ABB SACE Tmax XT2 - Additional Functions and Protections

1SDH002031A1002 ECN000092998 Rev. B SACE Tmax XT2 – XT4 | 70
22 - Additional functions and protections
Introduction
Some protections are provided with additional functions that extend their characteristics and
performance:
Nome
Tipo di protezione
Pagina
Thermal memory
Overheating of the cables
70
Zone selectivity
Management of TRIPs in a network of switches
70, 71
Blocks
Protection block according to programmable events
74
Startup
Different thresholds according to control thresholds
73
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.
NOTE: the function changes the trip time even in the event of overloads that do not
lead to the opening command
Zone selectivity
S, S2, and G
Preface
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:
 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
Characteristics
Ekip Touch has five selectivity links:
Name
Type
Description
Connection
Szi
Input
Protections S and S2 selectivity input
From devices
downstream
Szo
Output
Protections S and S2 selectivity output
To device upstream
Gzi
Input
Protections G selectivity input
From devices
downstream
Gzo
Output
Protections G selectivity output
To device upstream
Szc
Municipality
Municipality of selectivity network
The entire selectivity
network