Electrical Test & Measurement

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Electrical Installation Meter with Power Analyzer | MPI-540

Electrical Installation Meter - Overview

The MPI-540 meter is designed for checking the safety of industrial and domestic electrical installations. The user has the option to register the parameters of electrical networks located at these facilities. This allows for the measurement of the parameters for protection against electric shock using a single universal device while verifying the quality of electricity. The Auto mode allows significant automation of measurements of the meter and makes it possible to test the functioning of residual current circuit breakers, as well as in pre-programmed measuring sequences, which can be extended with their own sequences. Automatic measurement of insulation resistance of 3-, 4- and 5-wire conductors is possible by using an additional AUTO ISO-1000C adapter.

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Power Quality Analyzer | PQM3000

Power Quality Analyzer PQM3000 - Overview

The PQM3000 is a high-end power quality analyzer which is able to monitor and record the major power quality parameters. It provides accurate measurement and voltage characteristics are monitored according to Class A specifications. It can also act as an event/fault recorder, capable of storing a high number of voltage events and disturbances, frequency variations, inrush current, etc. Additional PQ data can be recorded, such as Flicker, Unbalance, Harmonics and Interharmonics, and Mains Signalling. It also provides standard power measurement data for three-phase systems. Extra voltage and current measurement channels allow additional monitoring of Neutral Potential and Earth Leakage current.

PQM3000 is available for external standard CTs with 1 or 5A output. In this way, maximum flexibility is granted even in existing plants.

The powerful recording features can capture and record all types of standard and PQ data simultaneously. This can be recorded for a long time due to the high memory capacity. In this way a complete EN 50160 analysis can be performed. Events and disturbances also provide waveform recording together with RMS values. Recordings can be transferred directly through a web interface or set as an automatic scheduled data upload to a remote server.

PQM3000 includes different communication ports so the user can access them in different ways. The Ethernet ports on the front and rear panels allow complete control on the instrument such as web access for real-time monitoring, device setup, stored data transfer, and maintenance operations. The external mobile network router gives the possibility to manage the device via a 4G network if the Ethernet communication is not available (router sold separately). The RS485 port is dedicated to the data reading of PQMGPS1, i.e. the external GPS module provided with the instrument. PQMGPS1 provides accurate time information regardless of the location of the installation in a distributed monitoring system.

Moreover, different I/O channels are provided to enhance the instrument features. A user-friendly multilingual interface is provided for the webserver which simplifies access to instrument functions.

Power Quality Analyzer PQM3000 - Features
- Rack 19” mounting
- Harmonics and inter-harmonics measurement
- Data recording for further EN 50160 analysis
- Data recorded in standard PQDIF and CSV file formats
- Embedded web server
- Communication on Ethernet and 4G networks
- Included external GPS module for accurate timing
- Internal rechargeable backup battery
- Certified according to IEC/EN 61000-4-30:2015 Ed.3
- Class A for voltage characteristics
DATASHEET

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Selective Level Meter | SLM 3505

Selective Level Meter - Overview

The Selective Level Meter SLM3505 was designed to provide a single-instrument solution for the Electric Utility System Protection Engineers and Relay/Communications Technicians responsible for the alignment and maintenance of Power Line Carrier, Audio Tone, and FSK Communications Systems. This multifunction instrument replaces all 4 existing Power Line Carrier Instruments for a fraction of the cost. All in a compact lightweight package.

Selective Level Meter SLM 3505 Features
- Frequency range 5Hz to 5MHz
- Selectable inputs up to 300 Vpk
- Low and High-level generators
- Dual-frequency SLM mode
- Impedance analyzer
- VSWR Meter
- Oscilloscope mode
- Line trap/tuner test
- Mains / 12 volt dc / internal battery operation
- Supplied complete with rugged flight case
Datasheet

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Winding Resistance Transformer and Motor Meter | MR 8050

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

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Advanced Three-Phase Winding Resistance Meters | TWA Std Series

Advanced Three-Phase Winding Resistance Meters - Overview

The TWA Standard series has LCD displays. Both models are capable of testing six transformer windings with a one-time cable connection, as well as three-phase automatic transformer demagnetisation. The stored magnetic energy is safely and automatically discharged at the end of the test. The built-in tap changer control unit enables automated test mode, where the instrument operates the tap changer without operator input and records winding resistance results based on pre-selected stabilisation criteria. Both models can output test currents from 5 mA to 30 A DC for the purpose of winding resistance measurement. TWA40D has a special test mode for checking the synchronisation of on-load tap changers with three phases simultaneously tested in parallel, in which the total test current can rise to up to 40 A DC. The unique DVtest method 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 a 0.1 ms sampling rate, simultaneously with the measurement of the tap changer motor current, which helps with the detection of motor and mechanical issues. An 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 on three phases simultaneously. It can also be performed as an additional test, simultaneously with the winding resistance test in all tap positions.

Advanced Three-Phase Winding Resistance Meters - Features
- Resistance measurement of all tap positions in all six windings performed in a single test
- True three-phase on-load tap changer (OLTC) DVtest (dynamic resistance measurement)
- Quick measurement, single-step cable setup
- Rapid automatic demagnetisation
- Fully automated test mode
- Built-in tap changer control unit
- Temperature measurement channel
https://www.youtube.com/watch?v=aUJ0BNudhI4

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Three Phase Transformer Measuring Bridge | MLS 7100

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

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Three-Phase Transformer Turns Ratio Tester | PWR3A

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

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Power Quality Analyzer PQM-702

Power Quality Analyzer - Overview

The Power Quality Analyzer PQM-702 is a high-tech device providing users with features to measure, analyze and record parameters of 50/60 Hz power networks and power quality in accordance with the European Standard EN 50160. Analyzers are fully compliant with the requirements of IEC 61000-4-30:2015, Class A.

The device is equipped with five voltage measurement inputs installed as cables terminated with banana plugs marked as L1/A, L2/B, L3/C, N and PE (ground). The voltages measured by four measurement channels are up to ±1500V (the device has two voltage sub-ranges). This range may be increased by using additional external voltage transformers. Current is measured using four inputs installed on short cables terminated with probe terminals. The terminals may be connected to the following probe types: flexible claps (marked as F-1(A), F-2(A), F-3(A)) with nominal rating up to 3000 A (differing from others only by coil diameter); clamps F-1A6, F-2A6, F-3A6 with a nominal range up to 6000 A and hard probes marked as C-4 (range up to 1000 A AC), C-5(A) (up to 1000 A AC/DC), C-6(A) (up to 10 A AC) and C-7(A) (up to 100 A AC). The values of nominal measured currents may be changed by using additional transducers – for example, using a transducer of 1000:5 ratio, the user may select C-6(A) probes to measure currents up to 1000 A

Power Quality Analyzer - Features
- Power to the analyzer is supplied from tested mains (internal power supply) and is used in all types of networks from 64 V to 760V
- Emphasis on measurements at low voltage poles, due to the ease of connection
- Independent power supply socket suited for voltage measurements for transformers and DC circuits
- Remote control and data transfer through a built-in GSM modem (GPRS)
- Anti-theft feature - SMS notification in the event of position change - built-in GPS receiver
- Real-time clock synchronized to GPS protocol
- Measurements according to EN 50160
- Voltage L1, L2, L3, N, PE
  - average, minimum, maximum and instantaneous values, range to 760 V, ability to work with voltage transformers
- Current L1, L2, L3, N (four inputs)
  - average, minimum, maximum and instantaneous values, measurement current with range to 3 kA (depends on used clamp)
  - ability to work with current transformers
- Crest factor for voltage and current
- Frequency from 40 Hz to 70 Hz
- Active, reactive, distortion, apparent power, including the type of reactive power (capacitive, inductive)
- Power recording:
  - Budeanu method
  - IEEE 1459
- Active, reactive, apparent energy
- Power factor, cosφ, tgφ
- K factor (transformer overload caused by the harmonics)
- Up to 50^th harmonics for voltage and current
- Total Harmonic Distortion (THD) for voltage and current
- Short-term (P_ST) and long-term (P_LT) flicker
- Unbalance of voltage and current
- Current events detection including waveforms recording
- Current and voltage waveforms recording after each averaging period
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Dielectric Oil Breakdown Voltage Flash Point Tester | PORTATEST A-2

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
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Handheld Turns Ratio Tester | TRT-H

Handheld Turns Ratio Tester - Overview

The TRT-H is a battery operated, handheld, fully automatic test set designed for turns ratio, excitation current and phase shift measurements of transformers. The 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. The user can enter a transformer’s nameplate voltages, so that the turns ratio deviation can be calculated. This feature eliminates any error otherwise caused by an operator’s manual calculation. It compares measured turns ratio with the nameplate ratio and prints out the % of error for each test. Applications include: Turns ratio measurement of distribution transformers; Turns ratio verification of instrument transformers; Turns ratio deviation calculation; Excitation current measurement of distribution and instrument transformers; Phase angle measurement of distribution and instrument transformers; and Polarity check of instrument transformers.

Handheld Turns Ratio Tester - Features
- Unique handheld instrument
- Extremely lightweight – only 1.4 kg / 3.1 lbs
- Measures 3 transformer parameters:
  - Turns ratio
  - Excitation current
  - Phase angle
- Single-phase test voltage up to 40 V AC
- Turns ratio accuracy up to ±0.1%
- Battery-powered
- Tests single-phase and three-phase transformers
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Power Quality Analyzer PQM-703

Power Quality Analyzer - Overview

Power Quality Analyzers PQM-703 include all features of the PQM 702 but with extra functionality: mains signalling up to 3000 Hz, Transients up to ±6000 V, and minimal transient capturing time of 650 ns. This technically advanced product allows for comprehensive measurements of the quality of electricity, analysis and recording of power network parameters for frequencies 50/60 Hz, all in accordance with the European Standard EN 50160. Analyzers are fully compliant with the requirements of IEC 61000-4-30:2015, Class A.

The device is equipped with five voltage measurement inputs installed as cables terminated with banana plugs marked as L1/A, L2/B, L3/C, N and PE (ground). The voltages measured by four measurement channels are up to ±1500V (the device has two voltage sub-ranges). This range may be increased by using additional external voltage transformers. Current is measured using four inputs installed on short cables terminated with probe terminals. The terminals may be connected to the following probe types: flexible claps (marked as F-1(A), F-2(A), F-3(A)) with nominal rating up to 3000 A (differing from others only by coil diameter); clamps F-1A6, F-2A6, F-3A6 with a nominal range up to 6000 A and hard probes marked as C-4 (range up to 1000 A AC), C-5(A) (up to 1000 A AC/DC), C-6(A) (up to 10 A AC) and C-7(A) (up to 100 A AC). The values of nominal measured currents may be changed by using additional transducers – for example, using a transducer of 1000:5 ratio, the user may select C-6(A) probes to measure currents up to 1000 A

Power Quality Analyzer - Features
- Mains signalling up to 3000 Hz
- Transients up to ±6000 V, minimal transient capturing time is 650 ns
- All parameters meet Class A acc. IEC 61000-4-30 standard
- Measurements according to EN 50160
- Voltage L1, L2, L3, N-PE
  - average, minimum, maximum and instantaneous values
  - range to 760 V
  - ability to work with voltage transformers
- Current L1, L2, L3, N (four inputs)
  - average, minimum, maximum and instantaneous values
  - measurement current with range to 3 kA (depends on used clamp)
  - ability to work with current transformers
- Crest factor for voltage and current
- Frequency from 40 Hz to 70 Hz
- Active, reactive, distortion, apparent power, including the type of reactive power (capacitive, inductive)
- Power recording:
  - Budeanu method
  - IEEE 1459
- Active, reactive, apparent energy
- Power factor, cosφ, tgφ
- K factor (transformer overload caused by the harmonics)
- Up to 50^th harmonics for voltage and current
- Total Harmonic Distortion (THD) for voltage and current
- Short-term (P_ST) and long-term (P_LT) flicker
- Unbalance of voltage and current
- Current events detection including waveforms recording
- Current and voltage waveforms recording after each averaging period
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Cable and Pipe Locator | LKZ-2000

Overview of Cable and Pipe Locator LKZ-2000

Easily locate cables and pipes with pinpoint accuracy. The complexity of large underground utility networks continually increases, therefor obtaining precise information on the location of specific buried cables and pipes has never been so important. To protect buried assets during ground excavation work and to support the mapping and surveying of these existing utilities.

Sonel LKZ-2000 system has unique flexible operating modes to help you easily decide the right mode for your location application for the site conditions. The intelligent utility locator monitors the signal interference levels in all available modes and recommends which to use for the best results. Saving you time and giving you increased confidence in your results.

Application for Sonel LKZ-2000 - the best system for most challenging conditions!

POWER INDUSTRY
Sonel LKZ-2000 is designed to easily trace power cables over long and short distances with pinpoint accuracy, especially in areas with high levels of electrical interference. When used in conjunction with the supplied Multi Clamp a trace signal can be safely applied to an electrically live cable. The A-Frame accessory can also be used to easily locate cable sheath faults.

CIVIL ENGINEERING AND CONSTRUCTION INDUSTRIES
The highly durable, weatherproof Sonel LKZ system has a flexible operating system to suit most site conditions and terrain, which is essential on complex and demanding civil engineering and construction sites.

RAIL INDUSTRY
Damaging communication cables can be very costly and time consuming to repair, causing major disruption to the rail network. Sonel LKZ system is designed to easily locate and trace cables in congested areas and with high levels of electrical interference.

TELECOM INDUSTRY
Tracing and locating large bundled cables, such as fibre optic cables, can be difficult and time-consuming. Sonel LKZ system's high-frequency modes are ideally suited for these types of cables, helping to improve your productivity and reliably locating all cable types. The A-Frame accessory can be used to easily locate cable sheath faults.

GAS & OIL INDUSTRIES
These can be the most potentially hazardous, costly or environmentally sensitive pipes to strike and therefore most important not to damage. Using the Sonel LKZ system’s range of low-frequency modes, locating and tracing these pipes is easy over long distances, maintaining maximum accuracy.

WATER INDUSTRY
Locating and tracing pipes can support the mapping and surveying of utilities. Using the Sonel LKZ system with our dual-frequency mode is the ideal solution for locating deep underground non-metallic sewerage and drainage pipes, that can’t be detected using standard locating technology.

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Leakage Current Alarm Signaler | MPU-1

Leakage Current Alarm Signaler- Overview

MPU-1 measures leakage current in AC, low and medium voltage power networks. Improve safety when working with dangerous voltage lines with continuous monitoring of leakage current. Designed to indicate network safety conditions for leakage current. The device enables you to set maximum safe levels of flowing leakage current which will activate visual and audible alarms.

Leakage Current Alarm Signaler - Features
- Constant monitoring of current flowing on earthing
- Use of single clamp or two clamps simultaneously
- Work mode LED indicator
- Visual and sound alarm
- Battery level monitoring
- No DC current measurement
- Measurement with flexible clamp (Rogowski coil)
- Measurement in 50Hz or 60 Hz frequency low and medium voltage networks
- Auto-ranging
- Ergonomic handling
- MPU-1 for operation requires F1, F-2 or F-3 clamp (additional accessories)
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Handheld Turns Ratio and Winding Resistance Meter | TWR-H Series

Handheld Turns Ratio and Winding Resistance Meter - Overview

This handheld, battery-operated, fully automatic test set is designed for turns ratio, phase shift, excitation current of transformers, and winding resistance measurement of transformers and other inductive objects. It can also perform demagnetisation of transformers, motors, and generators. 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.

Handheld Turns Ratio and Winding Resistance Meter - Features
- Unique handheld instrument on the market
- Performs 3 different tests: Turns ratio, Winding resistance, Demagnetisation
- Single-phase test voltage up to 40 V AC
- Two DC current sources: Test current up to 2 A DC for transformer HV side, Test current up to 10 A DC for transformer LV side
- Extremely lightweight – only 1.4 kg / 3.1 lbs
- Battery-powered
- Tests single-phase and three-phase transformers
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Standard Programmable Resistor SRP-10G0-10T0

Standard Programmable Resistor - Overview

The SRP-10G0-10T0 calibrator, which has a range from 10GΩ to 10TΩ, is a source of high resistance which is used as a standard in calibration and testing of analogue and digital insulation resistance meters. The selected resistance can be maintained for a long time under external direct voltage up to 10 000 V, provided that the current in the measuring circuit does not exceed 3 mA. The required resistance is set by the user using the calibrator's touch keypad or via an external PC application. The required value is set automatically thanks to the switching of a precise resistance matrix. The controlling processor calculates the required combination of resistors, ensuring adequate resistance precision.

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