Schweitzer Engineering Laboratories SEL-311B, Instruction Manual

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Date Code 20011205 Distributed Network Protocol (DNP) 3.00 H-11
SEL-311B Instruction Manual
DNP Object Type Index Description
30,32 50, 51 A-phase MVARhr in and out.
30,32 52, 53 B-phase MVARhr in and out.
30,32 54, 55 C-phase MVARhr in and out.
30,32 56, 57 3-phase MVARhr in and out.
30,32 58–62 Demand IA, IB, IC, IG, and 3I2 magnitudes.
30,32 63–66 A-, B-, C-, and 3-phase demand MW in.
30,32 67–70 A-, B-, C-, and 3-phase demand MVAR in.
30,32 71–74 A-, B-, C-, and 3-phase demand MW out.
30,32 75–78 A-, B-, C-, and 3-phase demand MVAR out.
30,32 79–83 Peak demand IA, IB, IC, IG, and 3I2 magnitudes.
30,32 84–87 A-, B-, C-, and 3-phase peak demand MW in.
30,32 88–91 A-, B-, C-, and 3-phase peak demand MVAR in.
30,32 92–95 A-, B-, C-, and 3-phase peak demand MW out.
30,32 96–99 A-, B-, C-, and 3-phase peak demand MVAR out.
30,32 100–102 Breaker contact wear percentage (A, B, C).
30 103 Fault type (see table for definition).
30 104 Fault location.
30 105 Fault current.
30 106 Fault frequency.
30 107 Fault settings group.
30 108 Fault recloser shot counter.
30 109–111 Fault time in DNP format (high, middle, and low 16
bits).
40,41 00 Active settings group.
Binary inputs (objects 1 and 2) are supported as defined by the previous table. Binary inputs 0–
499 and 1000–1023 are scanned approximately once per second to generate events. When time
is reported with these event objects, it is the time at which the scanner observed the bit change.
This may be significantly delayed from when the original source changed and should not be used
for sequence-of-events determination.
In order to determine an element’s point index, consult the Relay Word Bits table in Section 9:
Setting the Relay. Locate the element in question in the table and note the Relay Word row
number. From that row number, subtract the row number of the first Relay Word row (usually 2)
and multiply that result by 8. This is the index of the right-most element of the Relay Word row
of the element in question. Count over to the original element and add that to get the point index.
Binary Inputs 500–999 are derived from the Sequential Events Recorder (SER) and carry the
time stamp of actual occurrence. Static reads from these inputs will show the same data as a read