Category: Transformer Test Equipment

Transformer Test Equipment

Transformer test equipment has evolved over the years & includes many devices that do various measurements. From winding resistance and turns ratio testers, to Tan Delta & impulse testers.

  • 15kV Insulation Resistance Meter | MIC15k1

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    Bluetooth labelIP67 LabelIP40 Label

    15kV Insulation Resistance Meter - Overview

    The MIC-15k1 meter is designed to measure the insulation resistance of power objects up to 15kV, i.e. single and multicore cables, transformers, motors and generators, capacitors, switches, and other devices installed in power stations. It is especially recommended for measurements in areas with very high electromagnetic disturbances, e.g. electrical substations with 1200 kV AC and 500 kV DC. Thanks to the 15 kV measuring voltage (in accordance with ANSI / NETA ATS-2009 TABLES 100.1) the meter can be used for measuring objects with a nominal voltage above 34.5 kV.

    15kV Insulation Resistance Meter - Features

    • Diagnostics of insulation systems based on standard measurements of IR, DAR, PI, SV, RT, and DD, widened with the partial discharge (PD) indicator for each of these measurements
    • Testing the electrical durability of tested object - breakdown voltage indication
    • High resistance to electromagnetic interferences - uninterrupted work in power stations & close to high voltage transmission lines up to 1200 kV AC & 500 kV DC
    • Smooth voltage rise in time function (RT - Ramp Test) - state the partial discharges in the facility and carry out a partial location of their occurrence
    • Efficient converter with a power of ~150 W enables insulation burnout, allowing for pinpointing the location of cables and wires short circuit using one of the following:
      • visual method (if power cables are visible along the entire length)
      • reflectometric methods, seismic-acoustic waves detector, or with A-frame to indicate the direction of the fault (the conductor must be buried in the ground with earth direct contact)
    • Compatible with external software
  • Dielectric Oil Breakdown Voltage Flash Point Tester PORTATEST A-2

    Dielectric Oil Breakdown Voltage Flash Point Tester | PORTATEST A-2

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    Oil Dielectric Breakdown Voltage Tester - Overview

    The PORTATEST A-2 Oil tester is a fully automatic tester for the determination of the dielectric breakdown voltage of the insulating liquid. Otherwise known as a flashpoint tester. It has been designed for laboratory use as well as field use for servicing and commissioning. The PORTATEST A-2 is very comfortable and easy to use. The requested testing standard may be selected via the menu. The corresponding electrode type as well as the electrode spacing will be displayed for confirmation before starting the test. After placing the test vessel with the oil sample into the test chamber, the protection lid needs to be closed. For maximum operator security, the protection lid is equipped with a security interlock key switching off the HV when opened during testing. When starting the test, sample temperature as well as a customer-specific sample number may be entered and will then be integrated into the test report printout. The testing sequence according to the selected testing standard is performed fully automatically.

    Oil dielectric breakdown voltage tester - Features

    • Fully automatic Oil tester for laboratory and field use during service and commissioning
    • Testing voltage up to 100 kV
    • Pre-Programmed for common national and international testing standards
    • Up to ten free programmable user testing sequences
    • Short switch-off time <1ms avoiding carbonization of the sample
    • Indication of individual breakdown values, average value, and standard deviation
    • Graphic-Display with backlight
    • Clear operator guiding via four soft keys F1 - F4
    • Input dialogue for sample temperature and sample number if required
    • Multi-language menu, language selected via the Setup menu
    • PC-data storage via serial interface RS232
    • Glass test vessel with a lid and magnetic stirrer
    • Different electrodes available (mushroom, sphere, or disc)
    • Electrode spacing adjustable
    • Integrated printer
    • Rugged aluminium housing with shielded test chamber
  • Winding Resistance and Turns Ratio Meter | MRC7300A

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    Winding Resistance & Turns Ratio Meter - Overview

    This instrument can precisely and safely determine winding resistances, transformation ratios, and phase angles of distribution transformers up to 100MVA and more. Further, it is possible to automatically move the tap charger of the H.V. winding to the next tap and perform cool-down measurements in temperature rise tests to calculate the resistance in the case of a load disconnection. The Winding Resistance & Turns Ratio Meter MRC7300A can be used by transformer manufacturers, electricity supply companies, and repair companies which carry out on-site measurements under unfavourable conditions. Resistance values ranging from 50 µΩ to 500 µΩ can easily be measured and logged with the internal measuring current of a maximum of 15 A up to a power of Approx. 100 MVA and more. To allow a comparison of the measured values to previous measurements, a conversion of the temperature of the test object is provided to compare measurements of a detached transformer carried out in winter and measurements carried out in other seasons. The measuring range is between 0.9:1 and 2500:1 in the case of the transformation ratio; the resolution of the angle measurement is 0.1 degrees. The logging of all measured values is performed by a separate printer, computer, or via the internal memory. The magnetic loading of the transformer is performed quickly to a relatively high rating voltage (50V). The unloading of the core is very safe, as the energy is dissipated in the MRC7300A by a ballast resistor and varistors except for a negligible rest.

    Winding Resistance and Turns Ratio Meter- Features

    • Automatic measurement without any manual interaction
    • Resistance measurement with high accuracy and up to 15 A current
    • Ratio measurement including phase angle and magnetizing current
    • Dual measuring method for faster measurements
    • Automatic vector group detection
    • Tap changer control measures all transformers tap automatically
    • Heat-up measurement including an algorithm for resistance at t=0
    • Temperature measurement and compensation to 20 °C for Cu or AI
    • USB port to get full external control over the instrument
    • Thermo printer

    Datasheet

  • Battery Operated Transformer Ratio Meter PWR1-3B

    Battery Operated Transformer Ratio Meter | PWR1-3B

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    Battery Operated Transformer Ratio Meter - Overview

    The Battery-Operated Transformer Ratio Meter PWR1-3B is a battery-powered instrument that can also be driven by normal line voltage. It is designed to measure 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 are three-phase. Due to the bad quality of industrial lines (phase jitter and shifting, voltage differences between the three phases) all measurements normally are done in single-phase, even on three-phase ratiometers. The design of the PWR1-3B contains an internal sinus power oscillator which delivers the necessary exciting voltage with very low distortion and stable voltage not found in industrial lines. This allows for very stable and precise single and three-phase measurements. The Battery-Operated Transformer Ratio Meter uses a large LCD display with a backlight to present the values of ratio and phase difference of “H.V. Winding” to “L.V. Winding”, and the excitation voltage and the magnetizing current of the high voltage winding. Additionally, the instrument performs self-calibration and has different warning messages before each measurement in case of reversed connections and other failures.

    Battery Operated Transformer Ratio Meter - Features

    • Ratio range from 8 to 2,500
    • Fully automated measurement
    • Measuring voltage 10 V / 100 V selectable
    • The display shows:
      • Ratio
      • Phase-angle
      • Excitation voltage
      • Magnetizing current
    • Easy to read large LC display for all three-phases with backlight
    • Built-in printer (optional)
    • A robust mobile case for field use

    Datasheet

  • Three Phase Transformer Measuring Bridge | MLS 7100

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    Three-Phase Transformer Measuring Bridge - Overview

    The MLS 7100 was particularly designed to simplify the determination of transformer core and copper losses, which is an ideal choice when working on site. The measuring bridge features open-circuit as well as short-circuit measuring. Many transformers can be directly connected to the MLS 7100 without needing further transducers. Core losses are an important transformer quantity in electrical efficiency, operating expenses, and the overall transformer value.

    Steel losses are typically determined using open-circuit measurement, as a relatively small magnetising current is flowing. Using this technique, the copper losses are minimized due to the square correlation of power and current. Copper losses are determined using short circuit measurement, as the magnetising modulation of the steel core should be minimized. In addition, the short circuit voltage is determined this way, which is also an important quantity.

    Three Phase Transformer Measuring Bridge - Features

    • Open circuit measurements
    • Short circuit measurements
    • Free selectable voltage and current dividers
    • 1000 kV with transducer
    • 1000 kA with transducer
    • 550 V (chained) 6 A directly connectable
    • Measures and displays:
      • Voltages
      • Currents
      • Power
      • Short Circuit Values
      • Frequency
    • Centronics printer port
    • RS232C port for external control

    Datasheet

  • Three-Phase Transformer Turns Ratio Tester PWR3A

    Three-Phase Transformer Turns Ratio Tester | PWR3A

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    Three-Phase Transformer Turns Ratio Tester - Overview

    The great advantage of the Three-Phase Transformer Tester PWR3A is its simple set-up. You simply type in the vector group with the keys to set up, connect the transformer to the device, and release the measurement. All three phases are measured consecutively. All connecting and short-circuited procedures at the primary and secondary voltage sides are performed automatically before each measurement. It is also possible to measure just one phase. An adjustable set value allows an error or deviation of the measured transformation ratio to be displayed. Automatic control of the tap changer is provided. All phases and taps are measured consecutively, and the results are stored inside the instrument and transferred to a PC. The transformer-specific data can be easily programmed via a connected PC but it is also possible via the internal keyboard. The  PWR3A is connected to the H.V. and L.V. sides via four connections each. It also powers the test object at a selected voltage, supplied by an internal isolating transformer. An external excitation using different voltages and frequencies is also possible.

    Three-Phase Transformer Turns Ratio Tester - Features

    • Ratio range from 0.75 to 20,000 (higher ratios with CVT-Ext.)
    • Fully automated measurement
    • Features market unique Vector Group Detection
    • Measuring voltage from 8 V to 230 V
    • Measuring voltage up to 5 kV by CVT-Extension: PWR3A-CVT
    • Using 3-phase voltage for phase angles other than 0°/180°
    • Easy to handle tap changer automatic
    • Internal memory stores all dates (Reading with PWR3A-XFER)
    • LC display (256 x 128 pixel) with backlight
    • Easy input of vector group and measuring conditions
    • USB/RS232C port to get full instrument control
    • Centronics printer port or built in printer (optional)
    • Robust mobile case for field use
    • Factory Certificate

    Datasheet

  • Winding Resistance Transformer and Motor Meter MR8050

    Winding Resistance Transformer and Motor Meter | MR 8050

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    Winding Resistance Transformer and Motor Meter - Overview

    The MR8050 can measure highly inductive windings of transformers, motors, and reactors with a range of 100µΩ with 0.01µΩ resolution up to 6kΩ. The performance of the measured objects can be up to 800MVA or even more. The magnetic loading of a transformer is performed quickly using a high loading voltage (60V), this is important for time-critical measurements (cooling curves).  The unloading of the transformer's core is fast and safe, as the energy is dissipated in the MR8050. The temperature of the measured objects can be pre-set or measured using a PT100 temperature sensor and the resistance is calculated for 20°C using the temperature coefficient for copper or aluminum heat-loss measurements. The resistance at t=0 (disconnection of load) is shown as a result of the internal regression algorithm. Two windings (mostly HV and LV) can be measured simultaneously in the DUAL measuring method. The MR 8050 also features automatic tap-changer control for measuring different taps without interrupting the measuring current.

    Winding Resistance Transformer and Motor Meter - Features

    • 2 channels for DUAL measurements
    • Measuring time short due to very fast uploading
    • Discharge time 1/10 of uploading time
    • Heat - loss measurements with regression algorithm
    • LCD-Display with 240 x 128 pixels with backlight
    • USB standard and RS232C 9600 baud
    • PT100 connector for PT100 temperature probe
    • Tap changer connector for automatic tap control
    • Warning system connector for a separate warning light
    • Internal test storage for up to 1000 measurements
    • Inputs full protected against static and transient voltages
    • Wide current ranges from 50mA to 60A

    Datasheet

  • Mega Ohm Meter | MIC-10

    R6,712.00

    Safety Rating Cat IV at 600V label Safety Rating Cat III at 1000V labelIngress protection IP67 label

    Mega Ohm Meter - Overview

    The MIC-10 meter is designed to perform electrical tests, which establish the safety of insulation in systems. This is a very handy digital multimeter tool,  measuring insulation resistance up to 10GOhms with up to 1000V measuring in accordance with IEC61557-2.

    Mega Ohm Meter - Features

    • Continuous indication of insulation resistance or leakage current
    • Select test voltages of: 50, 100, 250, 500, 1000 V
    • Automatic discharge of capacitance of tested object after the insulation resistance measurement
    • Acoustic signalling of five-second periods to facilitate obtaining time characteristics
    • Indication of actual test voltage during the measurement
    • Protection against measuring live objects
    • Three-lead measurement
    • Continuity measurement of protective and equipotential conductors according to EN 61557 - 4 with  >200 mA current
    • Low-voltage circuit continuity and resistance measurement
    • Circuit resistance measurement (<1999 ) with the <15 mA current
    • Sound signal if circuit resistance is below 30Ω
    • Capacitance measurement during the RISO measurement
    • Measurement of alternating and direct voltages in the 0...600 V range
    • Power supply: 4 AA disposable or rechargeable batteries, monitoring of power supply voltage
    • Meter conforms to EN 61557
  • 10kV Insulation Resistance meter up to 40 Tera-Ohm | MIC10k1

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    IEC 61557 label Safety Cat IV at 600V label Safety Cat III at 1000V label Bluetooth Enabled label Ingress protection IP40 label

     

    10kV Insulation Resistance meter - Overview

    This insulation resistance meter has a digital filter function for measurements in a high-noise environment. Continuity measurement of protective connections and equipotential bonding in accordance with EN 61557-4 with current > 200 mA.  Adjustable limits for measured resistance RISO and RCONT. Measurement of leakage current during insulation resistance testing. DC and AC voltage measurement in the range of  0...750 V. Drawing graphs on the display during measurement. Innovative memory with the option to describe measurement points, facilities, and names of customers. Can be operated with a mini Bluetooth keyboard (optional). Stable measurements in noisy environments such as 765 kV substations. Graphic LCD 5,6'’ backlit display. Keyboard backlit. Power supply from battery packs. Built-in fast charger. The instruments meet the requirements of the EN 61557 standard.

    10kV Insulation Resistance meter - Features

    • clear visible display
    • measurement voltage in the range of: 50…10000 V (50...1000 V at 10 V and 1...10 kV at 25 V)
    • continuous indication of measured insulation resistance or leakage current
    • automatic discharge of measured object capacitance voltage after the end of insulation resistance measurement
    • acoustic signalling of 5 seconds intervals to facilitate capturing time characteristics
    • adjustable measuring time to 99'59'’
    • metered T1, T2 and T3 test times for measuring one or two absorption coefficients from the range of 1…600 s
    • polarization index (PI), absorption coefficients Ab1, Ab2 and dielectric absorption ratio (DAR) measurement
    • indication of actual test voltage during measurement
    • 1.2 mA, 3 mA and 5 mA test current
    • insulation resistance measurement using two- or three-wire method
    • measurements with test leads up to 20 m
    • protection against measuring live objects
    • automatic measurement of multiple core cables with the additional AutoISO-5000 adapter (for MIC-10k1 max. voltage 5 kV)
    • measurement of capacitance during the measurement of RISO
    • measurement of temperature (with additional probe - WASONT1)
    • step voltage insulation resistance measurement (SV)
    • Dielectric Discharge calculation (DD)
    • location of damage (burnout)

    https://www.youtube.com/watch?v=ibX7f55ngzc

     

  • Cropico DO7 Micro-Ohmmeter

    Cropico DO7 Micro-Ohmmeter

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    DO7 Micro-Ohmmeter - Overview

    The DO7 digital micro ohmmeter is a practical instrument for low resistance measurement, ideal for utility use in the workshop, field or test facilities. It is of rugged construction, contained in a sealed ABS plastic case with lid and carrying handle. The DO7 digital micro ohmmeter has many advanced features. Rechargeable batteries mean real portability with more than 1 hour of continuous operation on the lowest ranges(10A), and 20 hours on all others. The internal charger will boost the charge to 90% of full charge, switching automatically to a trickle maintenance charge. Warning LEDs illuminate when an open circuit lead condition is detected.

    DO7 Micro-Ohmmeter - Features

    • True 4 terminal measurement eliminates lead resistance errors
    • 10A measuring current
    • Rechargeable batteries with built-in charger
    • Measuring ranges 600µΩ to 60Ω
    • Resolution 0.1µΩ on 600µΩ range
    •  0.8” LED display daylight viewable
    • Auto average of forward and reverse measurement
    • Remote start socket
    • All solid state design
    • Wide range of leads and accessories available
    • RS232 printer output
    • Protection up to 415Vrms at the measuring terminals,
    • Digital calibration and long scale length
    • 6,000 count

    https://www.youtube.com/watch?v=12vpdn6h-XM

     

  • DO7 Plus Micro Ohmmeter

    DO7 Plus Micro Ohmmeter

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    Micro Ohmmeter - DO7 plus - Overview

    The DO7Plus is a 10A micro ohmmeter, suitable for applications within aerospace, utilities, cable or machine manufacturers or where a cooling curve is required to plot peak resistance. Sealed in an IP67 case, it is ruggedly constructed to ensure durability. This micro ohmmeter has a display length of 60,000 counts and auto averaging of forward and reverse measurement removes thermal emf differences. The DO7Plus micro ohmmeter has built in rechargeable batteries which will provide up to 1 hour of continuous use at 10A, and up to 20 hours at all other ranges. The data log memory using FRAM technology offers unlimited read/write cycles and over 10 years of data retention, without relying on internal batteries.

    DO7 Plus Micro Ohmmeter - Features

    • Backlit LCD graphic panel with programmable timer for battery conservation
    • Qwerty Keyboard
    • Temperature compensation via PT100
    • Coefficients for Copper and Aluminum
    • Display length of 60,000 counts
    • Auto Averaging with a forward reverse measurement (removes thermal emf diff)
    • Log Memory can be plotted to calculate peak resistance value at t=0
    • Memory 1000 time stamped readings
    • Software included to view data via download with USB, RS232
    • Ruggedly constructed case IP 67 when lid is closed a d IP53 when lid is open.
    • On-screen, real-time graphical plotting cooling curve facilities with peak resistance value calculator
    • Reading rate of 2 readings per second
    • Measuring ranges from 6mΩ - 6kΩ
    • Resolution 100nΩ on 6mΩ range
    • Single pulse measurement for fast resistance tests
    • Continuous measurement current for inductive tests
    • Full test lead continuity testing and diagnostic display
    • Multilingual - display available in English, French, German, Spanish or Italian

    https://www.youtube.com/watch?v=OqDCdP8Jodo

     

  • Insulation Resistance Meter 5kV MIC-5050

    Insulation Resistance Meter 5kV | MIC-5050

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    IEC 61557 label Safety Cat IV at 600V label Safety Cat III at 1000V label Bluetooth Enabled label Ingress protection IP40 label

    Insulation Resistance Meter 5kV - Overview

    This insulation resistance meter has a digital filter function for measurements in high-noise environments.  Continuity measurement of protective connections and equipotential bonding in accordance with EN 61557-4 with current > 200 mA.  Adjustable limits for measured resistance RISO and RCONT. Measurement of leakage current during insulation resistance testing. DC and AC voltage measurement in the range of  0...750 V. Graphs on the display during measurement. Innovative memory with the option to describe: measurement points, facilities, and names of customers. Bluetooth keyboard (optional). Graphic backlit LCD 5,6'’. Keyboard backlit. Power supply from a main power line or battery packs. Built-in fast charger. The instruments meet the requirements of the EN 61557 standard.

    Insulation Resistance Meter 5kV -Features

    • measurement voltage any in the range of 50...5000 V (50...1000 V at 10 V and 1...5 kV at 25 V)
    • continuous indication of measured insulation resistance or leakage current
    • automatic discharge of measured object capacitance voltage after the end of insulation resistance measurement
    • acoustic signalling of 5 seconds intervals to facilitate capturing time characteristics
    • adjustable measuring time to 99'59'’
    • metered T1, T2 and T3 test times for measuring one or two absorption coefficients from the range of 1…600 s
    • polarization index (PI), absorption coefficients Ab1, Ab2 and dielectric absorption ratio (DAR) measurement
    • indication of actual test voltage during measurement
    • 1.2 mA, 3 mA and 5 mA test current
    • insulation resistance measurement using two- or three-wire method
    • measurements with test leads up to 20 m
    • protection against measuring live objects
    • automatic measurement of multiple core cables with the additional AutoISO-5000 adapter
    • measurement of capacitance during the measurement of RISO
    • measurement of temperature (with additional probe - WASONT1)
    • step voltage insulation resistance measurement (SV)
    • Dielectric Discharge calculation (DD)
    • location of damage (burnout)

    https://www.youtube.com/watch?v=DyOH7K4Yoqg

     

  • MIC-2501 Insulation Resistance Tester/Meter

    MIC-2501 Insulation Resistance Tester/Meter

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    MIC-2501 Insulation Resistance Tester/Meter - Overview

    A very handy tool for measuring Insulation resistance with up to 2500V.  It can measure up to 1TOhms in accordance with IEC61557-2. Comes with a convenient carry case which has straps to free up your hands during operations.

    MIC-2501 Insulation Resistance Tester/Meter - Features

    • Selectable voltage in the 100…2500 V range with 100 V step
    • Continuous indication of insulation resistance or leakage current
    • Automatic discharge of capacitance of tested object after the insulation resistance measurement
    • Acoustic signalling of five-second periods to facilitate obtaining time characteristics
    • Measured test times T1, T2 i T3 to measure one or two absorption coefficients in 15, 60 and 600 s
    • Indication of actual test voltage during the measurement
    • Protection against measuring live objects
    • Two and three-lead measurement methods
    • Continuity measurement of protective and equipotential conductors according to EN 61557-4
    • Leakage current measurement
    • Alternating and direct voltages in the 0...750 V range
    • Built-in rechargeable battery pack
    • The instruments meet the requirements of the EN 61557 standard
    • Charge from car lighter (12 V) socket (additional accessories)

    https://www.youtube.com/watch?v=ZKKcoVvN-B8

     

  • SFRA Sweep Frequency Response Analyzer SFRA45

    SFRA Sweep Frequency Response Analyzer | SFRA45

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    SFRA Sweep Frequency Response Analyzer - Overview

    This Sweep Frequency Response Analyzer with a bandwidth of 5Hz to 45MHz offers a fully portable solution which fully complies with IEC60076-18 – Power Transformers Part 18 – Measurement of frequency response. Featuring a built-in colour LCD screen and is battery powered. The tablet style instrument has the ability to perform most the common sweep frequency response analysis technique “Fingerprint Comparison” as well as all other comparison techniques, with or without PC Software. The dedicated software available (SFRAComm) also enables the user to create databases from which historical transformer sweeps can be recalled and compared to current sweeps for analysis.

    There are Four occasions when SFRA is performed

    1. Upon factory quality checking
    2. Before a short circuit test
    3. Before and After transportation
    4. Ongoing scheduled maintenance

    SFRA Sweep Frequency Response Analyzer - Features  

    • Full Colour LCD VGA Display view comparison on the spot
    • Frequency range 5Hz to 45MHz
    • Gain Accuracy 0.02dB
    • Phase Accuracy 0.05°
    • RS232, LAN and USB
    • PC Software package included
    • 2Hr Battery Life
    • Leading Phase Accuracy
    • Truly Portable Measurements
    • LCR Mode
    • Save Data to external USB
    •  50Ohm or High Impedance Input
    • Scope Function
    • Save Data to Database for comparison
    • Supplied with all accessories and carry case