Hi-Touch Protections; Presentation - ABB SACE Emax 2 Series Installation, Operation And Maintenance Instructions
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11 - Hi-Touch protections
Presentation Hi-Touch protections are available for Ekip Hi-Touch and Ekip G Hi-Touch releases.
102 | © 2013 ABB | 1SDH001000R0002 - L7804
List of protections
The following is a list of the Hi-Touch protections:
Symbol
Protection against
S2
Short-circuit with adjustable delay
D
Directional short-circuit with adjustable delay
UV2
Minimum voltage
OV2
Maximum voltage
UF2
Minimum frequency
OF2
Maximum frequency
Set A-B
Double configuration of the protections
Harmonic
Harmonic distortion
Distortion
Operating principle
The protections include a series of parameters that allow the user to adjust the activation
thresholds and the tripping times of the circuit-breaker.
The operating principle of all the protections is similar: if the current, voltage or frequency signal
exceeds the set protection threshold, the specific protection will enter the alarm condition and
will begin to delay.
The duration of the delay depends on the threshold and time parameters set, and depending
on the dynamic of the signal we can have two behaviours:
• If the alarm condition persists, the release opens the circuit-breaker.
• If the signal drops below the protection threshold, the release exits from the alarm condition,
interrupts the delay and doesn't open the circuit-breaker.
The protection thresholds are distinguished by type:
• The current protections are related to the rated size of the rating plug (In).
• The voltage protections are related to the rated size of the voltage set on the release (Un).
• The frequency protections are related to the frequency set on the release (fn).
IMPORTANT:
• To manage tripping of the circuit-breaker with a specific protection, the
protection itself must be enabled and, if supported, must have the trip
enable parameter activated.
• All the protections have a default configuration: in the event of activation,
check the parameters and make changes according to the requirements
of your installation.
Ekip Touch protection release | 11 - Hi-Touch protections
ABB | SACE Emax 2
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