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Description-
Variable frequency drive control panel (also named VFD panel, AC drive electrical control panel) is consisted of inner VFD inside the cabinet with external control, protect, display and other electrical, it's an frequency conversion device to control three phase AC motor (including fans and pumps) in variable speed to save energy.
Why VFDs Panels?
The two main features of VFD are adjustable speeds and soft start/stop capabilities. These two features make VFD’s a powerful controller to control the AC motors.
Benefits Of VFD:
Variable frequency drives not only offer adjustable speeds for accurate and precise control applications, but also have more benefits in terms of process control and conservation of energy. Some of these are given below.
Energy Saving
More than 65% of the power is consumed by electric motors in industries. Both magnitude and frequency control technique to vary the speed consumes less power when variable speed is required by the motor. So a great amount of energy is conserved by these VFD’s.
Closed Loop Controlling
VFD allows accurate positioning of the motor speed by continuously comparing with reference speed even at changes in the loading conditions and input disturbances like voltage fluctuations.
Limits Starting Current
Induction motor draws current which is of 6 to 8 times the nominal current at starting. Compared to conventional starters, VFD’s gives better results because it delivers low frequency at the time of starting. Due to low frequency, the motor draws less current and this current never exceeds its nominal rating at starting as well as operating.
Smooth Operation
It offers smooth operations at starting and stopping and also reduces thermal and mechanical stress on motors and belt drives.
High Power Factor
Inbuilt power factor correction circuit in the DC link of VFD reduces the need for additional power factor correction devices. The power factor for the induction motor is very low for particularly no-load application, while at full load, it is 0.88 to 0.9. Low power factor results in poor utilization of power due to high reactive losses.
Easy Installation
Pre-programmed and factory wired VFD’s offers easy way for connection and maintenance.
Purge and Pressurized panels
Flameproof and Explosion Proof Panels
SIL Safety PLC systems
Distributed Control Systems
IEC 61439 Type Tested Assembly panels
Technical Specification:
We offer VFD Panels conforming to the following specifications:
| System | 3 Phase, 3 or 4 wire, 50Hz |
|---|---|
| Rated Current | Up to 5000 Amps |
| Operational Voltage | 230/380/415/440v AC |
| Rated Insulation | 1000v |
| Rated Service Voltage | 690v |
| Ambient Temperature | 45 Deg C |
| Short Time Current | Up to 65KA for 1Sec, 105KA peak |
| Degree of Protection | IP42-IP65 |
| Form of Separation | Up to 3B/4B |
| Type Tested for | Short Time Current withstand Temperature Rise Degree of Protection |
| Bus Bar System | Interleaved above 3200A |
| Bus Bar | Aluminum or Copper |
| Feeder Configuration | Semi Dropout or Fix Type |