Installation; Mechanical Installation; Side-By-Side Installation; Operating Environment - Danfoss VLT Compressor Drive CDS 803 Guia De Funcionamiento

VLT® Compressor Drive CDS 803
Operating Guide

3 Installation

3.1 Mechanical Installation

3.1.1 Side-by-side Installation

The drive can be mounted side by side but requires the clearance specified in
Table 3: Clearance Required for Cooling
Size IP protection rating
H3 IP20
H4 IP20
H5 IP20
H6 IP20
With IP21/NEMA Type1 option kit mounted, a distance of 50 mm (2 in) between the units is required.

3.1.2 Operating Environment

3.1.2.1 Derating for Ambient Temperature and Switching Frequency

Ensure that the ambient temperature measured over 24 hours is at least 5 °C (9 °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 specifications, see the VLT® Compressor Drive CDS 803 Design Guide listed in

3.1.2.2 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 maxi-
mum ambient cooling air temperature by 1 °C (1.8 °F) per 200 m (656 ft).

3.2 Electrical Installation

3.2.1 Electrical Installation in General

All cabling must comply with national and local regulations on cable cross-sections and ambient temperature. Copper conductors
are required. 75 °C (167 °F) is recommended.

3.2.1.1 Fastener Torque Ratings

Table 4: Tightening Torques for Enclosure Sizes H3–H6, 3x200–240 V & 3x380–480 V
Power [kW (hp)]
Enclo- IP protec- 3x200–240 V
sure size tion rat-
ing
H3 IP20 –
14 | Danfoss A/S © 2021.06
Power [kW (hp)]
3x200–240 V 3x380–480 V
– 6.0–7.5 (8.0–10)
6.0–7.5 (8.0–10) 10 (15)
10 (15) 18.5–22 (25–30)
– 30(40)
N O T I C E
Torque [Nm (in-lb)]
3x380–480 V Mains
6.0–7.5 (8.0–10) 0.8 (7)
Table 3 above and below for cooling.
Clearance above/below [mm (in)]
100 (4)
100 (4)
100 (4)
200 (7.9)
1.1.2 Additional Resources.
Motor DC connec- Control ter-
tion minals
0.8 (7) 0.8 (7) 0.5 (4)
AQ32174876762701-000301 / 130R0627
Installation
Ground Relay
0.8 (7) 0.5 (4)