Showing results: 151 - 165 of 339 items found.
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Handheld Turns Ratio & Winding Resistance Tester TWR-H -
Amperis sl
TWR-H is a handheld, battery operated, fully automatic test set specially designed for turns ratio, phase shift, excitation current and winding resistance measurements of transformers. It can also perform demagnetization of these transformers. Transformer turns ratio is determined by applying AC voltage across high voltage winding, accurately measuring AC voltage across the corresponding unloaded transformer winding, and then displaying the ratio of these voltages. User can enter a transformer’s nameplate voltages, so that turns ratio deviation can be calculated. This feature eliminates any error otherwise caused by an operator’s manual calculation. TWR-H compares measured turns ratio with the nameplate ratio and prints out the % of error for each test. Transformer winding resistance is determined by injecting DC current through a winding, accurately measuring DC voltage across the winding, and then calculating resistance as the ratio of voltage and current. The device generates true DC ripple-free currents. Both the injection of the current and the discharge of energy from transformer magnetic circuit are automatically regulated.
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HA5 -
Summit Technology, Inc.
Our HA5 Current Probe covers the measurement range from 20 milliamps to 5 amps, making it the best choice for measuring very small loads and the outputs of CT (Current Transformer) step-down circuits.
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TWA Advanced Series -
Amperis sl
The TWA advanced series instruments are designed for six-winding resistance measurement and simultaneous three phase on-load tap changer analysis of both the primary and the secondary transformer windings. This is performed with a one singlestep cable setup, with test currents of up to 40A. Each transformer configuration has a special measurement algorithm which is optimized for the fast stabilization of test results. The TWA instruments generate a true DC ripple-free current. Both the injection of the current and the discharge of energy from the magnetic circuit are automatically regulated.
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TWA Standard Series -
Amperis sl
The TWA standard series instruments are designed to measure the resistance of six coils and simultaneously analyze the three-phase tap changer on load of the primary and secondary transformer coils (provided by model TWA40). This is done in a single cable configuration, with test currents up to 40A. Each transformer configuration has a special measurement algorithm that is optimized for rapid stabilization of test results. The TWA instruments generate a true DC current without ripple. Both current injection and magnetic circuit energy discharge are automatically regulated.
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KH23101 -
Beijing KeHuan Century EMC Technology Co,.LTD
The KH23101 current caliper is a toroidal transformer used to measure EMI current. When measuring, the caliper does not directly touch the electrical conductor or the cable under test. The conductor passing through the caliper window is used as the single-turn primary wire of the transformer, and the secondary is designed to be multi-turn. Use with 50 Ω receiving system (such as EMI electromagnetic interference field strength meter or spectrum analyzer). In order to facilitate installation and rapid measurement of EMI current, it is designed as a caliper that can be opened.
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BUX -
Altanova Group
The current boosters allow performing tests up to 2000A, 3000A and 5000A. The option is made of a module, which incorporates a power transformer, which generates a low-voltage, high current output and a metering CT, which measures the output current and sends the metering to eKAM.
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PHPC01 -
Ponovo Power Co., Ltd.
PHPC01 current booster is an accessory which can work together with protection relay test kit to test transformer protection relay testing. It is specifically designed to supply high compliance voltage even at small current range.
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V180 -
Highland Technology, Inc.
The V180 is a single-width VME module that allows accurate and comprehensive measurement of AC power circuits. The V180 acquires powerline current and voltage inputs using approved current transformers and model C750 remote potential transducers.
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NEO TELE-TRONIX PVT. LTD
Contemporary Test Sets For Transformer Industries are developed to recognize the potentially disastrous current transformer errors. They prevent the primary current from overpowering insulation and short circuits. They are used for developing a testing and maintenance plan for addressing the errors before any failure to save money and time. With these powerful test sets, they are sure to perform saturation testing to test the knee point of a signal by comparing primary and secondary windings.
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Zhengzhou SMS Electric Co.,Ltd
For the convenience of the user or the low voltage metering box of electric energy metering, instrument with high precision (0.1)split core type current transformer.
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Pulse Electronics
Current sense magnetics are used as a low loss method for sensing AC current in a circuit and also provide electrical and safety isolation between the source of the current and the measurement circuit. The key parameters for a current sense transformer are the rms current rating (to ensure it does not overheat in the application) and the safety and voltage isolation (to ensure it conforms to the end-application requirements).
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HDFZ -III -
HD Power Test Equipment Co.ltd
HDFZ-III Transformer Power Tester is an multi-function instrument which is used to test accurately a serious of parameters such as capacity, type, no-load current ,no-load loss, impedance voltage of various transformers. The test result of capacity and characteristic can be up to 100% accuracy rate. The capacity measurement range :10kVA~100000kVA。
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PMT20030 -
Power Measurement Technologies Inc.
A hand held instrument for polarity identification of current, voltage and power transformers with an operable ratio range from 1:1 to greater than 5000:1.
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6450 -
The Eastern Specialty Company
The TESCO CT/PT Bus-Bar Safety Protector (Catalog No. 6450) has been developed to assist in the safe disconnect of a hot sequenced current transformer. After service is disconnected, the TESCO CT/PT Bus-Bar Safety Protector is slid over the bus-bar of the load side of the transformer and prevents accidental connection and/or arcing.
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1620A -
Ballentine Laboratories, Inc.
The 1620A provides high accuracy current levels from dc to over 10 kHz for calibrating ammeters, current transformers and shunts. It also provides output current up to 100 Amperes and as such may also be used as a high accuracy power supply, and as a power source in welding and bonding applications.