Minimum/Maximum Values of Real-Time Measurements

Minimum/Maximum Measurements Rule

Minimum and maximum measurements take into account the relative value of real-time measurements. Therefore the following rule applies:
-3800<-400<0<200<600.

In this case:

the minimum value = -3800
the maximum value = 600

NOTE: This rule does not apply for the power factor (PF) and for the fundamental power factor (cosϕ):

PFmax (or cosϕ max.) is obtained for the smallest positive value of
PF (or cosϕ).
PFmin (or cosϕ min.) is obtained for the highest negative value of
PF (or cosϕ).

The reset minimum/maximum command (command code = 46728) configures the content of the minimum/maximum real-time measurements registers.

Minimum of Real-Time Measurements

Registers 1300 to 1599 hold the minimum values of real-time metering parameters:

Available only with ETV trip system.
The register of the minimum value of a real-time metering parameter is equal to the register of the real-time metering parameter plus 300.

Examples:
- Register 1300 holds the minimum value of the phase-to-phase voltage V12 (register 1000).
- Register 1316 holds the minimum value of the current on phase 1
  (register 1016).
The order of the registers is the same as that of the real-time metering variables.
The scale factors of the minimum values are the same as those of the real-time metering parameters.
The minimum values of arithmetic means and unbalance voltage (registers 1306–1315) and for unbalance current (registers 1327 to 1332) are not available with ETV trip system.

Maximum of Real-Time Measurements

Registers 1600 to 1899 hold the maximum values of real-time metering parameters:

Available only with ETV trip system.
The register of the maximum value of a real-time metering parameter is equal to the register of the real-time metering parameter plus 600.

Examples:
- Register 1600 holds the maximum value of the phase-to-phase voltage V12 (register 1000).
- Register 1616 holds the maximum value of the current on phase 1 (register 1016).
The order of the registers is the same as that of the real-time metering variables.
The scale factors of the maximum values are the same as those of the real-time metering parameters.
The maximum values of arithmetic means and unbalance voltage (registers 1606–1615) and for unbalance current (registers 1627 to 1632) are not available with ETV trip system.