ABB RELION REX640 - Page 1437

Function Settings for limit value supervision
Low limit –
High-high limit A Hi high limit res
Low-low limit –
Frequency measurement (FMMXU) High limit F high limit
Low limit F low limit
High-high limit F high high limit
Low-low limit F low low limit
Residual voltage measurement (RESVMMXU) High limit V high limit res
Low limit –
High-high limit V Hi high limit res
Low-low limit –
Phase sequence current measurement
(CSMSQI)
High limit Ps Seq A high limit ,
Ng Seq A high limit ,
Zro A high limit
Low limit Ps Seq A low limit , Ng
Seq A low limit , Zro A
low limit
High-high limit Ps Seq A Hi high Lim ,
Ng Seq A Hi high Lim ,
Zro A Hi high Lim
Low-low limit Ps Seq A low low Lim ,
Ng Seq A low low Lim ,
Zro A low low Lim
Phase sequence voltage measurement
(VSMSQI)
High limit Ps Seq V high limit ,
Ng Seq V high limit ,
Zro V high limit
Low limit Ps Seq V low limit , Ng
Seq V low limit , Zro V
low limit
High-high limit Ps Seq V Hi high Lim ,
Ng Seq V Hi high Lim ,
Zro V Hi high Lim
Low-low limit Ps Seq V low low Lim ,
Ng Seq V low low Lim ,
Three-phase power and energy measurement
(PEMMXU)
High limit –
Low limit –
High-high limit –
Low-low limit –
Deadband supervision
The deadband supervision function reports the measured value according to
integrated changes over a time period. In Figure 804 the values are reported at
points Y1, Y2, Y3 and Y4. There is no value report at the end of |A3 + A4 + A5 + A6
+ A7| because the positive and negative areas counteract each other. The integrated
changes, |A3 + A4 + A5 + A6 + A7|, equal approximately zero.
1MRS759142 F
Measurement functions
REX640
Technical Manual
1437