Subaru impreza 2017 - Outside Temperature Indicator

2.0
480
0.035
32 0.5
n
n
k
t
UU
U








IECEQUATION2423 V2 EN-US (Equation 29)
The type C curve is described as:
3.0
480
0.035
32 0.5
n
n
k
t
U U
U
×
= +
æ ö
- >
× -
ç ÷
>
è ø
IECEQUATION2425 V1 EN-US (Equation 30)
The customer programmable curve is defined by the below equation, where A, B,
C, D, k and p are settings:
p
n
n
k A
t D
U U
B C
U
×
= +
æ ö
- >
× -
ç ÷
>
è ø
EQUATION1439 V2 EN-US (Equation 31)
When the denominator in the expression is equal to zero the time delay will be
infinity. There will be an undesired discontinuity. Therefore, a tuning parameter
CrvSatn is set to compensate for this phenomenon. In the voltage interval Un> up
to Un> · (1.0 + CrvSatn/100) the used voltage will be: Un> · (1.0 + CrvSatn/100).
If the programmable curve is used this parameter must be calculated so that:
0
100
CrvSatn
B C× - >
EQUATION1435 V1 EN-US (Equation 32)
The highest phase (or phase-to-phase) voltage is always used for the inverse time
delay integration, see figure 74. The details of the different inverse time
characteristics are shown in section
"Inverse characteristics".
1MRK 505 384-UEN A Section 7
Voltage protection
Breaker protection REQ650 2.2 IEC 183
Technical manual