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Three Phase
Three voltage waveforms at 120°,1/3 of a cycle offset in time.
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Phase Sequence Indicators (Contact Type)
865 PR
Standard Electric Works Co., Ltd
● The 865 PR is a detector with LEDs to show the de- tection better visible than neon. ● Three functions in one unit, including open phase, phase sequence and 3 phase motor rotation.● Designed for checking a wider range of 3 phase power source from 100V to 600V.● Indicates R.S.T LEDs which frequency range from 40Hz to 400Hz.● Wide range detection of motor frequency range from 2Hz to 400Hz.● Fixed magnets for convenient measurement.
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Three Phase Transformer Ratio Meter
*Three phase lead switching network. *Excitation current meter Accessories: Range Extender 1:5
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Electricity Meters Tester
TE30 Lite
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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3-Phase Ratiometer
PWR1-3B
The RATIOMETER PWR1-3B is constructed to measure the transformation ratio, phase error and magnetizing current of power- and distribution- transformers for all three-phases simultaneously. Voltage and current transformers are single phase, power transformers normally three-phase. Due to the bad quality on industrial lines (phase jitter and shifting, voltage differences between the three phases) all measurements normally are done single phase, even on three phase ratiometers.
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Power Stabilizers
Manufacturer of a wide range of products which include 100 KVA Power Stabilizer, Three Phase Power Stabilizer, Electric Power Stabilizer, Industrial Portable Stabilizer, 50 KVA Power Stabilizer and 100 Kva Power Stabilizer.
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Secondary Current Injection Test Sets
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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901 Three Phase 40A
Weshine Electric Manufacturing Co., Ltd
1.Windows XP operation interface, high-performance embedded industrial control computer, easy and fast operation.2.It has software self-calibration function, which greatly improves the accuracy and stability.3.The power amplifier adopts high-fidelity linear power amplifier, which not only ensures the accuracy of small current, but also ensures the stability of large current.
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Three Phase Voltage Disturbance Recorder
PQR 2020
The PQR 2020 is a Three Phase Voltage disturbance detector and recorder. This device is designed to be connected to a single phase 120V or 240V AC line or a Three Phase 208/240/480 Volt AC line and will monitor these lines for voltage disturbances.
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Power and energy calibrators
Three or single phase electric power/energy calibrator with power quality functions for calibration and testing of grid measuring appliance like power meters, power transducers or power quality analysers.
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Three-Phase Relay Tester
PTE-300-V
The equipment compromises of three independent output channels than can be selected as voltage or current. This enables the unit to be used as a complete single-phase equipment (Voltage, Current, and phase angle between them), or with channels synchronized, as a three phase voltage or three phase current generator from a single phase mains input. The unit is extremely compact and rugged. The design incorporates the latest in modern digital microprocessor technology to achieve unbeatable output characteristics in terms of power, accuracy, low distortion, and dynamic capability.
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Three Phase High Precision Reference Standard Energy Meter
SY3102
Hong Kong Songyang Industrial Ltd.
There are three ports for pulses to output. And its constants can be set automatically or manually. Types of constants can be set also: active power, reactive power, apparent power, voltage, and current.
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Regenerative Grid Simulator
61800
Chroma Systems Solutions, Inc.
Power rating: Up to 300kVA, single or three phase outputOutput Voltage: 0~330V L-N / 0~570V L-L0~400V L-N / 0~692V L-L opt. without using a transformerOutput Frequency: DC, 30Hz~100HzMaximum power delivered down to 200VAC L-NFull 4 quadrant, fully regenerative up to 100% of output current ratingSpecifically designed for PV inverter, Smart Grid and EV related test applicationsProgrammable slew rate settings for voltage and frequencyProgrammable voltage and current limitsTurn on, turn off phase angle controlLIST, PULSE, STEP mode functions for testing Power Line Disturbance (PLD) simulationVoltage dips, short interruption and voltage variation simulationHarmonics, inter-harmonics waveform synthesizerComprehensive measurement capability, including current harmonicsAnalog programmable interfacesRemote interface: GPIB, RS-232, USB and EthernetParallel output for higher power applications (three phase only)
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903 Benchtop Three Phase 40A
Weshine Electric Manufacturing Co., Ltd
1. The instrument has standard four phase voltage and three-phase current output. It can test not only various traditional relays and protection devices, but also various modern microcomputer protections, especially for transformer differential protection and standby automatic switching device. The test is more convenient and perfect.2. Classic Windows XP operation interface, friendly man-machine interface, easy and fast operation; high performance embedded industrial control computer and 8.4 inch resolution 800 × 600 TFT true color display screen, can provide rich and intuitive information, including the current working state of the equipment and various help information.
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Advanced Line Protection System
ALPS
ALPS is a multi-function digital protective relay system intended toprovide distance protection for HV or EHV transmission lines. It maybe applied on or adjacent to series compensated lines. It is availablefor single or three phase tripping applications. Typical operatingtimes are to 1 cycle.
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Frequency Tripling Test Transformer
SBF
Wuhan Sangao Electrical Test Installations Limit Co.
Specificationstripping test transformer1.easy to operate, with stable features.2.Can meet the induced voltage withstand request ofTtripping est transfromer,frequency tripling transformer, frequency tripling generator, frequency power generatorproduct features1.Easy to operate, with stable features.2. Can meet the induced voltage withstand request of the transformer, mutual inductor.product parameters1. Output voltage: three phases 380V 50HZ2. Input voltage: single phase 0~300V/0~500V(continuously adjustable) frequency:150HZ3. Output capacity: 5KVA and above.Harmonic distortion:<5%-8%4. No-load running time:≤5minutes5.duration of the measured equipment under rated voltage: 40 seconds
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Linear regulated power supply with thyristor pre-regulation
NTN
High efficiency Short circuit proof and unlimited operation with full current in short circuit condition voltage and current regulation with automatic and sharp transition; control mode indicated by LEDs Voltage and current setting with 10-turn potentiometers with precision scale; the adjusting knob can be locked 4 digit DVM for voltage and current (for table-top models) Sense terminals for the compensation of voltage drop on the load lines. The nominal voltage always refers to the output terminals Parallel and series connection possible Suitable for inductive and capacitive loads for 700 W nominal power and higher, limitation of inrush current on switching on Interlock loop to monitor the external load and internal loop as a standard for three phase units Elapsed-hour meter as a standard for three phase units
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Programmable AC and DC Power Source
AFX Series
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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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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Optical Profiler
DRK8090
Shandong Drick Instruments Co., Ltd.
This instrument uses noncontact, optical phase shift interferometry method does not damage the surface when measuring graphics can be quickly measured by a variety of three dimensional surface morphology, and analyzed to calculate the measurement results. Suitable for measuring a variety of blocks, the surface roughness of optical components; scale, dial the groove depth; magnetic (optical) disk, the head surface texture measurements; structural morphology of coating thickness and coating trough structure at the boundary of the grating; silicon surface roughness measurement and the graph structure and so on.
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Digital Line Protection System
DLPD
The DLPD provides distance protection for HV and EHV transmission lines. It may be used for single or three phase tripping applications. It includes four zones of distanceprotection. User selectable pilot schemes are provided with stepdistance backup. Ground instantaneous and time overcurrentfunctions are independently selectable to be directional ornon-directional.
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Digital Power Meters
Switchboard meters with one, two or three digital readouts for measuring AC power parameters, including ACV, ACA, frequency, watts, vars, power factor, and phase angle.
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Metra Power Clamp
1000A
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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Motor Protection Relay
239
The 239 relay is designed to fully protect three phase AC motors against conditions which can cause damage. In addition to motor protection, therelay has features that can protect associated mechanical equipment, give an alarm before damage results from a process malfunction, diagnose problemsafter a fault and allow verification of correct relay operation during routine maintenance.
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Modules - Modules, Bridge
Vishay’s bridge modules feature voltage ratings from 50 V to 1600 V in single-phase and three phase configurations and in a wide range of package options.
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Three-Phase Relay Tester
PTE-50-CET
The equipment comprises of three independent output channels that can be selected as current or voltage. This enables the unit to be used as a complete single-phase equipment (voltage, current, and phase angle between them) or, with channels synchronised, as a three phase current or three phase voltage generator from a single phase mains input.
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RF Hybrids
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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Frequency Synthesiser
RA062-F2
The RA062-F2 is a multiple LO module used to generate three pairs of LO signals, each pair being phase matched in order to provide the capability to drive two phase and amplitude matched, high sensitivity narrowband receivers such as might be required for an EW receiver system with DF functionality.The Stepped Frequency Synthesiser is based upon Direct Frequency Synthesis, DFS, whereby the 1GHz input reference signal is multiplied, filtered and mixed to generate a given number of isolated and filtered single tone CW signals from the 1GHz comb. A finely tuned signal is then generated using a multi-way switch to select between the 1GHz spaced CW tones and mixed with fine resolution signals generated using a custom DDS/VCO PLL network. In this way finely tuned signals can be generated between 7.5GHz and 23GHz.
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Three Phase Tester
4200
Peaceful Thriving Enterprise Co Ltd
*Fast and accurate measurement.*Portable and compact design, easy to carry.*Efficient, effective, reliable, easy and safe to use.*Two function in one unit. Including open phase and phase sequence.*This is idea for installing conveyor lines, pump systems and interconnected drivers.*Indicate phase orientation (clockwise or counter-clockwise) and whether each of three phases is live.
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Three-Phase Transformer Winding Resistance Meters
TWA Advanced Series
TWA Advanced series is the latest DV Power solution for three-phase transformer winding resistance measurement and tap changer analysis. They are capable of testing six transformer windings with a single cable connection, as well as three-phase automatic transformer demagnetization. It has the option of the automated test mode, where the instrument operates the tap changer without operator input (minimizing the risk of human error) and records winding resistance results based on pre-selected stabilization criteria.The unique DVtest method of tap changer analysis 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, together with the measurement of tap changer motor current which detects 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 simultaneously on three phases. It can also be performed together with the winding resistance test in all tap positions.A unique advantage of TWA Advanced instruments 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 speed up the testing– for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.TWA500 is equipped with a large 10.1” graphical touch-screen display, while TWA400 has a 7” graphical touch-screen display. Besides making the interface much more user-friendly compared to older winding ohmmeters, it also enables certain test options that were previously available only with DV-Win software. The most important among them are DVtest, tap changer motor current measurement, “Heat Run” test, test templates, and automatic test mode.
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Transformer Ratio Meters
TRM-200
Three phase lead switching network • Excitation current meter Accessories: Range Extender 1:5.
