We offer fully microprocessor based, modular in design VVVF Inverters having integrated display unit which is used for programming, fault messaging and running status display of the Inverter Unit. The display shall be in text form.

• Settable acceleration and de-acceleration time.
• Adjustable torque boost facility
• Selectable V/F pattern /ratio
• Starting capability with Heavy Load Inertia of the system
• Ramp down time –200 sec
• Output frequency range of 0-200 Hz with selectable minimum and maximum  frequency.  
• Constant torque mode 0- 50 Hz and 50 - 200 Hz for constant power.
• Potential free fault / healthy status relay contacts for further interlocking.

Following protections are provided :
 

• Current limit
  
• Input phase loss
• Output phase loss
• Phase unbalance
• Stall protection
• DC bus over voltage
• Over temperature
• Over-current during acceleration
• De-accelration and running
• Under and over voltage 

Also known as variable speed DC drives or Thyristor Drives, we offer our large range of DC drives ranging from 1HP to 3000HP. We have more than 15,000 drives are running satisfactorily in India & abroad. A few of the salient feature of our Drive include:

• Full control three phase interchangeable thyristor bridges.
• Drive status indications
• Selection of Armature/Tachogenerator feedback available on card
• Protections – EOC, FLR, Overload, over speed, over temperature, Di / Dt etc
• Input AC supply variations upto ± 15% permitted.     
• Drive immune to input supply phase sequence.
• Surge Voltage Suppression.
• Snubber Circuits across each power device provided.
• Single Phasing Protection.
• Adjustable Current Limit 0-150%.
• Gradual Acceleration of motor with adjustable ramp time of 2 to 30 seconds.
• Front Accessible Test Points at various stages.

GEMCO Digital DC Drives are dedicated for industrial applications in which good static and dynamic performances with coordinated controls of speed, acceleration, torque etc. are essential.
 
Some Features Of Product Are:
 

• Protections - AC Under Voltage, AC Over Voltage, DC Over Voltage, Single phasing, Over Speed, Over Load, Incorrect phase sequence, Over current, Heat sink over temperature, Field Under Current, Overload for converter fan etc.
• Drive control completely managed by inbuilt features resulting in significant reduction in external auxilliary circuits.
• Serial transmission RS485 with external supervisor (Video keyboard or personal computer)
• Employment of digital parameters only, processed and transmitted via serial line from external system or set from operator by external supervision.
• Configurable upto isolated digital logic inputs and outputs.
• Analogue signals: differential inputs, several auxilliary inputs, outputs, configurable.
• Auxilliary serial output for alarms or data.
• 2 on board fault and status displays plus 18 LED local signaling.
• Optional Hand Held Programmer and internal status display.
• Independent auxillary 24V DC power supply, allows employment of different three – phase voltages.
• Adaptive Gain Control
• Auxiliary transducer controls like – encoders, dancer arms, load cells etc.
• Choice of several control and running modes.
• Automatic management of operating sequences.

Drives for Multiple motors machine with cascade controls and internal management of function as :

• Tension controls with diameter compensation, inertia compensation friction compensation etc.
• Length control - positioners and trackings.
• Synchronization of sectional Drives with Draw / Ratio control.

We are well renowned name in the industry for manufacturing a technically flawless range of PLC Based Automation System. Owing to their sturdy construction and compliance with the standards of the industry, these ensure effective power distribution.

• PLC System for Mill Sequence control, interlocks, Speed Reference generation, loop controls complete with softwares and application program.
• PC Based HMI with Supervisory system (SCADA) based on Standard Intellution software package for process overview, fault diagnostics and alarms.
• Suitable communication bus  for communication with HMI

We manufacture high quality Power Distribution Boards upto 6000 Amps Main Bus. These panels are CPRI tested for short circuit breaking capacity of 50KA for 1 second. The Panels offered also conform to IP 54 degree of protection. All Panels are properly pre treated in 7 tank hot phosphating tanks & then powder coated to withstand 1000 hours of salt spray test. Some of the salient features of our PCC's are:

Totally enclosed, self-supporting, floor mounted, dust and vermin proof enclosure fabricated out of 14G/16G CRCA steel sheet enclosure with cross linked foam gaskets on doors.
 

• Fully Compartmentalised in design
• Provisions for future extensions.
• Permanent identification labels shall be provided for each compartment.
• Electrolytic grade tested bus bars – Copper or Aluminium as desired
• Proper Earthing provided at the bottom of the panels throughout the entire length
• Removable gland plates
• Permanent computerized identification labels, ferrules provided.
• Degree of protection IP 54
• Short circuit breaking capacity of 50KA for 1 second.

Totally enclosed, self-supporting, floor mounted, dust and vermin proof enclosure  fabricated out of 14G/16G CRCA steel sheet enclosure with cross linked foam gaskets on doors.
 

• Fully Compartmentalised in design
• Provisions for future extensions.
• Permanent identification labels shall be provided for each compartment.
• Electrolytic Grade tested Bus Bars – Copper or Aluminium as desired
• Proper Earthing provided at the bottom of the panels throughout the entire length
• Removable Gland plates
• Permanent computerized identification labels / Ferrules provided.
• Degree of Protection IP 54
• Short circuit breaking Capacity of 50KA for 1 second. 

Our vast industry experience assists us in the manufacturing of a qualitative range of Control Desk. These are designed to cater to the needs of varied industries including engineering and fabrication. Our precision engineered control desks are mounted with controls, indications, annunciations and other accessories.
 
The salient features of our range of control desks are as follows:

• Compact design
• Easy to maintain
• Simple to operate
• Optimum functionality   

The Active Filter offered by us is an innovative device for the compensation of current harmonics generated by industrial loads and for power factor correction. Its high filtering perfomance combined with the easyness & simplicity of connection make it the best choice for any problem of harmonics.

A few of the salient features of Active Filters are:

• The Active Filter continously tunes the output currents, according to the actual harmonics & reactive conditions of the load.
• The Active Filter also generates reactive currents to compensate the loadreactive power & bring the power factor to the target value.
• The Active Filter is immune to any current harmonics injected into the line by any other nearby load or any another line voltage distortion.
• Owing to its design & operating principle, no undesired oscillations are produced.
• The Active Filter has very low power loss & is very efficient.