DOC. MIE91093 Rev. 1.34
Page 22 of 145
Voltage relays often have an overvoltage and an undervoltage
threshold: for this reason, in the following we use the auxiliary
voltage generator, that allows setting the pre-fault and the
fault voltage independently of each other. For overvoltage
relays it is also possible to use the main output.
The following is the connection schematic.
1.2.2. Connection to voltage output
. Power-on T1000 PLUS, acting on switch (2): the internal light
turns on.
. Press the button (70) to have the AC voltage available.
. 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).
. If you use the auxiliary AC voltage, as suggested, first select
the auxiliary voltage range, then select the pre-fault + fault
mode as follows.