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ABB | SACE Emax 2
96 | © 2013
ABB |
1SDH001000R0002 - L7804
Ekip Touch protection release | 10 - Measuring Pro protections
10 - Measuring Pro protections
Presentation
The Measuring Pro protections are available in all versions of releases of the Touch range that
have an Ekip Measuring Pro module.
List of protections
The following is a list of the Measuring Pro protections:
Symbol
Protection against
UV
Minimum voltage
OV
Maximum voltage
VU
Voltage unbalancing
UF
Minimum frequency
OF
Maximum frequency
RP
Reverse active power
Phase Sequence
Phase sequence error
Cos
φ
Power factor error
If the Ekip Measuring Pro module and the Ekip Synchrocheck module are present, a further
selection is activated:
Symbol
Function
Synchrocheck
Synchronism between two independent
power supply systems
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.