Poznámky redaktora
1s t8< step 0.. 0,2
Instantaneous active power the
single phase and total system
0,02 . 0,3 1,5
Internal ground fault current
(internal source round return)
0,05 .02 Pn
0.. 0,3 2,5
Reactive energy 0,02 . 1,1x690 Vconc conc 1
Residual voltage
(for systems with neutral only)
10 . 1,1x690 Vconc conc . 0,3 .2 Table easurem ents
Type measurement Standard operation range
Range values measured the relay Range Tolerance %
Phase and neutral currents 0,05 ..1s The data
± 10% s
RV
(t= k)
H 0...5
Model L2234 Apparatus Scale
L 2778
Doc-No- 2
Page No.. 0,3 ...1s data
± 10% s
O V
(t= k)
H 1.12....01fn f13< 1,1fn
step 0. .5s t12< step 0. 0,3 2,5
Instantaneous apparent power on
the single phase and total system
0,02 .3xPn< P11<-0.2.1xUn U10< 0.5s t11< step 0.5s t10< step 0...5xUn 0.. 0,3 1,5
External ground fault current
(external source round return)
0,05 ..1s The data
± 10% s
13....05 Un
0.9 f12< 0.
50/158
.01 fn
0.01xUn
0. 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 .5s t13< step 0.13..99 fn
step 0..01 xUn
0.12.4xUn
step 0. 2,5
Apparent energy 0,02 .1xPn
step 0. 0,3 2,5
Active energy 0,02 . 2..9.95xUn
step 0.. 0,3 2,5
Instantaneous reactive power the
single phase and total system
0,02 .1s t9< step 0....01 fn
0....1 Summary the additional protection functions for the PR122/P with the optional PR120/V module
Protection
Disabling
Disabling
ofTRIPonly
Zone
selectivity
Start-upthreshold
or
£
e
E al
£ er
h
1-
Threshold Range Time Range olerance
threshold (2)
Tim e
Tolerance (2)
UV
(t k)
0 0..1s The data
± 10% s
O 1.2..05xUn U9< 1.5s The data
± 10% s
(tR
P
)
H 0..2xUn
step 0.1s 10% The data
± 10% s
UF 0.. 1,1x690 Vconc conc .9.. 1,1x690 Vconc conc 1
Peak factor 0,1 0,3 1,5
Total power factor 0,1 0,5 2,5
Mains frequency .
