Three Phase
Three voltage waveforms at 120°,1/3 of a cycle offset in time.
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LV Iron Core Line & Load Reactors
Line and load reactors are generally serial-connected to the input and/or output terminals of three phase equipment such as motor speed controllers, inverters and UPS systems. These equipment make use of semiconductor switches such as IGBTs, thyristors, and diodes and therefore create harmonic distortion and high switching over-voltages (dv/dt). Use of such equipment has been becoming more widespread as the technology advances. However, the negative effects of these equipment should not be overlooked.
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Portable Three-Phase Meter Site Analyzer
RW-30X / RW-31X
RADIAN RW-30/31X Meter Site Analyzers deliver comprehensive three-phase field testing and site analysis utilizing the Radian Research RX Xytronic series reference standard as its measurement engine. The RW-30/31X provides for testing meters with integrated, precision, true three-phase voltage and current sources or using customer’s load. Choose the RW-30/31X NS (no source) model to test using customer’s load only.
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Advanced Three Phase Automatic Relay Test Sets
MP 3000 Series
Advanced three phase automatic relay test set. PC control through user friendly MPWIN Relay Test Software. High accuracy and high power over wide range. Suitable for IEC61850 GOOSE simulation, subscription and sampled value publishing. CE, FCC.
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Motor Protection Meter
MPM
The MPM provides additional metering capabilities such as three phase voltage, pf, real power, reactive power, Wh, and frequency for the 269 or 269 Plus Motor Management Relay.
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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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Phase Sequence Meters
Phase sequence meter is used for detecting the sequence of the supply in three-phase electric circuits. Since the direction of rotation of three phase electric motors can be changed by changing the phase sequence of supply. And also the correct operation of measuring instruments like 3 phase energy meter and automatic control of devices also depend on the phase sequence. Different types of phase sequence testers are available in today’s market like contact or non contact, static or rotating, etc., in a wide range of voltage or power ratings.
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AC to DC Unregulated Power Supply
CEHCO is a specialist in AC to DC Unregulated Power Supply. We can offer the followings:Input power can be single phase (1 PH) or three phase (3 PH)DC output voltage up to 1000 VDC maxDC output current up to 1500 Amps max
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Meter Test Board
MTB-3200
Run standard meter accuracy tests and complex meter accuracy tests under widely varying loading conditions with TESCO’s Meter Test Board (MTB-3200). TESCO’s Three Phase Meter Test Board (MTB-3200) is an innovative meter accuracy test system offering unsurpassed functionality and ease of use. All of the features needed to test meters today and tomorrow are standard.
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Three Phase Power Calibrators And Tester Of Power Engineering Devices
C300B
Calmet Smart Calibration Devices
Three phase, class 0.02 and 0.05 power quality calibrator up to 120A (360A) and 560VAC with programmable power quality parameters. It makes possible to make automatic test of electricity meters, measurement transducers, current transformers and protection relays.
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Transformer Turns Ratio Meter
TTRM 302
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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Variable Frequency Drives (VFD)
High performance, cost effective VFDs, ideal for both machines & process control.Unitronics VFDs offer options for both single and three phase VFDs from 0.4 kW and up to 500 kW.Unitronics VFDs can be used as a stand-alone product, or as part of a complete All-in-One package with our controllers.
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Universal Clamp Tester
M-200
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.*33mmφCT window and ultra compact size.*Data-hold function. Especially useful when working in dark or hard to get areas.
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Phasor Measurement Unit
Qualitrol PMU-9/18/36
A scalable and modular substation hardened Phasor Measurement Units for connection to up to ten three phase circuits to calculate and stream phasors.
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Three-Phase Relay Test Equipment
AK-30
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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Power RC Snubbers
Single phase and Three phase availableSuitable for AC and DC voltage applicationResistance and rate power of Resistor : 1 - 50W ( can be customized to 100W or above )Voltage: 63Vac, 125Vac, 280Vac, 480Vac, 500Vac, 600VacOperating temperature : -25~+85C / -40~+105CTesting Voltage : : 1.5 x Un 10sec ( can be customized )Varistor and Diode options available. Different applications can have very different electrical and mechanical profile requirements.Please feel free to send your application details for a suggestion and quotation.
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Multifunctional Meter
CPM-10
CPM-10 Multifunction Power meter measure single phase 2 wire ,single phase 3 wire, three phase 3 Wire and 3 Phase 4 wire systems with high accuracy measurement for parameters such as voltage, current ,active power, reactive power, apparent power, power factor ,frequency, effective energy (V,A,W,Watt-Hr,Var,Var-Hr,VA,PF,Hz), having LED display and standard communication RTU Modbus RS485..Optional functions 1 set relay output,1 analogue,1 RS485 (ModbusRTU Mode) or 1 pulse output. Most suitable for power management,remote input /output, alarm and remote signal control uses needs.Case depth 120mm only, easy panel mounting installation
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DC Resistance Tester
GDZRS-20A
GDZRS series Winding DC resistance tester is optimal designed for measuring three phase winding DC resistance of big capacity transformer. It can test three phase winding DC resistances at the same time
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Transformer Turns Ratio Meter
TTRM 301
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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Power Quality Meter
PQMII
The PQM II is an ideal choice when continuous monitoring of a three phase system is required. It provides metering for current, voltage, real and reactive power, energy use, cost of power, power factor and frequency. Programmable setpoints and 4 assignable output relays allow control functions to be added for specific applications.
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Compact Three-Phase Ppower Capacitor
MFB
Lifasa - International Capacitors, SA
These capacitors are especially suitable for the compensation of inductive loads and for the construction of automatic batteries.
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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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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 AC Power Source 320 Vrms, 6 KVA, 5000 Hz
AC6906H
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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Three-Phase Testing
CMC 310
The CMC 310 is specifically designed for basic three-phase testing of protection and measurement devices. It is operated by the CMControl P software which runs on the CMControl P unit, a Windows PC or on an Android tablet. Its intuitive user interface and the test tools included are optimized for quick manual testing in the field.
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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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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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Transformer Ratio Meters
Three Phase Transformer Ratio Meter Standard Series
TRT is based on state-of-the-art technology, using the most advanced technique available today. The test equipment can be used to test both single-phase and three-phase transformers, both with and without tap changer in accordance with the requirements of IEC 60076-1.
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Variable Transformer DC Power Supplies
Variable DC power supplies are AC to DC power supplies with a variable DC output. The output can be varied with a Variable Transformer (also known as variac). The Variable Transformer can be adjusted manually or with a motorized control. 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 single phase.
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Microcomputer Three-phase Relay Test Set
Weshine Electric Manufacturing Co., Ltd
Given the diverse functional requirements of the grid’s protection system, testing capabilities require a new level of sophisticated test hardware and software with which to analyse the entire protection system’s (or individual protection component’s) operation in "real life" situations.
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AC Source
AFC
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.
