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Current Alternates direction of flow cyclically.

See Also: Alternating Current


Showing results: 2371 - 2385 of 2443 items found.

  • EDFA

    SPA-2-4X22-WDM EYDFA - Hangzhou Softel Optic Co., Ltd.

    *Single/dual input for choice, built in optical switch for dual input, the switching  power can be set by the button in the front panel or by web SNMP.*Output adjustable by buttons in the front panel or web SNMP, the range  is down 4dBm*Maintenance function of one-time downward attenuation of 6dBm by buttons in the front panel or web SNMP, to facilitate the optical fiber hot-plug operation without turn off the device*Multi- ports output, can built in 1310/1490/1550WDM.*Standard RJ 45 port for remote control, we can provide output contract and web manager for choice, and also plug-in SNMP hardware can be reserved for update.*With laser key to turn on/off the laser.*With RF test function.*Adopts  JDSU or Oclaro Pump laser*Led displays the working condition of the machine*Dual power hot plug power supply for choice, 90V~250V AC or -48V DC

  • EDFA

    SOA1550-32(64) - Hangzhou Softel Optic Co., Ltd.

    *Single/dual input for choice, built in optical switch for dual input, the switching  power can be set by the button in the front panel or by web SNMP.*Output adjustable by buttons in the front panel or web SNMP, the range  is down 4dBm*Maintenance function of one-time downward attenuation of 6dBm by buttons in the front panel or web SNMP, to facilitate the optical fiber hot-plug operation without turn off the device*Multi- ports output, can built in 1310/1490/1550WDM.*Standard RJ 45 port for remote control, we can provide output contract and web manager for choice, and also plug-in SNMP hardware can be reserved for update.*With laser key to turn on/off the laser.*With RF test function.*Adopts  JDSU or Oclaro Pump laser*Led displays the working condition of the machine*Dual power hot plug power supply for choice, 90V~250V AC or -48V DC

  • Indoor Air Quality, Carbon Dioxide (CO2) Monitor

    Extech CO230 - Extech Instruments Corporation

    The CO230 measures Carbon Dioxide (CO2), Air Temperature and Humidity, plus calculates Dew Point and Wet Bulb. Features Automatic Baseline Calibration (ABC) with disable for use in areas with continuously elevated CO2 levels. Its alarm function with user settable high/low CO2 level is perfect for monitoring air quality and ensuring proper air ventilation in conference rooms, schools, greenhouses, factories, hotels, hospitals and anywhere that high levels of carbon dioxide are generated. The CO230 also calculates Dew Point and Wet Bulb values, Min/Max CO2 value recall function, statistical weighted averages of TWA (8 hour Time Weighted Average) and STEL (15 minute Short Term Exposure Limit), Alarm relay output for ventilation control and wall mount. Complete with Universal AC adaptor and multiple plug types (US, EU, UK, AUS).

  • Primary Current Injection Sets

    R.R.Transformers & Equipments

    Protective devices such as relays, overload Coils, Circuit breakers and CTS etc. must be checked regularly to ensure that they are always ready to operate correctly, Routine current injection testing will quickly detect faulty or incorrectly adjusted protection circuits / devices & will be possible to prevent serious damage to the system. Primary injection kit is designed to operate on single phase 230/240 volts AC 50 HZ to develop smooth & continuous test current as for loading, calibrating, and testing of CTS, Bimetal Relays, Protection Relays etc. The test set gives high current output at low cost and with inherent safety. The primary current injection testing checks all parts of the protection system by injecting current down the cable / bus bars. The application of the primary current injection sets is to ascertain the current carrying capacity of any Conductor, insulator, connector or calibration of CTS / Bi-metallic relays etc.

  • Single Channel USB Programmable Instrumentation Amplifier

    USBPIA-S1 - Alligator Technologies

    The USBPIA-S1 stand alone USB controllable module provides a single channel of high-quality instrumentation amplifier and optional AC coupling, for front-end signal conditioning compatible with all popular A/D converter devices. The USBPIA-S1 is powered with 9 to 12VDC so it can be connected to a battery voltage source or the supplied 115-220VAC adapter may be used for operation with wall power anywhere in the world. When programmed from the USB port, the USBPIA-S1 will remember all of the programmed properties between power cycles. Program once and operate as a stand- alone signal conditioner without having to reprogram for every use. This is perfect for turn-key applications. It's easy to connect the USBPIA-S1 into the data collection system. Input and output signals can be routed through BNC connection or using the detachable screw terminal connectors. Optional SMA type adapters are also available.

  • High-Definition Articulating VideoScope Kit - 6mm Camera Diamter, Wired Articulating Handset, and 3.5" Color TFT LCD Monitor

    Extech HDV540 - Extech Instruments Corporation

    The HDV540 is a light weight VideoScope which includes a wired handset and 6mm diameter camera with 240° articulating tip for best viewing angle. Easy one-hand operation of the articulating camera tip facilitates viewing in obstructed areas where standard camera tips cannot access. Images and videos are viewed on the large high resolution color display or external monitors and can be stored in SD memory card (included) or a USB flash drive. Featuring a glare free close up field of view, AV output for viewing images/video on a monitor, Record voice-over audio in video recording mode and memory storage of 20,000 images. Complete with HDV500 videoscope, handset with articulating probe, SD card, 3.7V rechargeable Li-Polymer battery, 100/240V Universal AC adaptor and multiple plug types (US, EU, UK, AUS), USB and AV cables, and hard carrying case.

  • Fully Automatic Transformer Winding Resistance Tester

    Neutronics Manufacturing Co.

    Measure DC resistance of transformers windings etc. Introduction: The NMC ''TDR'' is a high precision, new generation, light weight large output current and micro-processor controlled tester. This replaces old DC wheat stone bridge and double arm bridge for measurement of DC resistance. ''TDR'' adopts new advanced test current power supply technology, four terminal measurement, digital display of resistance value and test current. ''TDR'' is powered by 220V AC mains single phase supply. The measurements are accurate as the test current is highly stable. High automation is achieved with automatic discharge warning.Principle: The constant current generated is fed to the resistance under test through the current terminals and the voltage drop across the resistance under test is measured and displayed in ohms. A true four terminal measurement is used to eliminate the need for lead resistance compensation.

  • Tensile Strength Tester

    Atico Export

    Capacity of Tester with accuracy of 100g : 250 Kgf. and 500 Kgf.Capacity of Tester with accuracy of 10g : 20 Kgf, 50 Kgf and 100 KgfS Type Load Cell fixed with Top GripTraverse Speed: 300 & 100mm /min.Grip Separation: 1000 mmGrip Separation: 25 mmTop Grip is fixed and Bottom Grip is Movable Type.Elongation measurement by Steel Scale and Digital Counter Meter Both.Digital Display of Load and Elongation.Peak value of last test can be read.User friendly key panel with switch of zero setting and peak value of last testMotor: 1/2 HP single phase 220V 50 Hz. ( for Capacity up to 100 Kgf )Motor: 1 HP single phase 220 V 50 Hz ( for Capacity up to 500 Kgf)Power: 220 V AC 50 Hz.Safety device by limit switch to protect from over traverse.

  • Digital H.V. Insulation Tester(10kV)

    6310 IN - Standard Electric Works Co., Ltd

    ● 2 Lines × 16 Characters LCD● Microprocessor-controlled● Tests insulation resistance up to 20 TΩ● 4 Insulation test voltages: 1000V, 2500V, 5000V, 10000V● AC / DC Voltmeter (30~600V)● Short-circuit current up to 5mA● PI (Polarization Index) indication● DAR (Dielectric Absorption Ratio) indication● Auto-ranging on all insulation ranges● Optical USB to RS-232 data transmission● Well isolated from contact● Well protected from surges● 2 built-in optical LEDs for data transfer● Visual and audio warning of external voltage presence (≥30Vac or ≥30Vdc)● Auto-hold function to freeze reading● Overload protection● Adjustable testing duration: 1~30 minutes● Internal memory for data storage● Displays testing duration for insulation measurement● Auto-off function● 200 measurement results can be saved in memory and recalled on

  • Analogue (1kV below) Insulation Tester

    2732 IN - Standard Electric Works Co., Ltd

    ● High quality Taut Band movement.● Three insulation test voltages(DC) : 250V, 500V, 1000V.● Two continuity test on "low ohms" : 3Ω & 500Ω.● Compact and lightweight.● AC voltmeter with linear scale up to 600 Vac.● 200mA continuity short circuit current.● 1mA test current on insulation test at nominal voltage.● Automatic discharge of capacitive and inductive circuit with charge stored in the circuit under test.● Live warning and display or external voltage presence.● Fuse, air gap, crowbar and overload protected.● On line battery monitoring shows if battery is ok.● Manual zero ohm adjustment.● Low battery consumption.● Mirror scale.● Push and turn locking switch for continuous and hand free testing.● Designed for meet international standards.● Supplied with high quality test leads.● BS 16 edition.

  • Analogue (1kV below) Insulation Tester

    4132 IN - Standard Electric Works Co., Ltd

    ● High quality Taut Band movement.● Three insulation test voltages(DC) : 250V, 500V, 1000V.● Two continuity test on "low ohms" : 3Ω & 500Ω.● Compact and lightweight.● AC voltmeter with linear scale up to 600 Vac.● 200mA continuity short circuit current.● 1mA test current on insulation test at nominal voltage.● Automatic discharge of capacitive and inductive circuit with charge stored in the circuit under test.● Live warning and display or external voltage presence.● Fuse, air gap, crowbar and overload protected.● On line battery monitoring shows if battery is ok.● Manual zero ohm adjustment.● Low battery consumption.● Mirror scale.● Push and turn locking switch for continuous and hand free testing.● Designed for meet international standards.● Supplied with high quality test leads.● BS 16 edition.

  • Digital H.V. Insulation Tester(5kV)

    6305A IN - Standard Electric Works Co., Ltd

    ● 2 Lines × 16 Characters LCD● Microprocessor-controlled● Tests insulation resistance up to 10 TΩ● 4 Insulation test voltages: 500V, 1000V, 2500V, 5000V● AC / DC Voltmeter (30~600V)● Short-circuit current up to 5mA● PI (Polarization Index) indication● DAR (Dielectric Absorption Ratio) indication● Auto-ranging on all insulation ranges● Optical USB to RS-232 data transmission● Well isolated from contact● Well protected from surges● 2 built-in optical LEDs for data transfer● Visual and audio warning of external voltage presence (≥30Vac or ≥30Vdc)● Auto-hold function to freeze reading● Overload protection● Adjustable testing duration: 1~30 minutes● Internal memory for data storage● Displays testing duration for insulation measurement● Auto-off function● 200 measurement results can be saved in memory and recalled on

  • Digital H.V. Insulation Tester(5kV)

    6305 IN - Standard Electric Works Co., Ltd

    ● High contrast OLED display● Microprocessor-controlled● Tests insulation resistance up to 10 TΩ● 4 Insulation test voltages: 500V, 1000V, 2500V, 5000V● AC / DC Voltmeter (30~600V)● Short-circuit current up to 5mA● PI (Polarization Index) indication● DAR (Dielectric Absorption Ratio) indication● Auto-ranging on all insulation ranges● Optical USB to RS-232 data transmission● Well isolated from contact● Well protected from surges● 2 built-in optical LEDs for data transfer● Visual and audio warning of external voltage presence (≥30Vac or ≥30Vdc)● Auto-hold function to freeze reading● Overload protection● Adjustable testing duration: 1~30 minutes● Internal memory for data storage● Displays testing duration for insulation measurement● Auto-off function● 200 measurement results can be saved in memory and recalled on display

  • Digital H.V. Insulation Tester(5kV)

    6304 IN - Standard Electric Works Co., Ltd

    ● 2 Lines × 16 Characters LCD● Microprocessor-controlled● Tests insulation resistance up to 10 TΩ● 4 Insulation test voltages: 500V, 1000V, 2500V, 5000V● AC / DC Voltmeter (30~600V)● Short-circuit current up to 1.9mA● PI (Polarization Index) indication● DAR (Dielectric Absorption Ratio) indication● Auto-ranging on all insulation ranges● Optical USB to RS-232 data transmission● Well isolated from contact● Well protected from surges● 2 built-in optical LEDs for data transfer● Visual and audio warning of external voltage presence (≥30Vac or ≥30Vdc)● Auto-hold function to freeze reading● Overload protection● Adjustable testing duration: 1~30 minutes● Internal memory for data storage● Displays testing duration for insulation measurement● Auto-off function● 200 measurement results can be saved in memory and recalled on display

  • CorSense™ Environmental IoT Sensors

    Corvalent Corporation

    Our line of CorSense™ wireless sensors are capable of monitoring air quality, humidity, barometric pressure, temperature, current, vibration, and more.Built with a rugged case and able to withstand harsh industrial environments, these sensors are all tested to ISO standards. When paired with CorGateway, sensors gather and transmit data securely to a Corvalent CorEdge computer anywhere from 2 to 28 miles away.Extremely energy efficient, CorSense IoT sensors can also run on batteries for up to 2 years.9 different sensor options:-Smart Vibration & Temperature Sensor -CO2, Temperature, Humidity & Particulate Matter Sensor -CO2, Temperature & Humidity Sensor -Temperature, Humidity, Pressure & Air Quality Environmental Sensor -Precision Pressure Bidirectional Differential Sensor -Pressure Bidirectional Differential Sensor -AC Current Monitor -Vibration & Temperature Sensor -Predictive Maintenance Module Sensor

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