Poznámky redaktora
525 0.2 0..975 In
t1 72
108 144 <1>
@ I1
Release between
1.. 1,5
Model 2234 Apparatus Scale
L 2778
Doc No- 2
Page No.6 0.775 0.2 10% Inq
± 20% In
q
S
(t= k)
H 1.12..55 0.5 2.05 and 1.7 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 0.475 0..5 3.725 0..575 0. 0,3 . 0,3 .4 0.5 9..5 -
6 8.875 -
0.8 Table measurements
Type measurement
Range values measured the relay
Standard operation range
Range Tolerance %
Phase and neutral current 0,05 .2.5 -
0.
34/158
.65 0.925 0.05 and 1..5 0.8 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).2.45 0.8 0.25 20%
S 10% 20%
I 15% 60ms
G 10% 20%
Others 20%
12.675 0,7 0.825 0.3 0.85 0.9 0.75 -
0.4 0..5 In
Where I2
t2 0.625 -
0.425 0.1 0.6
0.7 0.
(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. 1,5
Earth fault current 0,05
