The meter has been given a 20 year certification life by OFGEM, the regulator for the UK. This is based on a reliability of better than 97% over 20 years calculated using an OFGEM model.
The Landis & Gyr 5219 is a Three phase, Direct connected, 20-100A kWh meter with both active (class 1.0) and Reactive energy (KVArh) (class 2.0) management features.
5219B's are OFGEM approved for billing, housed in a compact casing and includes an optical port for data acquisition and programming (E230 replacement model is MID approved).
Landis & Gyr 5219b Three Phase Electric Meter