6.5 General Technical Data
6.5.1 Protection and Features
•
Electronic motor thermal protection against overload.
•
Temperature monitoring of the heat sink ensures that the drive trips if there is overtemperature.
•
The drive is protected against short circuits between compressor terminals U, V, W.
•
When a compressor phase is missing, the drive trips and issues an alarm.
•
When a mains phase is missing, the drive trips or issues a warning (depending on the load).
•
Monitoring of the DC-link voltage ensures that the drive trips when the DC-link voltage is too low or too high.
•
The drive is protected against ground faults on compressor terminals U, V, W.
6.5.2 Mains Supply (L1, L2, L3)
Supply voltage
200–240 V ±10%
Supply voltage
380–480 V ±10%
Supply frequency
50/60 Hz
Maximum imbalance temporary between mains phases
3.0% of rated supply voltage
True power factor (λ)
≥0.9 nominal at rated load
Displacement power factor (cosφ) near unity
(>0.98)
Switching on the input supply L1, L2, L3 (power-ups)
Maximum 2 times/minute
Environment according to EN 60664-1
Overvoltage category III/pollution degree 2
The unit is suitable for use on a circuit capable of delivering not more than 100000 A
rms
symmetrical Amperes, 240/480 V maximum.
6.5.3 Compressor Output (U, V, W)
Output voltage
0–100% of supply voltage
Output frequency
0–200 Hz (VVC
+
), 0–400 Hz (u/f)
Switching on output
Unlimited
Ramp times
0.05–3600 s
6.5.4 Cable Lengths and Cross-sections
Maximum compressor cable length, shielded/armored (EMC-correct installation)
See
.
Maximum compressor cable length, unshielded/unarmoured
50 m (164 ft)
Maximum cross-section to compressor, mains
6.2 Mains Supply 3x380–480 V AC
information
Cross-section DC terminals for filter feedback on enclosure size H3
4 mm
2
/11 AWG
Cross-section DC terminals for filter feedback on enclosure sizes H4–H6
16 mm
2
/6 AWG
Maximum cross-section to control terminals, rigid wire
2.5 mm
2
/14 AWG
Maximum cross-section to control terminals, flexible wire
2.5 mm
2
/14 AWG
Specifications
Operating Guide | VLT® Compressor Drive CDS 803
AQ321748767627en-000101 / 130R0570
46 | Danfoss A/S © 2019.12
