Home About Us Products Applications Quality News Testimonials Enquiry Contact Us
  PTC Thermistors
  Thermistor Protection Relay
  Resistance Temperature Detector (RTD)
  Single and Dual Element Stator Winding RTDs
  Thermal Overload Protector (TOP)
  Electric Motor Anti-Condensation Heater
  Thermowells
     
  Intelligent Motor Protection Relay - 2220
 
   
 
Electric motors are crucial component in virtually every industrial automation application or environment. Therefore optimizing their performance and reliability can play a major role in reducing costs and improving overall plant efficiency. Electric motors fail and about half of them fail because of overheating through overload, phase failure or insulation breakdown. There are wide ranges of motors and motor characteristics in existence, because of numerous duties for which they are used and all of them need protection. Fortunately, the more fundamental problems affecting the choice of protection are independent on the type of motor and the type of load to which it is connected. Motor characteristics must be carefully considered when applying protection. It is emphasized because it applies more to motor than other items of power system plant. Protection of motor exists in any form, a variety of designs & either packaged individually or in different combinations. The fundamental and basic aim should be permit the motor to operate up to, but not to exceed its thermal and mechanical limits for overloads and abnormal operation conditions and to provide maximum sensitivity to faults.
 
 
 
 
 
 Features
 
  General Features  
 
As special feature the relay can be used to motor having forward & reverse operations
 
giving the protection except incorrect phase sequence.
Advance Microcontroller based state-of-art technology.
Selectable inverse time curves.
Protection against:
 
  • Unbalance
  • Single phasing
  • Reverse phasing
  • Overload
  • Stalling
  • Undercurrent
  • Earth fault
Common tripping for all protective function.
Thermal overload protection.
Alarm for tripping.
Ultra Compact size.
   
 
  Display Features  
Display of thermal current.
Trip fault indication even after power resumption.
Display of 3 phase current.
 
 Specifications
 
Technical Specifications
Over load characteristics : Select either inverse time characteristics or definite time   characteristics
Overload setting : 30 %to 110% Tripping time: Inverse time : as per thermal curve :   Definite time: (0 to 30 sec)
Undercurrent : 20%-50%, tripping time: 30 sec
Motor stall : 200-600%, tripping time 30 – 300 Sec
Earth fault : 0.3-3A, tripping time: 0.1-20s
Unbalance : 25-100%, Inverse
Phase failure : tripping time: 5 sec
Reverse phase : tripping time: 0.1 sec
Motor start time :0-10 sec.
Reset : Manual reset
     
  Electrical Specifications  
 
CT Input : /5, 15VA
Auxiliary supply : 440V Ac ±15%, frequency: 50 Hz ± 5%
AC burden : 10 VA at rated current
Relay Output : 10amp at 250V
 
     
  Mechanical Specifications  
 
Dimensions : Wall mounting / 35mm Din-rail/Panel
Panel Cutout : 55 x 75 x 109.5(W x H x D)
Weight :450 gm
 
     
   Wiring Diagram  
     
   
     
 
     
 
Being a quality conscious company, we place quality as the nucleus of all our endeavors. Our quality inspectors carefully monitor the entire production process at every level of operation to check that our products conform to relevant quality.
 
 
 
Special attention is given on the procurement of the raw material. We conduct periodic inspections and conduct various tests to make our products flawless. Each and every piece is tested to ensure that it performs efficiently after the consignmen
 
     
  More >>  
  Click here to download our Catalogue






















 
 
Home        |        Trade Enquiry        |        Applications        |        Quality        |        Testimonials        |        Contact Us
 
Copyright @ Thermo System 2011.