Protection Uv2; Protection Ov2 - ABB SACE Emax 2 Series Installation, Operation And Maintenance Instructions

Protection UV2

t
UV2
U15
t15

Protection OV2

t
U16 OV2
t16
105 | © 2013 ABB | 1SDH001000R0002 - L7804
Path
Main page - Menu - Advanced protections
Function
The protection UV2:
• Trips when the phase voltage drops below the set threshold, like the protection UV.
• It is independent from the UV protection: dual protection of type UV allows you to widen
the level of protection against the voltage drops.
If the voltage of a phase drops below the activation threshold, the protection trips within a fixed
time set by the user.
v
Parameters
The following is a description of the parameters:
Parameter
Enabling
Threshold (U15)
Time (t15)
Protection UV2 has Trip Enable, see page 109.
Path
Main page - Menu - Advanced protections
Function
Protection OV2:
• Trips when the phase voltage rises above the set threshold, like the protection OV.
• It is independent from the OV protection: dual protection of type OV allows you to widen
the level of protection against the voltage peaks.
If the voltage of a phase rises above the activation threshold, the protection trips within a fixed
time set by the user.
V
Parameters
The following is a description of the parameters:
Parameter
Enabling
Threshold (U16)
Time (t16)
Protection OV2 has Trip Enable, see page 109.
Description
Activates/deactivates the protection.
Defines the voltage value below which the protection is activated
(in reference to the curve, it is the part parallel to the ordinate).
It is represented both as an absolute value (Volts) and a relative
value (Vn, nominal value defined on the release).
The delay time between the exceeding of the U15 threshold and
the sending of the opening command (in reference to the curve, it
is the part parallel to the abscissa).
Description
Activates/deactivates the protection.
Defines the voltage value above which the protection is activated
(in reference to the curve, it is the part parallel to the ordinate).
It is represented both as an absolute value (Volts) and a relative
value (Vn, nominal value defined on the release).
The delay time between the exceeding of the U16 threshold and
the sending of the opening command (in reference to the curve, it
is the part parallel to the abscissa).
ABB | SACE Emax 2
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