ABB | SACE Emax 2
Trip unit Overview
4 - Operating features
20 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
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 16).
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
Minimum three-phase turn-on current
> 30 A (E1.2-E2-2-E4.2 with Rating Plug < 400 A)
> 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
Connection cable
Insulated with grounding cable (same characteristics as
Belden 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.
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