ABB RELION REX640 Technical Manual page 1436

Measurement functions
Figure 803: 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
of phases setting in the three-phase measurement functions CMMXU and VMMXU.
The limit supervision boolean alarm and warning outputs can be blocked.
Table 1358: Settings for limit value supervision
Function
Three-phase current measurement (CMMXU) High limit
Three-phase voltage measurement (VMMXU) High limit
Phase voltage measurement (VPHMMXU)
Single-phase voltage measurement (VAMM-
XU)
Residual current measurement (RESCMMXU)
Table continues on the next page
1436
Settings for limit value supervision
A high limit
Low limit A low limit
A high high limit
High-high limit
A low low limit
Low-low limit
V high limit
Low limit V low limit
V high high limit
High-high limit
V low low limit
Low-low limit
V high limit
High limit
Low limit V low limit
V high high limit
High-high limit
V low low limit
Low-low limit
V high limit
High limit
Low limit V low limit
V high high limit
High-high limit
V low low limit
Low-low limit
A high limit res
High limit
1MRS759142 F
Num
REX640
Technical Manual