EKF VA-99M EKF - Page 11

11
Table 6 - Technical data of VA-99M with electromagnetic trip unit
Parameters
Values
   
Rated operating
voltage Ue, В
DC
250 V
АС
400 V
АС
690 V
DC
250 V
АС
400 V
АС
690 V
АС
400 V
АС
690 V
АС
400 V
АС
690 V
Ultimate short-
circuit breaking
capacity Icu, kА
10 35 10 10 35 10 42 15 35 30
Service short-circuit
breaking capacity
Ics, kA
6 26 5 6 25 5 31,5 8 35 15
Rated currents In, А 32, 63, 100, 125 160, 250 400 630
Min. mechanical
endurance, O-C
cycles
7000 7000 4000 4000
Min. electrical
endurance, O-C
cycles
2000
Table 5.2 - Ktsd Settings
Action
0.9
Isd~1.1Isd
Take action
during
≤0.9 Isd no action
>1.1Isd
action
Fixed time
characteristics
I>1.5Isd
& I<Ii
Encoder settings
tsd (s)
0.06 0.1 0.2 0.3
≥1.1 Isd
T
0.06 0.1 0.2 0.3
OFF
(without
protec-
tion)
Error ±0.02 ±0.03 ±0.04 ±0.06
Reverse time
functions
I>Isd
&
I≤1.5Isd
≥1.1 Isd
T
(1.5Isd)
2
tsd
I
2
T=
Error ±20%