Page 19 - Sace Emax 2 Manual for design engineers

ABB | SACE Emax 2
4 - Operating features

Introduction Ekip Dip and Ekip Touch have been developed and certified to function in specific environmental, electrical
and mechanical conditions; full details are available in the Technical catalog (page 13).
The following sections describe the electrical and power supply characteristics that enable Trip unit and the
relative electronic accessories to operate correctly.

Electrical characteristics The Ekip Touch and Ekip Dip measurement and protection functions described in this document are provided
with primary voltage and current values within the following nominal ranges:
Parameter Rated operating range
Primary current 0,004 ÷ 16 In (1)
Primary voltage 5 ÷ 690 V AC (2)
Rated frequency 45 ... 55 Hz (with fn= 50 Hz) / 54 ... 66 Hz (with fn= 60 Hz)
Peak factor Complying with standard IEC 60947-2

(1) range with reference to each phase; In refers to the rated size defined by the Rating plug installed on the Trip
unit, available in models from 100 A to 6300 A, depending on the circuit-breaker model used
(2) for Ekip Touch rated highest line-to-line voltage connected directly to Trip unit, also to sockets inside the
CB; external transformers must be used for higher voltage values, consult the chapter dedicated to the
Measurement modules

Self-supply The internal current sensors are able to supply the Trip unit directly; Ekip Touch versions Hi-, G, G Hi- are also
fitted with the Measurement enabler with voltage sockets module, which allows the Trip unit to be supplied
by the installation voltages as well:

Parameter Operating limits
> 30 A (E1.2-E2-2-E4.2 with Rating Plug < 400 A)
Minimum three-phase turn-on current > 80 A (E1.2-E2-2-E4.2 with Rating Plug ≥ 400 A)
> 160 A (E6.2)
Minimum three-phase turn-on voltage > 80 V

Auxiliary power supply Ekip Dip and Ekip Touch can be connected to an external auxiliary supply source, which is useful for activating
certain functions such as communication via Local Bus, recording manual operations, certain measurements
and the datalogger if available.
The auxiliary supply can be provided by modules from the Ekip Supply range or by direct connection to the
terminal box.
Direct connection must guarantee 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
Insulated with grounding cable (same characteristics as Belden
Connection cable
3105A/B or higher)

IMPORTANT: if connection is direct, the power supply must be galvanically insulated
and provide the insulation characteristics established by standard IEC 60950 (UL
1950) or equivalent.

17 | © 2020 ABB | 1SDH001330R1002 - ECN000134959 - Rev. A Trip unit Overview | 4 - Operating features