Poznámky redaktora
.65 0.8 0.55 0.5 2.7 0.6
0.45 0.725 0.12. 0,3 ...9 0..05 and 1.5 In
Where I2
t2 0.2 0.5 0.85 0.425 0.5 3.925 0.7 Summary table protections
Protection
Disabling
Trip threshold Trip tim e
T rip
th ld
tolerance (2)
T rip
tim e
tolerance (2)
L
(t= k/I2) □
I1 0.05 and 1.3 0. 1,5
Model 2234 Apparatus Scale
L 2778
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.475 0.975 In
t1 72
108 144 <1>
@ I1
Release between
1.675 0,7 0.5 -
6 8.
(2) These tolerances apply the following conditions:
- self-powered relay full power (without start-up)
- presence auxiliary power supply
- two-phase three-phase power supply
- trip time setting >100ms
For all cases not covered the above hypotheses, the following tolerances apply:
Protections Trip threshold Trip time
L Release between 1.525 0.825 0.2.8 s
± Inq
± 10% In
q
The best the two data:
± 10% ms
(1) The minimum value this trip regardless the type curve set
(self-protection)..2 10% Inq
± 20% In
q
S
(t= k)
H 1.25 20%
S 10% 20%
I 15% 60ms
G 10% 20%
Others 20%
12.5 -
0.. 0,3 .625 -
0.6 0.4 0.775 0.5 9.4 0.875 -
0.575 0.8 Table measurements
Type measurement
Range values measured the relay
Standard operation range
Range Tolerance %
Phase and neutral current 0,05 . 1,5
Earth fault current 0,05 .2.75 -
0.1 0.
