ABB | SACE Tmax XT
16 | © 2020 ABB | 1SDH001821A1002 - ECN000135670 Trip unit Overview | 4 - Operating features
4 - Operating features
Introduction
Ekip Touch has been developed and certified to function in specific environmental, electrical and mechanical
conditions; full details are available in the Technical catalog (page 4).
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 measurement and protection functions described in this document are provided with primary
voltage and current values within the following nominal ranges:
Parameter Operating limits
Primary current (line-to-line) 0,004 ÷ 16 In
(1)
Primary voltage (line-to-line) 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)
based on each phase; In refers to the nominal size defined by the Rating plug installed on the Trip unit,
available in models from 800 A to 1600 A
(2)
rated highest line-to-line voltage connected directly to Trip unit, also using sockets inside the CB; external
transformers must be used for higher voltage values, consult the chapter dedicated to the Measurement
module on page 137
Ekip Touch can self-supply itself directly from the internal current sensors:
Parameter Operating limits
Minimum three-phase turn-on current 82 A
Auxiliary power supply
Ekip Touch can be connected to an external auxiliary supply source, which is useful when certain functions
such as communication via Local Bus, recording manual operations, certain measurements and the
datalogger must if available.
The auxiliary supply can be provided by modules from the Ekip Supply range (further details about operation
are given on page 140) 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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