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Showing results: 991 - 997 of 997 items found.

  • High Voltage Isolation Switch Contact Pressure Tester

    WA1401 - Wuhan Sangao Electrical Test Installations Limit Co.

    Isolation switch is the high voltage switch equipment, it was large and frequently use in power system . The outdoor isolating switch is the only completely exposed in the atmospheric environment electrical equipment, It is also a electrical equipment affected by climatic conditions influence the most direct and most serious. The operating conditions is relatively poor, It is easy to generate fault of mechanical or electrical. Especially the finger contact part is easy to be affected by rain, dust and harmful gas invasion, resulting in poor contact caused fever, provide the spring with contact pressure due to heating and annealing for reducing the pressure, so that more cause finger heat form vicious spiral eventually burn out finger accident. In maintenance often only pay attention to replace the obvious failure and fracture of spring, but spring to reduce the pressure can not judge and replacement, so again in the operation, each finger current distribution by the pressure difference, The greater the difference between the current distribution is not uniform, long-term operation will occur is bad and the overheating. Fever finger will be vicious spiral, a finger contact bad will spread over the entire bad contact. At the same time, there are a lot of isolating switch contact pressure can be adjusted, if in maintenance adjustment pressure is not enough or each finger to adjust the pressure difference will also appear afore-mentioned phenomena.

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  • NEXTest 7

    PK-2030/2032/2033/2036/2037/2038 - Pansco, Ltd

    NEXTest 7 is an advanced and unique tester in the market.  It's designed to check and troubleshoot the pin connections of Display port & HDMI prior to installation on equipment. By using advanced technology to verify the integrity (20 pins + shield) of both display port and HDMI cables, especially for HDTV installation and DIY termination in the field, solving your cable testing need, unlink all of the other testers verify 9 circuits only. It checks for opens, shorts, miswires and intermittent faults in all conductors plus shield continuity, most tester only test for opens. It displays cable map results of both TX (near end) and RX (far end) on the main unit, either on testing before or after installation cables. User can easily read and determine the actual 21 pins configuration on main unit. It employs both auto and manual scanning of 21 wires. Tone Generator mode transmits two selectable tones on each pin for use with Net Probe (PR-06P) optional, enables one to quickly locate a cable. It's capable of testing up to 8 cables and locations at one time. NEXTest 7 especially features a self-learning mode to memorize cable pin out for testing large quantity standard or custom cables for PASS/FAIL a snap, makes testing quick and more efficient.

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  • Trailer Wire Plug Tester

    767943 - Wesbar

    Plug these testers into any car connector and you will have an instant test of running light circuits. Features LED display to show completed circuit for the running lights left turn signal and right turn signal. Auxiliary and electric brake circuit are included on the 6-way tester and auxiliary, electric brake and battery charge are included with the 7-way tester. One piece units with internal ground. Proper installation and set-up of a brake control, when a trailer is not readily available, is possible with the 7-way tester. Current Monitor testing device is designed to assist in determining whether a tow vehicle's 7-way blade car end connector has been wired properly. (Current Monitor is an excellent diagnostic tool for installation, setup and troubleshooting of electric trailer brake controls.) The Trailer Tester is designed to help you quickly identify problems in the wiring of the trailer. This is done by testing the Left Turn, Right Turn, Tail/Marker, Brake and Back Up circuits on the trailer. The tester indicates approximate amount of current in each circuit (i.e. trailer battery). Brake Control Bench Tester is a test device designed to determine if a brake control is working properly. Checks brake control output, independent of vehicle wiring. Simulates many fault conditions including open ground, short circuit, open load and more.

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  • Three-Phase Transformer Winding Resistance Meters

    TWA Advanced Series - IBEKO Power AB

    TWA Advanced series is the latest DV Power solution for three-phase transformer winding resistance measurement and tap changer analysis. They are capable of testing six transformer windings with a single cable connection, as well as three-phase automatic transformer demagnetization. It has the option of the automated test mode, where the instrument operates the tap changer without operator input (minimizing the risk of human error) and records winding resistance results based on pre-selected stabilization criteria.The unique DVtest method of tap changer analysis enables checking the moving contacts of on-load tap changers during the transition, measuring the transition time, detecting open circuits, and many other types of faults. It is performed with 0.1 ms sampling rate, together with the measurement of tap changer motor current which detects motor and mechanical issues. A special proprietary algorithm is used for testing tap changers connected through a built-in series (booster) transformer. The DVtest can be performed either on one phase or simultaneously on three phases. It can also be performed together with the winding resistance test in all tap positions.A unique advantage of TWA Advanced instruments is the capability of simultaneously testing the winding resistance of all three phases of a three-phase transformer connected in a YN configuration. This can significantly speed up the testing– for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.TWA500 is equipped with a large 10.1” graphical touch-screen display, while TWA400 has a 7” graphical touch-screen display. Besides making the interface much more user-friendly compared to older winding ohmmeters, it also enables certain test options that were previously available only with DV-Win software. The most important among them are DVtest, tap changer motor current measurement, “Heat Run” test, test templates, and automatic test mode.

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  • Relay Test Set

    RNT-5A - Neutronics Manufacturing Co.

    This is a portable testing kit in one unit, suitable for testing protective relay, over current relay, earth fault relay, protective device, circuit breaker, tripping coils etc.The set is designed for both laboratory and field use. TECHNICAL FEATURES: INPUT : 230 Volts, single phase, 50Hz. AC. OUTPUTS : : 1) Current Output: a) 0- 1Amp. At 6/60Volts. (Continuous duty). b) 0- 5 Amps. At 6/60 Volts. (Continuous duty). c) 0- 10 Amps. At 6/60 Volts. (Continuous duty). d) 0- 20 Amps. At 6 Volts. (for30 min. duty). e) 0- 50 Amps. At 6Volts. (For 10 min. duty). f) 0-100 Amps. At 6 volts. (For10 min. duty). g) 0-200 Amps at 6Volts. (For 30 sec. duty). Current output is continuously variable and the output is taken out through a multi range C.T. The secondary is connected to an ammeter scaled in 0 to 100%. Output current range 1Amp. To 20Amps. Are selected by current range selector switch with common output terminals and for other three ranges three brass terminals are provided of proper ratting. 2) AC Voltage Output: Continuously variable 0 -230V AC. Capacity- 240VA (Max). OR DC Voltage Output: Continuously Variable 0-240V DC. Capacity-240VA.(max). One change over switch should be provided for selection of Volt. Meter for AC or DC voltage output & either AC or Dc voltage should be available at a time. 3) Time Measurement: 0-9.999Secs. & 0-99.99Secs. in two ranges. Accuracy: 1% CURRENT CIRCUIT: Loading transformer: Double winding loading transformer of suitable burden to provided corresponding current output specified before. One change over switch in current ckt. To be provided for voltage selection i.e. selection of 10volt. Or 50volt. Measuring CT: Multi ratio wound primary current transformer Ratio : 1-5-10-20-50-100-200A/5A. Variable auto transformer: For smooth variation of current output at various ranges selected. Tripping circuit: The current output will be cutoff incase of any overload for the range 200A or even if the relay under test actuated.

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  • Three-Phase Transformer Winding Resistance Meters

    TWA Standard Series - IBEKO Power AB

    When it comes to winding resistance measurement on three-phase power transformers and autotransformers, TWA Standard series offers some of the most technically advanced instruments with LCD display in the market. Both models are capable of testing six transformer windings with a one-time cable connection, as well as three-phase automatic transformer demagnetization. The stored magnetic energy is safely automatically discharged at the end of the test. The built-in tap changer control unit enables automated test mode, where the instrument operates the tap changer without operator input and records winding resistance results based on pre-selected stabilization criteria. This option makes the operator’s job significantly easier.Both models can output test currents from 5 mA to 25 A DC for the purpose of winding resistance measurement. TWA40D has a special test mode for checking the synchronization of on-load tap changers with three phases simultaneously tested in parallel, in which the total test current can rise to up to 40 A DC.TWA40D has additional advantages when it comes to non-intrusive tap changer analysis. The unique DVtest method enables checking the moving contacts of on-load tap changers during the transition, measuring the transition time, detecting open circuits, and many other types of faults. It is performed with 0.1 ms sampling rate, simultaneously with the measurement of tap changer motor current which helps with the detection of motor and mechanical issues. A special proprietary algorithm is used for testing tap changers connected through a built-in series (booster) transformer. The DVtest can be performed either on one phase or on three phases simultaneously. It can also be performed as an additional test simultaneously with the winding resistance test in all tap positions.An additional unique advantage of TWA40D is the capability of simultaneously testing the winding resistance of all three phases of a three-phase transformer (connected in a YN configuration). This can significantly shorten the total testing time – for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.The test leads for TWA three-phase transformer winding ohmmeters are interchangeable with the TRT turns ratio testers, which means that both sets of tests can be performed with a single test lead connection to the power transformer terminals.

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  • 60kw off grid power inverter 110/220V split-phase output converter

    SDP-60KW - Zhejiang Sandi Electric Co., Ltd

    Our SDP series Off Grid Pure sine wave inverter is one of the most advanced DC to AC conversion products in the world, it is suitable use for areas without electricity, vehicles, ships, solar energy, wind turbine and other renewable energy systems and etc, can supply power and provide guarantee effectively for the areas with traffic inconveniences, in the mountains, pastoral, border, island and other areas without electricity. It has the main advantages of high quality sine wave AC output, microcomputer control, humanness design, and it is high efficiency and low no-load loss, and no pollution. The inverter can also supply AC power to all kinds of electric equipment, air conditioners, motors, refrigerators, lights, TV, electric fans and other industrial power supply.1. Using the sixth generation efficient IPM intelligent module from Japanese Mitsubishi, high efficiency and stable performance. It with powerful protection function, the protection for short circuit, over load, over temperature is more safe and reliable. It’s service life can up to 15 years or more.2. Intelligentized, modularized, simple structure design with powerful function.3. Two kinds of start mode: Step-down Voltage Start and Variable Frequency Start. Customers can set start mode according to the type of their load. This function is very convenient for users and also reduce frequency converter’s usage, which reduced the cost of equipment investment, easy to connect wires and control.4. The output frequency can be setting via LCD panel, it’s very convenient for customer.5. The output voltage can be set between -40 % to +20 % of rated voltage. And the output voltage is very accuracy ±1%.6. The DC input voltage range can be set. Over-voltage point, under-voltage point, over-voltage recovery point, under-voltage recovery point all can be setting via the LCD panel.7. Pure sine wave output. With good dynamic response less than 50MS, waveform distortion rate smaller, higher conversion efficiency and stable output voltage.8. Low Frequency Transformer, which ensures that inverter has high efficiency.9. High conversion efficiency, Max. Efficiency≥94%,if 48VDC input,the efficiency can more than 85%.10. Adopts black pure aluminum radiator, which confirms the best radiating performance.11. Powerful data display function. LCD can display the DC input voltage, output frequency, phase voltage, phase current, AC bypass input voltage, output power KWH, time and date, temperature, fault code display.12. Wide input voltage can be set according to customer’s requirement. Input voltage range can be selected from 150-400V or 300-600V or 400-800V.13. Wide input voltage can work without battery and solar charge controller,save more cost and With MPPT wide voltage input function, maximum use of solar power

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