Protections; Protections - Introduction - ABB SACE Emax 2 Instructions Manual

Protections

1 - Protections - Introduction

Operating principle The protection functions are available with all Ekip Touch models and versions.
References Many of the protection thresholds are displayed in two different quantities: absolute value and relative
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Each protection is associated with a different signal (current, voltages, frequencies, powers, etc) but the
operating principle is the same:
If the signal measured exceeds the set threshold, the specific protection activates (prealarm and/
1.
or alarm condition).
The alarm appears on the display and, after a period of time (timing t
2.
protection parameters set, can convert into a trip command (TRIP) transmitted to the internal
Trip Coil of the CB.
NOTE:
• if the signal measured drops below the set threshold before the trip time has elapsed, Ekip
Touch quits the alarm and/or timing status and returns to the normal operating condition
• all protections have a default configuration: check the parameters and change to suit the
installation requirements before putting into service
• to allow circuit-breaker tripping to be controlled by a specific protection, the protection
itself must be enabled
value.
The relative value depends on the type of measurement:
Type of protection Reference
Current In
Voltage Un
Frequency fn
Power Sn
Description
Nominal current of the Rating plug
Line-to-line voltage setting
Frequency setting
√3 x In x Un
1 - Protections - Introduction
ABB | SACE Emax 2
), depending on the
t
Protections