Page 46 - MCCB-XT2-XT4

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 28).
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 29).

Hardware Trip Protection Hardware Trip protects against connection errors in Ekip Touch and is available in the Settings - Circuit
breaker - Hardware Trip menu (page 28).
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 if an alarm occurs due to Trip coil disconnection and, in the presence
of Vaux, CB opening is commanded until the Trip unit detects the CB open state; correct
operation requires the presence of MOE-E, Ekip Com or Ekip Micro I/O, and the relative
supply sources

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.

44 | © 2022 ABB | 1SDH002031A1002 - ECN000212994 Protections | 2 - Standard Protections