Three Phase 400Hz Frequency Converter

Doer DFC-JD-400 series 3 Phase 400Hz frequency converter is primarily designed for applications where there is a need for 3 phase 400hz frequency AC Power Supply as required. This makes it as ideal AC Source in avionics testing, marine vessel loads,navigation systems, aviation and military equipment, with DOER 3 phase 400hz static frequency converter to deliver a 115/120V three phase 400hz ac power to match the requirement of the load.

  • Power Ratings (1kVA to 300kVA)
  • Adjustable Output Voltage 0-208V(L-L)/0-120V(L-N) & Frequency 400Hz (Optional 300Hz-500Hz)
  • Galvanically Isolated with Pure Sine Wave Output
  • Simple to use and Operation
  • PWM IGBT Design – Double Conversion
  • Front Control Panel with Output Metering – Frequency,Voltage, Current and Power
  • 2 Years / 24 Month Warranty
  • Fast Delivery: 15-20 days

General Specification Datasheet of 3 Phase 400Hz Frequency Converter

MODEL NOS.DFC-JD-400FX* or DFC-JD-400AJ*
- Phase:3 Phase 4 Wire (3P+N+GE) or 3 Phase 3 Wire (3P+GE)
- Power Capacity:17 Model Ratings: 1kVA,2kVA,3kVA,6kVA,10kVA,15kVA,20kVA,30kVA,45kVA,60kVA,75kVA,90kVA,100kVA,125kVA,150kVA,200kVA & 300kVA
- Topology:Sine Wave Pulse Width Modulated (SPWM)
INPUT
Either Single Phase or Three Phase Single Phase: 100V-127V,220V-240V (L-N); Three Phase: 200V-240V,380V-480V (L-L)
*Voltage Swing ±15%* *Select one voltage value*
- Frequency:50Hz/60Hz (40 to 70Hz optional)
- Rectifier:6 Pulse (12 Pulse optional)
- Power Factor:0.8-0.9PF
OUTPUT
-Three Phase:Three Phase, 0-208V(L-L) / 0-120V(L-N); 115V/120Vac (L-N) rated. 0-480V(L-L) optional
-Voltage Stability:≤±1%
- Frequency:400Hz fixed, 300Hz-500Hz adjustable available
- Frequency Stability:≤0.02%
- THD:Pure Sine Wave Harmonic Distortion:<3% for Linear Loads
- Front Panel Display:4 Digital Display & Control Panel, voltage & Frequency adjust, On / Off Push Buttons
- Digital Metering:Output Frequency – 4 Digit LED Display; Output Voltage – 4 Digit LED Display; Current Load(Amps):  – 4 Digit LED Display; Load (Watts) or Kilo Watts -4 Digit LED Display.
- Overload Protect:110% for 15s, 2x max current rating within 1 second shut off
- Short Circuit Protect:Output Cut Off Immediately (Input & Output Circuit Breaker Protection)
- Noise:1 meter 60db to 70 dBA  (dependent on model rating)
- IP Rating:IP20 / NEMA1 (Option IP54 / NEMA3 )
- Size & Weight:Dependent on model rating and configuration.( Please consult to seller )
- Certificate:CE. Reference Standards EN60204, EN61000
- Warranty:2 Years / 24 Months from date of supply
-Working Temp.:-10℃ - 45℃
PHYSICALPower Connections:cables Input & Output (with bottom cable entry for floor mounted converter and converter with castors. With rear cable connection for rack mounted converter)
  • Top Cable Entry
  • Enclosures fitted with 100mm plinth
  • Towable Trailer Type Static Frequency Converter
  • Remote Monitoring via RS485/RS232 (Modbus Protocol)
  • Voltage Free Contacts: 1 volt free contact for status of the system output. NO/NC mode.
Frequency converters have both maximum kVA (Apparent Power) ratings and kW (Active Power) ratings – Kilowatt (kW)=kVA multiplied by Power Factor. Generally speaking, Equipment nameplate ratings are commonly stated in kVA. If using equipment nameplate ratings to size frequency converter, user maybe configure the system to be correctly sized based on kVA ratings, but actually exceeds the frequency converters kW rating. It minimises the risk of exceeding the kW rating of the converter by sizing the kVA rating of a load to be no greater than 70% of the kVA rating of the converter. Nevertheless, unless you have high certainty of the kW ratings of the loads, the safest way is to keep the sum of the load nameplate ratings below 70% of the converters kVA rating.
If the load type is inductive such as motors (aircons, pumps, etc), relays and transformers or capacitive type such as capacitors,it is essential that high inrush current,short-time overload factors and too low power factors are fully considered. Take motor (without a soft start facility) for instance, the start-up current 5 to 7 times the stated rating of the motor it is recommended that a Frequency Converter is selected that is 3 times the stated rated capacity of the load and that the inrush current does not exceed the “Max Output Current Rating” of the converter.

Topology Design of 400h Frequency Converter

The architecture of the system is reliable in design that help to increase personnel safety on site as well as improve overall system availability. Topology and working principle with IGBT SPWM technology, SFC typically follows an AC-DC-AC topology, comprising Rectifier and Inverter stages with isolation transformer and AC filter.This topology enables the SFC to provide efficient conversion and pure sine wave power to loads. AC-DC-AC conversion ensures clean output with low harmonic distortion. Robust control circuits enable precise frequency & voltage regulation, supporting diverse applications. The lightweight construction suits mobile installations. Adaptability to harsh environments.

static frequency converter topology design-doerpower

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