Slope = 0.8
Slope = 1
Operation
area
I
MinOp
99000068.vsd
phase
ref
|
å
I
| - | I
|
phase
ref
|
å
I
| + | I
|
IEC99000068 V1 EN
Figure 301:
Operate characteristics
Due to the formulas for the axis compared, |
S
Iphase | - |I ref | and |
S
I
phase | + | I ref | respectively, the slope can not be above 2.
11.1.3
Function block
ANSI05000389-2-en.vsd
CCSRDIF (87)
I3P*
IREF*
BLOCK
FAIL
ALARM
ANSI05000389 V2 EN
Figure 302:
CCSRDIF (87) function block
11.1.4
Input and output signals
Table 306:
CCSRDIF (87) Input signals
Name
Type
Default
Description
I3P
GROUP
SIGNAL
-
Group signal for three phase current input
IREF
GROUP
SIGNAL
-
Reference current signal input
BLOCK
BOOLEAN
0
Block of function
1MRK505222-UUS C
Section 11
Secondary system supervision
599
Technical reference manual
Summary of Contents for Relion 670 series
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