ABB XT7, Руководство по эксплуатации и обслуживанию

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ABB | SACE Tmax XT
52 | © 2020 ABB | 1SDH001821A1002 - ECN000135670 Protections | 7 - Standard Protections
Harmonic Distortion Protection Allows an alarm to be activated in the case of distorted wavefoms.
The protection can be enabled in the
Measurements menu; if enabled an alarm is activated (page 36).
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)
Alarm t < -40 or t > 85
Display off; Alarm and Warning leds @ 2 Hz; TRIP if Trip
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 37).
Hardware Trip Protection Hardware Trip protects against connection errors in Ekip Touch and is available in the
Settings
-
Circuit
breaker - Hardware Trip menu (page 36).
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)