Iskra MT440 - 8. APPENDIX B: CALCULATIONS & EQUATIONS

AppendixA:Modbusprotocol
User’sManual 47
Parameter
MODBUS
Register
Start End Type
DEMAND VALUES
DYNAMIC DEMAND VALUES
Time Into Period (minutes) 30174 T1
I1 30175 30176 T5
I2 30177 30178 T5
I3 30179 30180 T5
Apparent Power Total (St) 30181 30182 T5
Active Power Total (Pt) - (positive) 30183 30184 T6
Active Power Total (Pt) - (negative) 30185 30186 T6
Reactive Power Total (Qt) - L 30187 30188 T6
Reactive Power Total (Qt) - C 30189 30190 T6
MAX DEMAND SINCE LAST
RESET
I1 30207 30208 T5
I2 30213 30214 T5
I3 30219 30220 T5
Apparent Power Total (St) 30225 30226 T5
Active Power Total (Pt) - (positive) 30231 30232 T6
Active Power Total (Pt) - (negative) 30237 30238 T6
Reactive Power Total (Qt) - L 30243 30244 T6
Reactive Power Total (Qt) - C 30249 30250 T6
Register table for the normalized actual measurements
Parameter
MODBUS
100% value
Register Type
U1 30801 T16 Un
U2 30802 T16 Un
U3 30803 T16 Un
Uavg (phase to neutral) 30804 T16 Un
U12 30805 T16 Un
U23 30806 T16 Un
U31 30807 T16 Un
Uavg (phase to phase) 30808 T16 Un
I1 30809 T16 In
I2 30810 T16 In
I3 30811 T16 In
φ I
30812 T16
It
I neutral (calculated) 30813 T16 In
I neutral (measured) 30814 T16 In
Iavg 30815 T16 In
Active Power Phase L1 (P1) 30816 T17 Pn
Active Power Phase L2 (P2) 30817 T17 Pn
Active Power Phase L3 (P3) 30818 T17 Pn
Active Power Total (Pt) 30819 T17 Pt
Reactive Power Phase L1 (Q1) 30820 T17 Pn
Reactive Power Phase L2 (Q2) 30821 T17 Pn