3UG4622-1AW30 Datasheet, PDF (65/114 Pages) List of Unclassifed Manufacturers – Monitoring and Control Devices

Monitoring Relays
3UG Monitoring Relays for Electrical and Additional Measurements
3UG46 15/3UG46 16 monitoring relays
The 3UG46 15/3UG46 16 line monitoring relay has a wide
voltage range and an internal power supply. The device is
equipped with a display and is parameterized using three
buttons. The 3UG46 15 device monitors three-phase networks
with regard to phase failure, undervoltage, overvoltage and
phase sequence. The 3UG46 16 monitoring relay monitors the
neutral conductor as well. The hysteresis is adjustable from 1 to
20 V. In addition the device has two separately adjustable delay
times for overvoltage and undervoltage from 0 to 20 s in each
case. If the direction is incorrect, the device switches off
immediately. Thanks to a special measuring method, a phase
failure is reliably detected in spite of the wide voltage range from
160 to 690 V AC and feedback through the load of up to 80 %.
The 3UG46 15/3UG46 16 monitoring relay can be operated on
the basis of either the open-circuit or closed-circuit principle and
with manual or auto RESET.
With the closed-circuit principle selected
Wrong phase sequence
L3-L2-L1
11/14
11/12
21/24
21/22
Phase failure
L1-L2-L3 L2-L3 L1-L2-L3
L1-L2-L3-N L1-L2-L3 L1-L2-L3-N
11/14
11/12
21/24
21/22
Undervoltage
x-y
<
11/14
11/12
21/24
21/22
Overvoltage
x-y
Delay
>
Hysteresis
Hysteresis
11/14
11/12
21/24
21/22
Delay
Line monitoring
3UG46 17/3UG46 18 monitoring relays
The 3UG46 17/ 3UG46 18 line monitoring relay has an internal
power supply and can automatically correct a wrong direction of
rotation. Thanks to a special measuring method, a phase failure
is reliably detected in spite of the wide voltage range from 160
to 690 V AC and feedback through the load of up to 80 %. The
device is equipped with a display and is parameterized using
three buttons. The 3UG46 17 line monitoring relay monitors
three-phase networks with regard to phase sequence, phase
failure, phase unbalance, undervoltage and overvoltage. The
3UG46 18 monitoring relay monitors the neutral conductor as
well. The hysteresis is adjustable from 1 to 20 V. In addition the
device has delay times from 0 to 20 s in each case. The times
respond to overvoltage, undervoltage, phase failure and phase
unbalance. The 3UG46 17/3UG46 18 monitoring relay can be
operated on the basis of either the open-circuit or closed-circuit
principle and with manual or auto RESET.
The one changeover contact is used for warning or switching off
in the event of line faults (voltage, unbalance), the other
responds only to a wrong phase sequence. In conjunction with
a contactor reversing assembly it is thus possible to change the
direction automatically.
With the closed-circuit principle selected
Phase failure
L1-L2-L3 L2-L3 L1-L2-L3
L1-L2-L3-N L1-L2-L3 L1-L2-L3-N
11/14
11/12
21/24
21/22
50 ms
Undervoltage
x-y
<
Hysteresis
11/14
11/12
21/24
21/22
50 ms
Overvoltage
Delay
>
x-y
Hysteresis
11/14
11/12
21/24
21/22
50 ms
Unbalance
Delay
> Asy
0%
Hysteresis
2%
11/14
11/12
21/24
21/22
50 ms
Delay
Siemens LV 1 T · 2006
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