Doc. SIE10169 Rev. 13 Page 8 of 32
2 CHARACTERISTICS
2.1 COIL DRIVING CIRCUITS
. Number of circuits: two; optionally four.
. Type of driver: electronic; it ensures superior timing control.
. Driver characteristic: 300 V DC max; 30 A DC max; 300 V AC max; 20 A AC max.
. Operating time accuracy: 0.025% of delay ± 50 us.
. Coil current ranges: 2.5; 10; 25 A full scale, user selectable.
. The coil current is measured by a dedicated circuit, which is enclosed in the test set, so that a
single connection is enough to connect the coil and to measure its current.
. Number of coil current measurement circuits: two (optionally four ).
. In case of four outputs, it is possible to select the single or multiple phase opening.
. Coil current measurement accuracy: 0.5% of the reading ± 0.1% of the selected range.
. Connection: via four (optionally eight or twelve) safety sockets.
. Outputs are isolated between them.
2.2 MAIN CONTACT INPUTS
. Number of main contact inputs: six in all (two per phase), divided in three groups of two each;
optionally twelve (four per phase), divided in six groups of two each, or 18, divided in 9 groups of
two each.
. Test of the main contact and of the pre-insertion resistor contact, selectable.
. The contact is CLOSED when the contact resistance is less than 10 Ohm.
. Pre-insertion resistor contact range: 20 Ohm to 10 kOhm.
. Contact test voltage: 24 V; test current: 50 mA.
. Each input group is isolated with respect to the others.
. Connection: via nine safety sockets (optionally eighteen or twenty seven safety sockets).
. When a main contact is closed, the corresponding light on the front panel turns on.
2.3 AUXILIARY INPUTS AND OUTPUTS
. Number of auxiliary inputs: four, divided in two groups of two each. Optionally, eight or twelve,
divided in four or six groups of two inputs.
. Each two inputs are isolated with respect to the others.
. Capability of testing dry contacts. Contact test voltage: 24 V; test current: 2 mA.
. Capability of testing wet contacts. Contact input voltage: 20 to 300 V; test current: 2 mA.
. Contact selection can be different on the groups.
. Connection: via six (optionally 12 or 18) safety sockets.
. When an auxiliary input is closed, the corresponding light on the front panel turns on
. One relay auxiliary output. Contact characteristics: 8 A, 250 V DC. The contact operation can be
timed with respect to test start.
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