The Single Phase TTR, Transformer Turns Ratio Test Set, measures the turns ratio and exciting current of windings in power, potential and current transformers. Deviations in turns ratio readings indicate problems in one or both windings or the magnetic core circuit.

The TTR test set aids in identifying:

Shorted coils
Open circuits
Incorrect connections
Internal faults or tap-changer defects in step regulators as well as in transformers

The instrument measures highly sensitive turns ratios of up to 129.99:1 with accuracy of ½0.1%. An optional auxilary transformer extends the ratio range to 329.99:1.

The TTR set operates on the principle that the voltage ratio of the transformer at no load is practically equal to the true turns ratio.

The major source of error in a transformer is a primary impedance drop due to magnetizing current, which is kept to a minimum by excitation at a fraction of rated voltage. By employing a design that meets both of these conditions along with the use of a null balance system, the turns ratio of a transformer can be determined accurately.

When measuring the turns ratio of distribution and power transformers, the accuracy is well within 0.1%.

Features:

Used for testing single phase power and distribution transformers
Design based on precision bridge measuring technique
Unmatched accuracy (½0.1%) in a portable design

More products MEGGER

MICRO-OHMMETER MEGGER - MOM200A

• Easy to operate
• Designed for rugged field use
• Highly flexible cable connections
• Portable and lightweight, weighs only 14 kg (31 lbs)

PHOTOVOLTAIC KIT MEGGER - PVK320

• PVM210 irradiance meter
• AVO410 CATIV TRMS multimeter
• C4 solar connectors to 4 mm standard plug test leads
• MC3 to MC4 adapter test leads
• PV kit storage pouch

MEGGER DELTA4110 INSULATION POWER & DISSIPATION FACTOR TEST SET DELTA4000

• fully automatic 12 kV insulation power factor / dissipation factor (tan delta) test set
• Voltage: 25 V to 12 kV, 1 V resolution
• Current : 0 to 5 Amps, 0.1 µA maximum resolution
• Capacitance: 0 to 100 µF, 0.01 pF maximum resolution
• Inductance: 6 H to 10 MH, 0.1 mH maximum resolution
• Power factor PF : 0-100% (0-1), 0.001% maximum resolution
• Dissipation factor DF : 0-100 (0-10,000%), 0.001% maximum resolution
• Watt Loss: 0 to 2 kW
• Automatic and manual operation
• Accurate and repeatable measurement results with high noise suppression
• Lightweight, rugged two-piece design

MICRO-OHMMETER WITH DUALGROUND SAFETY MEGGER - MJOLNER200

• Safer testing using the patented DualGroundâ�� technology to test circuit breakers with both sides grounded
• Fully automatic testing- microprocessor controlled
• Wide measuring range and test currents
• High powered and light

MEGGER TRAX MULTIFUNCTION TRANSFORMER TEST SET FOR CAPACITANCE AND DISSIPATION POWER FACTOR

• Replaces the need for multiple test sets
• Powerful, portable and compact system
• Reduces user training and testing time
• Extend the life of power transformers
• 1 Hz insulation condition testing
• Manage and analyse test data

MEGGER S1-1568/2 EXPERT 15KV INSULATION RESISTANCE MEGOHMMETER

• Reliable results in noisy substations
• Accurate testing with RE>Act™
• Remote control for safer, easier testing
• PI Predictor™ cuts test time in half
• Full diagnostic suite with PDC capability

MEGGER MPAC208 ACOUSTIC CAMERA FOR GAS LEAKS, MECHANICAL FAULTS AND PARTIAL DISCHARGES

• Pinpoint issues fast
• Quantify leak and energy loss
• Reliable PD insight
• Works in noisy environments
• Optional thermal overlay
• Available in comprehensive kit

MEGGER FREJA 300 PROGRAMMA RELAY TESTER CF-19091

• can generate 4x150 V (82 VA) and 3x15 A (87 VA) or 1x45 A (250 VA).
• Manual and automatic control
• Easy to use
• Excellent software provides great visuals and simple setup
• Lightweight and portable
• Highly accurate
• User can calibrate unit

UNIVERSAL CIRCUIT BREAKER TEST SETS MEGGER DDA-3000 AND DDA-6000

• Model DDA-1 Digital Data Acquisition Instrumentation and Control System
• High-current output: 60,000 A for Model DDA-6000; 35,000 A for Model DDA-3000
• Digital signal processing (DSP) technology
• Variable pulse time and firing angle output current control
• Compliant with NEMA AB-4 test guidelines

TRMS CLAMP METER MEGGER - DCM1500

• DC and AC current up to 1500 A
• True RMS measurement for greater accuracy
• Large jaw size safely assists with uninsulated conductor measurements
• 750 Vac and 1000 Vdc