Page 29 - ACB-E1.2-E2.2-E4.2-E6.2

ABB | SACE Emax 2
Protections

1 - Protections - Introduction

Operating principle The protection functions are available with all Ekip Touch models and versions.
Each protection is associated with a different signal (current, voltages, frequencies, powers, etc) but the
operating principle is the same:
1. If the signal measured exceeds the set threshold, the specific protection activates (prealarm and/
or alarm).
2. The alarm appears on the display and, after a period of time (timing t ), depending on the
t
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

References Many of the protection thresholds are displayed in two different quantities: absolute value and relative
value.
The relative value depends on the type of measurement:
Type of protection Reference Description
Current In Nominal current of the Rating plug
Voltage Un Line-to-line voltage setting
Frequency fn Frequency setting
Power Sn √3 x In x Un

27 | © 2022 ABB | 1SDH001316R1002 - ECN000232533 Protections | 1 - Protections - Introduction