Measuring Pro Protections; Presentation - ABB SACE Emax 2 Series Installation, Operation And Maintenance Instructions

10 - Measuring Pro protections

Presentation The Measuring Pro protections are available in all versions of releases of the Touch range that
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have an Ekip Measuring Pro module.
List of protections
The following is a list of the Measuring Pro protections:
Symbol
UV
OV
VU
UF
OF
RP
Phase Sequence
Cos φ
If the Ekip Measuring Pro module and the Ekip Synchrocheck module are present, a further
selection is activated:
Symbol
Synchrocheck
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, frequency 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 (Un).
• The frequency protections are related to the frequency set on the release (fn).
• the power protections refer to the product between current and rated voltage (Sn = √3
* In * Un).
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.
Protection against
Minimum voltage
Maximum voltage
Voltage unbalancing
Minimum frequency
Maximum frequency
Reverse active power
Phase sequence error
Power factor error
Function
Synchronism between two independent
power supply systems
Ekip Touch protection release | 10 - Measuring Pro protections
ABB | SACE Emax 2