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9.5.5 Remedy when watt hour meter fails (monitoring impossible)
The following describes the remedy when a watt hour meter fails and the charging data is abnormal
and is not apportioned.
1) Recovery from watt hour meter failure
Locate and remove the cause of the watt hour meter failure. The cause of the failure may be an
open transmission line, CT failure, or failure of the watt hour meter itself.
2) Wait until the day after the settlement-of-accounts day.
After recovery, continue normal operation until the day after the settle-of-accounts day.
3) Start remedial apportioning.
Start remedial apportioning by clicking the “Remedial apportioning” icon in the initial window. This
is described by the time series example below.
4) Settlement-of-accounts term setting
Set the settlement-of-accounts term (start day and end
day) at the remedial apportioning setting screen. The
initial value is the settlement-of-accounts term of the
previous month.
5) Total air-conditioning charge setting
Set the total air-conditioning charge for the settlement-
of-accounts term.
6) Include/Not include standard charge setting
When the settlement-of-accounts term is one month, [Include] or [Not include] standard charge can
be selected. Set whether or not the standard charge is to be included.
7) Remedial interval setting
Set the remedial apportioning interval. The remedial start day is the failure generation day and the
remedial end day is the recovery day.
Note:
• Operate normally up to the day after the settlement-of-accounts day because remedial
apportioning is performed for one month.
Note:
• Perform remedial proportioning from the day after the settle-of-accounts day. However,
except when it is different from the normal settlement-of-accounts term. Remedial
apportioning can begin two days after the recovery day. (Only when the day after the
recovery day was normally charged.)
Note:
• When the settlement-of-accounts term is one
month and includes a standard charge, set the
total air-conditioning charge including this
standard charge.
• When there is one power charge, the total
air-conditioning charge does not have to be set.
This item appears in
g
ra
y
.
Note:
• “Recovery day” is the day watt hour meter monitoring was recovered and is the day tha
t
normal operation was started.
• When the day before the remedial start day was not charge apportioned normally, change the
remedial start day to the day after the day normally charged before the failure day.
Failure Recovery Now
Ì Õ z
Portion for month before last
(
normal
)
Portion for last month
(
remedial
)
Remedial apportioning
Remedial apportioning setting screen