Secure Liberty 100 Technical Reference Manual page 39

a) TOU:
Up to 48 TOU registers can be assigned allowing a different TOU register to be used every half hour.
Each TOU register can have its own rate.
b) Block (or Slab):
Up to 8 block registers can be assigned. Switching between Blocks happens when defined consumption
thresholds are exceeded.
c) Combined TOU and Block (Hybrid):
Up to 8 TOU registers can be assigned with each having up to 8 block registers. A different TOU
register can be used every half hour.
Time of use (TOU) tariff registers
Users are charged different tariff prices at different times of the day. An example is shown below:
Liberty 100 meters supports configuration of TOU tariff structure for 4 seasons, 4 weeks, 17 days, 12 switching
points per day and 50 special dates.
Block tariff registers
Users are charged different tariff prices for different predefined kWh unit blocks of electricity. An example is
shown below for four block rates throughout a year:
Hybrid tariff registers
Users are charged different tariff prices at different times of the day and for different predefined kWh unit blocks
of electricity. An example is shown below for a hybrid tariff having two TOU rates and two Block rates
throughout a year:
TOU1 (Night)
TOU2 (Day)
Note: The above time patterns and thresholds are used as example for this manual. R1 – R4 are different rate
prices in pence.
BGX501-767-R02
TOU Time pattern
TOU1 00:00 – 07:00
TOU2 14:00 – 20:00
TOU3 20:00 – 00:00
kWh Blocks Block threshold
Block 1 0 – 10 kWh
Block 2 11 – 25 kWh
Block 3 26 – 45 kWh
Block 4 46 kWh onwards
kWh Blocks
Block 1
Block 1 (below the configured threshold)
Block 2 (above the configured threshold)
Liberty 100 Smart Electricity Meter Technical Reference Manual
Rate charged
R1
R2
R3
Rate charged
R1
R2
R3
R4
Rate charged
R1
R2
R3
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