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

Alte produse MEGGER

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• 2, 3 and 4 point testing
• Stakeless (clamp-on) testing capability
• ART (Attached Rod Technique) capability
• Multiple, user selectable test frequencies
• Resistance measurement range to 200 kO
• IP54 rated
• Warning indicators prevent test failure
• Simple one button operation
• Included leads, stakes, calibration certificate and rugged carry case

TESTER RELEE DE PROTECTIE MONOFAZATE UNIPOLARE MEGGER MPRT2145

• Open communication architecture for third party software application
• Small, rugged, lightweight and powerful
• Operate with or without a computer
• Intuitive manual operation with Smart Touch View Interface
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APARAT PENTRU MASURAREA RIGIDITAII DIELECTRICE A ULEIULUI ELECTROIZOLANT MEGGER OTS60AF OTS80AF OTS100AF

• Test voltages : 60 kV, 80 kV and 100 kV
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• 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

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• Provides reliable and accurate test results in noisy high voltage substations
• Four standard models. Full stand-alone functionality or data acquisition models without user interface.
• Fast and safer with DualGround™ testing, both sides of breaker grounded
• On-screen assistance with connection diagrams and test template Wizard
• All models can be controlled via computer

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• Testare diagnostică cu suită completă de teste
• PI Predictor™ reduce timpul de testare la jumătate
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• Stocare încorporată şi export ușor de date
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• Simultaneous winding magnetization
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• TDR1000/3P is suitable for use on both dead or live cables
• Simple operation
• AUTO set up for instant use
• Ultra fast pulse for near end fault identification
• Trace HOLD feature to allow comparison between cables
• IP54 rating offers real life working
• No blocking filters require
• Supplied with fused test leads

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• Măsoară impedanța pe celule de până la 200 V
• Suportă plumb-acid, NiCD și litiu-ion
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• Configurarea și monitorizarea tendințelor ecranului tactil
• USB și card micro SD
• Măsoară curentul AC și DC