Danfoss VLT HVAC Basic Drive FC 101, Руководство по эксплуатации, Страница: 74 / 84

RFI filter
type
Conduct emission. Maximum shielded cable length [m (ft)] Radiated emission
22–90 kW
(30–120 hp)
3x380–480 V
IP54 25 (82) – – – – – No – No –
H3 RFI filter (EN55011 A1/B, EN/IEC 61800-3 C2/C1)
15–45 kW
(20–60 hp)
3x200–240 V
IP20 – – 50 (164) – 20 (66) – Yes – No –
30–90 kW
(40–120 hp)
3x380–480 V
IP20 – – 50 (164) – 20 (66) – Yes – No –
0.75–18.5 kW
(1–25 hp)
3x380–480 V
IP54 – – 25 (82) – 10 (33) – Yes – – –
22–90 kW
(30–120 hp)
3x380–480 V
IP54 – – 25 (82) – 10 (33) – Yes – No –
6.3 Special Conditions
6.3.1 Derating for Ambient Temperature and Switching Frequency
Ensure that the ambient temperature measured over 24 hours is at least 5 °C (41 °F) lower than the maximum ambient temperature
that is specified for the drive. If the drive is operated at a high ambient temperature, decrease the constant output current. For derating
curve, see the VLT® HVAC Basic Drive FC 101 Design Guide.
6.3.2 Derating for Low Air Pressure and High Altitudes
The cooling capability of air is decreased at low air pressure. For altitudes above 2000 m (6562 ft), contact Danfoss regarding PELV.
Below 1000 m (3281 ft) altitude, derating is not necessary. For altitudes above 1000 m (3281 ft), decrease the ambient temperature or
the maximum output current. Decrease the output by 1% per 100 m (328 ft) altitude above 1000 m (3281 ft) or reduce the maximum
ambient temperature by 1 °C (33.8 °F) per 200 m (656 ft).
Specifications
Operating Guide | VLT® HVAC Basic Drive FC 101
AQ275641848264en-000101 / 132R0078
74 | Danfoss A/S © 2019.11