MVF23DD140NNSS - Delta Electronics, MVF23, 1250KW, 6.6kV, 140A
- System voltage: 3.3–6.6 kV ±10%
- Motor shaft power range: 135–2115 kW
- UPS for control supply back-up (30min standard)
- System design: Diode rectifier/IGBT inverter
- Requires no rear or side entry to perform repairs or maintenance
- Motor cable entry is possible from the top or bottom
- Control power: Single-phase 220 VAC; 5 kVA
- System efficiency: >98.5% (at rated; excluding transformer)
- Power factor: >0.96 (at rated)
- Overload capacity: 110% 1 min/10 min
- Cooling method: Forced air cooling
- Human-machine interface: 7 inches, multi-language touch screen
- Communication method: Modbus RTU
- IP rating: IP31
- Fitted motor type: induction motor: squirrel cage motor and wound motor, synchronous motor: brushed excited motor
Our Delta MVF23DD140NNSS series is a highly integrated and high-performing variable-frequency device for general-purpose motor control applications. Medium voltage VFD drives in general can save an average of 40% of the electricity a motor uses as well as reduce related CO2 emissions. It provides excellent variable-speed control for relevant system fans, pumps, and compressors. The MVF23DD140NNSS was designed to save energy, increase efficiency and reduce operating costs in a wide range of applications in the Mining Minerals, Metals, Power, Renewable Energy, Water-Wastewater, Petrochemical, Oil and Gas industries. Both the MVF23 and MVF20 series require no rear or side entry to perform repairs or maintenance which means the solution can be installed against walls or placed back-to-back to optimise space. PLC Technologies is a leading provider of Medium Voltage VFD drives from 160KW to 5600KW.
| MVF20 / MVF23 Series | |
| Input Voltage | 3.3kV, 6.6kV, 11kV (other voltages available on request) |
| Input voltage tolerance | -10% ∼ -10% continuous (±5% from transformer tap) |
| -30% ∼ -10% continuous operation at reduced power | |
| Rated line frequency | 50/60 Hz ±2% |
| Frequency variation | Up to ±2% |
| Output frequency range | 0.5 ∼ 75Hz |
| Control voltage | Single phase 220VAC (default) |
| Option with single phase 600, 480, 400, 347, 277, 240, 208 or 120 Vac | |
| Fan power supply | Fan power is supplied from the auxiliary winding of the phase-shifting transformer |
| Input current THD | THD < 5% at full load and rated speed (IEEE519-1992) |
| Input power factor | > 0.96 at full load and rated speed |
| Efficiency | 98.5% at rated speed and rated input voltage, excluding transformer |
| ≥ 96.5% at rated speed and load | |
| Output voltage | 0 to 3.3kV, 0 to 6.6kV, 0 to 11kV |
| Rectification configuration | 18 Pulse (3.3kV) / 36 Pulse (6.6kV) / 54 Pulse (11kV) |
| Output current | 36A, 70A, 100A, 140A, 215A, 250A, 350A up to 720A max |
| Output power range | MVF20: 530kW – 11000kW |
| MVF23: 160kW – 2000kW | |
| Auto restart (powerloss) | Yes |
| Output voltage THD | Multi-level output voltage waveform (near sinusoidal waveform) |
| Low output voltage THD | |
| Motor type | Induction motor (squirrel cage, slip-ring motor) |
| Synchronous motor (with brush and exciter system) | |
| Motor cable length | < 500m (no filter) > 500 < 2000m (du/dt filter) |
| Overload output current | 110% overload for 1 min every 10 min (ND) |
| 150% overload for 1 min every 10 min (HD) | |
| Transformer type | Full Cu, Dry type phase-shifting transformer |
| Transformer insulation | Class H |
| IP Rating | IP42 |
| System cooling | Forced air cooling |
| System accessibility | Front access – No rear or side entry required for any repair or maintenance work |
| Storage condition | Humidity 5% to 95% without condensation (-40°C to +70°C ambient) |
| Operational ambient temperature | 0°C ∼ +40°C (standard) 0°C ∼ +50°C (optional) |
| Operational humidity | ≤ 95% non-condensing |
| Altitude | <1000m normal operation (>1000m derated) |
| Control methods | Scalar control (VF), Vector control with sensor (VC), Sensorless vector control (SLVC) |
| Speed control range | VF: NA; VC: 1% ∼ 100%; SLVC: 5% ∼ 100% |
| Speed control resolution (steady-state) | VF: NA; VC: ±0.1% (depends on encoder resolution); SLVC: ±0.5% |
| Frequency setting resolution | 0.01 Hz |
| Operation interface | 10″ multi-language TFT touch screen |
| Communication | EtherNet/IP (Standard), Modbus RTU, ProfiNet, DeviceNet, Profibus DP (Optional) |
| Other accessories | Input surge arrester & output filter (du/dt) |
| Paint colour | RAL7035 (standard), other colours on request |
| Analog I/O | Standard Inputs: 0∼10V/4∼20mA (2 Sets Expandable) Standard Outputs: 0∼10V/4∼20mA (4 Sets Expandable) |
| Digital I/O | Standard Inputs: Dry contact type (7 sets Expandable) Standard Outputs: Dry cotact type (9 sets Expandable) |
| Safety | Mechanical key, interlock (standard), Fibre-optic firing, Conformally coated boards |
| Standard certification | IEC, CE, GOST, GB, UL, IEEE |