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ManualsBrandsSiemens ManualsCurrent Monitoring RelaysCurrent Monitoring Relay 240V 1CO

3UG4621/3UG4622 current monitoring relays

7.3 Functions

3UG4 / 3RR2 monitoring relays

158 Manual, 02/2013, NEB927043002000/RS-AA/002

Function diagrams (on reaching the lower measuring range limit of the measuring current

I > 3 mA / 50 mA)

Display Memory = no

Relay switching behavior = NC (closed-circuit

principle)

I > 3 mA / 50 mA

Memory = no

Relay switching behavior = NO (open-circuit

principle)

I > 3 mA / 50 mA

I = off

>

I

>

11/14

11/12

onDel

I Del

Hyst

J > I

Hyst

J=0

A

1-A2

onDel

I

11/14

11/12

onDel

I

Del

Hyst

J > I

Hyst

J=0

A

1-A2

onDel

I

I = off

>

I

>

11/14

11/12

onDel

I

Del

Hyst

J=0

A

1-A2

onDel

I

J <

I

11/14

11/12

onDel

I

Del

Hyst

J=0

A

1-A2

onDel

I

J <

I

I

>

I

>

Hyst

Hyst

11/14

11/12

J=0

onDel

onDel

A

1-A2

I

J >

I

I

J <

I

I Del

I Del

I Del I Del

Hyst

Hyst

11/14

11/12

J=0

onDel

onDel

A

1-A2

I

J >

I

I

J <

I

I Del

I Del

I Del I Del

J = Currently measured current value

I = set threshold value for the current