Doc. SIE10166 Rev. 10 Page 7 of 28
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, or 300 V AC max; 20 V AC max.
. Operating time accuracy: 0.025% of delay ± 100 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) safety sockets.
. Outputs are isolated between them.
2.2 MAIN CONTACT INPUTS
. Number of main contact inputs: six in all, divided in three 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: 30 Ohm to 10 kOhm.
. Contact test voltage: 24 V. Main contact test current: 50 mA.
. Each input group is isolated with respect to the others.
. Connection: via nine safety sockets.
. When a main contact is closed, the corresponding light on the front panel turns on.
2.3 AUXILIARY INPUTS
. Number of auxiliary inputs: four, divided in two groups of two each.
. Each input group is isolated with respect to the other.
. 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 two groups.
. Connection: via six safety sockets.
. When an auxiliary input is closed, the corresponding light on the front panel turns on.
2.4 INPUTS TIMING
. Sample rate: 20 kHz maximum for recording up to 1s; 2kHz for recordings from 1 to 10 s; 200Hz
for recordings up to 100s; 100Hz up to 200s.
. Resolution: 0.1 ms to 1 s.
. Inputs timing accuracy: see the following table
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