Alstom iSTAT M232 - 100% Values Calculations for Normalized Measurements

User Manual M2x2/EN M/F
iSTAT M2x2 Page 62
MODBUS
Parameter
Register Type
100% value
MD Apparent Power S
30858 T16 Pt
MD Current I
1
30859 T16 In
MD Current I
2
30860 T16 In
MD Current I
3
30861 T16 In
Dynamic Demand Values
MD Real Power P (positive)
30862 T16 Pt
MD Real Power P (negative)
30863 T16 Pt
MD Reactive Power Q − L
30864 T16 Pt
MD Reactive Power Q − C
30865 T16 Pt
MD Apparent Power S
30866 T16 Pt
MD Current I
1
30867 T16 In
MD Current I
2
30868 T16 In
MD Current I
3
30869 T16 In
Energy
Energy Counter 1 30870 T17
Energy Counter 2 30871 T17
Energy Counter 3 30872 T17
Energy Counter 4 30873 T17
Actual counter
value MOD
20000 is
returned
Active Tariff 30879 T1
Internal Temperature 30880 T17 100°
17.5 100% values calculations for normalized measurements
Un =
(R40147 / R40146) * R30015 * R40149
In = (R40145 / R40144) * R30017 * R40148
Pn = Un*In
It = In Connection Mode: 1b
It = 3*In Connection Modes: 3b, 4b, 3u, 4u
Pt = Pn Connection Mode: 1b
Pt = 3*Pn Connection Modes: 3b, 4b, 3u, 4u
Fn = R40150
Register Content Type
30015 Calibration voltage T4
30017 Calibration current T4