ABB SACE Emax E1.2, Operating Instructions For The Design Engineer

Page: 129 / 311

ABB | SACE Emax 2
Ekip Touch protection trip unit | 20 - Operating features 123 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
20 - Operating features
Electrical characteristics
Operating currents and voltages
The correct operation of Ekip Touch trip unit is guaranteed with primary currents with clearly defined
characteristics.
In addition, Ekip Touch trip unit can be powered directly by the internal current sensors or, in the presence of
the Ekip Measuring Pro module, by the installation voltage.
The following are the specifications:
Parameter Operating limits
Minimum three-phase turn-on current
> 80 A (E1.2-E2.2-E4.2)
> 160 A (E6.2)
Rated frequency 50 / 60 Hz ± 10 %
Peak factor Complying with standard IEC 60947-2
Minimum three-phase turn-on voltage > 80 V
Auxiliary power supply
All the trip units of the Ekip Touch range can be connected to an external auxiliary power supply source,
useful to activate certain functions such as communication on a Local Bus, recording of manual operations,
measurements and the datalogger.
The auxiliary power can be supplied by the modules of the Ekip Supply range (for further functional details,
see page 177), or with direct connection to a terminal box.
The direct connection must be made guaranteeing the following operating conditions:
Parameter Operating limits
Voltage 24 V DC galvanically isolated
Tolerance ± 10 %
Maximum ripple ± 5 %
Maximum inrush current
@ 24 V
10 A per 5 ms
Maximum rated power
@ 24 V
4 W
Connection cable
Insulated with grounding cable (same characteristics as Belden 3105A/B or
higher)
IMPORTANT: in case of direct connection, the power supply must be galvanically
insulated and provide the insulation characteristics established by the Standard IEC
60950 (UL 1950) or equivalent.