Grundfos RSI Serie Instrucciones De Instalación Y Funcionamiento página 15

3.2.3 Drive efficiency (CDM)
The IE classification of the complete drive module (CDM) is based on the drive losses. The loss determination is
based on factory settings such as the default switching frequency. The efficiency of RSI is determined as
efficiency class IE2 according to EN 50598-2 and IEC 61800-9.
Different operating points of RSI depending on the relative torque-producing current and the relative motor
stator frequency
Pos.
A
B
Efficiencies and standby losses of RSI at different operating points
Drive efficiencies for low voltage range (3 × 208-240 V), IP66 variant
Variant, Apparent Nominal
power power current
[kW (hp)] [kVA] [A]
1.5 (2) 3.2 8
2.2 (3) 4.4 11
3.0 (4) 5.0 12.5
4.0 (5) 7.2 18
5.5 (7.5) 9.6 24.2
7.5 (10) 12.3 31
11 (15) 19.1 48
15 (20) 24.7 62
B [ % ]
10 10 10
Standby
losses 25 50 100
[W]
1 2 3
14 1.89 2.10 2.61 1.94 2.23 2.93 2.00 2.43 3.46 2.01 2.46 3.58
14 1.62 1.86 2.42 1.69 2.01 2.81 1.74 2.24 3.49 1.76 2.29 3.66
14 1.55 1.79 2.39 1.61 1.95 2.81 1.65 2.21 3.56 1.67 2.27 3.74
14 1.36 1.57 2.06 1.42 1.69 2.34 1.47 1.85 2.76 1.48 1.90 2.87
14 1.04 1.29 2.00 1.10 1.42 2.35 1.14 1.61 2.93 1.15 1.65 3.07
14 0.97 1.23 1.99 1.03 1.37 2.40 1.07 1.59 3.10 1.09 1.64 3.27
18 1.07 1.32 2.04 1.13 1.46 2.42 1.18 1.65 3.04 1.19 1.70 3.19
18 0.99 1.26 2.03 1.06 1.41 2.47 1.11 1.64 3.23 1.12 1.69 3.42
Description
Relative torque-producing current
Relative motor stator frequency
Frequency[%]
50 50 50 90
Current [%]
25 50 100 25
Operating point
4 5 6 7
Relative losses [%]
90 90 100 100 100
50 100 25 50 100
8 9 10 11 12
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