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Portable Instruments
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PORTABLE INSTRUMENTS www.haefely.com

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Tettex – stand alone devices THE EXPERT’S CHOICE Since 1945, our accuracy, reliability and expertise has made Tettex the preferred choice for factory testing, as well as preventive maintenance on site. PRODUCT LINE OVERVIEW CONTENT Applications Accuracy and Reliability, our Keys MIDAS 2880 & MIDAS 2881 Mobile Insulation Diagnosis & Analysing System TTR 2795 & TTR 2796 Transformer Turns Ratio Meters FRA 5310 Frequency Response Analyser RVM 5462 Recovery Voltage Meter 5478 Insulation Tester Technical Specifications Tettex portable instruments are designed for factory and on site testing of...

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Tettex – stand alone devices COMPONENT LIFE TIME The efficient utilization of electrical apparatus in a modern, marketdriven and environmentally friendly power system requires a regular assessment of its state in order to: 1 - Enable well-founded decision making about service conditions, possible extensions of service periods and repair or replacement 2 - Reduce the capital cost of the equipment 3 - Guarantee the highest possible reliability of every equipment 4 - Respond to today’s increased environmental awareness POWER TRANSFORMER APPLICATION EXAMPLE ROTATING MACHINE APPLICATION EXAMPLE

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Tettex – stand alone devices AFTER SALES SERVICES Our after sales service team offers the customer fast and efficient support when requested. Our expert team offers specific trainings both in the factory and on site about the use of our devices. From an instrument calibration to a repair, our customers will always receive a solution from us. We also organize seminars on particular subjects, where customers can share their experiences and can collect additional information. Our library, with hundreds of technical documents, is available to our customers offering them an invaluable source of...

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Tettex – stand alone devices MULTIPURPOSE DEVICE Transformer turns ratio, winding resistance, demagnetization and heat run test in a single device. Large 7’’ touch screen interface with full graphical test visualization. MEASUREMENTS MADE EASY Once connected, perform test on all phases and all tap positions. SELF-EXPLANATORY USER INTERFACE The unique simultaneous winding magnetization method (SWM) allows the 2293 test large power transformers in a fraction of the time other devices need. The tap changer control switch allows complete automatic test without human intervention. REPORTING AND...

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Tettex – stand alone devices ONE UNIT, MANY TESTS COMBINED PARTIAL DISCHARGE AND TAN DELTA TEST The basic unit can measure Capacitance and tan δ (Dissipation factor), power factor, Quality factor, Frequency, Voltage, Current, Power, Losses, Impedance, Inductance and Reactance. The low PD level of the power supply included in the MIDAS allows testing capacitance and tan δ and partial discharge simultaneously in rotating machines. EASY TO OPERATE Self-explanatory user interface with a large graphical colour TFT touch screen. Manual and Automatic test operation. Software assisted test...

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Tettex – stand alone devices FULLY AUTOMATED MEASUREMENT Within half a minute after connecting the measurement cables to the terminals of the transformer, the voltage ratio, turns ratio, ratio deviation, excitation current and phase deviation are displayed. Test configuration and measurements are done in a few clicks by a rotary switch and 4 function keys. ARBITRARY PHASE SHIFT MEASUREMENT HIGHER TEST VOLTAGES With the optional Arbitrary Phase-Shift (APS) feature, the TTR 2796 can measure turns and voltage ratio, phase displacement and excitation current of transformers which do not follow...

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Tettex – stand alone devices ANALYSIS TOOLS The FRA 5310 software and large touch-screen interface guarantees a very easy-to-use instrument. Integrated analysis tools, reporting capability and additional PC software complete this advanced Sweep Frequency Response Analyser. The analysis system allows multiple stored measurements to be loaded for detailed analysis, comparison, verification, reporting, etc. The measured transfer function curves can be displayed as Magnitude [dB], Phase, Impedance , Admittance and Ratio. Differences of curves with a definable limiter function can be calculated,...

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Tettex – stand alone devices TEST INFORMATION A transformer is mostly built with magnetic core, copper, paper; oil and steal, means metallic parts and isolating materials, which form the recognized electrical circuit of the transformer isolation between windings. Resulting curve of repeating the RVM procedure for different charging times provides a graph (max. recovery voltage vs charging time). The maximum of this curve have a direct relation with the water content in the paper. In addition to these geometrical electrical characteristics, water molecules form small dipoles. Water dipoles...

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Tettex – stand alone devices FULLY AUTOMATIC The total current in the body of an insulation system consists of leakage currents, charging currents and absorption currents. These currents are time dependent. The instrument is fully automatic and requires no measuring range adjustment. A large dot matrix LCD displays measuring values and test progress. Up to 1000 measurement results can be stored in the builtin memory. Test reports can be sent via an RS-232 interface. At the start of the measurement the current is mostly dominated by the capacitance charging current. About one minute later...

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Tettex – stand alone devices TECHNICAL SPECIFICATIONS TECHNICAL SPECIFICATIONS WA 2293 WINDING ANALYZER Output Frequency Protection classes Weight & Dimensions Output Power duration Output PD level max Max. Measuring Current Max. Charging Voltage Range 10 .. 1000 Hz Output power derating (max 5 kV) beyond 40..70 Hz Output Current Resistance Measurement Recorded Values Mains Power Supply Voltage Maximum Power Frequency IP22, IEC 61010, CE mark, general IEC 61326-1 Instrument box 58 kg 34 x 47 x 104 cm PC head 7.5 kg 30 x 42 x 26 cm Trolley 11 kg 33 x 68 x 112 cm DF(tan δ), DF(tan δ)@20°C ,...

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Portable Instruments 13Pages

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Portable Instruments
13Pages