Three Phase
Three voltage waveforms at 120°,1/3 of a cycle offset in time.
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Product
SCR CONTROLLER WITH REGULATOR
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The SCR Controller and the Regulator Board are used in SCR controlled power supplies.CEHCO offers single phase and three phase SCR Controllers with Regulator Boards.Click the links below for additional details.
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Product
Three-Phase Converters
SIRIO 3PH 7 ALFA 3PHSAP
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The three-phase converter is an electronic equipment able to vary the RMS value of a sinusoidal voltage by controlling no. 6 controlled, antiparallel-connected conducting diode pairs.Since the wave form is symmetrically split both into positive and negative halfwave, the output voltage average value is not affected and equal to zero. This means that three-phase loads can be fed without gene rating inside the mesh a circulating current with average value other than zero.Moreover, the three-phase converting is obtained with only one control circuit thus ensuring balance between the three linked voltages applied to the load.
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Product
Three-Phase AC Power Source 320 Vrms, 12 KVA, 550 Hz
AC6912L
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Keysight’s AC6900 Series three-phase power sources provide a complete AC and DC power solution by combining the capabilities of a multimeter, harmonic analyzer, and power analyzer in one instrument.
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Product
Three Phase Relay Testing
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Our comprehensive and intuitive relay software speeds up testing times with a vast library of pre-defined test regimes or manual operation.
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Product
Portable Three-Phase Energy Standard
PEWM-3C
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The three-phase energy standard PEWM-3C is used for quick on-site tests of all types of electricity meters – for active, reactive or apparent energy, two-, three- or four-wire connection. Three voltages and three currents are measured at the same time. The current can be measured either via direct connection up to 10A (class 0.1), or with three current clamps (CC) to 120A, 150A or 1000A (class 0.2).
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Product
Electricity Meters Tester
TE30 Lite
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Calmet Smart Calibration Devices
Electricity meters tester class 0.02%. Three phase tester of current transformers and analyser of power network quality. It makes possible electricity meters testing on the site or in the laboratory.
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Product
Transformer Winding Resistance Meters
TWA Advanced Series
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The TWA advanced series instruments are designed for six-winding resistance measurement and simultaneous three phase on-load tap changer analysis of both the primary and the secondary transformer windings. This is performed with a one singlestep cable setup, with test currents of up to 40A. Each transformer configuration has a special measurement algorithm which is optimized for the fast stabilization of test results. The TWA instruments generate a true DC ripple-free current. Both the injection of the current and the discharge of energy from the magnetic circuit are automatically regulated.
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Product
Fault Passage Indicator for Lines
LineTroll R400D
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LineTroll R400D Fault Indicator indicates earth- and short-circuit faults and can distinguish between permanent and transient faults. The indicator has two sensors and use both the electrical field and the magnetical field to detect faults on all three phases.
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Product
Transformer Turns Ratio Meter
TTRM 301
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SCOPE introduces state of the art precision three phase Transformer Turns Ratio Meter (TTRM ) designed for field testing as well as factory testing of power transformers, instrument transformers and distribution transformers of all types. Along with turns ratio, this light weight and reliable instrument measures ratio deviation, phase angle deviation, magnetizing current and detects tap-position of single as well as three phase transformers in charged switchyard condition. The instrument has facility to automatically detect vector group of all majority configurations available. The differant AC voltage selection offers high accuracy in measurement.
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Product
High Impedance Busbar Differential Relay
MIB
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The MIB, a member of the M II family of economical and highly functional digital protection relays, is a microprocessor based relay that provides three phase high impedance differential protection for Substation Bus-bars of any voltage level. Use the MIB also to protect electrical machines like transformers, generators or motors against restricted earth faults.
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Product
Programmable AC and DC Power Source
AFX Series
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The AFX Series is a family of high power, single, split and three phase, AC, DC and AC+DC output capable Power Sources. Available models range from 6 kVA to 90 kVA with available configurations to 150kVA. Using a modern user interface for ease of use, the AFX Series is cost effective and fully programmable for both basic frequency conversion and advanced AC power line or DC power disturbance test applications.
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Product
Metra Power Clamp
400A
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Metra Power Clamp 1000A/400A measures, calculate and displays important electrical pa-rameters of single phase or three phase power system. It also features Resistance, continuity, diode and non contact voltage detection.
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Product
Three-Phase AC Power Source 320 Vrms, 3 KVA, 550 Hz
AC6903L
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Keysight’s AC6900 Series three-phase power source provides a complete AC and DC power solution by combining the capabilities of a multimeter, harmonic analyzer, and power analyzer in one instrument.
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Product
RF Hybrids
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RF hybrids are used for combining multiple power line carrier (PLC) TX/RX units together onto one cable without causing interference between transmitters and receivers. They are also used for splitting PLC signals to go to two or three phases of a power line.
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Product
Multi-output AC Power Supplies (CV/CF)
PCR-LE2 Series
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The PCR-LE2 Series are designed based on the PCR-LE Series that supports single-phase output, single-phase 3-wire output, and three-phase output within the rated capacity by selecting the switch from the front panel operation.The PCR-LE2 series offer the same basic performance, using the common power unit of the PCR-LE Series, with providing easier installation and saving the space more efficiently compare to the individual allocation of the system for a single phase, single-phase 3-wire, and three phase systems. The lineup of PCR-LE2 Series are available in 5 models:6 kVA, 9 kVA, 12kVA, 18kVA, and 27 kVA model.
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Product
Three Phase Electronic Meter DTS999
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Bofa Instrument & Equipment Co., Ltd
DTS999 series Single Phase energy Meter are new and high-tech products adopting special large-scale IC, latest micro-electronic technology and SMT production crafts. It is designed for rough working condition and components selection as foundation, so it can ensure the long-term stable operation. DTS999 series Electronic Single Phase Watt-hour Meter features long life, high accuracy, high reliability, high allowable overload, little power consumption, small size & light weight, etc.
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Product
Universal Clamp Tester
M-310
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MULTI MEASURING INSTRUMENTS Co., Ltd.
The unique U type CT enabled to measure the load current of single or three phase cable without separating the cable to the wires. Leakage current measurements with least affection from the external magnetic field. Wide current measurements.(AC0.01mA-300A)
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Product
Three Phase Secondary Current Injection Test Set
TEST-330B
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Beijing GFUVE Electronics Co.,Ltd.
Three phase secondary current injection test set is testing relay set, protective device, instruments, output ac dc current and voltage source, embedded Window XP system.
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Product
Torque Measurement Systems
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Proper torque measurement is critical in many assembly operations. AIMCO provides expertise and measurement equipment for all three phases - before, during, and after assembly. Tool testing and capability studies can be easily performed in the tool crib or lab. Fine tuning of torque settings and process verification are achieved on the assembly line with rotary transducers. Use our complete line of electronic wrenches for final residual torque testing.
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Product
Crowbar Resistors
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Crowbar resistors are three phase resistance banks which are connected to the rotor windings of the DFIG (Doubly-Feed Induction Generator) such as wind power generator. They are used to prevent damage to the inverter circuits attached to rotor side when a fault occurs in the grid. DFIG power converter, which has a restricted over-current limit, needs special attention during faults in the grid. If the rotor current or DC link voltage reaches the threshold value, crowbar resistors disconnect the converter in order to prevent the generator turning into a squirrel cage induction machine. By crowbar resistors, the DFIG could stay connected to the grid and continue its operation.
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Product
Three-Phase Relay Test Equipment
AK-30
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AC voltage source with 4 channels, current source and aux with 6 channels. DC source can be used simultaneously. Amplitude, frequency and phase angle can be adjusted respectively, independently and continuously; Control via PC via Ethernet RJ45 interface
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Product
AC Source
AFC
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The AFC Series products are single and three phase AC Power sources ranging from 0.5kVA to 2000kVA. This AFC series has a continuous and adjustable output voltage between 5~300V. This allows for quick and convenient 3 scales of preset voltage for high and low voltage simulation. Power is supplied by state-of-the-art IBGT pulse width-modulated power amplifiers resulting in highly efficient power conversion, compact design and maximized performance. With up to 90% efficiency the AFC minimizes heat dissipation so less infrastructure cooling is required.
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Product
High Power AOD Driver
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The Acousto-Optic Deflector (AOD) RF Driver is a three channel, three phase high power driver amplifier intended to drive devices such as the Harris H-902. The driver accepts a single low level RF input and produces three high power phase shifted outputs. The driver features adjustable gain, power monitoring, and programmable automatic protection features. The exceptional linearity and headroom allow the use of multi-tone and complex waveforms with minimal distortion.
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Product
SCR Controlled DC power Supplies
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Variable DC power supplies are AC to DC power supplies with a variable DC output. The output can be varied with an SCR controller. The AC input power can be single-phase or three phases. With single-phase AC input, the DC output ripple is very high (50%). With three-phase AC input, the DC output ripple is low (5%). This would be a key benefit for selecting three-phase AC input instead of a single phase.
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Product
Three-Phase AC Power Source 320 Vrms, 18 KVA, 5000 Hz
AC6918H
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Keysight’s AC6900 Series three-phase power sources provide a complete AC and DC power solution by combining the capabilities of a multimeter, harmonic analyzer, and power analyzer in one instrument.
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Product
High Impedance Transformers
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Osborne high impedance transformers are used to step-up, step-down and isolate voltages in single phase and three phase circuits. A properly designed high impedance transformer can be used an an equivalent to an isolation transformer connected in series with an inductor. The high impedance characteristic may be employed as a current limiting feature in both the primary and secondary circuity.
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Product
Transformers
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Chengdu Mengsheng Electronics Co., Ltd.
As a leading transformer manufacturer, DOREXS is committed to providing a variety of high-performance standard and customized transformers to meet the power needs of various industries.DOREXS has a professional R&D design team and advanced production technology to ensure that our transformers are at the forefront of the industry. At the same time, they are strictly produced in accordance with international standards to ensure that the performance and stability of each transformer are maximized.Our products cover dry type transformers, single phase transformers, three phase transformers, high frequency transformers, toroidal transformers, R core transformers, EI core transformers, isolation transformers and special transformers.If you need to know more about our products and services, please feel free to contact us.
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Product
Secondary Current Injection Test Sets
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Our range of units covers applications up to 200A and includes single phase and three phase units with applications for testing and timing of IDMT relays, thermal overloads, MCB’s and auto-reclosers.
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Product
Calibration Pulse Processor
2401
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TESCO’s Calibration Pulse Processor (Catalog No. 2401) adapts to any Next Generation three phase test board to directly calibrate with three independent single phase standards.
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Product
Secondary Current Injection Test Trolley
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SCR ELEKTRONIKS have developed SECONDARY CURRENT INJECTION TEST TROLLEY for Switchgear items, CT manufacturer and where three phase current application is called for. It is low Voltage, 3 phase Current source with control circuitry, digital read out for test current and trip time measurement. We can select different CT ranges for each phase independently and adjust the current as per the required test Current.
