Page 52 - MCCB-XT5

ABB | SACE Tmax XT

Harmonic Distortion Allows an alarm to be activated in the case of distorted wavefoms.
Protection The protection can be enabled in the Measurements menu; if enabled an alarm is activated (page 34).
IMPORTANT: the protection does not handle the trip, just the signal

T Protection T protection protects against abnormal temperatures measured and transmitted to the sensor inside the
unit; temperature verification is always active and includes three operating states:
State Temperature range [°C] Ekip Touch actions
Standard -25 < t < 70 Normal operation; display on (1)
Warnings -40 < t < -25 or 70 < t < 85 Warning led @ 0.5 Hz; display on (1)
Display off; Alarm and Warning leds @ 2 Hz; TRIP if Trip
Alarm t < -40 or t > 85
enable is activated

(1) the display remains on within range: -20 °C / +70 °C
All protections enabled in the unit are active in all operating states.
The Trip Enabling parameter can be enabled in the Settings - Circuit breaker menu in order to handle an
open command if an alarm occurs (page 35).

Hardware Trip Protection Hardware Trip protects against connection errors in Ekip Touch and is available in the Settings - Circuit
breaker - Hardware Trip menu (page 34).
If enabled, with the CB closed, if one or more of these events are detected:
• current sensors disconnected (phase or external if enabled)
• Rating Plug disconnected.
• Trip Coil disconnected
• faults inside the unit
the alarm is signaled and a TRIP command is transmitted.
IMPORTANT:

• the protection trips if the error statuses persist for more than one second
• the signal is activated in the case of an alarm due to Trip coil disconnection and, in the
presence of Vaux, output YO is commanded until the Trip unit detects the CB Open state
(make sure that YO, Ekip Actuator, YO coil supply are present)

Iinst The purpose of this protection is to maintain the integrity of the circuit-breaker and installation in the
case of particularly high current values requiring shorter reaction times than those provided by the
instantaneous short-circuit-protection.
The protection cannot be disabled, the tripping threshold and time are defined by ABB.

50 | © 2022 ABB | 1SDH002039A1002 - ECN000212994 Protections | 2 - Standard Protections