Set A-B; Harmonic Distortion - ABB SACE Emax 2 Series Installation, Operation And Maintenance Instructions

Harmonic Distortion

108 | © 2013 ABB | 1SDH001000R0002 - L7804

Set A-B

Path
Main page - Menus - Settings - Dual Set
Function
Enabling the function Set A-B allows you to activate two different protection configurations,
one alternative to the other.
The priority and the activation of the protection set is associated to various programmable
events and parameters.
Parameters
It is possible to modify various parameters:
Parameter
Enabling
Default Set
CB Closing Dual
Set
CB closing time
Dual Set with Vaux
Path
Main page - Menus - Measurements
Function
The Harmonic Distortion protection checks the level of harmonic distortion of the currents.
A maximum peak factor greater than 2.1 is signalled on the display as a fault.
Description
Activates/deactivates the protection.
NOTE: Enabling changes the structure of the Protections
and Advanced Protections menus: after it is accessed, an
intermediate page appears for selecting the reference set (Set
A and Set B).
Enabling activates an icon in the Histograms page,
representing the Set in use. For details refer to the paragraph that
describes the Histograms page, on page 61.
Defines the main and secondary protection sets.
If activated it has two conditions:
• the main set is active if the position of the circuit-breaker (open
or closed) has been stable for a duration greater than the value set
for "CB closing time".
• the secondary set is active at the change of state of the circuit-
breaker, for a duration defined by the parameter "CB closing time".
This option is active if the parameter "CB Closing Dual Set" is
activated.
It defines the time for which the alternative set is active, starting
from the circuit-breaker change of state (from Open to Closed).
If activated it has two conditions:
• in the presence of auxiliary power supply by Ekip Supply
modules, the main set is active.
• in the absence of auxiliary power supply by Ekip Supply
modules, the alternative set is active.
Ekip Touch protection release | 11 - Hi-Touch protections
ABB | SACE Emax 2