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8) Watt hour meter integrated value setting
The value at 24:00 of the day before the failure day (value for 00:00 of the failure day) is displayed
at the watt hour meter integrated value of each watt hour meter.
Failure cause: watt hour meter transmission line open (When watt hour meter counts normally.)
The watt hour meter integrated value does not have to be corrected.
Failure cause: watt hour meter failure or CT failure (When watt hour meter does not count normally)
Only the watt hour meter integrated value of the failed watt hour meter must be corrected. Refer to
the watt hour meter integrated value for the week before the failure and study the electric power
consumption for the remedial interval.
Examples 1 and 2 study the power consumption for the three days from the failure day (00:00) to
the day after recovery (00:00) and calculate the power integrated value for 00:00 of the failure day
(24:00 of the day before the failure day), with the integrated value for the day after recovery as the
standard.
The power integrated value is corrected to the calculated value for 00:00 of the failure day.
Ex. 1) Remedial interval power consumption study (Remedial interval = 3 days)
(00:00 value) Units: kWh
Ex. 2) Remedial interval power consumption study (Remedial interval = 3 days)
(00:00 value) Units: kWh
When setting of the remedial apportioning screen is complete, perform Section 9.5.1 “(3)
Calculate remedial apportioning”.
7 days
before
6 days
before
5 days
before
4 days
before
3 days
before
2 days
before
1 day
before
Failure
day
…
Day after
recovery
Integrated
value
200 300 410
50
0
620 780 800 900 … 950
Consumption 100 110 90 120 160 20 100 300
* The average day’s power consumption and remedial interval power consumption are assumed to be 100kWh and
300kWh, respectively.
The power integrated value is set at “950-300=650
” kWh.
Note:
• The watt hour meter integrated value for each date can be displayed by integrated value b
y
changing the remedial apportioning start day.
• The day before the failure day must be charge apportioned normally.
• The indoor unit operation amount can also be referenced in watt hour meter integrated value
calculation and study. The average value can also be studied from the monthly units watt hou
r
meter air-conditioning charge result. It is recommended that the calculation method suited to
the system conditions be used.
• When the calculated watt hour meter integrated value is a negative value, set the value calculated
integrated value + watt hour meter maximum integrated value + minimum integrated value.
7 days
before
6 days
before
5 days
before
4 days
before
3 days
before
2 days
before
1 day
before
Failure
day
…
Day after
recovery
Integrated
value
200 300 410 500 620 780 800 900 … 5
Consumption 100 110 90 120 160 20 100 300
* The average day’s power consumption and remedial interval power consumption are assumed to be 100kWh and
300kWh, respectively.
The power count value is set at “5-300+9999+1=9705” kWh.
(Watt hour meter maximum integrated value: 9999 Minimum integrated value: 1)