ISA T1000 PLUS User Manual page 42

DOC. MIE91093 Rev. 1.34 Page 42 of 145
. Power-on T1000 PLUS, acting on switch (2): the internal light
turns on.
. Set the current adjustment knob (6) completely counter-
clockwise.
. If you wish to use the DC voltage output to supply the relay
under test, press the button (69), then use knob (20) to
adjust the voltage value, that is displayed on the LCD display
(23). Connect the DC supply input of the relay to sockets (63).
. Connect the relay current input to the two main current
output sockets (13) that correspond to the current to be
generated. For the sake of accuracy and ease of adjustment,
select the smallest range greater than the desired current.
. Select the connection socket measurement pressing the
push-button (57): the LED turns on. This enables current
output measurement. WARNING: if you do not select the
output socket, the test displays false current or voltage values.
. Select ON and check if you can easily adjust the desired
current, acting on knob (6). If the current is reached with a
rotation less than one fifth of the total, this means that the
burden is very low. In this instance, reduce the output power
with the following menu commands:
Test control > Test power > 60 VA > ESC
The 60 VA LED turns on. Select ON again, and check that the
desired current can be reached with ease of adjustment; if the
current is not reached, go back and select 300 VA. If the
adjustment is still difficult, specially in case of low current
settings, connect a resistor of the set in series to current
output and use the external meter, that has lower
measurement ranges. As the no-load voltage output of the 10
A range is 50 V, with 470 Ohm the maximum current is 100
mA; with 1000 Ohm it is 50 mA, and with 2200 Ohm it is 22
mA.
. Connect the relay voltage input to the two auxiliary AC
voltage output sockets (62).