Frequency Inverter Single-phase 200V class 30KW

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Technical specifications

Table 2.3: Technical Parameters of QD200 Series Frequency Inverters





Rated voltage and frequency

Single-phase 200V class:  200V-240V,50Hz/60Hz

3-phase 400V class:  380V-480V , 50Hz/60Hz

Allowable value of change

Voltage: 380V-15% ~ 480V+10%;  Frequency: ±15%

Main output

Output voltage

Maximum output voltage equals to input voltage

Output frequency

0.5 Hz to 400 Hz

Overload capacity

150% of rated output current for 60s, 200% of rated output current for 2s

Control performance

Modulation mode

3-phase PWM, 2-phase PWM

Control mode

V/f control for constant torque, V/f control for quadratic load, vector control without PG (open loop control),Energy-saving

Setting method of run command

Outer terminal, keyboard panel or serial communication

Setting method of speed command

Analog setting, keyboard, serial communication, UP/DOWN speed setting from external terminal

Speed setting resolution

Keyboard: 0.1 Hz

Analog setting: 0.05/50Hz (10bit)

Speed control precision

V/f control:±2%

vector control without PG (open loop control): ±0.2%

Speed control range

V/f control 1:40

vector control without PG (open loop control)  1:200

Acceleration and Deceleration



switching frequency

1.5 kHz ~ 12 kHz, according to junction temperature automatically reduce the switching frequency

Analog input


2 ways: AI1、AI2


DC voltage or DC current

Maximum input range

AI1: 0 to 5VDC, 0 to 10VDC, 0/4 to 20mA DC receivable

AI2: 0 to 10VDC or PTC probe input receivable

Analog output


1 way: AO1


DC voltage or DC current

Maximum input range

Voltage output: 0 to 10V, Current output: 0/4 to 20mA

logic input




note:2 virtual logic input, capable of configuring AI1 and AI2 into logic input port (positive logic or negative logic)


Source or Sink

Maximum input range




logic output


0.75kW-11kW: pulse signal output (LO-CLO)、relay output 1(T1A、T1B、T1C

15kW-500kW:pulse signal output(LO-CLO)、relay output 1、2(T1A-T1B-T1C、T2A-T2B-T2C

pulse signal output

OC,output frequencycurrentoutput、ect other function

relay output

RA-RB-RC, including a NO contact and a NC contact

Maximum switch capacity:

T1A,T1B: 3A at 250VAC, or 4A at 30VDC

T2A,T2B: 2A at 250VAC or 30VDC

Serial communication interface

RS485 interface supports Modbus protocol.


4-digit LED digital display

For display of frequency setting, output frequency, fault code and parameter setting etc.



Development of VSC200 series frequency inverters follows strict international standards and relevant recommended IEC and EN standards for control devices, especially IEC/EN61800-5-1 and IEC/EN61800-3.


Derating unnecessary when altitude is 1000m or below (Derating necessary at altitude higher than 1000m)

Ambient environment

0.75kW-11kW: Reliable operation at -10 ~ 50°C without derating. When top protective cover is taken off, the environment temperature can be as high as +50 °C. Above +50 °C, the current drops by 2.2% for each rise of 1 °C in temperature. 15kW-500kW: Reliable operation at -10 ~ 40°C without derating.

Storage: -25 ~ 70°C


No condensed water or drip at 5 ~ 95%, In accordance with IEC60068-2-3

Impact strength

15gn for continuous 11ms, In accordance with IEC/EN60068-2-27

Maximum antipollution capacity

Class 2, in accordance with IEC/EN61800-5-1


Protection level

Top: IP41 (without removing the protective top cover). Other parts: IP20

Cooling Method

Forced Air cooling

Installation method

Wall mounted

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Seven, hydraulic coupler speed control method The hydraulic coupler is a hydraulic drive, generally composed of a pump wheel and a turbine, which collectively referred to as a working wheel and placed in a sealed housing. The shell is filled with a certain amount of working fluid, when the pump wheel in the prime mover driven under the rotation, in which the liquid by the blade to promote the rotation, under the action of centrifugal force along the outer ring into the turbine wheel, in the same direction to the Turbine blades are thrusted to drive the production machinery. The power transfer capacity of the hydraulic coupler is consistent with the size of the relative filling fluid in the shell. In the course of work, change the liquid filling rate can change the coupler's turbine speed, made stepless speed regulation, which is characterized by: power to adapt to a large range, from several tens of kilowatts to thousands of kilowatts to meet the different power needs; Simple, reliable, easy to use and maintenance, and low cost; small size, can accommodate large; easy to control and easy to achieve automatic control. This method is suitable for fan, pump speed.
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