Installation Manual Owner manual

PM180 Substation Automation Unit
30
Parameter Full Scale @ Input
Range
Accuracy Range
% Reading % FS Conditions
Reactive energy
1
Import & Export
Accuracy Class 0.2% 0 to 999,999.999 Mvarh
Apparent energy
1
Accuracy Class 0.2% 0 to 999,999.999 MVAh
Volt-hours Class 0.2 20% - 120% FS 0 to 999,999.999 kVh
Ampere-hours Class 0.2 10% - 200% FS 0 to 999,999.999 kAh
Symmetrical
components
Voltage FS
Current FS
Current FS
1
1
3
10% - 120% FS
10% - 200% FS
200% - 2000%FS
Phasor angles 1 degree
Key: PT - external potential transformer ratio  @ 80% to 120% of voltage FS and 1% to 200% of
current FS
CT - primary current rating of external current transformer
FSV - voltage full scale; FSI - current full scale
V
f
- fundamental voltage; I
f
- fundamental current
Notes
1. Accuracy is expressed as ± (percentage of reading + percentage of full scale) ± 1 digit. This does not
include inaccuracies introduced by the user's potential and current transformers. Accuracy calculated at 1
second average.
2. Specifications assume: voltage and current waveforms with THD ≤ 5% for kvar, kVA and PF; reference
operating temperature: 20°C - 26°C.
3. Measurement error is typically less than the maximum error indicated here.
1
Specified Accuracy Class Only for PM180-5A and PM180-1A models (internal CT), for PM180-
DFR model accuracy meets class 1