Greencisco Industrial Co., Ltd.
Rotary Variable Frequency Converter
Rotary variable frequency converter is a power equipment widely used for airplane,radar,power station,shipbuilding factories,laboratory,navigation,ect.
Application
Aviation, Lab, Factories, Telecommunication, Medical, IT, Motor Manufacturer, Scientific Research, EMI/EMC/safety test,QA/QC safety test, Electric machinery test,Superior power for laboratory,switching power test, AC fan test,transformer test,compressor test,motor test,air conditioner test,copier equipment test,computer/scanner test,SCR test, electrical appliances,electronic ballast test,400HZ converters for military diagnostic system,airport grounding stations, avionics,instruments,ect.
Introduction
Rotary Frequency Converter consists of a 12-pole brushless synchronous motor and a 10-pole synchronous generator. The motor and the generator are mounted on the common shaft (integrative mounting) and operate at the speed of precise 600rpm. The products are designed for the applications which require a clean & accurate 50Hz power output converting from the 60Hz grid line.
The Rotary Frequency Converter have prominent technical advantages on precise frequency output, low operation noise, reliable excitation, precise voltage regulation, outstanding voltage waveform, compact size, easy operation and no radio interference. They also have the high overload capability, best transient characteristics and rugged fabrication, which make them suitable for the applications where continuous service in a harsh environment is required.
Rotary Frequency Converter can be mounted with a weather-proof enclosure, an acoustic-attenuated canopy or a trailer.

Specification

Model No.

RFC400-90

RFC400-120

RFC400-150

RFC400-180

RFC400-200

Motor Type

Brushless Synchronous Motor

Motor Power

96kW

128kW

150kW

180kW

200kW

Rated Input Frequency

50Hz or 60Hz

Rated Speed

Precise 1200rpm

Pole Count

6 poles

Rated Voltage

3-phase 460V (line to line)

Rated Current

138A

182A

213A

253A

281A

Winding Connection

WYE

Power Factor

≥ 0.95

Efficiency

92.80%

93.50%

93.90%

94.30%

94.40%

Excitation Control

Automatic excitation control

Starting Mode

Reduced voltage starting

Max. Starting Current

≤ 1.5 times rated current

Frequency Regulation

Within ±0.1% from no load to full load

Rated Output Frequency

400Hz

Pole Count

40 poles

Rated Speed

1200rpm

Rated Voltage

3-phase 208V or 380V(line to line)

Winding Connection

Wye with neutral

Rated Current

250A

333A

416A

500A

555A

Excitation Mode

Automatic self excitation with AVR control

Steady Voltage Regulation

Within ±1% (0 to 100% steady state, balanced, linear load)

Transient Voltage Regulation

Within ±12% (0 to 100% rated load applied or removed in one single step)

Voltage Recovery Time

≤ 0.1s

Harmonic Distortion

THD ≤ 1.5%,  single harmonic ≤ 1.2%

Crest Factor

1.31-1.51

Rated Power

90kVA / 72kW

120kVA / 96kW

150kVA / 120kW

180kVA / 144kW

200kVA / 160kW

Power Factor

0.8

Duty Cycle

continuous

Insulation

Class H

Protection

IP23

Operation Noise

55dB

Mounting Structure

The motor and the alternator are mounted on the single shaft

Overload Capacity

110% rated load for 1 hour continuous in every 12 hours.

Temperature Rise

No more than 90°C Rise in ambience 40°C measured by resistance

Ventilation

Shaft-mounted fan

Rotor Balancing

G1.0 Grade

Ambient Temperature

-15°C to +40°C maximum without de-rating

Altitude

1000m

Relative Humidity

95% with no condensation

Compliance

IEC60034, NEMA MG1, MIL-STD-704F

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