Relay switching behavior = NO (open-circuit
principle)
With fault storage, manual RESET, 2 x 1 changeover contacts, warning
and shutdown
$$
W
V
W
V
/('
/('
/('
)
① Test (Y1-Y3)
② Reset (Y2-Y3)
③ Measured value
④ Hysteresis
⑤ Warning
⑥ Shutdown
⑦ Green
⑧ Red
⑨ Yellow
t
S
= Time for internal device test after applying the supply voltage
3UG458. insulation monitoring relay.
9.4 3UG4582/3UG4583 insulation monitoring relays
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 187
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