How do I interpet DNP data?
Understanding the DNP values from DMMS 425 (DMMS300+) meters.The following explains how to interpret DNP raw data to match the readings on display. This will be explained with more detailed examples in this document. Refer DNP manual (DNP3.0forFutura_DMRev.1.14.pdf) for more information.The followings are the values returned from DMMS425 by Class 0 poll.Example 1: Points 1,2,3 and 19 are current readings. Appendices from the DNP manual explains well how to interpret these readings. For the point 0, use the equations to find out the secondary value.Secondary value = (Analog Input/32768) * Secondary Scale = (212 / 32768) * 10 = 0.064697265625.Now multiply this number with CT ratio. The ratio numerator is from point 15 and ratio denominator is from point 16. Therefore,The Primary reading = 0.064697265625 * (2000/5) = 25.87890625.The value 26A is on the Display for Phase A current.Example 2: Points 4,5,6 are phase-to-neutral voltage readings. Points 29-31 are phase-to-phase voltage reading
Understanding the DNP values from DMMS 425 (DMMS300+) meters. The following explains how to interpret DNP raw data to match the readings on display. This will be explained with more detailed examples in this document. Refer DNP manual (DNP3.0forFutura_DMRev.1.14.pdf) for more information. The followings are the values returned from DMMS425 by Class 0 poll. Example 1: Points 1,2,3 and 19 are current readings. Appendices from the DNP manual explains well how to interpret these readings. For the point 0, use the equations to find out the secondary value. Secondary value = (Analog Input/32768) * Secondary Scale = (212 / 32768) * 10 = 0.064697265625. Now multiply this number with CT ratio. The ratio numerator is from point 15 and ratio denominator is from point 16. Therefore, The Primary reading = 0.064697265625 * (2000/5) = 25.87890625. The value 26A is on the Display for Phase A current. Example 2: Points 4,5,6 are phase-to-neutral voltage readings. Points 29-31 are phase-to-phase voltage
