Additional Functions And Protections - ABB SACE Tmax XT2 User Manual

22 - Additional functions and protections

Some protections are provided with additional functions that extend their characteristics and
Introduction
performance:
Nome
Thermal memory
Zone selectivity
Blocks
Startup
The presence of Ekip Synchrocheck allows the activating of the module protections (see details
at page 74):
Thermal memory The function, which can be activated for the L and S protections, prevents the overheating of
cables connected to the device controlled by Ekip Touch. In the case of multiple opening
commands in a short period of time the unit considers the time elapsed between the commands
and the magnitude of the malfunctions to reduce the trip time.
Zone selectivity Preface
S, S2, and G The function, which can be activated for the S, S2 and G protections (if available and enabled),
allows connecting several devices belonging to the same system, including Ekip Touch, to better
manage the trip commands in case of S, S2 e G protections.
The function allows coordinating the devices so that in the event of a malfunction:


Characteristics
Ekip Touch has five selectivity links:
Name
Szi
Szo
Gzi
Gzo
Szc
1SDH002031A1002 ECN000092998
Tipo di protezione
Overheating of the cables
Management of TRIPs in a network of switches
Protection block according to programmable events
Different thresholds according to control thresholds
NOTE: the function changes the trip time even in the event of overloads that do not
lead to the opening command
The device closest to the malfunction is triggered
The other devices are blocked for a programmable time
NOTE: the connection is possible between ABB devices that have the zone selectivity
function
Type Description
Input Protections S and S2 selectivity input
Output Protections S and S2 selectivity output
Input Protections G selectivity input
Output Protections G selectivity output
Municipality Municipality of selectivity network
Rev. B
Pagina
70
70, 71
74
73
Connection
From devices
downstream
To device upstream
From devices
downstream
To device upstream
The entire selectivity
network
SACE Tmax XT2 – XT4 | 70