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- TEAM SOLUTIONS, INC.
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Current Loop 20 MA Constant Current SI-module With Optical Isolation
MXTTY
Current loop 20 mA constant current (active, passive) SI-module with optical isolation.
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Single Phase DC Injection Set Kit
PDC120A/PDC200A
PDC120A/PDC200A Single Phase DC current injection set kit is portable test set which could generate DC current for the various testings in railway transportation, HVDC converting stations, etc.
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Electronic Primary Injection Test Set
eKAM
eKAM is the new fully automatic electronic primary injection test equipment. e KAM test system includes two portable units: one control unit with a large graphical display, that adjusts the output, and one current unit (up to 2000, 3000, 5000A). It can also perform Step and Touch tests and ground resistance tests.
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Mini Digital Multimeter
HH2103
Basic Accuracy 1.0%. LCD display 2000 count, 12.8mm figure height. Manual Ranging at your choice (19 Range). Higher Voltage test up to AC 750V and DC 1000V. Higher Current test up to 10A. Resistance test up to 2000KΩ. Diode test. Square Wave Signal Injection
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Primary Current Injection Testers
Primary Current Injection Tester is designed for testing protective relay and circuit breakers and also testing the turns ratio of current transformers at high variable currents. A test current is injected into the primary side of a system to determine how the system behaves at particular levels of current. This test makes it possible to determine whether the relay will trip and how long the current needs to flow before the trip is initiated.
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Primary Current Injection Test Set
T 3000
T 3000 is a primary current injection testing system designed to perform primary tests requested in substations commissioning. It allows to perform different tests and measurements on current transformers, voltage transformers, power transformers, protection relays, energy meters and transducers
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Transformer Winding Resistance Meters
TWA Standard Series
The TWA standard series instruments are designed to measure the resistance of six coils and simultaneously analyze the three-phase tap changer on load of the primary and secondary transformer coils (provided by model TWA40). This is done in a single cable configuration, with test currents up to 40A. Each transformer configuration has a special measurement algorithm that is optimized for rapid stabilization of test results. The TWA instruments generate a true DC current without ripple. Both current injection and magnetic circuit energy discharge are automatically regulated.
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Single-Phase Transformer Winding Resistance Meters
RMO-TW Series
RMO-TW series is perfect for winding resistance measurements of inductive objects. It is ideal for testing transformer windings (power transformers, distribution, autotransformers) and for on-load tap changer verification. In addition, any RMO-TW transformer ohmmeter & tap changer analyzer can also perform transformer demagnetization.The series contains 4 models, with maximal test currents from 10 A (RMO10TW) to 50 A (RMO50TW). They are fitted in a portable and lightweight metal housing.All transformer ohmmeters from RMO-TW series generate a true DC ripple-free current with automatically regulated measurement and discharging circuit. The injection of current and discharge of energy from the test object are automatically regulated.Three independent channels enable testing of three windings in series. Consequently, this enables measurements of winding resistance in every tap position of an on-load tap changer without discharging between the tests.DV-Win software enables control and observation of the test process, as well as saving and analyzing the results on a PC. It provides a test report, arranged in a selectable form as an Excel spreadsheet, PDF, Word, or ASCII format. Additionally, DV-Win measures and calculates the OLTC transition time, the ripple and the winding resistance for each tap changing operation. The software can also perform the calculations necessary for the “Heat Run” test. Finally, a user can export all results in the form of a report.
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6000 Count Digital Multimeter
HH0308C
Double Injection Casing. High Accuracy (basic accuracy 0.3%). 6000 count Jumbo LCD display with symbolic signs. Auto Ranging High Voltage test up to 1000V DC and 750V AC. Higher Current test up to 20A AC/DC. Diode and Continuity Check. Measure Resistance up to 60MΩ. Measure Temperature up to 300c. Measure Frequency up to 600k Hz
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Pro-Level Manual Digital Multimeter
HH2205G
High Accuracy (Basic Accuracy 0.50%). 3-3/4 Jumbo LCD display 4000 count with symbolic signs. Double Injection Casing. Backlight for work in a dim area. High Voltage test up to 1000V DC and 750V AC. Higher Current test up to 10A AC/DC. Diode and Continuity check
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Contact Resistance Meter
CRM 100C
CRM 100C directly measures resistance values with DC current injection under live switchyard conditions.The CRM 100C is specially designed to reliably measure contact resistance of Circuit Breakers, Isolators, Bus Bar joints, welded joints etc., under the hostile electrostatic noise found in live EHV switchyards. It can also be used for testing cables, graphite bars etc.
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Primary Injection Test Systems
Primary current injection testing is utilised in high current/high voltage scenarios found at large electrical installations such as substations. A large current (between 100A and 20,000A depending on system specifications and test requirements) is injected directly on the primary side of the electrical system such as a circuit breaker. The objective of the test is to identify how the system operates under various levels of current load.
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Line Injector
J2120A
While the injection transformer is a very wideband adapter, it is not useful for measuring ripple rejection (PSRR) of a power supply or even an opamp. This is because the attributes that make the injection transformer perform so well also result in a transformer that is intolerant of DC current. Even very small DC currents (5mA or less) can greatly reduce the signal capacity or even totally saturate the transformer. For this reason, the Picotest line injector (J2120A) is another essential test adapter.
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Primary Test Equipment
LET-400-RD
It allows to perform with sufficient power, all the primary current injections to test the proper function and wiring of all the elements that compose the protection and measuring section in a substation.The regulation system is based on a continuously variable autotransformer (Variac) that supplies to a power transformer that delivers the high current outputs and isolate the main supply from the load. A built-in ammeter and a timer gives the information about the current value and the operation time of the relay or breaker under test.
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IPCE Action Spectrum Measurement Device
PEC-S20
●Compact design with light source and spectrometer integrated ●Optical fiber direct injection method for maskless current density calculation ● Measurement with only a sample set and measurement start button
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Protection System Tools
Megger’s comprehensive range of products for relay tests includes high current primary injection, relay phase angle, end to end line protection GPS timers and relay current amplifiers.
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ZZ Power Booster 1200V/3000V
ZZ Booster-Transmitter
ZZ Resistivity Imaging Pty. Ltd.
*3,000W output power in 2 adjustable voltage ranges ( 400V/7.5A, 1,200V/2.5A), the FlashRES booster transmitter is particular useful for surveys in high resistive areas or IP surveys.*When the FlashRES booster transmitter is connected FlashRES-UNIVERSAL, for each current injection, the system could collect 61 voltage measurement, this greatly increases the data collection speed.*Uses two standard 12V batteries connect in series as input power source*The FlashRES booster transmitter is designed for heavy duty usage, the instrument is shock, water and dust proof.*Light-weight and easily mobilised
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Primary Test Equipment
LET-2010-RD
It allows to perform with sufficient power, all the primary current injections to test the proper function and wiring of all the elements that compose the protection and measuring section in a substation.
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Relay Test Set
Cambridge Instruments & Engineering Co.
“CIE” Relay Test Set is ideal for Testing Protective relay, over current relay, earth fault relay by secondary injection method with help of digital timer.
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Three-Phase Transformer Demagnetizer
DEM60C
After a DC current test, such as winding resistance measurement, the magnetic core of a power or instrument transformer may be magnetized (remnant magnetism). It can cause various problems such as wrong diagnostics, inaccurate measurements on a transformer, inrush current at the start-up of a power transformer, or incorrect operation of protective relays due to magnetized CT cores. The best way to eliminate this source of potential problems is to use demagnetizer on the power or instrument transformer.The DEM60C is a fully automatic test instrument which performs three-phase transformer demagnetization. Transformer magnetic core demagnetization requires the application of AC current with magnitude decreasing to zero. DEM60C provides this AC current by internally changing the polarity of a controlled DC current. During the demagnetization process, the instrument supplies the current at decreasing magnitude for each step, following a proprietary algorithm. It can demagnetize single-phase and three-phase power transformers.The instrument can be connected to all three phases of a power transformer to be demagnetized, on either the primary or the secondary side. If a user selects specific vector diagrams for different types of transformers, DEM60C will run a specific demagnetization procedure for each transformer type (i.e., single phase, delta, wye/star, zig-zag.) without switching the test leads.DEM60C enables safe and efficient power transformer demagnetization. The instrument automatically regulates the injection of current and discharging energy from the inductance. During and after the operation, an intrinsically safe discharge circuit with an indicator rapidly dissipates the stored magnetic energy. The discharging circuit is independent of the power supply, which improves its reliability in case of loss of power.Test currents of up to 60 A DC enable efficient demagnetization of even the largest power transformers. Using a DV Win software, it is possible to control DEM60C externally.
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Geoelectric Power Sounder
GEPS-2000
Geoelectric Power Sounder GEPS-2000 is a device for data acquisition and interpretation of deep VES (vertical electrical sounding) as well as for 8 channel profiling (resistivity and IP sections). It can be used for measurements up to 1000 – 2000 m depth allowing both high voltage and high current injection of transmitter current according to real measuring conditions.
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Contact Resistance Meter
PCRM200S
The Motwane Manufacturing Company
The Motwane make Contact Resistance Meter (Model:PCRM200S) is a digital micro-ohmmeter, specially designed to measure extremely low resistance in micro ohm. The Instrument is based on Kelvin 4-wire connection method for measurement of low resistance.The Current injection is fixed at 100A & 200A. Test information like current injected with measured resistance & voltage drop is displayed with real time data on large LCD with backlit.This User friendly Instrument and it's accessories are housed in easy transportation case. Advanced Windows based software isprovided for data downloading, analysis and report generation. Internal memory of 199 records is provided for onsite data storage withDate & Time stamping & Recalling facility. Thermal printer is the additional feature provided to print the test results.
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Gated Integrator | Boxcar Averager
GIA100
Artifex Engineering GmbH & Co. KG
The GIA100 gated integrator employs dual monolithic switched integrators. When paired with a photodiode, the boxcar amplifier measures the energy of single optical pulses. The GIA100 design results in very low leakage error, charge injection error and pickup. The precision input stage may be configured for current or voltage inputs.
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Transformer Ratio Meters
Handheld Turns Ratio & Winding Resistance Tester TWR-H
TWR-H is a handheld, battery operated, fully automatic test set specially designed for turns ratio, phase shift, excitation current and winding resistance measurements of transformers. It can also perform demagnetization of these transformers. Transformer turns ratio is determined by applying AC voltage across high voltage winding, accurately measuring AC voltage across the corresponding unloaded transformer winding, and then displaying the ratio of these voltages. User can enter a transformer’s nameplate voltages, so that turns ratio deviation can be calculated. This feature eliminates any error otherwise caused by an operator’s manual calculation. TWR-H compares measured turns ratio with the nameplate ratio and prints out the % of error for each test. Transformer winding resistance is determined by injecting DC current through a winding, accurately measuring DC voltage across the winding, and then calculating resistance as the ratio of voltage and current. The device generates true DC ripple-free currents. Both the injection of the current and the discharge of energy from transformer magnetic circuit are automatically regulated.
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Primary Injection Test Systems
Primary current injection testing is utilised in high current/high voltage scenarios found at large electrical installations such as substations. A large current (between 100A and 20,000A depending on system specifications and test requirements) is injected directly on the primary side of the electrical system such as a circuit breaker. The objective of the test is to identify how the system operates under various levels of current load.
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Primary Test Equipment
LET-4000-RD
It allows to perform with sufficient power, all the primary current injections to test the proper function and wiring of all the elements that compose the protection and measuring section in a substation.
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Jumbo LCD Digital Multimeter
HH2102A
Basic Accuracy 1.0%. Jumbo LCD display 2000 count, 21mm figure height. Manual Ranging at your choice (19 Range). Higher Voltage test up to AC 750V and DC 1000V. Higher Current test up to 10A. Resistance test up to 20MΩ. Signal injection and Diode test
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Marine Logging System
SuperSting Marine
The SuperSting Marine continuously records and stores data from a GPS receiver. Current is injected every 3 seconds and 8 apparent resistivity values representing 8 depth levels are read for each current injection. Depth of penetration depends on length of the cable and array type. Typically you will see down to aproximately 20% of the electrode spread length.
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Current Injection
K&S Engineering and Scientific Ltd
The outputs are continuously variable from zero and are all isolated. The current outputs can be used at twice their continuous rated current on a 25% duty cycle with a maximum ON time of 5 minutes.
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20Hz Generator
Signals & Systems India Private Limited
In order to implement a 100 % stator earth fault protection based on subharmonic injection, a 20Hz voltage is injected into the generator star point. The 20-Hz generator SGEN-1001 is used in combination with the Band Pass Filter SBPF-1001 in the Stator Earth fault protection. The injection can be performed by connecting the SGEN-1001 and the SBPF-1001 to the load resistor of an earthing or neutral transformer. If an earth fault occurs in the generator star point, the 20 Hz voltage drives a current through the fault resistance. From the driving voltage and the fault current, the protective relay determines the fault resistance.
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Transforming Analog Circuit Breaker Testers
MAC-21
The MAC-21 uses proven microprocessor and A/D converter technology to provide real-time waveform analysis. This ensures accurate true-RMS readings of current pulses, even with DC offset and distortion, which are typical in primary injection testing. Intelligent threshold algorithms provide accurate trip time measurement. Integration of measurement and control functions allow advanced features such as preset on times, auto ranging, and optional printer or computer interface.
