Operating Features; Primary Operating Currents; Auxiliary Power Supply - ABB SACE Emax E1.2 Operating Instructions For The Design Engineer

7 - Operating features

Primary operating currents The Ekip Dip trip unit can be powered directly by the internal current sensors, with clearly defined primary
Auxiliary power supply The Ekip Dip trip unit can be connected to an external auxiliary power source, useful for activating some
35 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
currents.
The operating conditions for proper operation are listed below:
Parameter
Minimum three-phase turn-on current
Rated frequency
Harmonic distortion
functions such as communication on the Local Bus or recording of manual operations.
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
Voltage
Tolerance
Maximum ripple
Maximum inrush current @ 24 V
Maximum rated power @ 24 V
Connection cable
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.
Operating limits
> 80 A (E1.2-E2.2-E4.2)
> 160 A (E6.2)
50 / 60 Hz ± 10 %
Conforming to 60947-2
Operating limits
24 V DC galvanically isolated
± 10 %
± 5 %
10 A per 5 ms
4 W
Insulated with a two-pole shielded cable
(Belden 3105A type or equivalent)
Ekip Dip protection trip unit | 7 - Operating features
ABB | SACE Emax 2