, it is the part parallel to the ordinate).
Threshold (I21) It is represented both as an absolute value (Ampere) and as a relative
value (In, nominal value defined by the Rating Plug).
With the curve in step mode, is the threshold that determines the
variation of the level of I21:
• With voltage ≥ Ul2, the tripping threshold is I21.
Threshold Ul2
(Step) • With voltage < Ul2, the tripping threshold is Ks * I21.
It is represented both as an absolute value (Volts) and as a percentage
(of Vn, a nominal value defined on the release).
With the curve in linear mode, it is the threshold that determines the
variation of the level of I21:
• With voltage ≥ Uh2, the tripping threshold is I21.
Uh2 and Ul2
• With voltage < Uh2 and > Ul2, the tripping threshold changes
Threshold
gradually.
(Linear)
• With voltage ≤ Ul2, the tripping threshold is Ks * I21.
It is represented both as an absolute value (Volts) and as a percentage
(of Vn, a nominal value defined on the release).
Constant for calculation of the variation of the I21 threshold. To be
Threshold Ks2
applied in different ways according to the type curve selected.
This is the delay time between the exceeding of the I21 threshold
(determined by the voltage value read) and the sending of the opening
Time (t21)
command (in reference to the curve, t21 affects the entire curve,
moving it along the vertical axis).
The protection S2 (V) has Trip Enable, see page 93.
Ekip Touch protection release | 13 - G Hi-Touch protections
ABB | SACE Emax 2