Signals; Settings; Operation Principle - ABB REC650 Technical Manual

Section 9
Secondary system supervision
9.1.4
9.1.5
Table 151: CCSRDIF Group settings (basic)
Name
Operation
IMinOp
Table 152: CCSRDIF Group settings (advanced)
Name
Ip>Block
Table 153: CCSRDIF Non group settings (basic)
Name
GlobalBaseSel
9.1.6
192

Signals

Table 149: CCSRDIF Input signals
Name
I3P
IREF
BLOCK
Table 150: CCSRDIF Output signals
Name
FAIL
ALARM

Settings

Values (Range) Unit
Off -
On
5 - 200 %IB
Values (Range) Unit
5 - 500 %IB
Values (Range) Unit
1 - 6 -

Operation principle

Current circuit supervision CCSRDIF compares the absolute value of the vectorial
sum of the three phase currents |ΣIphase| and the numerical value of the residual
current |Iref| from another current transformer set, see figure 87.
The FAIL output will be set to a logical one when the following criteria are fulfilled:
Type Default Description
GROUP - Three phase group signal for current inputs
SIGNAL
GROUP - Group signal for current reference
SIGNAL
BOOLEAN 0 Block of function
Type Description
BOOLEAN Detection of current circuit failure
BOOLEAN Alarm for current circuit failure
Step Default
- Off
1 20
Step Default
1 150
Step Default
1 1
1MRK 511 287-UEN A
Description
Operation Off / On
Minimum operate current differential level
in % of IBase
Description
Block of the function at high phase
current, in % of IBase
Description
Selection of one of the Global Base Value
groups
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