Ov2 Protection; Uf2 Protection - ABB SACE Emax E1.2 Operating Instructions For The Design Engineer

OV2 Protection

t
U16 OV2
t16

UF2 Protection

t
UF2
f17
t17
85 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
Path
Main page - Menu - Advanced
Function
OV2 protection:
• It trips when the line-to-line voltage rises above the set threshold, like the OV protection.
• It is independent from OV protection: it is therefore possible to program thresholds and functions of the
two protections in order to have different installation solutions (for example: signalling with OV and trip
with OV2, or vice versa, or OV and OV2 both for signalling or trip).
If at least one line-to-line voltage rises above the activation threshold, the protection trips within a fixed time
set by the user.
V
Parameters
Here is a list of the available parameters:
Parameter Description
Enable
To activate/deactivate the protection.
It defines the voltage value above which the protection is activated (with reference to
the figure above, the threshold is the part of the curve parallel to the y-axis).
Threshold U16
It is represented both as an absolute value (Volts) and a relative value (Un, nominal
value defined on the trip unit).
The delay time between the exceeding of the U16 threshold and the sending of the
Time t16 opening command (with reference to the figure above, the threshold is the part of the
curve parallel to the x-axis).
OV2 protection has StartUp enable, see page 88.
Via Ekip Connect it is also possible to access the blocking functions, see page 72.
Path
Main page - Menu - Advanced
Function
UF protection:
• It trips when the line frequency drops below the set threshold, like UF protection.
• It is independent from UF protection: it is therefore possible to program thresholds and functions of the
two protections in order to have different installation solutions (for example: signalling with UF and trip
with UF2, or vice versa, or UF and UF2 both for signalling or trip).
If the line frequency drops below the activation threshold, the protection trips within a fixed time set by the
user.
NOTE: the protection is not active for voltages <30V.
f
Parameters
Here is a list of the available parameters:
Parameter Description
Enable
To activate/deactivate the protection.
It defines the frequency value below which the protection is activated (with reference to
the figure above, the threshold is the part of the curve parallel to the y-axis).
Threshold f17
It is represented both as an absolute value (Hertz) and a relative value (fn, nominal
value defined on the trip unit).
The delay time between the exceeding of the f17 threshold and the sending of the
Time t17 opening command (with reference to the figure above, the threshold is the part of the
curve parallel to the x-axis).
UF2 protection has StartUp enable, see page 88.
Via Ekip Connect it is also possible to access the blocking functions, see page 72.
ABB | SACE Emax 2
Ekip Touch protection trip unit | 11 - Hi-Touch protections