
M3x5/EN M/B
User Manual
Page 20
iSTAT M3x5
8.4
Auxiliary Supply
The
M3x5
family has the option of 2 Universal AC/DC auxiliary voltage supplies with different
voltage ranges.
Parameter
Universal Auxiliary - LOW
Universal Auxiliary - HIGH
AC Voltage
48…..77 VAC
80…..276 VAC
Frequency
45 – 65Hz
40 – 65Hz
DC Voltage
19…..70 VDC
70 – 300 VDC
Burden
< 8 VA
< 8 VA
TABLE 8-1: AUXILIARY SUPPLY
FIGURE 8-4: AUXILIARY SUPPLY - LOW
FIGURE 8-5: AUXILIARY SUPPLY – HIGH
WARNING!
Auxiliary power supply can be LOW range (19-70V
DC
, 48-77V
AC
). Connecting a device with
LOW power supply to a higher voltage will cause device malfunction. Check the devices’
specification before turning it on!
WARNING!
It is imperative that terminal 12, which represents the fourth voltage measurement channel,
is connected to earth pole ONLY. This terminal should be connected to EARTH potential at
all times!
CAUTION
Aux. supply inrush current can be as high as 20A for short period of time (<1 ms). Please
choose an appropriate MCB for connection of aux. supply.
Summary of Contents for iSTAT M355
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