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8.5.8
Technical data
M12352-1 v14
Table 131:
LFPTTR/LCPTTR (26)technical data
Function
Range or value
Accuracy
Reference current
(2-400)% of IBase
±1.0% of I
n
Reference temperature
(0-600)°F, 0 - 300)°C
±
2.0°F, ±2.0°C
Trip time:
2
2
2
2
2
ln
p
Trip
Amb
p
ref
ref
I
I
t
T
T
I
I
I
T
t
-
=
-
-
-
×
é
ù
ê
ú
ê
ú
ê
ú
ê
ú
ë
û
EQUATION13000039 V2 EN-US
(Equation 27)
T
Trip
= set trip temperature
T
Amb
= ambient temperature
T
ref
= temperature rise above ambient at I
ref
I
ref
= reference load current
I = actual measured current
I
p
= load current before overload occurs
Time constant
t
= (1–1000)
minutes
IEC 60255-149,
±5.0% or ±200 ms
whichever is greater
Alarm temperature
(0-400)°F, (0-200)°C
±4.0°F, ±2.0°C
Trip temperature
(0-300)°C, (0-600)°F
±4.0°F, ±2.0°C
Reset level temperature
(0-300)°C, (0-600)°F
±4.0°F, ±2.0°C
8.6
Directional underpower protection GUPPDUP (37)
SEMOD156693-1 v4
8.6.1
Identification
SEMOD158941-2 v4
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Directional underpower protection
GUPPDUP
P <
2
SYMBOL-LL V2 EN-US
37
1MRK 511 408-UUS A
Section 8
Current protection
Phasor measurement unit RES670 2.2 ANSI
251
Technical manual
Содержание Relion RES670
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