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Transformer turns ratio meters and winding resistance analysers

Transformer turns ratio test, or TTR test, confirms that the transformer has the correct ratio of primary turns to secondary turns. Using Transformer turns ratio meters  correctly can help to identify tap changer performance, shorted turns, open windings, incorrect winding connections and other faults inside transformers. Megger’s range of TTR testers are robust to withstand the harsh conditions that some transformer testing in. The range includes varying features to simplify and speed up testing as well as 3 phase Transformer turns ratio meters ,winding analysers  and PT and CT TTR testers.

Adiradh Energy offering   Megger make  True 3phase transformer turns ratiometer TTRU3 and 3-Phase Ratio And Winding Resistance Analyzers  MWA Series in India .

True 3phase transformer turns ratiometer

Megger TTRU3 Transformer turns ratiometer uses a revolutionary design to perform a complete series of measurements on a transformer, including 3Ø step up turns ratio testing (patent pending). 3Ø voltage output offers numerous advantages to testing with today’s busy schedules. The TTRU3 is an important tool for determining the mechanical condition of transformers. All ratio tests are performed in one instrument, with only one 3Ø lead-set connection. The TTRU3 utilizes the latest 7 in. (180 mm) color touch display, as well as an optional printer so results are never lost. This is complimented with remote control which can be operated from a PC, as well as the ability to download results to a USB memory device.

Guaranteed accuracy ±0.05% from -20°C to +50°C

3Ø test voltage – up to 250V

3Ø step up ratio (patent pending)

Phase shifting & zig-zag transformers tested easily and accurately

Smallest/lightest 3Ø test set on the mark

3 PHASE TRANSFORMER TURNS RATIOMETER

TRUE 3 PHASE TRANSFORMER TURNS RATIOMETER

 

Typical problems found using The TTRU3

  • Loose connections
  • Turn-to-turn shorts
  • Broken Strands
  • Winding deformation
  • Tap changer contact problems
  • Core problems

TTRU3 standard features:

  • OLTC Control
  • Test Plans
  • Test Mode / Time – Simultaneous / 10s 3Ø
  • Predictive OLTC Voltage
  • Vector Rotation on Screen
  • Auto Vector Recognition
  • Thumb Drive Export
  • AUX CAN BUS

Testing performed

  • All with one instrument and 3Ø lead-set connection!
  • Ratio – 3Ø Step Up testing for power transformers
  • Phase shift & phase deviation
  • Polarity
  • Magnetic balance/flux distribution
  • Excitation current characteristics
  • Auto vector detection/recognition

Features and benefits

  • 3Ø test voltage – fast testing of all transformers
  • Patent pending 3Ø Step Up Testing
  • Confirm expected nameplate vector configuration
  • Ability to measure actual vs expected phase shift
  • Unique kelvin clamps with adjustable 3-inch jaw
  • Banana plug input for connection to terminal blocks
  • Turns ratio % error vs nameplate with pass/fail
  • PC interface via USB for remote control operation and downloading of test results

Adiradh energy offering True 3phase Transformer turns ratiometer TTRU3 in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai;Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City ; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities

Brochure for True 3phase Transformer turns ratiometer TTRU3 Download

 

3-Phase Ratio And Winding Resistance Analyzers

Adiradh energy offering Transformer Winding Analysers Megger  make Models MWA300 Externally controlled   and MWA 330A Built-in Computer. Transformer Winding Analysers  offer a faster, more efficient testing device through combining TTR and resistance testing in a single unit.

Transformer Winding Analyzer

3-Phase Ratio and Winding Resistance Analyzer

This advanced 3-phase transformer test system provides complete ratio, phase and winding resistance measurements with only one 3-phase lead-set connection. What’s more, it offers portability, a reduced set-up time and increased job safety. Once connected, the MWA300 performs DC resistance measurements on all high- and low-side windings without reconnection. It has an 8-terminal/6-winding resistance measurement capability and doesn’t need any inter-connected boxes, allowing you to test all 6 windings without having to disconnect and reconnect leads. The MWA300 series saves you even more time by using a single software platform, PowerDB, which means you only need one set-up and one easy-to-use test form. The MWA300 series can be used effectively test power transformers, distribution transformers, CTs and VTs, and motors and generators.

The following tests are easily performed with a single instrument, the MWA300 series, and a single 3-phase lead set connection:

  •   3-phase turns ratio
  •   3-phase winding resistance
  •   OLTC continuity (make-before-break)
  •   3 phase core demagnetization
  •   Magnetic balance / flux distribution
  •   Excitation current
  •   Polarity and phase angle deviation
  •   Auto vector detection
  •   Heat-run test

The MWA330A comes equipped with a built-in computer that has a 305 mm (12 in) colour display and touch-screen interface. The computer is designed to control the unit and it can store up to 100, 000 data sets.

Features

  • Combines TTR and resistance testing in one box – faster, more efficient testing
  •   55% smaller, 40% lighter than individual instruments
  •   Only one set of leads required – lighter, smaller and less expensive
  •   One test form – easier, faster to complete
  •   Built-in demagnetisation
MWA3xx effectively tests:
  • Power transformers
  • Distribution transformers
  • CTs and VTs (PTs)
  • Motors/generators
Testing performed
The following tests are easily performed with the MWA3xx, all with one instrument and one 3-phase lead-set connection.
  • 3-phase turns ratio
  • 3-phase winding resistance
  • OLTC/continuity (make-before-break)
  • 3 phase core demagnetization
  • Magnetic balance / flux distribution
  • Excitation current
  • Polarity and phase angle deviation
  • Auto vector detection
  • Heat-run test

Features and Benefits

  • “One-time” 3-phase connection tests all six windings for faster and safer testing
  • No switchbox required, ensuring easier and safer operation.
  • Unique Kelvin clamps with patented adjustable jaws each open to 100 mm (4-in.) as well as banana plug input for connection to terminal blocks – no need for special lead sets, and minimal operator error due to lead connections.
  •  Industrial grade 305 mm (12 in.) bright-color touch-screen display available as an option. Usable in direct sunlight, harsh environments – no need for IT intervention, safely stores results and reports.
  • Checks the contact and timing health of LTC (OLTC) tap changers.
  • Single-person testing of LTCs is provided standard for use with optional remote tap controller (RTC-1).
  •  PC interface via USB for remote control operation and downloading of test results for ease of use.MWA3xx3-Phase Ratio and Winding Resistance Analyzer

Adiradh energy offering 3-Phase Ratio and Winding Resistance Analyzers MWA300 and 330A in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai;Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City ; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities

Brochure for 3-Phase Ratio And Winding Resistance Analyzers MWA300 and 330A Download