HT COMBI521, Руководство пользователя

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COMBI521
EN - 90
6.11 PQA: MEASURING MAINS PARAMETERS IN SINGLE-PHASE SYSTEMS
This function allows measuring in real time mains voltage and phase current (with
optional clamp transducer), the corresponding harmonics and evaluating power and power
factor in single-phase systems.
Fig. 38: Connection for measurements in a single-phase system
1. Press the MENU key, move the cursor to PQA in the
main menu by means of the arrow keys (  ,  ) and
confirm with ENTER . Subsequently, the instrument
shows a screen similar to the one on the side.
PQA 15/10 – 18:04
V L - N = 0 . 0 V
I = 0 . 0 A
P = 0 k W
Q = 0 k V a r
S = 0 k V A
P f = 1 . 0 0
C o s

= 1 . 0 0
Par 100A
MODE FS
2. Use the arrow keys

,

to select the parameter to be modified, and keys

,

to
change the parameter's value :
 MODE  This key allows setting the type of display of the parameters measured
by the instrument. Following options are available: Par (mains parameters Voltage,
Current, active, reactive, apparent Power, Power factor, Cos

), ArmV (Voltage
harmonics up to the 25th + THDV%), ArmI (Current harmonics up to the 25th +
THDI%)
 FS  This key allows selecting the full scale (FS) of the clamp transducers which
can be used with the instrument. Following values are available: 1A, 5A, 10A, 30A,
40A, 100A, 200A, 300A, 400A, 1000A, 2000A, 3000A
3. Insert the blue and black connectors of the separate cables into the relevant
instrument input terminals B4 and B1. In the free end of the cables, insert the
corresponding alligator clips or leads. Connect the alligator clips, leads to phase P and
to N according to
Fig. 38 to measure voltage in single-phase systems. Connect the
external clamp to the instrument's input In1 and to the phase conductor for single-
phase systems. The arrow on the clamp must point in the direction of the current flow,
normally from generator to load, as shown in Fig. 38.