grid - ase · iec/uk curves tms = 1 tms 0.025 to 1.2 td 0.01 to 100 ieee mi ieee vi ieee ei us co8...
TRANSCRIPT
GRID
Zone 3 (reverse offset)
Zone 1
Zone P
Zone 2
Zone 3(without offset)
Zone P (reverse)
Directional (reverse)
Zone 4
Directional (forward)
50Hz, SIR = 5
50% 70% 80% 90%
10
20
30
40
0
Performance:Subcycle up
to 75% Reach
60Hz, SIR = 5
50% 70% 80% 90%
10
20
30
40
0
Performance:Subcycle up
to 75% Reach
Operate
Operate
RestrainRestrain
IEC Standard inverse t = TMS x
IEC Very inverse t = TMS x
IEC Extremely inverse t = TMS x
UK Long time inverse t = TMS x
IEEE Moderately inverse
t = TD x
IEEE Very inverse
IEEE Extremely inverse
US CO8 Inverse
US CO2 Short timeinverse
t = TD x
t = TD x
t = TD x
t = TD x
0.14
(IIs -1)0.02
13.5
(IIs -1)
80
(IIs -1)2
120
(IIs -1)
0.0515
(IIs -1)0.02 + 0.114
19.61
(IIs -1)2 + 0.491
28.2
(IIs -1)2 + 0.1217
5.95
(IIs -1)2 + 0.18
0.16758
(IIs -1)0.02 + 0.11858
IEEE/US curvesTD = 1
IEC/UK curvesTMS = 1
TD 0.01 to 100TMS 0.025 to 1.2
IEEE MIIEEE VI
IEEE EIUS CO8
US CO2
100101
Current (Multiples of Is)
0.1
1
10
100
Ope
ratin
gtim
e (s
)
UK LTI
IEC SI
IEC VI
IEC EI
1000
100
10
1
0.1100101
Current (Multiples of Is)
Ope
ratin
gtim
e (s
)
GRID