ABB Relion SMU615 Technical Manual page 180

Section 7
Measurement functions
174
• 0: "normal"
• 1: "high"
• 2: "low"
• 3: "high-high"
• 4: "low-low"
The range information changes and the new values are reported.
GUID-AAAA7367-377C-4743-A2D0-8DD4941C585D V1 EN
Figure 118: Presentation of operating limits
The range information can also be decoded into boolean output signals on some of the
measuring functions and the number of phases required to exceed or undershoot the
limit before activating the outputs and can be set with the Num of phases setting in the
three-phase measurement functions CMMXU and VMMXU. The limit supervision
boolean alarm and warning outputs can be blocked.
Table 204: Settings for limit value supervision
Function
Three-phase current measurement
(CMMXU)
Three-phase voltage measurement
(VMMXU)
Table continues on next page
Settings for limit value supervision
High limit
Low limit
High-high limit
Low-low limit
High limit
Low limit
High-high limit
Low-low limit
1MRS758407 B
A high limit
A low limit
A high high limit
A low low limit
V high limit
V low limit
V high high limit
V low low limit
SMU615
Technical Manual