Mitsubishi Electric ME96SSRA-MB, Руководство пользователя

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5. Operation
67
5.1. Basic Operation

Maximum value and minimum value display
For the maximum / minimum value display screen, the maximum value, current value,
and minimum value for each measurement item are displayed on one screen.
However, for harmonics only the following maximum values are displayed.
Harmonic current: Total, 1st to 19th (only odd number) effective values for where the phase was largest for each phase.
Harmonic voltage: Total distortion factor, 1st effective value, 3rd to 19th (only odd number) content factors for where the
phase was largest for each phase
■
Example Display

Display of maximum value and minimum value
When is pressed, the display is changed into the maximum value and minimum value display.
And when is pressed, the display changes back to the present value display.
On maximum/minimum value display, the following operation is also possible as current value display .
Button operation Function
Press
Measurement items switch according
to the following order.
However, measurement items that are not included
in the phase wire method display pattern setting
and additional screens are not displayed.
Press
3-phase 4-wire: A and DA switch as
V switches as
W, var, VA, PF switch as
A
N
, DA
N
and Hz do not have phase switching.
3-phase 3-wire, 1-phase 3-wire: Phase for A, DA and V switch.
1-phase 2-wire: No phase switch.
Press or The harmonic degree switch. (Only for harmonics display)
Press for 2 seconds
Switches to measurement item cyclic display.
Press for 2 seconds Switches to phase cyclic display.

Clear the maximum/minimum value
On the maximum/minimum value display screen, press the for 2 seconds to clear the maximum/minimum
value for the displayed measurement item to the present value.
On the maximum/minimum value display screen, press the
and together for 2 seconds to clear all
maximum/minimum values to the present value.
When the password protection setting is enabled, maximum/minimum values are cleared after you enter the password.
Also, you can clear all maximum/minimum values by communication function. (In this case, the password is not
necessary.)
A
N
: N-phase current
DA: Current demand
DA
N
: N-phase current demand
HI: Harmonic current
HI
N
: N-phase harmonic current
HV: Harmonic voltage
MAX/MIN
RESET
＋
RESET
MAX/MIN
Upper: Maximum value
Middle: Current value
Lower: Minimum value
＜
Example of current
＞ ＜
Example of current harmonics
＞
The bar graph turns on only
between the maximum value
and minimum value.
Harmonic degree
Harmonics won’t display
as bar graph.
Maximum value
Example of switching between present value display and maximum/minimum value display
Present value display
Maximum value and minimum value display
Average
→1 Phase→2 Phase→3 Phase
A → A
N
→ DA → DA
N
→ V → W → var
HV ← HI
N
← HI ← Hz ← PF ← VA
V
AVG
(L-N)
→V
1N
→V
2N
→V
3N
→V
AVG
(L-L)
→V
12
→V
23
→V
31
Total
→1 Phase→2 Phase→3 Phase
DISPLAY
＋ －
PHASE
DISPLAY
PHASE