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ManualsBrandsSiemens ManualsCurrent Monitoring RelaysCurrent Monitoring Relay 240V 1CO

3UG4621/3UG4622 current monitoring relays

7.3 Functions

3UG4 / 3RR2 monitoring relays

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

157

Function diagrams (from application of the rated control supply voltage U

S

= on)

Display Memory = no

Relay switching behavior = NC (closed-circuit

principle)

U

S

= on

Memory = no

Relay switching behavior = NO (open-circuit

principle)

U

S

= on

I = off

>

I

>

11/14

11/12

onDel

I

Del

Hyst

-!,

J=0

A1-A2

I



11/14

11/12

onDel

I



Del

Hyst

J=0

A1-A2

I

-!,



I = off

>

I

>

11/14

11/12

onDel

I

Del

Hyst

J=0

A

1-A2

J<

I



I



11/14

11/12

onDel

I

Del

Hyst

J=0

A

1-A2

J<

I



I



I

>

I

>

Hyst

Hyst

11/14

11/12

J=0

onDel

I Del

A

1-A2

I

J>

I

I

J<

I

I

Del

I Del I Del

Hyst

Hyst

11/14

11/12

J=0

onDel

I Del

A

1-A2

I

J>

I

I

J<

I

I Del

I Del I Del

J = Currently measured current value

I = set threshold value for the current