Operating Features - ABB SACE Tmax XT7 Operation And Maintenance Manual

4 - Operating features

Introduction Ekip Touch has been developed and certified to function in specific environmental, electrical and mechanical
Electrical characteristics The Ekip Touch measurement and protection functions described in this document are provided with primary
Auxiliary power supply Ekip Touch can be connected to an external auxiliary supply source, which is useful when certain functions
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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.
voltage and current values within the following nominal ranges:
Parameter
Primary current (line-to-line)
Primary voltage (line-to-line)
Rated frequency
Peak factor
(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
Minimum three-phase turn-on current
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
Voltage
Tolerance
Maximum ripple
Maximum inrush current @ 24 V
Maximum rated power @ 24 V
Connection cable
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.
Operating limits
0,004 ÷ 16 In
(1)
5 ÷ 690 V AC
(2)
45 ... 55 Hz (with fn= 50 Hz) / 54 ... 66 Hz (with fn= 60 Hz)
Complying with standard IEC 60947-2
Operating limits
82 A
Operating limits
24 V DC galvanically isolated
±10%
±5%
10 A per 5 ms
4 W
Insulated with grounding cable (same characteristics
as Belden 3105A/B or higher)
ABB | SACE Tmax XT
Trip unit Overview | 4 - Operating features