Showing results: 106 - 120 of 146 items found.
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Measurements International Ltd.
The measurement of electric power and energy at high voltages and currents at low power factors is becoming increasingly important economically as a way to reduce costs in an ever-growing industrial economy. Today the transformer purchaser subjects the transformer manufacturer to an economic penalty for losses that occur in load and no-load conditions. To keep these penalties as low as possible, it is important that the manufacturer accurately measure these losses. Failure to do so can result in the manufacturer losing important contract awards to their competitors who may be utilizing a more accurate system. Using “State of the Art” proven two-stage-currentcomparator technology, the AccuLoss™ Series of transformer loss measurement systems is designed to meet the needs of today’s transformer manufacturer by providing the most accurate power loss measurement system in the world. Designed for power frequency testing and calibration, the AccuLoss™ system can be used for testing small, medium and large power transformers as well as motors and turbines up to 400 Hz. The system is also ideal for R&D facilities. The AccuLoss™ system can also be used to measure losses in single and three phase reactors.
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RK7112 -
Shenzhen Chuangxin Instruments Co., Ltd.
The tester is applied to the home appliances, computer peripheral equipment, electric products, communication products, lighting products, small home appliance products, lighting equipment, electronic components, transformers, motors, compressors, electric heat pipe, wire, cable and high voltage safety system’s withstand voltage and leakage current test, as well as it’s an indispensable dielectric
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TRT Standard Series -
IBEKO Power AB
When it comes to choosing a transformer turns ratio tester, TRT Standard series offers some of the most advanced instruments with LCD display out in the market. Each model measures transformer excitation current and phase shift performs automatic vector group detection and magnetic balance on three-phase transformers and three-phase autotransformers. Furthermore, they have a built-in true three-phase power source. Because of that, TRT Standard instruments can test transformers with special configurations, such as phase-shifting, rectifier, arc-furnace, traction transformers, etc.The instruments can output test voltages from 1 V AC to 250 V AC, depending on the chosen model. High test voltage of 250 V AC provides more accurate turns ratio testing compared to other turns ratio testers on the market and extremely low test voltage of 1 V AC enables turns ratio verification of current transformers.TRT Standard series consists of:TRT03 Models (TRT03A, TRT03B, TRT03C) – single-phase voltage up to 100 VTRT3x Models (TRT30A, TRT30B, TRT30C, TRT33A, TRT33B, TRT33C) – single and true three-phase voltage up to 100 VTRT63 Models (TRT63A, TRT63B, TRT63C) – single and true three-phase voltage up to 250 VMore about models differences can be found under the downloads tab, in brochures and comparison sheets.A user can create test templates using the DV Win software and store them in the PC’s memory for later use when in the field.TRT Standard series models have a built-in tap changer control unit. Consequently, it enables remote control of an on-load tap changer (OLTC) directly from the tester. In order to make the most out of this feature, the DV-Win software can be programmed to do everything automatically – running turns ratio tests, changing OLTC tap positions and saving results. This option, especially in combination with test templates, significantly facilitates and shortens the turns ratio testing time.
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LVDT I/O Cards -
Computer Conversions Corporation
100% Transformer Isolation is offered for all AC I/O, and various Isolated DC converters are available as standard product, eliminating concerns for ground-loops, ground interjected (intermittent and ghostly) field noise, inductive surges, differing potentials, and high voltage field transients from effecting the card itself, the sensitive ISA bus backplane and any other device or system sharing these signals.
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◎PW-4063R -
PINTEK Electronics
*Use Toroidal Transformer. Low EMI & High EMS.*Triple output, 0-32V/0-6A X2 and 5V/3A .Max. 400Watts*Tracking operation. Max. output 64V/6A on tracking series or 32V/12A on tracking parallel.*4 display, Green LED shows Voltage and Red LRD shows Current. Easy to read.*Compact design. G.W. 9Kgs only. Easy to handle.*The resolution of PW-4063R as high as 0.01v and 0.001A.*Provide 4Pcs 10turns micro adjust VR for Voltage and Current adjustment. Easy to operate.*Very low Ripple & Noise, less than 0.4mVrms. Very suit for precise measurement.
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B-1020-C -
ROSS ENGINEERING CORPORATION
These supply 120V or 240V AC continuous power for equipment that must operate while at a high voltage to ground or power source. For example, a fiber optic transmitter at the HV level for waveforms to be received and measured or recorded by grounded instrumentation might be powered by an isolation transformer secondary to primary either insulated by potting, oil or air. The low dielectric constant of air insulation provides lower capacitive coupling between the secondary and the primary or ground than would solid or oil insulation. The lower capacitance provides better isolation both at line frequency and especially at high frequency voltages such as lightning or switching transients.
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Analog Devices Inc.
Isolated LVDS (low voltage differential signaling) devices couple differential signals applied to the LVDS receiver inputs across the isolation barrier to the outputs on the other side and re-transmits the bit stream or clock as LVDS. Analog Devices' drop-in LVDS isolators offer designers robust, high speed differential signaling for point-to-point and multidrop applications. Extending iCoupler® chip scale transformer technology for ultrahigh speed data encoding, these LVDS isolators support a a data rate of up to 2.5 Gigabits per channel for a total bandwidth of 10 Gbps. In contrast to expensive fiber implementations, deserialized links over standard digital isolators or optocouplers, and design-intensive bespoke solutions using transformers or high voltage capacitors, ADI Gigabit Digital LVDS isolators offer the only integrated comprehensive, high performance isolation at 10 Gbps. High performance galvanic isolation for applications include analog front-end (AFE), processor to processor serial communication, or video and imaging data (such as HDMI isolators) as well as isolation between boards, or at a cable interface for LVDS or CML signal chains.
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BLC Series -
Behlman Electronics Inc.
The BLC Series delivers all the quality features our customers have come to expect from Behlman; clean sine wave output with excellent line and load regulation, high efficiency and low harmonic distortion. A multi-pulse input transformer offers low-input harmonic distortion and high power factor as required by European standards. Unique protection circuitry provides for over-temperature protection; short-circuit protection and voltage fold-back during overloads to maintain undistorted waveforms.
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YDQW-50KVA/250KV -
Wuhan Sangao Electrical Test Installations Limit Co.
SF6 gas -filled testing transformers are especially designed for GIS in the factory and on-site test, and for testing all GIS switchgears and GIS components such as insulators, insulating tension pole, GIS voltage transformer and so on, the PD test can be performed under the general environment because of the merits of encapsulation, the PD level of our equipment can be lee than 3pC, and it can be added a HV bushing to perform the withstand voltage test at the same time.Small and compact dimensions resulting in minimum space requirements. Light-wight components. Rugged construction to withstand long transportation stresses. Direct flanging to the test object. High safety for tester because of encapsulation of all HV parts. Large range of application in conjunction with HV bushing for withstand voltage test. Built-in HV measuring capacitor and coupling capacitor. Built-in HV disconnecting switch to separate multipath test object connector to ensure the safety of HV testing.
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GTU-300KVA/600KV -
Wuhan Sangao Electrical Test Installations Limit Co.
SF6 gas -filled testing transformers are especially designed for GIS in the factory and on-site test, and for testing all GIS switchgears and GIS components such as insulators, insulating tension pole, GIS voltage transformer and so on, the PD test can be performed under the general environment because of the merits of encapsulation, the PD level of our equipment can be lee than 3pC, and it can be added a HV bushing to perform the withstand voltage test at the same time. Small and compact dimensions resulting in minimum space requirements. Light-wight components. Rugged construction to withstand long transportation stresses. Direct flanging to the test object. High safety for tester because of encapsulation of all HV parts. Large range of application in conjunction with HV bushing for withstand voltage test. Built-in HV measuring capacitor and coupling capacitor. Built-in HV disconnecting switch to separate multipath test object connector to ensure the safety of HV testing.
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Part No. M33-2N -
Teledyne Defense Electronics Relays & Coax Switch
The M33-2N is a military-style DC solid-state relay designed for high-current pulse load applications. It features the latest power FET output technology to minimize ON resistance. This feature provides minimum output voltage drop and allows the M33-2N to switch high pulse currents up to 100 amps at higher temperatures than those allowable with bipolar devices. The M33-2N utilizes transformer isolation to protect against transients, and are through-hole mountedMSL 1 Available options include:M33-2 7Adc, 60Vdc Load; 4.5-5.5Vdc (bias voltage), 80µA (CMOS) Control;
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NEO TELE-TRONIX PVT. LTD
Test Sets For Diagnostic Testing are designed to test Oil Resistivity, Tan Delta, High Voltage Surge Comparison, etc. These test sets are automated instruments used to measure electrical features to insulate transformer oil, liquids and varied other insulating materials. They are ideal for revealing different localized problems and varied weak spots in the insulation. These modern testing sets are designed to provide high accuracy in results. In addition to this, they are easy to maintain testing sets available to ensure accurate readings.
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Megger Group Ltd.
Handheld online PD substation surveying system. The UHF PD Detector is the ideal tool for quick, non-invasive surveys in MV and HV substations and should be part of the toolkit for all maintenance and service teams. Due to its high measurement bandwidth, the UHF method provides accurate local online partial discharge (PD) measurements on HV components such as cable end-terminations, surge arrestors, voltage transformers and isolators.
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xPS Series -
Carl E. Holmes Company
High Voltage SCR Controlled Power Supply, P/N 18278PS Power Rating: 350 KW. Input: 480 VAC, 3 PH, 60 Hz Output: 0 to 5000 VDC, 70 Amps max Ripple: 2 % approximately at maximum rated voltage Configuration: 12 pulse externally SCR controlled rectifier system Protection Devices: Input contactors Overload relay shutoff Input surge suppressor Thermal switches Output current limiting resistor (made with 5 Ohm Kanthal heating element) Emergency power shutoff Cooling: Each 6 pulse rectifier assembly is cooled by three 10” fans Interface: 4/20 ma converter interface for output voltage and output current to SCR controller. Enclosure: The overall dimension of the unit is (78”H x 38”W x 53”D). It is comprised of two separate enclosures each with dimensions of (78” H x 38” W x 26” D) which are integrated together to form a single enclosure. Each half enclosure has one 6 pulse transformer and one 6 pulse high voltage rectifier. Weight: Approx. 5000 lbs. SCR Controller: The 12 pulse SCR controller is supplied by the customer. We were responsible for the 12 pulses Transformer and 12 pulses Rectifier section. Portability: Unit can be lifted up with a fork lift. It can also be moved around with a 5000 lb pallet jack. Transformer: Two 200 KVA transformers are used to step 480 VAC to 3750 VAC each in a 12 pulse configuration Rectifiers: Two 6 pulse rectifier assemblies capable for 5000 VDC and 60 Amps output were used. The high voltage rectifier assemblies are isolated and protected in a fiberglass plenum within the enclosure. Blocking Diode: Each diode of the 6 pulse rectifier consists of 10 diodes in series to offer a blocking voltage of 12000 V (PIV)
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The Motwane Manufacturing Company
Motwane is India’s first company to design and develop an intelligent digital insulation tester that conducts insulation resistance tests on high voltage electrical equipment. Products like transformers, generators, motor cables, bushings, LAs, and switchgear, are prone to gradual degradation over time due to the adverse effects of temperature, humidity, and dust. The gathered test data allows clients to verify the current quality of insulation, and take appropriate action.
