GE Multilin DTP-B, Инструкция по эксплуатации

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4. FUNCTIONS DESCRIPTION
GEK-106243E DTP Digital Transformer Protection 4-5
4.5 INPUTS AND OUTPUTS
4.5.1 DIGITAL INPUTS
The DTP has 7 digital inputs (with a common), all of them configurable by the user with the GE_INTRO
configuration software. One of the following values can be assigned to each input:
•
Unused input
•
External Trigger (P)
•
Table 0 Selection (L)
•
Table 1 Selection (L)
•
Latching relay reset. (L)
•
Buchholz Alarm (L)
•
Buchholz Trip (L)
•
Overtemperature Alarm (L)
•
Overtemperature Trip (L)
•
Trip block (L) (Affecting only functions 87 and 87B)
The external connections diagram, in figure 1, shows the default inputs configuration.
NOTE: (P) means that the function assigned to the input is activated by pulse, and (L) means that the function is
activated by level, that is, while power supply is applied to the input, and is deactivated when this power supply
stops.
4.5.2 OUTPUTS
The DTP has 13 outputs as follows:
•
4 trip
•
1 alarm
•
8 configurable outputs.
The technical characteristics of the outputs are explained in section 6.
The configurable outputs can be programmed using a logic based on the internal protection states (pick-ups, trips,
alarms, etc.). The internal states of the DTP can be used to carry out logical operations NOT, AND, and OR. This
gives a great flexibility to the unit.
The output configuration is done using different levels. At the first level it is possible to use AND gates of up to 16
signals. The output is incorporated into the states matrix so that it can in turn be used in next AND gates of up to
16 inputs. This process can continue until the 16 ANDs are used.
Once the AND gates have been configured it is possible to create a second level with OR gates of 16 inputs
limited to the established groups of bytes, and whose logical outputs are assigned to physical outputs of the unit.
The default output configuration is included in the external connections diagram in figure 1.