UAt, UASt, UASNCt three-phase voltage monitor relays
Designation
Complex protection of the loads (mainly motors), connected to three-phase network. Their opration does not require neutral conductor.
Functions:
A: phase-asimmetry
S: phase sequence
N: line voltage increase
C: line voltage decrease
The operating values can be set by turn-knob.
The type-mark begins with letter U and it consists the versions of protection
Value of adjustable breaking delay:
0,2…20 s ± 10 %
Dimensions: 50×72×111 mm
Mounting: to 35 mm rail or 2 pcs M4 screws
Degree of protection: IP 20
Relevant standard: EN 61010
