• Ideal for field application because of its low weight and compact design
• High safety due to internal discharge facility
• High flexibility with the external battery
• Over-current tripping

The high voltage test unit T99/1 is a portable and powerful test device able to generate a DC voltage of up to 40 kV. The T 99/1 is used for testing of cables, cable accessories, plant and installations. Because of the short-circuit proof design and high output current of the T 99/1, this is device is also suitable for cable fault location (in conjunction with a TDR unit).

• Phase identification at all voltage levels in real time
• GPS connection and GPS cache (1 h buffer)
• Measurement on LV, HV and capacitive test points
• Easy to operate via touch display
• Eliminates safety hazards
• Fast and precise phase identification saves time and money

Whether you are restructuring a network, planning new network systems or performing switching operations, precise phase identification is essential for the safe and reliable operation of a network.

The PVS 100i assists you in checking the phase quickly and precisely. It helps you to avoid faulty switching, eliminates safety risks, reduces operation expenses, prevents a one-sided load of the network and improves the service.

• Foil keyboard with LEDs for selecting the pulse width
• Impulse couplers 42 and 64 mm
• 24 hours of operation with one battery charge
• Evaluation identical to the OWTS pre-location
• Cable identification option

The PD LOC system solves the problem of pinpointing for mixed cables (XLPE / PILC) and for PD in joints of single core cables. The exact location of the joints in the field is generally not known, and these joints cannot be localized using audio frequency methods.

The system has an impulse transmitter that uses a inductive coupler to inject a signal into the cable.

The receiving and evaluating unit consists of an input amplifier for processing the signal and a control unit. The visualization of the distance system's transmitter location is performed by using a TDR T30-E PD reflectometer in a separate menu, by means of an additional PD software function.

• Suitable for DAC, VLF CR and VLF Sinusoidal power sources up to 60 kV rms
• Real-time data evaluation and display of results, no post processing needed
• General and localised phase resolved PD pattern (PRPD) display for defect type recognition

Network operators can now get faster and significantly more reliable information about the quality and the condition of their cables thanks to the PDS 60-v2 PD detector. For the first time ever you can immediately locate faults in underground cables during the actual PD measurement. 

• Partial discharge diagnostics with VLF sinusoidal voltage up to 62kVpeak
• With 14.5 kg – the lightest PD measuring unit on the market
• Real-time data evaluation and display of results, no post processing needed
• General and localized Phase Resolved PD pattern (PRPD) display for defect type recognition

Network operators can now get faster and significantly more reliable information about the quality and the condition of their cables. This thanks to the brand-new PDS 62-SIN PD detector. For the first time, it has become possible to immediately locate faults in underground cables during the actual PD measurement. The PDS 62-SIN has been designed for all Megger VLF Sinusoidal testers up to 62kVpeak.

• Compact and transportable; permits use on difficult to reach switchgear and substations
• High testable capacity of 8 μF allowing testing of long cables
• State of the art PD measurement technology: live evaluation, localization and display of results
• Available in 200 kV and 300 kV model; other voltage levels on request

The HV DAC series is designed for after-laying testing on newly installed HV-cables as part of quality control, and for condition assessment on repaired or service-aged HV-cables.

The key benefit of this test set is the compactness versus testable capacity. With this transportable unit, cables with a length up to 32 km can be tested. In addition set-up within a substation is also no problem; no more roadblocks needed compared to using resonance test sets on large trucks.

As of its portability and short set-up time it is possible to quickly respond on changing weather conditions. Because of its low weight there are no special requirements needed for road conditions. Air transport is also no problem, keeping transport times to a minimum and maximising the efficiency in use of the system.

The test set incorporates a partial discharge (PD) detector, allowing monitoring the quality of workmanship and the condition of the cable. The PD measurement system is state of the art with live evaluation, localization and display of results. Maintenance activities can be directly planned during the actual measurement. All data is stored in a powerful cable data base, where data can be easily accessed again, and reports printed.

• Two proven voltage wave shapes in one device
• Standard compliant VLF cable testing with accompanying PD diagnosis
• Non-destructive PD diagnosis by means of proven DAC voltage
• 50 Hz Slope Technology for a direct comparison with the power frequency

Network operators can now get faster and significantly more reliable information about the quality and the condition of their cables. This is made possible thanks to the brand-new 50 Hz Slope Technology. For the first time, it has become possible to immediately locate faults in underground cables during the actual PD measurement.

With the 50 Hz Slope Technology for the first time, a withstand test with VLF cosine-rectangular voltage (VLF CR) and PD diagnosis with damped alternating voltage (DAC) is combined in one unit. This allows an efficient and integrated solution for precise inventory of the network infrastructure. The important fact here is that the PD measurement data, gained with the VLF CR or with the DAC test voltage, can be compared directly with the 50 / 60 Hz network voltage. This facilitates reliable decision making.

• Cable testing, cable diagnosis and sheath testing in one device
• Enables standard compliant high power VLF testing at 0.1 Hz (5 µF @ 40 kVrms)
• Internal tanDelta measurement with automatic result interpretation
• Partial discharge diagnosis using VLF Sine wave, Damped AC or 50/60 Hz Slope technology voltages

TDM 45 series is a revolutionary breakthrough in testing and diagnosis of MV cables. The patented concept addresses the utilities increasing need for flexibility in use of test and measuring equipment based on the type of application.

The modular concept allows the engineer to individually set-up the unit based on the type of job that needs to be executed. If e.g. withstand testing on short cable lengths need to be performed then only one module is needed. When part of the task is also to perform a partial discharge diagnosis then an additional module is needed.

• Peak damped AC (DAC) voltage of 30 kV
• Fully enclosed partial discharge (PD) detector eliminates operator exposure to HV potential
• Real-time detection and mapping of PD
• Performs testing to IEEE 400.4 standards
• Two module design for easy handling and transport

The MV DAC30 is a 30 kV Damped AC (DAC) cable test set with Partial Discharge (PD) diagnostic capabilities. It can be used detect and map PD activities in real-time for immediate evaluation of test results.

It is the first system in the world to integrate both the power source and PD coupler into a single portable unit. This revolutionary design eliminates operator and environmental exposure to high-voltage potential, ensuring the highest level of electrical safety. The system separates into two modules, each weighing less than 77 lbs, for easy handling and transportation.

• Voltage detectors
• Seven models
• Continuous monitoring
• IEC conformance
• Phasing testers
• Grounded or ungrounded ac system check
• Five models

For use on any grounded electrical system, DETEX Voltage Detectors are available in seven models that cover a range from distribution class to transmission line voltages up to 550 kV. Biddle offers six electronic ''beeper'' models and one model with LED indication for greater visibility when testing indoors.

The beeper-style electronic detectors provide audible and visual indication of the presence of phase-to-ground ac voltages, in accordance with ANSI C84.1-1982 standards.

The 6.9-kV model is equipped with a telescopic pole. All other models are fitted for universal spline mounting on a hot line pole rated for the voltage of the system being tested.

Electronic voltage detectors for use on distribution line voltages (Cat. No. 514360 series) provide a single red LED.

Detectors rated for transmission line voltages (Cat. No. 514242 series) provide four LEDs for improved visibility at greater distances.

The LED-indicating voltage detector is designed for indoor testing of grounded ac systems. A bright LED indicator provides easy visibility in poor lighting conditions. During testing, the presence of voltages within the detector's operating range will illuminate the bright LED lamp.

A built-in piezoelectric voltage source provides a test feature to ensure that the detector is operative before use. The self-test is activated by a pushbutton.

The LED detector is equipped with a 48-in. (1219-mm) telescopic pole calibrated and marked for voltages within the ratings of the detector. These demarcations assist the user in adjusting the pole to the length required for safe operation. The pole retracts to 34 in. (864 mm) for convenient storage in a vinyl carrying case when not in use.

• Permits a PD-free connection to the cable
• Variety of adapters which covers most commonly used terminations
• Simplifies the calibration procedure by additional cable lugs
• Comes in a convenient, sturdy case

The diagnostic connection set is a kit which can be used for diagnostic measurements such as offline PD measurements or tanDelta measurements. With help from this set, the user is able to make a PD free/ low connection to the test object. Thus, the measurements results will not be influenced by the connection to the test object anymore. This simplfies the evaluation of the PD measurements and minimises faulty readings with tanDelta measurements caused by corona.

All the adapters enable the calibration equipment to be connected directly to the adapter used. Moreover the kit can also be used for other applications/ equipment like connecting VLF systems or the tanDelta attachment.

• Easy connection for various conditions PD-free connection for partial discharge
• diagnosis using the single phase SF6 test adapter (TE PA-MC12/16)
• Including silicone grease for a perfect testing pre-arrangement

The VLF-connection set ensures that the VLF measuring equipment is properly attached to the device under test through a safe and tight connection. The VLF-connection set consists of either a 3-phase pliers adapter or a 3-phase SF6 adapter.

While the pliers adapter can be used for many testing arrangements, the SF6 adapter is especially useful for connecting the measuring cable to elbow connectors. Furthermore the SF6 adapter can be supplied in two different sizes (M12 and M16) for the exible adoption to different elbow connectors.

Moreover all single phase adapters are suitable for establishing a PD-free connection during Partial Discharge diagnosis.

• Split-core and permanent HFCT’s available
• Can be used for HF, VHF and UHF application
• Easy to install

The Megger High Frequency Current Transformers (HFCT) are designed for decoupling of PD signals and can be used for multiple applications in MV, HV and EHV range. The HFCT sensors are attached around the cable / accessories earth connection e.g. a cable earth screen.

Megger offers permanent as well as split-core HFCT sensors. Permanent HFCT sensors are ideal for those assets were per­manent monitoring is required or were getting outages are almost impossible. Having pre-installed HFCT sensors in this case will allow online PD monitoring without the need of an outage. The split-core HFCT’s are ideal for spot testing where there is direct access to the earth screen. The split-core HFCT’s can also be used inside switchgear cabinets, but then in most cases, as of safety reasons, an outage is required.

• Adjustable current limiter
• Easy and powerful testing of cable jackets
• Pulsed output voltage for sheath fault pinpointing
• Burning of cable faults

The sheath test system MMG 10 is used for the voltage testing of plastic insulated cable jackets. The test evaluated the leakage current in respect to the cable lengths. An adjustable current limiter avoids an eventual drying or unintended change of a fault spot.

The high output current can also be used for the low resistive burning of a fault. For pinpointing of sheath faults in plastic insulated shielded cables and earth faults in unshielded cables, the MMG 10 provides a pulsed output voltage. The pinpointing is done by the step voltage method with the Earth fault locator ESG 80-2 / ESG NT.

• Surge generator for 4 kV, 8 kV and 16 kV and output up to 500 J
• Optimized surge energy for switchable capacitors

The Surge Wave Generator SWG 500 operates in the middle voltage range of the usual SWGs. While its surge energy is in the lower range, the three voltage ranges are switchable, which allows each voltage stage to use the full surge energy of 500 Joules.

Together with reflectometers, surge generators are the central component of cable fault location. They are used for both pre-location and also pinpoint location.

• Surge generator for 3 kV, 4 kV and 5 kV and output up to 500 J
• Optimized surge energy for switchable capacitors

The smallest, lightest and least expensive Surge Wave Generator, the SWG 505 in situations where flexibility, portability and price-to-performance ratio are more important than getting the highest voltage or surge energy. 

Together with reflectometers, surge generators are the central component of cable fault location. They are used for both pre-location and also pinpoint location.

• High surge energy up to 3500 J
• Fast surge rate
• Voltages between 2 and 32 kV

Surge wave generators are, like reflectometers, an essential component of the cable fault location process. They are used for both prelocation and pinpointing.

The surge wave generator SWG 1750 is a modular, variable solution available in multiple configurations. Due to its size and power, the SWG 1750 is primarily installed in fault locations systems.

SWG 1750 C with 8 – 16 – 32 kV / 1750 J

SWG 1750 CI with 8 – 16 – 32 kV / 1750 J, incl. leakage current measurement

SWG 1750 C-4 with 2 – 4 kV / 1150 J and 8 – 16 – 32 kV / 1750 J

SWG 1750 CD with 8 – 16 – 32 kV / 3500 J

• True portable outdoor-ready unit, IP 43
• Very easy to use “turn&click” single  rotary knob interface
• Surge/Thump energy 2,000 Joule
• DC testing up to 40 kV, surging/thumping  up to 32 kV, burning up to 40 kV
• Prelocation methods: Inductive ARM with Multishot, ICE and DECAY
• Built-in safety circuits for earth connection monitoring (F-Ohm) and touch potential monitoring (F-Voltage)
• Full TDR control of all HV functions

The STX40 is the most powerful and most modern port-able fault location system in the market. It is ideally suited for proof testing, analysing, prelocating and pinpointing of faults on extruded low voltage and medium voltage XLPE- and EPR-insulated cables. With its 40 kV DC source and a potent high frequency burner it is also highly capable and effective on PILC cables as well.

The STX40 is fully automated with motorised HV switches controlled by either the rotary knob or the industry-grade colour touchscreen.

• ICEplus for the easy and reliable fault prelocation without interference from branches
• High surge energy for pinpointing
• Compact and lightweight construction
• Testing up to 5 kV
• Automatic detection of the breakdown voltage
• Pinpointing with the integrated surge generator 0 … 2 / 4 kV 1000 J
• Pulsed DC for sheath fault pinpointing

The SPG 5-1000 is a portable multi functional system for cable testing, fault conditioning pre- and pinpoint location of faults in low voltage distribution systems.

Using the patented ICEplus pre-location method the operator has an very easy to use tool for prelocation of faults, especially in branched low voltage distribution systems. The evaluation of a reflection measurement is not required. The fault distance is directly displayed as numerical value. The branches have no influence on the measurement.

The unit is controlled by the integrated rotary encoder and a graphic LCD for the visualisation of modes and adjusted parameters. The system supports easy handling, supports successful operation even for untrained users, and provides maximum technical safety.

• Real-time monitoring and analysis of current and voltage progression
• Early warning of impending grid overload
• Automatic restoration of power supply
• Minimised downtimes
• Cable fault location with households connected
• Modular multipolar design

Is it possible to know in advance when a power failure will happen?

Can you reduce outage times to a minimum?

And: can you locate cable faults at all without disconnecting the consumer from the mains?

YES, Megger can. And so can you – with SmartFuse250 (SFC250).

SFC250, a multifunctional electronic circuit-breaker system for load currents up to 250 A is Megger’s solution for low voltage power grids.

The SFC250 circuit-breaker system:

• replaces conventional HRC standard fuses and is compatible with NH02 and NH03 fuse holders
• offers the maximum flexibility through modular multipolar design
• monitors the current and voltage progression in real time, continuously records the data and reports events via the mobile phone network (GSM, 3G), WiFi or LAN to the user
• sends the user an early warning if grid overload is threatened
• can be configured to automatically restore the power
• can locate cable faults without the need to disconnect consumers from the mains

• Delivers 1600 J at 12.5/25 kV
• 30-kV DC high voltage proof/burn and displays insulation resistance
• E-Tray automatic test sequence to proof test, prelocate and pinpoint
• ARC reflection MV cable prelocation
• ICE MV cable prelocation
• Multi-shot technology for ARM*
• Earth gradient LV fault locating and sheath fault locating
• Interprets test results for user
• 7.0 in HiBrite color display
• IP53 rating for wet environments
• Safety/grounding check
• USB interface

The SMART THUMP ST25-30 Portable Cable Fault Locating System provides safe, efficient and extremely easy-to-use solutions for quickly identifying, prelocating and pinpointing various types of cable faults for power cables. The ST25-30 is developed to meet the requirements for typical medium-voltage distribution cable fault location markets from 11 to 35 kV system voltage.

• Delivers 1500 J at 8/16 kV
• 20-kV DC high voltage proof/burn and displays insulation resistance
• E-Tray automatic test sequence to proof test, prelocate and pinpoint
• ARC reflection MV cable prelocation
• ICE MV cable prelocation
• Multi-shot technology for ARM
• Earth gradient LV fault locating and sheath fault locating
• Interprets test results for user
• 7.0 in. HiBrite color display
• IP53 rating for wet environments
• Safety / grounding check
• USB interface

The SMART THUMP ST16-20 Portable/Vehicle-mounted Cable Fault Locating System provides safe, efficient and extremely easy-to-use solutions for quickly identifying, prelocating and pinpointing various types of cable faults for power cables. The ST16-20 is developed to meet the requirements for typical medium-voltage distribution cable fault location markets from 11 to 35 kV system voltage.

Typical end users include: operations department of power utility companies, electrical departments within municipalities, private network operators, high voltage electrical contractors, service companies, port authorities, mining, airports, military bases, petrochemical and paper companies.

The ST16-20 unit incorporates the “E-Tray” technology, a concept that has been already proven in other products (EZ-Thump, EZ-Restore Overdrive, and TDR T3090) and which has been carried forward into new Megger products.