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Showing results: 4186 - 4190 of 4190 items found.

  • 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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  • 6U CompactPCI 4th Generation Intel® Core™ i3/i5/i7 Processor Blade with ECC support

    MIC-3396 - Advantech Co. Ltd.

    Using 4th generation Intel® Core™ i3/i5/i7 processors based on 22nm process technology supporting up to four cores / eight threads at 2.4GHz and 6MB last level cache, the MIC-3396 blade boosts computing performance deploying the latest virtualization, techniques and CPU enhancements. Onboard soldered low voltage DRAM (1.35V) with ECC support and optional memory expansion via an SODIMM socket extend the memory to a maximum of 16GB supporting the most demanding applications in high performance or virtualized environments. Dual channel design and memory speeds up to 1600MT/s along with increased cache size and cache algorithms guarantee maximum memory performance. Combined with the powerful Intel® QM87 chipset, the 4th generation Intel® Core™ processors offer improved I/O performance by leveraging 5GT/s DMI and 3rd generation PCIe interfaces. An onboard XMC/PMC site with PCIe x8 gen.3 connectivity can host high speed offload or I/O mezzanines such as the MIC-3666 dual 10GE XMC card. With SATA-III support and up to 7Gbps I/O. the latest enhancements in storage technology such as high speed SSDs or traditional HDDs can be used on the MIC-3396. Five gigabit Ethernet ports based on Intel® GbE controllers for front and rear,including two PICMG 2.16, ensure best in class network connectivity The processor’s integrated enhanced graphics engine (Iris) offers twice the performance over previous generations. With triple independent display support, the MIC-3396 is an ideal fit for demanding workstation applications. RASUM features integrated in the CPU and chipset combined with PICMG 2.9, IPMI-based management make the MIC-3396 a highly available and reliable computing engine. The RIO-3316 RTM module supports one PS/2 connector with both keyboard and mouse ports, one USB 3.0, two USB 2.0 ports, two RS-232 ports, two SATA ports, two DVI ports, and two Gigabit Ethernet ports. In case of the SATA disk drives and SATA RAID support of the QM87 do not meet performance and reliability requirements, the RIO-3315 SAS version supports a 4-port SAS controller with RAID and fail over support.

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  • All in one system 32KWH LiFePO4 Lithium Battery with AC Charger and 15KW Inverter for mobile vehicle application

    SPVLI-32KWH-INV15KW - Zhejiang Sandi Electric Co., Ltd

    Our All in one system 32KWH LiFePO4 Lithium Battery with AC Charger and 12-15KW 120/240V Inverter for mobile vehicle application ESS including LiFePO4 Lithium Battery with BMS, off grid pure sine wave inverter, AC/DC charger.All-in-one design, high integration and space saving installation；Using high-performance lithium iron phosphate cells, laser welding, good cell consistency, designed service life of more than 10 years； Charging and discharging are controlled separately, which is convenient and reliable to control charging and discharging. The discharge port will not be disconnected when over-charging, and the charging port will not be disconnected when over-discharging, the system has good stability；Master-slave mode, passive equalization, can manage the equalization resistance, can set the equalization start voltage difference, and monitor the equalization resistance temperature, more intelligent and safe, and reduce the impact of barrel effect on system energy storage；BMS adopts NXP(USA) automotive-grade high-performance chips, with strong anti-interference, good reliability and wide temperature range；CAN2.0 communication interface, has the advantages of strong real-time performance, long transmission distance, strong anti-electromagnetic interference ability；System parameters can be set through the host computer, such as fan start/stop temperature, charger maximum current setting, charge and discharge current correction, SOC correction, with insulation leakage detection function to prevent oil leakage and short circuit of the cell；Integrate Solar charge controller or AC charger optional, BMS communication control, more safe and reliable;Cell temperature management, can be automatically controlled with the air conditioner heater according to the cell condition to make the cell works at the most suitable temperature, and can be linked with the fire protection system as neededModel SPVLI-30KWH-INV12KWIsolation mode Low Frequency TransformerInverter PartBattery Input Rated Voltage (Vdc) 307VDC Voltage range (Vdc) 278-400VAC Output Rated output power 12KW Output waveform Pure Sine Wave Rated Voltage 120/240VAC Phases Split phase + N + PE Rated current (A) 50A(Phase Current) Frequency 60Hz Power Factor (PF) >0.95 Inverter Efficiency >92% Display LCD Overload Ability 150%, 35 secondsAC-DC Charger PartAC Input Voltage range(Vac) 180-240VacDC Output Rated voltage(Vdc) 330Vdc Rated current(A) 20ALithium Battery PartCell/Number 105AH/96PCSRated voltage 307VMax charge current 20AMax discharge current 100ACharge temperature range 0℃ ~ 50℃Discharge temperature range -20℃ ~ 50℃Cell charge end voltage 3.6VCell discharge end voltage 2.7VProtection Function Protection Input reverse polarity, under voltage, over voltage, output over-current, short circuit, overheating etc. Cooling method Fan-cooledDegree of protection IP20(indoor)Mechanical Dimension Depth* Width * Height 645x891x767mm Weight (Kg) 378Kg

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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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  • 40kw High Efficiency AC/DC Power Supply Charger 100-750VDC Charging Rectifier 100A Battery Charger

    SD750100G - Zhejiang Sandi Electric Co., Ltd

    40kw High Efficiency AC/DC Power Supply Charger 100-750VDC Charging Rectifier 100A Battery Charger is for DC battery system charging station. With three-phase non neutral conductor AC input, it has the advantages of high efficiency, high power density and low harmonic. 50-500Vdc output voltage range optional, suitable for all types of batteries.FeaturesProduct Introduction：SAND AC/DC Charger is specially developed for DC chargers module. It has high efficiency, high power factor, high power density, high reliability advantage. AC input 3 phase or single phase, DC output voltage range from 100 to 750VDC can be set, compliant with CE safety requirements, EMC standard EN61000-6-3 and EN61000-6-1 Class A, it is an advanced international level charger module.Unique function：● High efficiency over the full load range, full load efficiency greater than 95.5%● Wide output voltage range, 100-750VDC, suitable for a wide range of Lithium and lead acid battery● 5-inch LCD touch screen, easy to operate● Flexible application, charging voltage, charging current, charging time, timing charging can be set by LCD screen, easy to operateMain features：● Powerful protection, overheating, short circuit, overload, overvoltage, undervoltage, etc.● Three phase active power factor correction technology, reduces the harmonic interference to the grid● Dual DSP design, achieve the full digital control, less components means high reliability● Wide input voltage range, allows operation in most poor grid conditions● Soft start charging and soft shutdown minimize the impact on the battery.● Input, output have protective circuit breaker switch● Module adopts hot pluggable design, which is convenient for maintenance.● CAN/RS485 interface (Optional)SpecificationModel SD750100GAC input Input system Three phases + PEVoltage range 280Vac ~500VacRated voltage 440VacFrequency range 50Hz/60HzMaximum current <74AITHD (total harmonic distortion) <5%DC output Output power 40KWVoltage range 50-750Vdc ( can set)Constant power output voltage range 400Vdc-750VdcOutput current range (A) 100A ( 1~100A can set)Output current limit 1-100A continuously adjustableSteady voltage precision <±0.5%Steady current precision ≤±1% (rated range of 20% ~ 100% for output load)Load regulation rate ≤±0.5%Startup overshoot ≤±3%Peak-to-peak value noise ≤1% (200~1000V, 0~20MHz)Display Indication Light Green LED: normal operation,Yellow LED: alarm, Red LED: failureDisplay language EnglishDisplay 5’ LCD touch screenPower factor and THD Power factor ≥0.90 Full-load output power of @20%~50%≥0.98 Full-load output power of @50%~100%≥0.99 Full-load output power, input nominal voltage and frequency of @100%THD ≤5% Full-load output power of @50%~100%Protection function input overvoltage Protection Over Under Voltage automatic shutdown and restart when voltage return normalOutput overvoltage protection Over Under Voltage automatic shutdown and restart when voltage return normalOver-temperature protection Automatic shutdown. Automatic restart when the temperature return to normalShort circuit protection Automatic shutdown and lock, need power off to restart to unlockEfficiency Under Rated input voltage ≥95.2％

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