OUR PRODUCTS
DISTRIBUTION TRANSFORMERS
SERVO VOLTAGE STABLIZERS
FURNACE TRANSFORMERS
ROLLER TYPE SERVO VOLTAGE STABILIZER
DRY TYPE TRANSFORMERS
PACKAGE SUB STATION
VARNISH IMPREGNATED
CAST RESIN TYPE
AUTO TRANSFORMER &
CUSTOMISE TRANSFORMER
 
   
 COMPANY PROFILE  

Introduction

L.D.Power Transformers Pvt Ltd. manufacturer & repairer of comprehensive range of distribution & power Transformer including the Transformers for special applications.

Quality Policy

Quality Assurances an important part of the company's policy and confirming to the IS 2026, BS 171, IEC76, IS11171, IEC 726, & IS 9815 (As Applicable).


Product Range

We are one of the experienced manufacturer as well as repairer of all special type Transformers from 10 KV A to 5000 KV A in class and servo voltage Transformers.


 
Construction of Product :


Core


The core is constructed from lamination of Cold Rolled Grain Oriented, low loss electrical sheet steel confirming to the latest International Standard which define its physical characteristics such as freedom from scale, degree of waviness, brittleness, tolerance on thickness, the inherent loss due to hysteretic and eddy currents, the permeability, and the methods to be employed to ensure compliance with lhe specification. Each lamination is coated with both sides with insulation which is unaffected by continuous operation in oil at temperatures normally experienced in Transformer service. The core, which is of interleaved construction, with mitered joint to reduce iron loss and magnetizing current, is designed to have a uniform flux distribution throughout the magnetic circuit.


Winding


Transformer winding are designed to meet three fundamental Requirements: mechanical, thermal and electrical.
They are cylindrical in shape and are assembled concentrically. Paper insulated conductors of high conductivity soft drawn copper used, comply with the latest Indian Standard, both HV & LV winding are wound with adequate bracing and securing tapes in order to accieve a strong, self support structure. Insulation between layers and turns is based upon the impulse test level of the voltage class of winding as specified in IS 2026.


Tappings


Tapping are brought away from the winding by means of flexible conductors, heavily insulated with paper, and supported by insulated tubes or cleats to prevent movement under service conditions.


Tank Construction


All tank are fabricated from mild steel which is electrically welded, cooling radiators are welded or detachable depending on the size of the transformers. The cooling radiators are of pressed steel, electrically welded. AII tanks are pressure tested before leaving the fabrication shop of factory.


Ovening


The ovening of the transformer is carried out in well ventilated, electrically heated ovens for a period determined by electrical testes. The transformer is then fitted with dehydration oil confirming to I S 335.


Tests


Before dispatch, all transformers are subjected to routine tests in accordance with IS: 2026, or to such tests as the customers specification requires.


Benefits


Energy Saving under non-liner loads:
Pollution of power systems is due to injection of harmonics under non-liner condition. These condition are found in case of pumping application, industrial application like thyrister drives, are furnaces etc. Under such environment will have 5 time greater energy saving than CRGO core transformer.


Energy Saving


The no load loss is a continuous loss taking place after energisation during the period of operation. In case of amorphous core transformer, no load losses are reduced by 75% when compared with conventional transformer. If we compared the marginally higher initial one pays with saving in the electricity bills, the pay beck in majority of the cases will not exceed 2/3 years. Annual energy savings
(Rs) = (NLL of CRGO – NLL of AMT) in Kw x 24(hrs) x 365 (days) x 4.5 per Khw

 
       
   

An ISO 9002: 2000
Certified Company
   
     
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