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Low harmonic Variable Frequency Drive for ESP
All-in-one low harmonic VFD solution
Low passive harmonic filter built-in
The input passive harmonic filter, output sine wave filter and 6 pulse diode drive module are integrated in the same high IP rating enclosure for outdoor installation. The input harmonic distortion is about 5%.
Lowest cost VFD for low harmonic requirement
Compared to the multi-pulse low harmonic VFD solution, the filtered 6 pulse diode VFD does not need a phase shifting transformer, which results in a smaller footprint, is easy to transport and install on site, and lower the total cost. It is the lowest-cost solution for low harmonic requirements.
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Specifications
Input power supply3 phase 380V to 480V ±10%, 50/60Hz ±5%
Converter type6 pulse diode 
Inverter typeIGBTs
Input current protectionCircuit breaker
Input surge suppressionIEC test classification / EN type: II/T2

Maximum continuous voltage: 350V(L-PE)

ISCCR: 50kA (max.200A gG)

Voltage protection level: 1500V

In: 20kA 8/20 μs

Imax: 40kA 8/20 μs
Input low harmonicIntegrated passive harmonic filter
Output voltageThe same as power supply
Output frequency0.1Hz to 120Hz
Output waveformHigh performance Sinewave
Motor controlConstant or Variable Torque (V/F)
Motor technologyInduction motor (IM) or Permanent Magnet Motor (PMM) 
Efficiency~96.5% at full load
Power factor0.98 across entire speed range
Overload rating120% for 1min/5min
Certifications ISO9001, ISO14001
Enclosure rating Junction box & main power section: IP66 [ equivalent to NEMA4 ] 

Magnetics section: IP24 [ equivalent to NEMA3R ] 

Backpack section: IP24 [ equivalent to NEMA3R ] 
Cooling system IP66: air-conditioning unit, heat sink

IP24 : forced air cooling
Altitude 0 to 1000m without derating
Ambient operating temperature-30 ℃ to 55 ℃
Relative humidity20% to 95% maximum(noncondensing) 
H2S protectionConformal-coated PCBs & bus bars 
Material Carbon steel, the thickness is 2.5mm 
Line-side terminationCircuit breaker’s lugs in power junction box 
Load-side termination Lugs in power junction box
Control termination Mounting plate on the dedicated swing door 
Safety featuresEmergency stop button

Electronic interlocks 

Separated power and control sections

Backspin indication LED on the front door

Prewired IO junction box
Analog inputs (AI)Qty 2: 4-20mA, resolution 12 bits
Digital inputs (DI) Qty 5: DC24V, sink wiring 
Digital outputs (DO) Qty 4: relay output, NO, up to 5A
Serial communicationQty 1: RS485 Modbus Master (for DHS)

Qty 1: RS485 Modbus Slave (for SCADA)


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Hotline
+86-22-27606488
Address
No.15-1, Ligang Park, Shuanggang Industry Zone, Jinnan District, Tianjin
E-mail
zhangyu@dcus.cn guoliwei@dcus.cn
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