Alstom iSTAT M232 - Valid Measurements; System Modes; Connection Mode

User Manual M2x2/EN M/F
iSTAT M2x2 Page 13
7. SYSTEM MODES
7.1 Connection mode
The connection mode of the M2x2 is menu-configurable. The following options are available:
 1b - single phase connection,
 3b - three-phase, three-wire connection with balanced load,
 4b - three-phase, four-wire connection with balanced load,
 3u - three-phase, three-wire connection with unbalanced load
 4u - three-phase, four-wire connection with unbalanced load.
7.1.1 Valid measurements
The following tables list the valid measurements for each connection type.
Key:  – measured ,  − calculated, × − not supported
Connection
TABLE 8-1 : BASIC
MEASUREMENTS
Parameter Unit
1b 3b 3u 4b 4u
Voltage U
1
U1 V

× ×
 
Voltage U
2
U2 V × × ×
 
Voltage U
3
U3 V × × ×
 
Average voltage U
~
U V × × ×
 
Current I
1
I1 A
    
Current I
2
I2 A ×
   
Current I
3
I3 A ×
   
Current I
n
In A ×
   
Total current I
t
I A
    
Average current I
a
Iavg A ×
   
Active power P
1
P1 W

× ×
 
Active power P
2
P2 W × × ×
 
Active power P
3
P3 W × × ×
 
Total active power P
t
P W
    
Reactive power Q
1
Q1 var

× ×
 
Reactive power Q
2
Q2 var × × ×
 
Reactive power Q
3
Q3 var × × ×
 
Phase
Total reactive power Q
t
Q var
    