34
Setting item
range
description
language
Chinese, English, the factory default setting is Chinese
Change
the
instrument
display language
password
0000~9999
，
The factory default is 0001, customers can modify
the settings themselves. If you forget your password, you need
to contact me.
Change
the
original
password and change it.
Backlight time
Constantly bright, 1~9999, the meter defaults to always bright
1~9999: After delaying the
set value, the backlight is
off, in seconds.
Contrast
1~99%
，
The meter default is 50%
Change
meter
display
contrast, default is 50%
Extreme
self-clearing time
Always keep, re-statistics every month, re-statistics every day,
re-statistics every hour, re-statistic every 30 minutes, re-statistic
every 15 minutes, the meter defaults to keep
Extreme statistical time
Unbalanced
calculation mode
In the above algorithm
Algorithm 0, 1 reference GB/T 15543-2008
Algorithm 2 reference Q/GDW 1519-2014
Algorithm 3 reference IEEE std 1159
1995-RECOMMENDED PRACTICE FOR MONITORING
ELECTRIC POWER QUALITY
Algorithm 4, our company
A
、
B
、
C
：
Effective value of each phase
A’
、
B’
、
C’
：
Phase vector
max
：
Three phase maximum
min
：
Three-phase minimum
avg
：
Three-phase average
rating
为：
Rating
The meter default is 0
5
different
imbalance
algorithms, customers can
set according to their needs.
When conditions permit, try
to use algorithm 0 or
algorithm 1. If the condition
is not allowed, it is
recommended
to
use
algorithm 3 or algorithm 4.
In addition, it should be
noted that the imbalance
calculation is a relative
percentage,
and
the
calculation
should
be
considered at the same time.
The magnitude of the load
rate is large for the
unbalanced
calculation
under the condition of small
load rate, and the impact and
harm are small.
