Accounting; Standing Charge Deduction; Emergency Credit; Friendly Credit - Secure Liberty 100 Technical Reference Manual

When the time drift is greater than the maximum time synchronisation threshold the meter will reject the time
synchronisation request and will allow time adjustment using time setting to an absolute value from the HES.

5.5 Accounting

5.5.1 Standing Charge Deduction

Liberty 100 operating in Prepayment mode can be configured to deduct a specified amount of standing charge
from its current account and Emergency Credit account (if applicable); this deduction takes place daily at
midnight (00:00 GMT) irrespective of the amount of energy consumed or the meter's account status. It is
therefore possible for arrears to accrue on a current account even after credit expires and the meter's supply
disconnects.
The per day standing charge deduction amount can be viewed by pressing key '6' on the meter's keypad. In the
event of a power failure the meter will remember the number of days for which the charge has not been
collected and will deduct the amount when the power is restored.
The following are configurable in Liberty 100 with respect to standing charges:
● Enable or disable standing charge deduction for Prepayment and Credit mode.
● Enable or disable standing charge deduction when the Emergency Credit is in use.
● Enable or disable standing charge deduction during a self disconnected period. The meter can be
configured not to deduct standing charges during a self disconnected period if the meter's account
balance is zero or negative.

5.5.2 Emergency Credit

Liberty 100 operating in Prepayment mode supports Emergency Credit functionality which if enabled will prevent
immediate supply disconnection during defined times of the day and days of the week when the meter account
becomes zero or negative. Emergency Credit is made available to users when their meter account passes the
Low Credit threshold and is enabled by pressing key 'A' on the meter keypad or a displayed button on the IHD.
Users can also enable Emergency Credit after supply disconnection. A visual indication on the meter's display
as well as on the IHD will indicate the availability of Emergency Credit.
The default Emergency Credit allowance can be changed via a tariff change UTRN. The allowance, when used
up, must be repaid in full before Emergency Credit is made available for use again.
Standing charges can be deducted from Emergency Credit if configured; otherwise, the meter will maintain in a
separate register, the standing charge amount that would have otherwise been deducted during this period. If
configured, then the accrued standing charge will be recovered in full from the top-up amount before Emergency
Credit is made available for use again.

5.5.3 Friendly Credit

Friendly Credit is a configurable non-disconnection regime that overrides account-related supply disconnection
at certain times of the day, days of the week or on defined dates in the year such as public holidays. Liberty 100
operating in Prepayment mode supports this feature.
In a Friendly Credit period if the meter's account balance becomes zero and Emergency Credit is not enabled or
is used up then the supply will not disconnect because a grace period of x minutes is configured at the end of
Friendly Credit period which interrupts supply disconnection. The default value of grace period is set to 60
minutes. If Emergency Credit is not enabled or the meter's account is not credited with the appropriate amount
Page 30 of 116 Liberty 100 Smart Electricity Meter Technical Reference Manual BGX501-767-R02