600 A MICRO-OHMMETER WITH DUAL GROUND SAFETY
■ Specifically designed for measuring contact resistances in circuit breakers, disconnecting switches, bus-bar joints, and other such devices
■ Safer testing using the patented Dual Ground™ technology to test circuit breakers with both sides grounded
■ Fully automatic testing- microprocessor controlled
■ Wide measuring range and test currents
■ High powered and light
The MJÖLNER Series is designed to measure the resistance of circuit breaker contacts, bus-bar joints, contact elements in bus-bars and other high-current links. This product has been designed with safety, ease of use and versatility in mind. It can be used anywhere to measure a low resistance value with high accuracy. It conducts true DC ripple free current testing of bus bars, circuit breakers, fuses, etc.
12 KV INSULATION DIAGNOSTIC SYSTEM
■ Power factor test set
■ Automatic and manual operation
■ Accurate and repeatable measurement results with high noise suppression
■ Lightweight, rugged two-piece design
■ New built-in intelligent temperature correction (patent pending)
■ New automatic voltage dependence detection (patent pending)
DELTA4000 series is a fully automatic 12 kV insulation power factor / dissipation factor (tan delta) test set designed for condition assessment of electrical insulation in high voltage apparatus such as transformers, bushings, circuit breakers, cables, lightning arresters, and rotating machinery.
Two configurations make up the series:
■ DELTA4110 with external computer (not included) consists of the DELTA4100 control unit and DELTA4010 high-voltage unit
■ DELTA4310A touch display interface comes with onboard computer, PowerDB software and printer and allows connection to and control of MWA300, TTR300/310E, MTO300, MLR10 and some Megger insulation resistance instruments.
HAND-HELD TRANSFORMER TESTER
■ Tests turns ratio, phase displacement, excitation current, vector group, winding resistance and polarity
■ Fully automatic; fast; easy-to-use; handheld; robust; lightweight
■ Battery powered with power-saving and shutdown function
■ Alphanumeric keyboard
■ RS232 for data transfer and printing
■ Stores 200 test results and 100 user-defined transformer test settings
The latest TTR available from Megger is the TTR100-1, a handheld, robust, lightweight and battery operated instrument. This TTR will complement several existing Megger transformer test products and will offer functions, such as winding resistance and polarity. These functions, as well as the phase angle measurement function, can be switched off when not required.
With a turn ratio of 20,000:1, the TTR100-1 offers the highest turns ratio accuracy in the industry of 0.1%. The TTR100-1 features special software capabilities.
The TTR100-1 is used to perform final test and calibration of transformers in the manufacturing process, such as a QA or Test Department. Using the new TTR100-1 in this environment will improve the productivity of such QA testing, as well as efficiently collect and store large amounts of data, which can be uploaded to a PC spreadsheet, or database program.
MULTIFUNCTION TRANSFORMER AND SUBSTATION TEST SYSTEM
Replaces need for multiple test sets
■ Saves time by eliminating need for multiple instruments learning
■ User-friendly interface reduces training and testing time
■ Portable and compact system components for easy shipping
■ State of the art measurement methods for advanced diagnostic testing
TRAX application areas can be greatly expanded by the use of auxiliary instruments:
■ TDX120 – Accessory for tan delta /power factor up to 12 KV
■ TCX200 – High current accessory for primary injection testing up to 2000 A
■ TSX303 – Automated 3-phase switchbox for faster testing of power transformers
■ TSX300 – Manual switchbox for easier connection during power transformer testing
■ Line impedance kit – Kit for testing line impedance with TRAX
TRAX is not just another multi-functional test instrument, but rather many intelligent instruments built into one box. The software includes a number of apps, making it fast and easy to perform a large range of different tests. The hardware offers unmatched flexibility and the range of cables and accessories adds even more flexibility, making the TRAX an efficient and time saving system for any user in the world.
TRAX is a multi-functional solution for transformer testing. It also adds several common substation testing functionalities, and ultimately replaces numerous individual testing devices. Compared to conventional single-functionality instruments, TRAX saves time and is more cost effective.
TRAX applications range from power transformers, where it offers several unique and outstanding features, to instrument transformers, circuit breakers, and many other substation components.
Expands the range of capacitance and dissipation factor (power factor) test sets
Capable of tuning capacitances up to 1µF at 10 kV
Hand-crank tuning wheel
Core gap gauge that displays position of inductor core
Large wheels and handles for easy transport
The resonating inductor is an accessory for use with the semi-automatic 12 kV extended-range capacitance and dissipation factor test set, or the automated insulation power factor test set (DELTA series).
The resonating inductor is used to expand the capacitance range of these test sets and cannot be used with the standard 12 kV capacitance and dissipation factor test set.
The resonating inductor is connected in parallel with the internal power supply of the test set. A manual tuning wheel on the resonating inductor varies the inductance to tune the parallel circuit for minimum load current.
When used with the semi-automatic 12 kV extended-range capacitance and dissipation factor test set, or DELTA series, the resonating inductor will extend the short-time rating of the power supply from 200 mA to 4 A. This capacity is suitable for testing capacitance loads of up to 1 µF at 10 kV.
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