Iskra MT440 - 5.1 Introduction; 5.2 Supported measurements; 5.3 Available connections

Measurements
User’sManual 27
5.1 Introduction
In the following chapters the device operation is explained more in detail.
5.2 Supported measurements
Selection of supported measurements is changed with the connection settings. All supported
measurements could be read via communication (MiQen).
5.3 Available connections
Different electric connections are described more in detail in chapter Electric connection on page
10. Connections are marked as follows:
−Connection 1b (1W) − Single phase connection
−Connection 3b (1W3) − Three-phase – three-wire connection with balanced load
−Connection 4b (1W4) − Three-phase – four-wire connection with balanced load
−Connection 3u (2W3) − Three-phase – three-wire connection with unbalanced load
−Connection 4u (3W4) − Tree-phase – four-wire connection with unbalanced load
Note
Measurements support depends on connection mode the instrument type.
Calculated measurements are only informative.
Survey of supported measurements regarding connection mode
Basic measurements Designat. Unit 1b 3b 3u 4b 4u
Phase
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
Inc 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 × × × ○ ●
Total reactive power Q
t
Q var ● ● ● ○ ●
● – supported ○ − calculated × − not supported