Derating of the cable length due to line voltage, ambient temperature, and PWM frequency

The following tables show the values for the derating of the cable length due to the line voltage Vline, the ambient temperature T, and PWM frequency fPWM:

Lnew

Cable length after derating

L4 kHz

Maximum motor cable length at fPWM = 4 kHz, see chapter Motor cable

T

Ambient temperature

MOVITRAC® advanced, 3-phase

Inverter

 

fPWM

Cable length L

Uline: 3 × 400 V

Uline: 3 × 500 V

Size 0S
≤ 2.5 A

 

4 kHz

Lnew/L4 kHz= 100% - (T - 40 °C) × 5.5%
operation up to a maximum of 50 °C

Lnew/L4 kHz= 50%
operation up to a maximum of 40 °C

8 kHz

Lnew/L4 kHz= 50% - (T - 40 °C) × 3.4%
operation up to a maximum of 50 °C

Not possible

16 kHz

Lnew/L4 kHz = 16%
operation up to a maximum of 40 °C

Not possible

Size 0S
≥ 3.2 A

 

4 kHz

Lnew/L4 kHz = 100% - (T - 40 °C) × 3.7%
operation up to a maximum of 55 °C

Lnew/L4 kHz = 40% - (T - 40 °C) × 1.5%
operation up to a maximum of 55 °C

8 kHz

Lnew/L4 kHz = 70% - (T - 40 °C) × 2.6%
operation up to a maximum of 55 °C

Lnew/L4 kHz = 21% - (T - 40 °C) × 0.8%
operation up to a maximum of 55 °C

16 kHz

Lnew/L4 kHz = 40% - (T - 40 °C) × 2.8%
operation up to a maximum of 50 °C

Not possible

Size 0L
≤ 12.5 A

 

4 kHz

Lnew/L4 kHz = 100%
operation up to a maximum of 55 °C

8 kHz

Lnew/L4 kHz = 75%
operation up to a maximum of 55 °C

16 kHz

Lnew/L4 kHz = 50% - (T - 40 °C) × 1.8%
operation up to a maximum of 55 °C

Lnew/L4 kHz = 39% - (T - 40 °C) × 1.4%
operation up to a maximum of 50 °C

Size 0L
16 A

 

4 kHz

Lnew/L4 kHz = 100%
operation up to a maximum of 55 °C

8 kHz

Lnew/L4 kHz = 75% - (T - 40 °C) × 1%
operation up to a maximum of 55 °C

Lnew/L4 kHz = 75% - (T - 40 °C) × 1%
operation up to a maximum of 50 °C

16 kHz

Lnew/L4 kHz = 50% - (T - 40 °C) × 2.5%
operation up to a maximum of 55 °C

Lnew/L4 kHz = 25% - (T - 40 °C) × 1.3%
operation up to a maximum of 50 °C

Inverter

 

fPWM

Cable length L

Uline: 3 × 230 V

Size 0S
≤ 2.5 A

 

4 kHz

Lnew/L4 kHz = 100% - (T - 40 °C) × 5.5%
operation up to a maximum of 50 °C

8 kHz

Lnew/L4 kHz = 50% - (T - 40 °C) × 3.4%
operation up to a maximum of 50 °C

16 kHz

Lnew/L4 kHz = 16%
operation up to a maximum of 40 °C

Size 0S
≥ 3.4 A

 

4 kHz

Lnew/L4 kHz = 100% - (T - 40 °C) × 3.7%
operation up to a maximum of 55 °C

8 kHz

Lnew/L4 kHz = 70% - (T - 40 °C) × 2.6%
operation up to a maximum of 55 °C

16 kHz

Lnew/L4 kHz = 40% - (T - 40 °C) × 2.8%
operation up to a maximum of 50 °C

Size 0L
≤ 9.3 A

 

4 kHz

Lnew/L4 kHz = 100%
operation up to a maximum of 55 °C

8 kHz

Lnew/L4 kHz =75%
operation up to a maximum of 55 °C

16 kHz

Lnew/L4 kHz = 50% - (T - 40 °C) × 1.8%
operation up to a maximum of 55 °C

Size 0L
14 A

 

4 kHz

Lnew/L4 kHz = 100%
operation up to a maximum of 55 °C

8 kHz

Lnew/L4 kHz = 75% - (T - 40 °C) × 1%
operation up to a maximum of 55 °C

16 kHz

Lnew/L4 kHz = 50% - (T - 40 °C) × 2.5%
operation up to a maximum of 50 °C

MOVITRAC® advanced, 1-phase

Inverter

 

fPWM

Cable length L

Uline: 1 × 230 V

Size 0S
≤ 3.4 A

 

4 kHz

Lnew/L4 kHz = 100% - (T - 40 °C) × 2.2%
operation up to a maximum of 55 °C

8 kHz

Lnew/L4 kHz = 46% - (T - 40 °C) × 1.2%
operation up to a maximum of 50 °C

16 kHz

Lnew/L4 kHz = 29% - (T - 40 °C) × 1.8%
operation up to a maximum of 50 °C

Size 0S
4.2 A

 

4 kHz

Lnew/L4 kHz = 100% - (T - 40 °C) × 2%
operation up to a maximum of 55 °C

8 kHz

Lnew/L4 kHz = 100% - (T - 40 °C) × 1.4%
operation up to a maximum of 55 °C

16 kHz

Lnew/L4 kHz = 70% - (T - 40 °C) × 1%
operation up to a maximum of 55 °C

Size 0L
≤ 9.3 A

 

4 kHz

Lnew/L4 kHz = 100%
operation up to a maximum of 55 °C

8 kHz

Lnew/L4 kHz = 100%
operation up to a maximum of 55 °C

16 kHz

Lnew/L4 kHz = 70% - (T - 40 °C) × 2.1%
operation up to a maximum of 50 °C

Size 0L
11 A

 

4 kHz

Lnew/L4 kHz = 100%
operation up to a maximum of 55 °C

8 kHz

Lnew/L4 kHz = 100% - (T - 40 °C) × 1.7%
operation up to a maximum of 55 °C

16 kHz

Lnew/L4 kHz = 50%
operation up to a maximum of 55 °C