Landis+Gyr E470 User Manual page 37

Tariff Features
E470 Tokenless Smart Prepayment Meter
Issue: 1.8
From the start of the billing period, the meter will record kWh usage for
each of the potential prices within the tariff table into a working log. 16
values will be stored. This is diagrammatically shown below:
Rate 1
kWh A
Rate 2
kWh E
Rate 3
kWh I
Rate 4
kWh M
Block 1 Block 2 Block 3 Block 4
The meter records usage for every Wh registered.
At midnight each day the meter performs a reconciliation to ensure that
charges made using the Daily Block Tariff Thresholds are accurate to the
current position within the billing period. The meter will calculate the
number of kWh's for each block from the total of kWh's consumed at each
rate. A comparison of actual charges to calculated charges will be made.
Where a discrepancy has occurred, the calculated values will be used and
copied into the working log. A correction to the Present balance will be
made either as a positive or negative credit adjust.
Example 1
The following example shows a usage pattern over the first 5 days of the
billing period.
The example is based on a costs for kWh C = 0.20 and D 0.10. In the left
hand column the working log is shown together with the cost calculated
from usage during the day. The right hand column shows the 00:00
reconciliation. Where a discrepancy occurs between the amounts charged
and the calculated costs, an adjustment process would be made at this
time to the Present Balance register and the new values copied into the
working log.
kWh B kWh C
kWh F kWh G
kWh J kWh K
kWh N kWh O
Block (tier) tariff prices
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kWh D
kWh H
kWh L
kWh P
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