Poznámky redaktora
. 1,1x690 Vconc conc . 2,5
Apparent energy 0,02 .16 Table easurem ents
Type measurement Standard operation range
Range values measured the relay Range Tolerance %
Phase and neutral currents 0,05 .... 0,3 2,5
Instantaneous reactive power the
single phase and total system
0,02 . 0,3 2,5
Instantaneous apparent power on
the single phase and total system
0,02 ....
These tolerances are based the following assumptions:
- self-supplied relay full power (without start-up)
- presence auxiliary power supply
- two-phase three-phase power supply
- preset trip time 100 ms
no-trip time
the protection disabled for current values greater than 4In, where 0.5 In,
greater than In, where 0. 1,1x690 Vconc conc 1
Peak factor 0,1 ..
Max trip time
For all cases not covered the above hypotheses, the following tolerance values
apply:
Protections Trip threshold Trip time
L Release between 1... 0,5 2,5
Mains frequency .5 0. 1,1x690 Vconc conc .05 and 1.25 20%
S 10% 20%
I 15% 60ms
G 10% 20%
Others 20%
(1)
(2)
(5)
14...The minimum value this trip regardless the type curve set (self
protection)... 0,3 1,5
Phase-to-phase and phase voltages
(measured the module's input
and thus independent the precision
relating the use any VT)
10 . 2. 0,2
Instantaneous active power the
single phase and total system
0,02 ...9. 0,3 1,5
External ground fault current
(external source round return)
0,05 .5
Model 2234 Apparatus Scale
L 2778
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..2.8 and greater than where I4> 0......... 0,3 1,5
Internal ground fault current
(internal source round return)
0,05 .. 0,3 2,5
Reactive energy 0,02 . 0,3 .... 0,3 .... 0,3 1,5
Total power factor 0,1 ...8 In.. 0,3 2,5
Active energy 0,02 .. 1,1x690 Vconc conc 1
Residual voltage
(for systems with neutral only)
10
