Paragraph 7 Multi-rate meters

Induction meters

(1)

(a)

All multi-rate induction meters shall be tested on one rate in accordance with paragraphs 5 and 6 and on each and every other rate at a low load using Method A, Method B or Method C tests and at a high load using Method A test.

(b)

The difference in errors measued on one rate shall not differ from the errors measured on any other rate, for the same load conditions, by more than 1%.

Static meters

(2)

(a)

All multi-rate static meters shall be tested on one rate in accordance with paragraphs 5 and 6.

(b)

For repaired multi-rate static meters where–

(i)

the total units is the sum of all the rates, a further test shall be carried out on each and every other rate at a high load using Method A;

(ii)

the total units are recorded on one register, only this register is required to be tested in accordance with paragraphs 5 and 6.