Packo RM/IB Series - Voltage Control Relay; Description; Diagram

55/78 06/02/2008
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Voltage control relay
The H3US control realy controls the 3-phase network:
- overvoltage between phases
- undervoltage between phases
Description
Nr
Part
Description
Schematic
1
Voltage range selection switch (220-380-
400-415-440-480V)
Select the nominal mains voltage
(Un)
2
Potentiometer for overvoltage setting,
+2  +10% (Over)
Set the maximum threshold
3
Potentiometer for undervoltage setting,
-2  -12% (Under)
Set the minimum threshold
4
Relay output status (yellow) LED. Over
threshold (R1)
Is lit when the voltage exeeds the
maximum threshold after the set
delay (8)
5
Relay supply status (green) LED. Un
Is lit when the voltage lies between
the minimum and maximum voltage
6
Relay output status (yellow) LED. Under
threshold (R2)
Is lit when the voltage exeeds the
minimum threshold, after the set
delay(7)
7
Threshold time delay adjusting
potentiometer (0.3  30s): undervoltage
(Tt2)
Set the time delay for undervoltage
Factory settings: 4 seconds
8
Threshold time delay adjusting
potentiometer (0.3  30s): overvoltage
(Tt1)
Set the time delay for overvoltage
Factory settings: 4 seconds
9
35 mm rail clip-in spring
Diagram