MVF20 Series

Suitable for Medium- and High-power Motors

Delta’s MVF20 series is a highly integrated and high-performing variable-frequency device for general-purpose motor control applications. It provides excellent variable-speed control for relevant system fans, pumps, and compressors. The MVF20 series cabinet features an in-parallel cabinet design and is an MVD with high power density and a high space utilization rate.

Product Introduction

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Product Introduction
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Product Introduction

Features & Benefits

System voltage: 3.3–11 kV ±10%
Motor shaft power range: 250–10,900 kW
Requires no rear or side entry to perform repairs or maintenance, making it suitable for installation against walls
Motor cable entry is possible from the top or bottom

Specification

Control power: Single-phase 220 VAC; 5 kVA
System efficiency: >98.5% (at rated; excluding transformer)
Power factor: >0.96 (at rated)
Input current/output voltage harmonics: <5% (at rated), meeting IEEE519-1992 and GB/T 14549-93 standards
IGBT-based cascaded connection is used to achieve different working voltages; the waveform of multi-level output voltage approximates a sine wave
Overload capacity: 110% 1 min/10 min
IP rating: IP31
Cooling method: Forced air cooling
Control method: V/F control; vector control with speed sensor (SVC); sensorless vector control (SLVC)
Control function: acceleration/deceleration speed selection, frequency skipping, automatic voltage regulation (AVR), flying start, field weakening, adaptive deceleration, input undervoltage derating, low-voltage ride through, automatic restart, multi-motor parameter storage
Human-machine interface: 7 inches, multi-language touch screen
Communication method: Modbus RTU
Fitted motor type: induction motor: squirrel cage motor and wound motor, synchronous motor: brushed excited motor