Relay switching behavior = NO (open-circuit
principle)
①
Test (Y1-Y3)
②
Reset (Y2-Y3)
③
Measured value
④
Hysteresis
⑤
Warning
⑥
Shutdown
⑦
Green
⑧
Red
⑨
Yellow
t
= Time for internal device test after applying the supply voltage
S
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005
9.4 3UG4582/3UG4583 insulation monitoring relays
With fault storage, manual RESET, 2 x 1 changeover contacts, warning
and shutdown
3UG458. insulation monitoring relay.
187