ABB REF 54 Series Technical Reference Manual page 105

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Technical Reference Manual, General
CBFP
Standard
Info No
85
CBFP
Breaker failure
CBFP
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Circuit breaker failure protection (CBFP) is represented with the information type
number 85 in the device function type.
The user cannot effect the event flow from the IEC 60870-5-103 protocol by
adjusting the event masks of the REF 54_ applications.
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IEC 60870-5-103 settings are not seen on the Relay Setting Tool.
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Parameters can be adjusted by using the REF 54_ display.
The measurement (analogue) values are transported to the control system as a
response to a class 2 request command. The class 2 data is always cyclically updated
(COT=2). Please refer to Table 12.6.-3 on page 115 for measurement data.
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The IEC 60870-5-103 standard defines the measurands to be transmitted as either
Meas I (typeId 3) or Meas II (typeId 9) ASDU frames. According to the standard,
the Meas I ASDU can have four different profiles and Meas II has one profile. These
five profiles are supported in the REF 54_. In addition, there are twelve more private
class 2 ASDU frames defined. The user can choose which one of these twelve
measurand sets to use. The measurand set number (1...17) can be adjusted via the
"Frame type" parameter.
RTD card's measurand can be transmitted on its own frame. If RTD data frame
parameter is set to one, every other class 2 data is a RTD data frame. The alternate
frame is RTD data frame and the another one is normal user selectable data frame.
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The IEC 60870-5-103 standard defines the scale (max range) of the measurements
to be either 1.2 or 2.4 times the rated value for the measurement. The selection
between the 1.2 scaling or the 2.4 scaling can be done via the "Scale factor"
parameter. In the REF menu values are 0 = 1.2 and 1 = 2.4.
In order that the analogue (measurement) data becomes available on the
IEC 60870-5-103 interface, the measurement applications must have the
measurement threshold with a proper threshold value selected.
Start
Stage Low
>
Trip
Start
Stage High
>>
Trip
Start
Stage Inst
>>>
Trip
5() B
Info No
General start 84*
90
Trip >
Trip >>
91
*) Interrogable
Start Stage >> 94*
Start Stage >>> 96*
Trip >>>
98
ProtMapPrin
105