The Ecodesign for Energy-Related Products and Energy Information Regulations 2021

Efficiency requirements for variable speed drives

7.—(1) From 1 July 2021, VSDs must meet the following requirements.

(2) The power losses of VSDs rated for operating with motors with a rated output power equal to or above 0.12 kW and equal to or below 1,000 kW must not exceed the maximum power losses corresponding to the IE2 efficiency level.

(3) Energy efficiency for VSDs, expressed in International Energy efficiency classes (IE), is determined based on the power losses as follows—

(a) the maximum power losses of the IE2 class are 25 per cent lower than the reference value referred to in Table 29;

(b) where the apparent output power of a VSD is between two values in Table 29, the higher power loss value and the lower value of the test load displacement factor must be used for the IE class determination; and

(c) losses are determined in accordance with Schedule 17.

Table 29

Reference VSD losses and test load displacement factor for the IE class determination of VSDs

Apparent output power of VSD (kVA)	Rated power of motor (kW) (indicative)	Reference power losses (kW), at 90 per cent rated motor stator frequency and 100 per cent rated torque-producing current	Test load displacement factor cos phi (+/- 0.08)
0.278	0.12	0.100	0.73
0.381	0.18	0.104	0.73
0.500	0.25	0.109	0.73
0.697	0.37	0.117	0.73
0.977	0.55	0.129	0.73
1.29	0.75	0.142	0.79
1.71	1.1	0.163	0.79
2,29	1.5	0.188	0.79
3.3	2.2	0.237	0.79
4.44	3	0.299	0.79
5.85	4	0.374	0.79
7.94	5.5	0.477	0.85
9.95	7.5	0.581	0.85
14.4	11	0.781	0.85
19.5	15	1.01	0.85
23.9	18.5	1.21	0.85
28.3	22	1.41	0.85
38.2	30	1.86	0.85
47	37	2.25	0.85
56.9	45	2.70	0.86
68.4	55	3.24	0.86
92.8	75	4.35	0.86
111	90	5.17	0.86
135	110	5.55	0.86
162	132	6.65	0.86
196	160	8.02	0.86
245	200	10.0	0.87
302	250	12.4	0.87
381	315	15.6	0.87
429	355	17.5	0.87
483	400	19.8	0.87
604	500	24.7	0.87
677	560	27.6	0.87
761	630	31.1	0.87
858	710	35.0	0.87
967	800	39.4	0.87
1,088	900	44.3	0.87
1,209	1,000	49.3	0.87