Frequency Converter Standard Features

PCTI frequency converters with include a 6 pulse input rectifier, IGBT based on a DSP PWM technology (digital signal processor, pulse width modulated).   A variety of computer interfaces are available to meet all of your inverter programming and control requirements. 

Input Service:  Any 3 Phase AC Input

AC Input Frequency:  60Hz or 50Hz typical, contact the factory for others

Efficiency:  85% at full load

Power Factor:  0.8 to unity at full load and nominal input

Protection:  Input Circuit Breaker

Power Range:  10KVA to 312KVA

Output Service:  Any voltage

AC Output Frequency:  400Hz, 50Hz, 60Hz or others on request

Frequency Regulation:  + 0.05%

Regulation:  1% independent phase regulation for combined no load to full load at rated input voltage change

Control Technology:  Digitally synthesized Pulse Width Modulation

Wave Shape:  Pure Sinewave

Crest Factor:  1.41 + 0.1%

Transient Response:  500 ms for  a 90% load change on any phase or combination of phases

Current Limit:  110% of load

THD (Total Harmonic Distortion):  less than 2% THD, 1% on any single frequency, less than 4% for non-linear loads

Power Factor:  0.9 lead to 0.7 lag.  Continuous zero lead to zero lag at full rated output without damage to the unit.

Overload capacity:  125% for 10 minutes, 150% for 2 minutes, 200% for 20 seconds and 300% for 6 seconds

Input Circuit Breaker

Output Circuit Breaker

Output Contactor

E&F Interlock with bypass feature

Overvoltage

Undervoltage

Overcurrent/Overload - will withstand output short circuit cleared by internal circuitry

Output Underfrequency

Overtemperature

Input to output transformer isolation

Automatic Line Drop Compensation

Automatic Input Line Monitoring

Built in Test and Protection Monitoring

MIL-STD-704F Compliant

MIL-STD-461 Compliant for EMI/RFI

Standard conformance to IEC, NEMA, NEC, IEEE and other Mil-Spec

Indoor or outdoor enclosures

NEMA Enclosure Types: 1, 3R, 12, 4, 4X

Enclosure types:  mobile, towable, bridgemount or freestanding

Operating Temperature: -5°C to 40°C

Storage Temperature: -10°C to 65°C

Humidity: up to 98% non condensing at 40°C

Power Factor Correction

Audible Alarm

Frequency Meter

Elapsed Time Meter

Mobile unit (pneumatic tires or casters depending on rating)

Dual output

Multiple selectable input voltages

Emergency Mushroom "OFF" switch

Electrical door interlock with bypass

Cable racks for input and/or output cables

Aircraft cables and plugs

400Hz Distribution Panels

Consult the factory for options not shown here:  Contact PCTI about frequency converters.