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Showing results: 6616 - 6630 of 6631 items found.

  • Environmental Chamber

    REXMED REC-200 - REXMED Industries Co., Ltd.

    MOD. REC-200, AC 230/380/415V, 1/3 phase, Environmental chamber, HS CODE: 841989, UNCCS CODE: 484384, UMDNS CODE: 16327, Main construction: SS304, Interior: SS304, Exterior: SS304 powder coated, Insulation: Rigid polyurethane foam and glass wool, Controller: Fix point PID controller, temperature ˚C/PV and ˚C/SV, humidity %/PV and %/SV display and setting, Temperature range: -20˚C~100˚C, Humidity range: 20%RH~98%RH, Constancy: ±0.3˚C ±2.5%RH, Uniformity: ±1˚C ±3%RH, Temperature and humidity sensor: PT 100Ω, Temperature and humidity audio and visual warning and OFFS correction setting, Temperature heater: 1.5KW X 2pcs, Humidity heater: 2.5KW X 1pc, Heat up transition time: -20˚C~100˚C within 35 min, Refrigeration system: Air cooled, single stage, Cooling compressor: Bristol hermetic compressor, Cooling capacity: 1,892 Watts, 6,455 BTU/hr, 1,630 Kcal/hr, Cool down transition time: 20˚C~-20˚C within 45 min, Safety devices: No fuse breaker, refrigerator over load relay, refrigeration high pressure switch, over temperature protector, protection relay, protection fuse, water level control and overheat protector, Chamber: L50 X W60 X H75cm, Capacity: 225L, chamber with key lock, with lamp (DC 12V 50W) X 1pcs and double glass viewing window, testing cable port with cover: Ø25mm, 4 castors, W/S: shelf X 2pcs, standard testing wet cloth X 5pcs, PCV water container X 1pc

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  • Automated Probe Stations 200 - 300mm

    P200L or P300L - The Micromanipulator Company

    The Micromanipulator P300L 300mm semiautomatic probe station comes standard with features such as single-point ground and integrated thermal chuck plumbing. Built for reliability as well as precision, the P300L features leadscrew – leadnut stage and platen drives, a stainless steel platen with removable front wedge and high stability microscope bridge that supports all high resolution long-working distance microscopes.The P300L ‘s versatile controller supports USB and GPIB communications (configured with proper options). The stage X-Y and platen (Z) are motorized / programmable. Microscope motorized / programmable control is also an option. The system may be controlled via scripts and all popular parametric test analytical prober drivers. An indexing script with user GUI and a Labview VI is provided allowing use of the system right out of the box.Micromanipulator strives to ensure our semiautomatic systems are flexible so that applications like Magnetic sensitivity testing, Probe cards, mmW, Wafer & Board level testing. Once you have developed your testing plan we also have great relationships so we can move you into a fully automatic probe station if needed.Joystick control allows for easy and quick operation when programmability is not required. The joystick intuitively operates the station stage, platen, and microscope for systems so configured.The P300L may be configured with a local dry / shielded / dark environment “Top Hat” for low level or low temperature, frost free probing. Three temperature ranges are supported:Ambient (room temperature) to 300C0C to 300C-55C to 300CThe P300L is the station of choice for a high performance, full capability and cost-effective 300 mm semi-automatic probe station.

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  • Hygrometers

    PCE Instruments

    A hygrometer is a device used to measure humidity. Many hygrometer products also measure temperature. A hygrometer that measures both humidity and temperature often is referred to as a thermo-hygrometer. PCE Instruments (PCE) offers a wide variety of hygrometer products used to measure the relative humidity of the air.Since humidity is an important factor in many sectors including but not limited to manufacturing, agriculture, construction, restoration, remediation and heating, ventilation and air conditioning (HVAC), PCE also carries a number of hygrometer devices designed for specific applications such as measuring the humidity in bales of pressed hay or in rolls of paper. A hygrometer also can be used to evaluate heat stress risk in hot work environments like boiler rooms, factories, construction sites and commercial bakeries. To accurately assess heat stress risk, a hygrometer capable of detecting and classifying temperature in relation to the amount of moisture content in the air is recommended. The global standard description for heat stress is the Wet Bulb Globe Temperature Index (WBGT). A combination hygrometer / thermometer, or thermo-hygrometer, can be used to verify the integrity of the cold chain during the transport and warehousing of refrigerated food and pharmaceutical products. This versatile and popular style of hygrometer also is ideal for evaluating the performance of HVAC systems in industrial, commercial and residential properties. If the humidity indoors is too high, mold can occur. Certain types of mold cause respiratory problems and other negative health effects for people living or working in the surrounding environment. In addition, mold that has permeated into the walls or roof of a structure must be removed for safety reasons. Mold remediation and removal, also called mold damage restoration, can be a costly endeavor, which is why preventative monitoring of the humidity indoors is preferable whenever possible.

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  • 6U CompactPCI Quad Core Intel® Xeon® Processor Blade

    MIC-3397 - Advantech Co. Ltd.

    Advantech’s MIC-3397 is a 6U CompactPCI single board computer with a choice of server class processors based on the Quad-Core Intel® Xeon® E3-1125C v2(40W), with DH8900 chipset. The processor is based on Intel® 22nm 64 bit process technology, with up to 2.5GHz clock speeds 8MB L3 cache, Intel® Hyper-Threading, Virtualization, and Trusted Execution Technology, all of which enable the board for applications requiring higher levels of performance and security. The MIC-3397 supports dual channel ECC memory, up to 16GB DDR3 at 1333/1600MHz with max 8GB on board and 8GB SO-DIMM memory, three 2.5” Serial ATA interfaces (one on board optional with one 8 GB NAND flash, two to RTM),one Cfast slot, five Gigabit Ethernet ports (two on front panel, two to PCIMG2.16, two to RTM with one optional on the front panel), six USB2.0 ports (three on front panel, three to RTM), two VGA ports (one on front panel, one to RTM) on the 4HP model, three COM ports (one to front panel, two to RTM), one PS/2 port, and one PCIe2.0 x4 interface reserved for user define extensions on the rear transition module. MIC-3397 Series can be installed in a standard CompactPCI system slot as system master, or peripheral slot as stand-alone server blade without CompactPCI bus communication, it meets the needs of applications operating in harsh enviroments and is ideally suited for datacom, telecom and military applications. Its outstanding graphics capabilities make it a good choice for image-processing in medical, defense system and many other vertical segments applications.

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  • 3U OpenVPX PCIe/ Ethernet Hybrid Switch

    MIC-6030 - Advantech Co. Ltd.

    The MIC-6030 is a ruggedized single-slot 3U OpenVPX switch providing high-speed, low-latency interconnects between VPX blades connected to PCI Express and Ethernet backplane fabrics. An ExpressLane™ PEX8733 PCIe Gen3 switch connects to six PCIe Gen3 x4 ports enabling non-transparent and transparent bridging of processor blades for highly flexible multi-host and legacy configurations. A Marvell® Link Street® 88E6390X Ethernet layer 2 switch with VLAN support switches gigabit Ethernet traffic between VPX blades connected to the Ethernet fabric enabling a linerate control plane. When configured with optional Mellanox ConnectX®-4 Multi-Host™ Technology and drivers, the MIC-6030 enables high speed communication of up to 10Gbps bandwidth between up to 4 processor VPX blades VPX by transforming the PCIe bus into a programmable network interface, facilitating the development of data communication between boards and eliminating the need to program a more complex DMA interface. The onboard BMC firmware based on Advantech’s IPMI core technology brings an advanced set of system management features and can be customized when unique features are required. Lightweight switch management is available via the BMC, supporting tagged and untagged VLANs, port-based VLAN, and port status reporting. Advantech offers standard designs with either convection or conduction-cooling. A conduction-cooled heatsink ensures operation in harsher environments, providing a reliable solution for operation in extended temperatures, and where extreme shock and vibration requirements must be met. The MIC-6030 is compact, light and robust, meeting stringent size, weight, and power (SWAP) demands.

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  • Power Phase Converter Single phase 220VAC to 3 phase 380VAC Converter

    SDT-40KW - Zhejiang Sandi Electric Co., Ltd

    SANDI SDT series single-phase to three-phase converter, adopted SVPWM modulation control technology, which can convert ordinary single-phase power to industrial three-phase power. After through SDT series single-phase to three phase converter power conversion, the three-phase power output is standard pure sine wave, the harmonic distortion rate (THD) is less than 2%, totally meet the national standards of three-phase power quality, applicable to all types of load.The SDT series single-phase to three-phase converter can solve production inconvenience because of some areas with the three-phase electric power restrictions, also solved some user requirements that can?謒?apply for the three-phase electric because of space limitation.Features1) Using the fifth 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) Two kinds of start mode: Reduction 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?謒?usage, which reduced the cost of equipment investment, easy to connect wires and control.3) Pure sine wave output with good transient response less than 50ms, waveform distortion is very little, higher conversion efficiency and stable output voltage.4) Adopted low frequency transformer which ensure the input voltage and output voltage are completely electrical isolated to avoid interference.5) Using SVPWM space vector algorithms, high conversion efficiency, high instantaneous power and low losses conversion efficiency up to 94%.6) Output AC Power is suitable for all types of electric appliances, electric tools, electric motors etc. higher capability of driving load.7) Converter has the function of filtering the grid disturbance and interference at the same time, which is a good performance of stabilized voltage and frequency power, to provide a more stable and pure power supply environment for the backend devices.8) Output perfect protection function, with output over-voltage, overload, short circuit, over temperature, self-diagnosis protection and other protection.9) High conversion efficiency, high instantaneous power and low load loss.10) The input voltage, output voltage, frequency and phase can be custom made.SpecificationModel SDT-40KWIsolation mode Low Frequency TransformerAC InputRated voltage (Vac) 240V single-phase 60HZVoltage range (Vac) 190-270VInput current (A) 167AAC OutputRated power (KW) 40KWRated voltage 240V ± 2%Output phases Three-phase with Neutral wires (L1, L2, L3 + N)Rated current (A) 96AOutput frequency 60Hz ±0.05 (50HZ can be set)Waveform Pure sine waveVoltage accuracy Load balancing≤1%、Unbalanced load≤5%Waveform distortion rate (THD) Linear load≤2%、Nonlinear load≤3%Dynamic Response 5%，≤50ms (load 0～100%)Power Factor (PF) 0.99Inverter Efficiency ≧85%Electrical insulation properties 2000Vac、1 MinuteProtection FunctionOverload Ability 150%、10sProtection Input under voltage, overvoltage, output over-current, short circuit, overheating etc.Display LCD+LEDMethod of working Working continuouslyCooling method Intelligent fan coolingShort-circuit protection No automatic recovery, need to restart the machineWorking Environment & Mechanical dimensionDegree of protection IP20 (indoor)Working Altitude（m） ≤3000mWorking temperature (℃) -20～+50℃Relative humidity (℃) -25～+85℃Noise (1 meter) ≤60dBReference size: (W x D x H) 750×750×1480mmReference net weight (Kg) 340Kg

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  • ARINC825 Cards

    AIM GmbH

    AIM’s ARINC825 cards can work either with full functionality as an active CAN node for testing and simulating or in listening only mode for monitoring and recording purposes of Avionic CAN bus (ARINC825) applications on up to 4 electrically isolated CAN bus nodes concurrently. All nodes are in conformance with the ISO11898-1/-2 standard. They are accessible by software separately and can be used as 4 independent CAN bus nodes. An onboard IRIG-B time decoder allows users to accurately synchronize single or multiple modules to a common time source. All supported signals are available through front I/O and rear I/O interface. ARINC825 cards consist of FPGA based CAN interface controllers as well as a FPGA based 32-bit microcontroller core and a separate processor for IRIG-B synchronization with high resolution time stamping. All nodes are operating concurrently at CAN bus high speed bit rate of up to 1Mbit/s with the intelligence to process scheduling of CAN frames in real time onboard to significantly off-load the host processor.For embedded applications the AMC825-4 PMC module is available in a conduction cooled version. Using AIM’s family of PCI, CPCI (3U and 6U) and VMEbus carrier cards for PMC our clients have off the shelf solutions in a broad range of card formats. ARINC825 (CAN bus) modules are delivered with an Application Programming Interface (API) and Driver Software compatible with Windows, Linux and VxWorks.An ARINC825 Resource Component is available for AIM’s PBA.pro™ databus test and analysis tool including Tx and Rx simulation capabilities, a Chronological Bus Monitor and support for decoding of payload data within CAN messages. This allows to implement a powerful ARINC825 (CAN bus) analyzer or a complete test system in conjunction with other AIM avionics databus interfaces and PBA.pro™ supported 3rd party hardware.

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  • Advanced Solar Charge Controller with 48V/96V/120V/192VV/240V/360V

    SDC360V-100A - Zhejiang Sandi Electric Co., Ltd

    The solar charge controller is the intelligent devicewith integration of controlling . It has good running performance with LCD display and convenient operation. Also have multi protection functions such as over-charge, over-discharge protection, and pole-confusion protection for storage battery. The controller is adopted PWM charging mode. It has day and night two type working mode with high reliable and safe operation, high efficiency, long service life functions.Technical Features:The solar charge controller adopts industrial-grade chips to ensure the stable feature of controllerExcellent EMC designHigh efficient PWM charging technology which has three charging stages (buck charging stage, equalize charging stage and float charging stage), and improves battery storage efficiency and charging efficiency.Advanced battery activation technology which increases battery lifetime 30% at least and improves the system performanceThe 120a solar charge controller adopts imported IGBT power module or MOSFET as electronic switch which can improve the stable performance of controller. There aren’t any mechanical switches in the systemLCD will display the system status and working parametersParameters setting flexiblyUsers can parallel connect lots of the controller is a systemFully enclosed duct design and high speed fan for cooling making the controller working in a variety of harsh environmentsDC output function (Optional)Standard Modbus protocol for RS-485 communication to extend the communication distance (Optional)The 120a solar charge controller will alarm when the system status is abnormalNew SOC method displays battery power accuratelyWith power generation statistics function to facilitate the view of power generation of daily, month and totalThere is temperature compensation function which will compensate the temperature according to different battery typeThe 120a solar charge controller adopts graphical dot-matrix LCD and 4 buttons as HMI for full menu and easy operationRTC time functionWall mounting type is easy for installation

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  • Climatic Chamber

    Wewon Environmental Chambers Co, Ltd.

    Climatic chamber is designed to do high temperature & high humidity, high and low temperature, or temperature cycling test, Climatic chamber mainly used for quality checking and assessing their quality reliability and life test. ● The climatic chamber simulate a full range of temperature testing and humidity testing conditions.These chambers are designed for ease-of-use, reliability and performance and include many user-friendly features standard with your purchase for the best value in the industry. ● Climatic test chambers are able to provide rapid product temperature change rates and use varying levels of relative humidity to locate design problems prior to shipping your products, improving product quality and reliability. climatic chamber For conditioning of samples prior to testing. Climatic chamber also can be used for a variety of materials of high – low temperature alternating test. The test temperature, humidity, time can be programmed. Provides conditions of temperature form -70 degree to +150 degree and of humidity from 20% to 98%. ● This type climatic chamber use 16bit Industry-grade PLC, programmable controller to control the test temperature test, and recycle time, more excellent anti jamming, high reliability of the data. ● TEMI880 large color LCD touched screen temperature & humidity controller. Real-time display program running time, the number of segment, the remaining time, repeat frequency,can display experimental data, including the pre-set segment time, heating status, calendar time, etc; climatic chamber directly digital display. ● Climatic chambers apply controllable silicon step-less adjusting technology to adjust temperature and humidity test continuously and precisely, and without over heated as the PID adjusting function. ● The thermal insulation material between outside and inside for climatic chamber is high-quality ultra-fine glass fiber insulation cotton, good thermal insulation effectivity. Thermal insulation layer composed of flame fire PU + glass wool insulation (insulation thickness 10.0 cm)

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  • Paper Moisture Meters

    PCE Instruments

    A paper moisture meter measures the humidity of paper and paper products. Use of a paper moisture meter can prevent costly damages resulting from paper expansion or shrinking. A paper moisture meter determines paper moisture content based on either absolute humidity or relative humidity. Absolute humidity does not take into consideration temperature, while relative humidity relies on temperature and is expressed as a percentage of the total amount of moisture possible at the current temperature. Thus, many paper moisture meter devices feature automatic temperature compensation (ATC).For paper producers, paper manufacturers, paper mills and others in the pulp and paper industry, moisture and humidity control is essential, especially during the production process, as excessive moisture can lead to warming of the paper rolls. A paper moisture meter can be used to detect moisture streaks during the paper production process as well as to identify optimal drying times.Regardless of whether paper is stored in paper rolls in paper converting plants or stacked in sheets and paper bales in commercial printing warehouses, the porous surface of paper gradually takes in moisture relative to the humidity of the surrounding environment. This moisture can be problematic, as too much moisture can cause curling, buckling or the formation of waves in otherwise flat paper products. Moisture also can prevent inks, dyes, paints and coatings from covering and saturating paper properly during printing and processing.PCE Instruments (PCE) offers digital handheld moisture meter devices for measuring the moisture content of paper and paper products such as cardboard, paperboard, corrugated boxes, craft paper, wrapping paper, brown packaging paper, butcher paper, recycled paper, coated paper and more. Different paper moisture meter models utilize different paper moisture measuring techniques, performing moisture content tests of paper products via either destructive or nondestructive methods. Typically, a standard pinless paper moisture meter is nonpenetrating, thus allowing for the nondestructive measurement of paper water content.

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  • Multiprotocol P104Plus Interface Board for Embedded Applications or Avionics Test & Simulation Applications

    EXC-4000P104plus - Excalibur Systems, Inc.

    The EXC-4000P104plus is a multiprotocol P104plus interface board for embedded applications or avionics test and simulation applications. Each board holds up to five independent modules. Two on-board modules use the MIL-STD-1553 communications protocol (M4K1553Px); another on-board module uses the ARINC-429 communications protocol; two additional detachable modules can be any one of the following types:M4K1553PxS (Single Function - RT validated) This module operates as a Bus Controller, Remote Terminal or a Bus Monitor. This module qualifies for airborne applications.M4K1553Px (Multi Function) This module operates as a Bus Controller, up to 32 Remote Terminals and as a Bus Monitor. Supports an Internal Concurrent Monitor in RT and BC/RT modes.M4K1553Px(S)-1760 Same as M4K1553Px(S) plus MIL-STD-1760 options.M4KMMSI Mini Munitions Store Interface module. Supports RT, BC/Concurrent-RT/Concurrent Monitor and Bus Monitor modes. Up to 8 hub ports EBR-1553 [10 Mbps 1553 protocol using RS-485 transceivers] and 1 monitor output.M4KH009 Based on our H009 family. This module operates as a Central Computer Complex (CCC) and/or up to 16 Peripheral Units (PUs) simultaneously, or as a Bus Monitor. In addition, a Concurrent Bus Monitor enables concurrent monitoring of the bus during CCC and PU simulation.M4K429RTx Based on our ARINC 429RxTx board. This module supports either five or ten ARINC 429 channels each of which can be configured in real time as a receive or transmit channel.M4K708 This module supports two channels of ARINC 708/453, each one selectable as either transmit or receive.M4KSerial This module supports up to 4 independent channels of serial communications, each of which can be selected as RS485, RS422 or RS232.M4KDiscrete This module supports 20 selectable input/open collector output discretes. The module supports TTL (0 to 5 volts) or avionics (0 to 32 volts) voltage levels.M4KCAN This module supports up to 6 independent channels of CAN 2.0B protocol with standard and extended message frames and message identifiers.

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  • 3U OpenVPX CPU Blade with Intel® Xeon® Processor E3v5 and E3v6 family

    MIC-6330 - Advantech Co. Ltd.

    Based on the Intel® Xeon® E3 Lv5 and Lv6 embedded platform, the MIC-6330 builds on the success of Advantech’s 6U VPX boards, and is the first 3U VPX product launched by Advantech. Together with the Intel® processor, the MIC-6330 offers intense computational ability in a very compact form factor. The MIC-6330 provides configurable connectivity (up to four ports) of PCI Express via the backplane to the highest performance mainstream peripherals and I/O cards, and vast I/O functions for extended interconnectivity and controllability. The MIC-6330 meets various computing needs, including vPro™ and workstation capabilities, by using the Intel® CM236/CM238 PCH. The MIC-6330 offers high storage capacity at up to SATA 6Gbps transfer speed. Four USB2.0 ports and one USB 3.0 port to the backplane fulfill requirements for extra I/O ports or storage, up to 5Gbps data rate. Four GbE ports (two ports configurable as SERDES) support system level IP connectivity, and the UART interfaces (RS-232/422/485 selectable) can be leveraged as an interface to legacy devices and consoles. Like Advantech’s 6U VPX products, the MIC-6330 supports multiple displays, and the maximum resolution of the MIC-6330 is 4K, empowered by the Intel® integrated graphics engine. The MIC-6330 also offers a High Definition Audio to the backplane interface for media demands. With the standard ruggedized convection cooled heatsink or the optional air-cooled heatsink, the MIC-6330 is tailored for harsh environmental applications and adaptable to various chassis designs. The industrial NAND Flash, and the soldered onboard DDR4 ECC memory chips are appropriate for a variety of vehicle applications for the maximum reliability. The MIC-6330 is sophisticated and suitable for various purposes. An onboard X8D XMC site with PCIE x8 gen.3 connectivity can host high speed offload or I/O mezzanines for project-specific applications. For applications that need the maximum expandability, the XMC interface can be modified to add another DisplayPort and the 2 more UART. The optional front I/O module facilitates the development and qualification process, and also enables the possibility of the front panel access.

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  • Power Supply

    NZXT HALE90 750w - Rexus Corp.

    *80+ Gold certified: The HALE 90 series from NZXT operates at ultra high efficiency, at 20%, 50% and 100% loads, efficiencies are 87%, 90%, and 87% respectively.*Single140mm two ball-bearing fan operates with minimal noise even at full load. Maximum decibel levels are 20db for wattages between 550-750W and 30db for 850W and above.*Strong Single Rail Design: A single +12V rail provides stability and ease of use making the most out of your power supply. Offers stable & clean current delivery under heavy load.*Modular cable design: Modular cable design allows the user to pick and choose which cables they want to use, optimizing cable management and airflow inside the chassis. Flat cables allow for easier routing and bending inside the computer chassis during wire management.*Hybrid LLC resonant Topology circuitry allows the HALE series to create highly efficient power supplies ranging from 550W-> 1000W.*Full range Design from 100V – 250V with Active PFC.*100% Japanese Capacitors: High quality components for longer life time and better reliability.*Latest CPU support for all the latest INTEL and AMD CPUs like Corei7, i5, AMD Phenom II X4, X3.*Latest GPU support, ideal for latest DX11 GPUs and comes with 8pin and 8(6+2) pin PCI-E connectors.*Large tower support: The Hale Series of power supplies have extended 8pin CPU connectors for wire management in large cases which have PSUs mounted at the bottom.*Compliance with ATX 12V v2.2, EPS 12V v2.91, and SSI EPS 12V v2.92 Specifications.*Environmentally Responsible: Consuming less than 1W during shut off status Complies with the newest EuP ( Energy-using Products) requirements and USA Energy star standards.*Continuous Power: The HALE 90 series listed wattage is the continuous operating wattage.*Keeping it safe: The HALE series offers over voltage, current, power, under voltage, and short circuit protection. The power supply will automatically shutdown to prevent any damage to your system or misuse.

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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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  • Natural Cooling Input 380VAC 3 Phase to Output 190-300VDC 10A-40A Rectifier Battery Charger

    SD230D20ZZ - Zhejiang Sandi Electric Co., Ltd

    SANDI “SD” series intelligent high-frequency switch power supply modules are specially developed to meet the demands of modern DC system. The charger rectifiers are designed with world leading patent technology “resonant voltage type soft switching power supply technology”. They feature high efficiency and stability, intelligent control, small size and light weight. Standard RS-485 interface, easy to connect with automation system. “Four remotes” functions, intelligent management. The products are widely used in power plant, substations and etc..Main characteristic of the moduleModularization design, realize N+1 backup;The friendly man-machine interface. Large screen to show, realize man-machine dialogue operate really.RS-485 inrerface, realize “4 remote” function with monitor machine.High efficiency, Nearly 95%-96%;Lightly, 230V/10A natural cooling module only 9kg;Little volume, 230V/10A natural cooling module dimension only 325mm×230mm×130mm;After the full bridge rectifying circuit rectifies 3-phase AC to DC, then adjusted by reactive PFC, power factor>0.94;Function against reverse pour: each module has been added diode against reverse pour at output terminal.LED digital screen, digital calibrate, stable current ,fault alarm Main characteristic of the ModulesThe friendly man-machine interface. LED digital screen, digital calibrate, stable current ,fault alarmHigh efficiency, up to 95%-96%;Light weight, Small sizeAfter the full bridge rectifying circuit rectifies 3-phase AC to DC, then adjusted by reactive PFC, power factor>0.94;Unequal current ratio of parallel connection＜+/-3%, can ensure twenty modules work well by parallel connection.Multiple protections including over/under voltage, current limiting, short-circuit, parallel protection, over-temperature protection.Output over-voltage protectionTo prevent the disastrous accident caused by output overvoltage, there is overvoltage protection circuit in the module. Once the output voltage is higher than the threshold, the module locks up automatically and fault indication light is on, the faulty module quits work automatically and doesn’t affect the normal operation of the entire system.Output current limiting protectThe output current cannot increase infinitely. The maximum value of the output current of each module is limited to the rated output current 105%, in this range, the output current value of the module is continuously adjustable. If the load output of the module, the module will play down the output voltage.Output short-circuit protectionWhen short circuit, the output voltage drops to 0 immediately. Limit the short circuit current under 15% of rated output current. The module will not be damaged under short circuit state for a time, and resumes to work automatically after debugging. Module parallel protectionThere is parallel protection circuit in each module to ensure that when the fault module quits the system, the normal work of other modules and the system won’t be effect.Output over-current protectionThe output current cannot increase infinitely. If overloaded, the output voltage decreases automatically to protect the power components. The over current protection can be resumed automatically.

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