91
UMG 508
Network quality parameters
Specifications
(Measurement using current converters ../5A)
Function
Symbol
Accuracy class
Measur. range
Display range
Frequency
f
0.05 (IEC61557-12) 40 .. 70 Hz
40 Hz .. 70 Hz
Phase current
I
0.2 (IEC61557-12)
0.001 .. 7.4 Arms 0 A .. 9999 kA
Neutral cond. current measured IN
0.2 (IEC61557-12)
0.001 .. 7.4 Arms 0 A .. 9999 kA
Neutral cond. current calculated INc
0.5 (IEC61557-12)
0.001 .. 22.2 A
0 A .. 9999 kA
Voltage
U L-N
0.1 (IEC61557-12)
10 .. 600 Vrms
0 V .. 9999 kV
Voltage
U L-L
0.1 (IEC61557-12)
18 .. 1000 Vrms 0 V .. 9999 kV
Short-time flicker, long-time fli. Pst, Plt
-
-
-
Voltage drops (L-N)
Udip
0.2 (IEC61557-12)
10 .. 600 Vrms
0 V .. 9999 kV
Voltage rises (L-N)
Uswl
0.2 (IEC61557-12)
10 .. 600 Vrms
0 V .. 9999 kV
Voltage interruptions
Uint
-
-
-
Voltage unbalance (L-N)
1)
Unba
0.2 (IEC61557-12)
10 .. 600Vrms
0 V .. 9999 kV
Voltage inbalance (L-N)
2)
Unb
0.2 (IEC61557-12)
10 .. 600 Vrms
0 V .. 9999 kV
Voltage harmonics
Uh
cl. 1 (IEC61000-4-7) to 2.5 kHz
0 % .. 100 %
Current harmonics
Ih
cl. 1 (IEC61000-4-7) to 2.5 kHz
0 % .. 100 %
Network signal voltage
MSV
-
-
-
1) Reference to amplitude.
2) Reference to phase and amplitude.