ND MultiCube Single Phase, Installation And Operation Manual

Page: 7 / 32

Meter Operation
Single Phase MultiCube Page 7
On power up (or after a brown-out) the sub-period array values are reset to zero.
During the first full MD period the Rolling Demand value will accumulate as the
zeroes are replaced with valid sub-period averages.
2.1.1.2 Peak Demand (kW and I Pk Demand)
Peak MD readings are the maximum recorded values of corresponding Rolling
Demand values.
These may be used to determine the maximum load requirement of a system. They
are often used to determine spare capacity in a supply system, supply plant
requirement etc.
On power failure or brown-out Peak Demand values are automatically saved in non-
volatile memory within the MultiCube. The memory requires no battery and will hold
the value for up to 10 years in the absence of mains power.