Circuit Breaker Analyzer System | TM1800
14Pages

Circuit Breaker Analyzer System Circuit Breaker Analyzer System functionality – one toolbox for all breaker testing modular concept testing – DualGround™, test circuit breakers with both sides grounded for off-line and on-line measurement TESTING WITH DUALGROUND The TM1800™ is the instrument platform for circuit breaker maintenance, based on decades of experience and thousands of delivered breaker analyzers. The modular construction makes it possible to configure the TM1800 for measurements on all known types of circuit breakers in operation on the world market. Electricity deregulation changes the business environment for utilities, switchgear owners and service companies. Deregulation has been shown to lead directly to increased emphasis on efficiency of operations, maintenance and service levels. Internationalization of business brings new challenges: substantial investments by global corporations will bring with them sharper or new requirements for increased emphasis on health, safety and environmental compliance. Experience has also shown demands for shorter time periods for testing, while the switchgear is less and less available to be taken out of service. The robust design contains powerful technology that streamlines circuit breaker testing. Sophisticated measurement modules enable great time savings as many parameters can be measured simultaneously, eliminating the need for new setup each time. The patented DualGround™ testing using the DCM module makes the testing safe and time saving by keeping the circuit breaker grounded on both sides throughout the test. The DCM module uses a measuring technology called Dynamic Capacitive Measurement. Timing M/R is using the patented Active Interference Suppression to obtain correct timing and accurate PIR (Pre-Insertion Resistor) values in high voltage substations. An adaptive, easy-to-use software suite supports activities from timing, simply turning a knob without the need for presetting, to advanced help functions for hooking up to the test object. A keyboard and 8” screen is the front end of the high-level user interface. The Select-Connect-Inspect workflow guides you to fast results in three steps. Testing is made easier to learn and perform. The system also offers full connection capability to the local network, printers etc. The safety aspect Network operators and service companies need to maintain and develop their industry safety record. Eminent International bodies including the IEEE® and IEC®, National Safety agencies and Trade Unions increases the demands on safety. During the deregulation applicable safety regulations have been clarified and the application of existing rules has tightened. Keeping a good safety record is becoming a crucial asset in attracting investors and customers. In all substations the capacitive coupling from live high voltage conductors induce harmful/lethal currents in all parallel conductors. Grounding both sides of the test object will lead the induced current to earth and provide a safe area for the test perso

TM1800Circuit Breaker Analyzer System Conventional vs. DualGround ■ Contact resistance ■ Timing ■ Motion ■ DRM ■ Vibration Both sides grounded The best way to provide safety in circuit breaker testing is to keep both sides of the circuit breaker grounded throughout the test. This will also make the test faster and easier. Minimum time shall be spent in the substation and focus shall be on the test rather than the equipment. The DualGround™ testing method is available for all tests on all circuit breakers. Equipment and methods that support DualGround™ testing are associated with the...

TM1800Circuit Breaker Analyzer System CONTROL MODULE Generates the selected circuit breaker operation sequences accurate and bounce-less. The Control module, with 9 analog channels (3 U + 6 I), also measures important parameters during the test. Coil current, control voltage, coil resistance and auxiliary contact timing are automatically measured for each phase without any additional test lead connections. Including 1 cable set, 5 m (16 ft) Optional accessories Standard cable sets are used as extension cables: GA-90002 ■ Three independent contact functions per module ■ Pre-programmed...

TM1800Circuit Breaker Analyzer System DIGITAL MODULE With digital transducers motion and other measurements become even more accurate, faster and easier. The Digital module enables use of incremental rotary or linear transducers, for measuring e.g. motion, velocity and damping characteristics of circuit breakers. ■ Six channels per module ■ Incremental transducers with RS422 connection ■ Up to ±32000 pulses resolution ■ Up to 20 kHz sampling Optional accessories Transducers Extension cable, 10 m (33 ft), GA-00888 See Accessories pages for more details. TIMING AUX MODULE Expands the TM1800...

Circuit Breaker Analyzer System a velocity or acceleration curve can be calculated in order to reveal even marginal changes that may have taken place in the breaker mechanics. Timing measurements Simultaneous measurements within a single phase are important in situations where a number of contacts are connected in series. Here, the breaker becomes a voltage divider when it opens a circuit. If the time differences are too great, the voltage becomes too high across one contact, and the tolerance for most types of breakers is less than 2 ms. Damping is an important parameter for the high...

Circuit Breaker Analyzer System Dynamic resistance measurement (DRM) ment is possible. The vibration data is stored together with available conventional data. A circuit breaker will have arcing contact wear by normal operation as well as when breaking short-circuit currents. If the arcing contact is too short or otherwise in bad condition, then the breaker soon becomes unreliable. Main contact surfaces can be deteriorated by arching, resulting in increased resistance, excessive heating and in worst-case explosion. The Vibration method is published in CIGRÉ and IEEE® papers. Since many years...