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The bits of the MMElectricTraceWeight field have different interpretations for junction features than for edge features. The bit settings on this page apply only to feature classes that have one of the following class model names assigned: Switch, OpenPoint, Fuse, DynamicProtectiveDevice, Transformer, PrimaryMeter, FdrMgrProtective, or FdrMgrLoadpoint. 

For junction feature classes (with one of the above class model names assigned), the bits of the field with the model name MMELECTRICTRACEWEIGHT in the Minerville sample database are interpreted as follows:

Bit 31 is reserved for future use by Telvent.

Bits 30-28 — (These bits are currently the only bits used by ArcFM electric trace tasks.) The status bits specify the normal position of each phase present on switchable devices (e.g., switch, recloser) and depends on three field model names: NORMALPOSITION_A, NORMALPOSITION_B, and NORMALPOSITION_C. The value of 0 means that the device is closed; 1 means that the device is open.

For nonswitchable devices representing customer load points on a primary circuit (e.g., distribution transformers, primary meters), the bit setting depends on the PHASEDESIGNATION field model name. An unset bit (0) indicates that the device is operational on the phase. A set bit (1) indicates the device is not operational on the phase.

For remaining nonswitchable devices, the Status bits 28-30 have no significance.

Bits 27-17 are reserved for future use by Telvent.

Bit 16 — This bit specifies whether a junction serves as a subsidiary source. A set bit (1) indicates that it is a subsidiary source; an unset bit (0) indicates that it is not. This bit is used by Extended Feeder Manager.

Bit 15 — This bit specifies whether a device is gang operated. The value of Y means that it is; any other value (e.g., N, 0) means that it is not. This bit is used only by Responder (NOT Feeder Manager).

Bit 14 — This bit specifies if a device is a transformer and depends on the class model name TRANSFORMER. The value 1 means that it is; 0 means that it is not.

Bit 13 — This bit specifes that a device serves as the power source (or ultimate source) for a circuit because it is related to the object class with the class model name CIRCUITSOURCE. The value 1 means that it is; 0 means that it is not.

Bit 12 — This bit indicates a device that can prevent the flow of power between two lines and depends on the class model names FDRMGRPROTECTIVE and SWITCH. Any device with one of these model names will have the switch flag bit set to 1.

Bit 11 — This bit indicates a device that represents a point of power delivery and depends on the class model name FDRMGRLOADPOINT.

Bits 10-8 — These bits indicate whether a device has overcurrent protection on any phase and depends on the class model name FDRMGRPROTECTIVE and field model name PHASEDESIGNATION. A set bit indicates overcurrent protection is present on the phase.

Bits 7-6 are reserved for future use by Telvent.

Bits 5-3 — These bits indicate whether a device is operational on each phase and depend on the field model name PHASEDESIGNATION. A value of 0 means that the device is operational on the phase. A value of 1 indicates the device is not operational on the phase. A single phase fuse on phase A would have a value of 110 for these bits.

Bits 2-0 are reserved for future use by Telvent.

Byte 3 (MSB)
bit 31	bit 30	bit 29	bit 28	bit 27	bit 26	bit 25	bit 24
reserved	Normal Status Phase C	Normal Status Phase B	Normal Status Phase A	reserved

 

Byte 2
bit 23	bit 22	bit 21	bit 20	bit 19	bit 18	bit 17	bit 16
reserved							Subsidiary Source

 

Byte 1
bit 15	bit 14	bit 13	bit 12	bit 11	bit 10	bit 9	bit 8
Flag: Gang Operated	Flag: Transformer	Flag: Circuit Source	Flag: Switch	Flag: Load Point	Flag Phase C Protective Device	Flag Phase B Protective Device	Flag Phase A Protective Device

 

Byte 0 (LSB)
bit 7	bit 6	bit 5	bit 4	bit 3	bit 2	bit 1	bit 0
reserved	reserved	Phase C Exists	Phase B Exists	Phase A Exists	reserved

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