G Touch Protections; Presentation - ABB SACE Emax 2 Series Installation, Operation And Maintenance Instructions

12 - G Touch protections

Presentation G Touch protections are available in all the versions of releases of the Generators range (Ekip
111 | © 2013 ABB | 1SDH001000R0002 - L7804
G Touch and Ekip G Hi-Touch).
List of protections
The following is a list of the G Touch protections:
Symbol Protection against
S(V) Voltage control short-circuit
RV Residual voltage
RQ Reversal of reactive power
OQ
Maximum reactive power
OP Maximum active power
UP Minimum active power
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 voltage or power 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 voltage protections are related to the rated size of the voltage set on the release (Vn).
• the power protections refer to the product between current and rated voltage (Sn = √3
* In * Vn).
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.
ABB | SACE Emax 2
Ekip Touch protection release | 12 - G Touch protections