Specifications

G4500 BLACKBOX PORTABLE OPERATIONAL MANUAL
August 2010
Elspec | The Hardware
17
Recording resolution
1024 samples per cycle
5
, continues
A/D resolution
16Bit normal range + 16Bit extended range
PLL-Synchronized
source
The PLL synchronizes automatically to the best out of
L12 (between L1-L2 lines) and L3-G (between L3 to
earth) measurement channels
PLL Lock Range
42.5 to 69Hz
PLL frequency when
out of range
55Hz
PLL sensitivity
5% of nominal
Indication LEDs
10V AC
Indication
The L1, L2 and L3 voltage input channels are equipped with presence- indica-
tion LEDs. On voltage levels of above 10% of the nominal value the LED light
illuminates in blue.
Auxiliary DC Voltage Channel
The auxiliary DC voltage channel provides an additional and independent input
to the main AC/DC channel DC voltage readings. This is mainly suitable for a
voltage converter DC link side reading while the main voltage channels are on
the grid side.
DC Voltage Specifications
Maximum voltage
±1kV
Maximum continues
voltage
±1kV
Galvanic insulation
from the main AC/DC
voltage channels
3kV
Recording resolution
200mS
5
Defined by PLL frequency