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660V Medium Voltage Variable Frequency Converter Drives for Blowers

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GANDO INTERNATIONAL (HONGKONG) LIMITED

660V Medium Voltage Variable Frequency Converter Drives for Blowers

City & Province xiamen fujian
Categories Blowers

Product Details

660V Medium Voltage Variable Frequency Converter Drives for Blowers

Blowers are widely used in cement, textile and steel plants. We take the blowers in clean room for example.

A clean room is virtually dust and/or bacteria free. Clean rooms are used in laboratory work and in assembly or repair of precision equipment. A clean room fan supplies clean air through ventilation systems. This fan runs a system that filters exterior air, maintains temperature and humidity at constant levels, and circulates the interior air through a high-performance air filter while expelling part of the interior air.

 

Application Challenges

·Maintain positive pressure in the clean room.

·Maintain a high quality filtering system at all times.

·Avoid mechanical resonance in the surrounding equipment.

·Detect clogged fans or air ducts automatically.

 

Features of G11 matching blower application

Features

Benefits

Open Loop Vector and V/Hz Control with Torque Compensation

Provides excellent breakaway torque for thick materials and constant torque to maintain mixing speeds under heavy loads.

Preset frequency reference

Preset mixing patterns can be established for different materials.

Auto-Restart after momentary power loss

Mixing can quickly restart after fault or momentary power loss. This keeps perishable foods from spoiling in process.

Power loss Ride-Through

The mixing process in not interrupted during brief power loss (< 5 ms).

 

Power range of G11 VFD

Voltage: 660VAC (450VAC – 690VAC)

Power: 22kw/30HP – 400kw/535HP

 

Specification of G11 VFD

Item

Specification

Input frequency

50/60Hz

Output frequency

0-400Hz

Overload current

150% rated current 1min.

Control mode

Close-loop vector control,  sensor-less vector control,  V/F control

Starting torque

150% 1hz (with PG 0hz)

Control precision

±0.2% (With PG ±0.02%)

Torque precision

±5%

Setting frequency resolution

Digital command 0.01hz; analog command 0.03hz/60hz

Output frequency resolution

0.01Hz

Frequency setting signal

-10V~+10V;0~+10V(20kΩ);4~20mA

Protection function

Over voltage, under voltage, over load, relay, overheat speed stall, grounding, instant power cut compensation( within 2 sec for operation mode. Continue to operate after the power is available), Charging protection( not to display when the dc voltage of main circuit is less than 50v)

Enclosure

IP20

Cooling mode

forced air cooling

Vibration

Less than 0.2g for 20hz

Ambient temperature / Humidity

-10 Degrees~+40 Degrees / 20~90%Rh (no condensation)

 

Tips:

A variable-frequency drive (VFD) is a system for controlling the rotational speed of an alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor. A variable frequency drive is a specific type of adjustable-speed drive. Variable-frequency drives are also known as adjustable-frequency drives (AFD), variable-speed drives (VSD), AC drives, microdrives or inverter drives. Since the voltage is varied along with frequency, these are sometimes also called VVVF (variable voltage variable frequency) drives.
 

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