Poznámky redaktora
0,2
Instantaneous active power the
single phase and total system
0,02 ..5s t10< step 0.01xUn
0..5s t12< step 0...01 xUn
0.4xUn
step 0.2.95xUn
step 0... 0,3 1,5
External ground fault current
(external source round return)
0,05 ...2 Table easurem ents
Type measurement Standard operation range
Range values measured the relay Range Tolerance %
Phase and neutral currents 0,05 ..2..
50/158
. 0,3 . 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 . .2xUn
step 0... 0,3 2,5
Instantaneous reactive power the
single phase and total system
0,02 .5s t13< step 0...12...1xUn U10< 0..01 fn
0.1xPn
step 0.5
Model L2234 Apparatus Scale
L 2778
Doc-No- 2
Page No..12.02 Pn
0.99 fn
step 0. 2.1s t8< step 0..5s t11< step 0.1s t9< step 0.1s 10% The data
± 10% s
UF 0.. 2,5
Apparent energy 0,02 .5xUn 0..3xPn< P11<-0...01 fn
0. 0,3 2,5
Instantaneous apparent power on
the single phase and total system
0,02 .9. 0,3 ..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. 0,3 2,5
Active energy 0,02 . 1,1x690 Vconc conc .1s The data
± 10% s
13.13... 1,1x690 Vconc conc .05xUn U9< 1.05 Un
0. 1,1x690 Vconc conc 1
Residual voltage
(for systems with neutral only)
10 .9.1s data
± 10% s
O V
(t= k)
H 1. 0,3 1,5
Internal ground fault current
(internal source round return)
0,05 ...1s The data
± 10% s
RV
(t= k)
H 0.. 1,1x690 Vconc conc 1
Peak factor 0,1 0,3 1,5
Total power factor 0,1 0,5 2,5
Mains frequency ...5s The data
± 10% s
(tR
P
)
H 0.9 f12< 0. 0,3 2,5
Reactive energy 0,02 ...01fn f13< 1,1fn
step 0.
