Danfoss VLT Compressor Drive CDS 803 - General Specifications

8.2 General Specications
Protection and features
•
Electronic thermal compressor protection against overload.
•
Temperature monitoring of the heat sink ensures that the frequency converter trips if there is overtemperature.
•
The frequency converter is protected against short circuits between compressor terminals U, V, W.
•
When a compressor phase is missing, the frequency converter trips and issues an alarm.
•
When a mains phase is missing, the frequency converter trips or issues a warning (depending on the load).
•
Monitoring of the DC-link voltage ensures that the frequency converter trips, when the DC-link voltage is too low
or too high.
•
The frequency converter is protected against ground faults on compressor terminals U, V, W.
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 RMS symmetrical Amperes, 240/480 V
maximum.
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
Cable lengths and cross-sections
Maximum compressor cable length, screened/armoured (EMC-correct installation) See chapter 2.7.3 EMC Test Results
Maximum compressor cable length, unscreened/unarmoured 50 m (164 ft)
Maximum cross-section to compressor, mains
1)
Cross-section DC terminals for lter feedback on enclosure sizes H1–H3, I2, I3, I4 4 mm
2
/11 AWG
Cross-section DC terminals for lter feedback on enclosure sizes H4–H5 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, exible cable 2.5 mm
2
/14 AWG)
Minimum cross-section to control terminals 0.05 mm
2
/30 AWG
1) See chapter 8.1.2 Mains Supply 3x380–480 V AC for more information.
General Specications Design Guide
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