Laxmi Sales Corporation

We are one of the well-known names of the industry engaged in offering high quality Contact Resistance Meter to the clients. These products are widely used for contact resistance measurement of circuit breakers and joints at test current 100 Amp/200 Amp, with utmost accuracy.

Following are the highlights of these products:

• Procured from the reliable vendors of the market
• Manufactured in compliance with the industrial standards at their end
• These manufacturers use high-grade mechanical and electrical components to manufacture these products
• Available in varied specifications

Offered by us is quality-assured Automatic Tan Delta to the customers, as per their requirements. These products are designed and manufactured as per the market demand at our vendors' sophisticated production unit.

Following are the highlights of these products:

• No manual balancing is required
• Graphical vector for Tan-delta vs voltage
• Comparison of earlier reading with latest
• Since it is a portable system no foundation is required
• Data communication facility through internet can be possible
• Any type of up-gradation in the existing system can be possible

1. DC Current Application: The meter applies a stable, regulated DC current to the transformer winding. 
2. Voltage Measurement: It then measures the DC voltage drop across the winding. 
3. Resistance Calculation: Using Ohm's Law (R = V/I), the meter calculates the resistance of the winding. 
4. Kelvin Bridge Method: For extremely low resistance values, the meter often employs the Kelvin bridge method to minimize errors. 

• Stable DC Power Source: Provides a highly stable, regulated DC current with overload and short-circuit protection. 
• High Accuracy: Offers high precision and accuracy, ensuring reliable test results. 
• Data Management: Includes features for data storage, logging, and printing, with some models offering touch screens and PC connectivity. 
• Temperature Correction: Automatically corrects resistance values to a standard temperature (often 75°C), a critical step for accurate transformer winding resistance tests. 
• Advanced Features: Some testers can perform three-phase winding tests simultaneously, test on-load tap changers (OLTCs), and have built-in demagnetization circuits. 

• Selectable Test Currents: Allows for testing transformers of various power ratings. 
• User-Friendly Interface: Features large LCD screens and touch controls for ease of operation. 
• Data Management: Built-in memory, data logging, and PC communication ports. 
• Portability: Designed for both on-site and factory testing. 
• Safety Features: Includes overload and short-circuit protection and discharge circuits. 
• How it Works
  1. DC Power Source: The meter provides a stable, regulated DC current through the transformer winding. 
  2. Voltage Measurement: It simultaneously measures the voltage drop across the winding under test. 
  3. Ohm's Law Calculation: Using the measured current (I) and voltage (V), the instrument calculates the resistance (R) using the formula R = V/I. 
  4. Temperature Correction: The measured resistance is corrected to a standard temperature (often 75°C) for accurate comparison. 
  5. Data Storage & Printing: Modern meters often include large-capacity memory and panel printers to store and print measurement results. 
  Purpose & ApplicationsHow it Works
  1. DC Power Source: The meter provides a stable, regulated DC current through the transformer winding. 
  2. Voltage Measurement: It simultaneously measures the voltage drop across the winding under test. 
  3. Ohm's Law Calculation: Using the measured current (I) and voltage (V), the instrument calculates the resistance (R) using the formula R = V/I. 
  4. Temperature Correction: The measured resistance is corrected to a standard temperature (often 75°C) for accurate comparison. 
  5. Data Storage & Printing: Modern meters often include large-capacity memory and panel printers to store and print measurement results. 
  Purpose & ApplicationsHow it Works
  1. DC Power Source: The meter provides a stable, regulated DC current through the transformer winding. 
  2. Voltage Measurement: It simultaneously measures the voltage drop across the winding under test. 
  3. Ohm's Law Calculation: Using the measured current (I) and voltage (V), the instrument calculates the resistance (R) using the formula R = V/I. 
  4. Temperature Correction: The measured resistance is corrected to a standard temperature (often 75°C) for accurate comparison. 
  5. Data Storage & Printing: Modern meters often include large-capacity memory and panel printers to store and print measurement results. 

With the assistance of our professionals, we have been able to offer high quality Oil Breakdown Tester to the customers. These products are widely used in various electric equipment that are installed in power system and enterprises.

Some of the other details of the products offered by us are as follows:

• Inner insulation is mostly oil-insulated
• Oil dielectric strength Test is one of the essential routine tests
• Considered as ideal testing device for oil dielectric strength
• Appreciated for their efficient performance