V
V
I
I
P
P
C
C
L
L
A
A
M
M
P
P
M
M
I
I
N
N
I
I
-
Special reference condition
-3-phase and sinusoidal network with 50 Hz or 60 Hz stable frequency
Characteristics
- Frequency range: 47 Hz to 53 Hz or 57 Hz to 63 Hz.
- Acceptable voltage range: 50 V to 600 V
- Acceptable phase imbalance rate: ±10°
- Acceptable amplitude imbalance rate: 20%
- Acceptable voltage harmonic distortion: 10%
Running of phase rotation direction detection sequence
Note 1:
In the following table, display of the symbol refers systematically to the beginning of sequence
Note 2:
The sequence of the following table is described using:
- L1 on terminal COM
- L2 then L3 on terminal + The same result is obtained if:
- L2 on terminal COM , L3 then L1 on terminal + or:
- L3 on terminal COM , L1 then L2 on terminal +
Note 3:
The measurement principle is based on a certain frequency stability and practically sinusoidal signals (THD < 10%).
This excludes in particular measurement on power generators whose spin stabilisation system is too weak to ensure
adequate frequency stability.
3.12 Secondary Functions
3.12.1 Display lock
A short pressing on the
HOLD
key freezes the display.
A second pressing unlocks the display.
3.12.2 Preselection of MIN/MAX mode
A short pressing on the
HOLD
key then on the
MIN/MA
X key preselects the MIN/MAX mode. A second pressing
on the HOLD key makes the MIN/MAX mode effective.
This function is used to select the MIN/MAX mode upon request to prevent, for example, the unwanted or mistaken
integration of MIN/MAX values.
Action
Display
Switch on the position 1 2 3
Press the yellow key
Cable connected black on
L1 and contact
displays red cable on L2
Comments
Red cable contact on L3
(less than 10 seconds
after leaving L2
rEF
ErrV
(2 s)
poi
Err Hz
(2 s)
poi
rEF OK
MEAS
ErrV
(2 s) then
Err Hz
(2 s) then
Err 1.2.3
3.2.1
Enter the function
The unit is ready to detect the
reference period
The unit determines the period
measurement, the following messages
may be displayed (after 10 s max):
-- determination of period for
measurement in progress
-- ontact on L3 a was performed too late
(more than 10 s after display rEF OK)
-- voltage incorrect
-- equency incorrect
-- dtermination of phase direction
impossible
-- direct direction of phase rotation
-- reverse direction of phase rotation
Return to beginning of sequence
(valid at all times in the sequence)
Press yellow key
8
after 10 seconds maximum result is one
of the 3 following opposite:
-- if voltage < 50 V
-- if niminal freq.50 Hz or 60 Hz
-- re
ference period correct
