APL SEM 3P V2, Техническое руководство

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Active MD calculation method is slide calculation method.
MD calculation cycle is 15 min.
MD slide window time is 1 min.
4.5. Load Control Function
The meter can be programmed to set load control threshold.
When the meter detects current power of one phase is higher than Sanctioned load, overload
alert will be triggered. Alert LED will blink in red. If alert duration reaches specified 30 secs, the
meter will cut off user load, alert LED will keep lighting in red. The meter relay will auto close
after 120 sec or input
“0” “0” and press Enter key on UIU to
close relay. If overload trip times >3 within 30 min, the meter relay will auto close after 30
min or inp
ut “0” “0” and press Enter key to close relay.
When load threshold is 0, this function will be disabled.
4.6. Pre-alarming Consumption Function
The meter can be programmed to set pre-alarming threshold.
If the energy balance is lower than pre-alert threshold, the alert indicator will blink in red.
When energy balance is lower than pre-alarming threshold (which can be queried via
UIU), pre-alarming function will be triggered. Low energy alert LED indicator shall blink.
When energy balance is deducted to 0, the relay will trip and alert LED indicator shall keep
lighting in red.
When pre-alarming threshold value is 0, the function will be disabled.
4.7. Reverse Consumption Function
When the meter detects reverse consumption in Phase A, B and C, alert LED indicator
shall blink in red and reverse tag
“ ” corresponding with Phase A, B and C shall keep
lighting.
Reverse consumption measured as forward.
4.8. LCD Data Display
Item Introduction
Power purchase token is correct and accepted
and
“accept” is displayed.
Power purchase token is wrong and rejected and
“reject” is
displayed.
Whe
n “old” is displayed, it means token is expired.
When
“used” is displayed, it means the token is a
used one.