Deregulation changed the business environment for utilities, switchgear owners and their service companies. It has increased the emphasis on efficiency of operation, maintenance and service levels. Likewise the internationalisation of the business has brought new challenges by increasing the emphasis on health and safety and environmental compliance.
For testing circuit breaker contact resistance in compliance with IEC62271-100, specialist low resistance testers are used with a high output current. For this and other applications that require a higher test current, Megger offers an extensive range of testers that will fit your testing regime.
IEC62271-100 recommends that contact travel and speed are tested, as well as closing and opening times, resistance of the main contacts and synchronisation of the contact operation. As circuit breakers are electro mechanical devices, both the electrical and mechanical operation should be tested. It is essential that circuit breakers operate correctly when the protection systems detect a fault to avoid catastrophic failure. Megger offers a full suite of circuit breaker analysis tools to help ensure they do.
Megger has acquired the BALTO product line from STEVO Electric bvba (Belgium). The BALTO products, continually developed since their launch in 2003, are used to test the operation of DC high-speed electrical circuit breakers. The BALTO products extend Megger’s offering to the rail and metro industry, which is transitioning to more electrification, digital communication and control systems.
Primary injection testing requires the system to be taken out of service and consequently is usually conducted during commissioning. It does however test the complete system, the current transformer, conductors, connection points, relay protection and circuit breakers.
Distribution systems are protected by increasingly complex relays which require testing. Since the 1970s the Sverker series of relay testers has been class leaders, being small, light and simple to operate. Over the years more features have been added to enable the testing of more complex relays resulting in the variable phase shift and frequency features of the Sverker 780. Now new technology pushes the boundaries even further with the SMRT1, a revolutionary new concept in automatic relay testing, which makes high power complex testing available in a very small, extraordinarily light package.