Mitsubishi Electric G-50A Technical Manual page 46

(4) What is the seasonal charge?
The electrical power charge can be divided into the summer seasonal charge and normal charge.
Because of this, the following management can be adapted for example;
"As a ratio of using air conditioner rises in the summer (July ~ September) and electric power
consumption of a whole building increases accordingly, higher power rate may be applied in this period."
The period of the seasonal charging may be applied by specifying the date of start and end respectively.
Seasonal charge setting
Selects setting or no setting.
Default value represents "No setting."
Figure 8-5 TG-2000A seasonal charge setting screen (ex, electric power manual input, pulse count)
(5) Setting of special day (Setting of annual charge)
Besides the items (3) and (4) above, a special day of up to 50 days can be set in a range of 24 months
in future (including this month).
For the special days, 5 patterns may be set and the patterns may be assigned to 50 days maximum.
The unit price of the charging changes by a fact whether the assigned day belongs to the seasonal
charging period or normal charging period.
Pattern setting
5 patterns can be set.
The pattern name can be
changed (up to 10 characters).
Pattern set/cancel
Clicking the date sets or cancels
the pattern being selected.
This function can not be used in the case of electric power count by PC direct connect (RS-485WHM).
CAUTION
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Figure 8-6 TG-2000A annual charge setting screen
[RE: Apportioning of air conditioning power consumption]
Since the watt-hour meter value of power consumption is apportioned by judging the operation status of the indoor unit from detailed
communication between the indoor and outdoor unit, this value can not be applied to the business certificate legally defined.
The same limitation is applied to the case of direct reading of measuring instrument unit.
In order to employ this system, therefore, it is recommended to conclude an agreement or contract between the building owner and
tenants stipulating that [The air conditioning charge should be collected through apportioned calculation based on the operation
status (including the temporary processing measure at trouble)].
(1) This system does not measure the power consumption of each indoor unit directly.
(2) As the system estimates the power consumption of air conditioning, the valued obtained herewith may not be applied to
the certificate of business transaction.
(3) Even if the operation time of air conditioners is same, the power consumption differs depending on the operating status.
(4) As air conditioners are powered even when they are stopping, the power consumption will be charged.
(5) One watt-hour meter should be connected to one air conditioner. If connected to plural air conditioners, an error will be
caused due to the apportioning of total power consumption.
(6) At the failure of PC, G-50A or PLC, the average apportioned value in the past may be adapted for temporary transaction as a solution.
(7) As the power consumption and gas consumption is taken in the form of a pulse, the performance and accuracy are
depending on that of the measuring instruments employed. Under this circumstance, we are not liable for the
performance and accuracy presented.
(8) As the resultant air conditioning charge is rounded to the nearest whole number at a figure not shown here, please
note that an error generates between the air conditioning charge of watt-hour meters and that of the block total.
Seasonal charging period setting
Sets the seasonal charging period.
Pattern set/change button
Sets or changes the charging
patterns.
Displays the number of set days
Displays the number of the day set
with annual rate.
Can be set 50 days maximum for
24 months in future including the
present month.