CIRCUTOR CVM-BD Series User Manual
Page 29
-- Supply network analyzers CVM-BD-420-4 & CVM-BD-420-8 -- M98132301-20 --- Page Nº 28
1.- Output calculation:
Resolution = 20
−
Zero .
F. scale - offset
Offset & f. scale
= defined by the
user
Zero
= 0 mA or 4 mA
MA = (( F. scale - offset ) x Resolution) + Zero
MV = mA x ohms
mV
(100 ohms)
= mA x 100
-
Maximum load is:
CVM-BD-420-4: ................400 Ω
CVM-BD-420-8: ................300 Ω
-
The maximum allowable offset is a value equal to the 90% of the full scale.
-
Output of the power factor parameter ( P.F.):
0/4 mA ----------------------------
-------------------------20 mA
+0.00 Ind. 1.00 Cap. – 0.00
2.- Default full scale:
Parameter
Condition
Full scale ( 20 mA )
Voltages
Primary < 500
Primary x 500 /secondary
(V)
Primary > 500
Voltage primary
Currents (A)
Current primary
Powers
For one phase
voltage primary x current primary / 1000
(kW)
Three phase value
voltage primary x current primary x 3 / 1000
Frequency (Hz)
65
P.F.
–
0.00