Explosion-proof frequency converter (High voltage series)

Product name        

Flame-proof and intrinsically safe dual power supply and dual frequency converter speed controller for ventilators

Rated input voltage(V)

AC(2×1750V)、AC2×(2×1750V)、AC3×(2×1750V);50Hz

Voltage fluctuation:±15%Frequency fluctuation:±2.5%

Rated output characteristics

Three-phase AC0~3300V,0.5~50Hz(frequency up to 400Hz)

Overload capacity

150%rated current for 60s;200%rated current for 3s

Control motor form

Asynchronous motor,permanent magnet synchronous motor,permanent magnet synchronous electric drum

Modulation

SVPWM space vector PWM modulation

control method

Vector control,VF control

main control

Frequency accuracy

Digital setting:maximum frequency×±0.1%;analog setting:maximum frequency×±0.5%

frequency resolution

Digital setting:0.01Hz;Analog setting:Maximum frequency×±0.1%

Slip compensation

Automatic slip compensation range:0~150%,open-loop speed stability

accuracy 0.5%,closed-loop speed stability accuracy 0.02%

carrier frequency

Self-tuning based on internal temperature,manually adjustablerange 0.7~16kHz

Acceleration and

deceleration curve

Two types of curves:straight line and arbitrary S-curve;seven acceleration times(multi-step speed)

Display

Display operation display

Rated frequency,output frequency,voltage,current,power,motor speed, load rate,etc.

Fault status display

Overvoltage,undervoltage,overcurrent,overload,overheating.phase loss, short circuit,stall,leakage,etc.

Braking

Braking method

Feedback braking,DC braking

braking torque

150%(up to 220%)

Maincontrol operation

Starting torque

More than 150%,zero speed torque is adjustable from O to 100%

Speed control range

Openloop 1:100,closed loop 1:1000(relative rated speed)

process control

Built-in PID regulator can form a closed-loop control system through various transmitters

Automatic voltage adjustment

When the grid voltage changes,it can automatically and appropriately change the basic frequency to protect the motor load capacity.

Frequency setting

Digital setting,analog setting,control panel setting,serial communication setting.power balance setting

Run command given

Control panel given,external terminal given,serial communication given

Analog input/output

0~10V,4~20mA

Operation

control

function

digital input

10programmable inputs to achieve far/near control,forward/reverse rotation, start/stop,and preset speed

Analog output

Speed,load,bipolar load,and PID variables can all be connected to external instruments

Switching output type

10 relay outputs(250V/10A contacts)

Switching output

Operation output,fault output,remote controlstatus output

Communication function

Modbus-rtu,Modbus-tcp,CAN communication

Usage

environment

Application scope

Dangerous places with gas,coal dust and explosive gas

Altitude

The altitude is not less than-1500m and not more than 2000m(over this altitude,derating is required)

ambient temperature

-20℃~40℃

Relative humidity

5%~95%RH(no condensation)

Protective function

Overvoltage,undervoltage,overcurrent,overload,overheating,phase loss, short circuit,stall,leakage,etc.

Explosion-proof signs

Exdb[ib Mb]I Mb

cooling method

Circulating water cooling(or external water supply cooling)

Power

Size(L*D*H)(mm)

Weight(T)

630~1600kW

3369×1100×1300

4.6

1800~2200kW

3438×1214×1256

5.0

2×630~1600kW(Two-in-one)

3684×1093×1256

5.5

3×630~1600kW(Three-in-one)

3955×1254×1450

6.2