Measurements; Introduction; Supported Measurements; Available Connections - Iskra MC320 User Manual

MEASUREMENTS
MEASUREMENTS
Introduction
In the following chapters operation of the device is explained more in detail.
Supported measurements
Measurements support regarding the device type is described in chapter Type differences, pages 11. Selection of
supported measurements of individual instrument type is changed with the connection settings.
Available connections
Different electric connections are described more in detail in chapter Electric connection on page 15. Connections
are marked as follows:
‐ Connection 1b (1Wb) – Single phase connection
‐ Connection 3b (1W3b) – Three phase, three wire connection with balanced load
‐ Connection 4b (1W4b) – Three phase, four wire connection with balanced load
‐ Connection 3u (2W3u) – Three phase, three wire connection with unbalanced load
‐ Connection 4u (3W4u) – Tree phase, four wire connection with unbalanced load
PLEASE NOTE
Measurements support depends on connection mode and the device type.
Calculated measurements are only informative.
Survey of supported measurements regarding connection mode
All measurements, with designations can be displayed on customized screens.
Basic measurements
Voltage U
1
Voltage U
2
Voltage U
3
Average voltage U
Current I
1
Current I
2
Current I
3
Current I
n
Total current I
t
Average current I
a
Active power P
1
Active power P
2
Active power P
3
Total active power P
Reactive power Q
Reactive power Q
Reactive power Q
Total reactive power Q
‐ serial

Measuring centres – MC320, MC330, MC350 & MC350H ‐ User's Manual
Designat. Unit 1b 3b 3u 4b 4u
U1 V
U2 V
U3 V
~
U V
I1 A
I2 A
I3 A
Inc A
I A
Iavg A
P1 W
P2 W
P3 W
P W
t
Q1 var
1
Q2 var
2
Q3 var
3
Q var
t
‐ option ‐ not supported
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