MI 2892 Power Master
Recording Practice and Instrument Connection
127
Iseq
123
Current sequence is correct, but phase
angle between currents is more than 120
0
± 60
0
.
This is valid situation if there are
large inductive/capacitive load in
the network. However this can be
also
caused
by
improper
instrument connection. Check
clamp direction (
icon is
present in status bar) and see if
current channel correspond to the
voltage channel (if current I
1
is
measured on voltage U
1
).
Iseq
321
Current sequence is reverse. Unbalance
and
power
measurement
are
compromised.
Switch current clamps I
2
and I
3
in-
between.
Iseq
-
Current phase angle between currents is
not 120
0
± 60
0
. Unbalance and power
measurement are compromised.
Check voltage leads, and check if
selected Connection correspond
to the actual network.
Table 4.3: Keys in Connection check screen
DATE/TIME
Open Date/time setup screen (for quick real-time clock check)
VIEW
Selects which measurement setup should be considered:
Consumed or Generated.
AUTOSET I
Autoset Clamp current range.
LIMITS
Check limits for measured parameters:
Returns to the “RECORDERS” submenu.
4.2.5
Temperature probe connection
Temperature measurement is performed using smart temperature probe connected to the any current
input channel. In order to activate temperature probe recognition, following procedure should be
followed for the first time:
1.
Turn on the instrument
F1
F2
F3
F4
