Poznámky redaktora
0,3 2,5
Instantaneous reactive power the
single phase and total system
0,02 .5xUn 0....2 Table easurem ents
Type measurement Standard operation range
Range values measured the relay Range Tolerance %
Phase and neutral currents 0,05 .01 xUn
0..9 f12< 0.2xUn
step 0. 0,3 2,5
Active energy 0,02 . 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 .05xUn U9< 1.. 1,1x690 Vconc conc .1s The data
± 10% s
O 1..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..2.. 0,3 .9..5s t12< step 0.3xPn< P11<-0.1xPn
step 0.1s The data
± 10% s
13.9...1s data
± 10% s
O V
(t= k)
H 1..5
Model L2234 Apparatus Scale
L 2778
Doc-No- 2
Page No.1s t9< step 0..5s t11< step 0.. 0,3 2,5
Reactive energy 0,02 ..5s t10< step 0..1s The data
± 10% s
RV
(t= k)
H 0.1xUn U10< 0.13.05 Un
0..01 fn
0. 0,3 .
50/158
.01xUn
0. 0,3 2,5
Instantaneous apparent power on
the single phase and total system
0,02 ..4xUn
step 0..12..95xUn
step 0. 0,3 1,5
Internal ground fault current
(internal source round return)
0,05 .. 1,1x690 Vconc conc 1
Residual voltage
(for systems with neutral only)
10 ..5s The data
± 10% s
(tR
P
)
H 0. .2... 2,5
Apparent energy 0,02 .. 2. 1,1x690 Vconc conc 1
Peak factor 0,1 0,3 1,5
Total power factor 0,1 0,5 2,5
Mains frequency . 1,1x690 Vconc conc .01 fn
0...12.5s t13< step 0. 0,2
Instantaneous active power the
single phase and total system
0,02 ..99 fn
step 0....02 Pn
0. 0,3 1,5
External ground fault current
(external source round return)
0,05 ...1s t8< step 0.01fn f13< 1,1fn
step 0..1s 10% The data
± 10% s
UF 0
