Product categories

Vacuum interrupters

A vacuum interrupter is a switch which uses electrical contacts in a vacuum. It is the core component of medium-voltage and high-voltage circuit-breakers. Meidensha (Meiden) medium and high voltage vacuum interrupters feature high quality vacuum interrupter design, excellent electrical conductivity to minimize losses when the interrupter is closed and superb dielectric properties when the switch is open. Current interrupting capabilities and mechanical stability make Meidensha vacuum interrupters ideal for usage in vacuum circuit breakers, reclosers, disconnector switches, vacuum contactors, ring main units, load break switches and switchgear.

Surge arresters

Surge arresters are devices for protection of electrical equipment from over-voltage transients caused by atmospheric or internal switching events. Sometimes called a surge protection devices. They are designed to divert excessive voltages to ground and thus protect equipment in power transmission and distribution systems. Many types of surge arrestors are available in both polymer and ceramic housing and for AC and DC applications. Typically designed to cover voltages from 6.6 kV to 1000 kV arresters protect distribution transformers, power equipment, cables and power station equipment.

Vacuum capacitors

A vacuum variable capacitor uses a high vacuum as the dielectric instead of air or other insulating material. This allows for a higher voltage rating and/or capacitance value using a smaller total volume. In addition to the higher voltage rating a vacuum dielectric greatly reduces the chance of arcing between the plates. There are several different designs in vacuum variables, the most common geometry of the capacitor plates is usually inter-meshed concentric cylinders. The meshed cylinders are contained within a ceramic vacuum envelope, similar to an electron tube. Metal bellows are used to maintain vacuum seal while allowing positional control for the moving parts of the capacitor.

IP performance testing tools

Engaged in the field of Ethernet traffic measurements, generation and simulation for almost 20 years, Xtramus has positioned itself for innovation in IP performance testing. With leading edge engineering capability Xtramus Technologies have become a global test solution provider bringing excellence in design, support and service to clients worldwide. Xtramus provides complete Ethernet test solutions in accordance with standards ruled by IEEE, ITU-T and RFC. Solutions for traffic generation and analysis on Megabit, Gigabit and 10 Gigabit networks are available. Test systems for R&D, DVT and production testing of network switches, routers and gateways are available.

Network testing tools

Network IP traffic packet generators / analyzers are used for network performance testing under maximum or partial throughput conditions. Network health can be analyzed by network traffic measurement in a testbed network, using an IP network traffic generator such as "IP Traffic Test and Measure". The traffic generator sends packets, often with a unique packet identifier, making it possible to keep track of the packet delivery in the network. Impairment simulation (emulation) is sometimes required for testing of performance of real applications over a virtual network. Measurements usually focus on simulation of conditions like delay, jitter, latency, dropped packets and limited bandwidth.

Timing and navigation

We supply timing and navigation test equipment based on GNSS receivers from an USB port and a PPS timing output. There are currently over two billion GPS users worldwide. We support testing on GPS (American), Glonass (Russian), Galileo (EU) and Compass (Chinese) positioning systems. We are known for excellent performance in static and mobile applications and wide temperature range -40 C to + 85 C. When timing and navigation is used in combination with map data and other information (weather or traffic data, for instance) the result is the most popular and recognizable service--the modern navigation system better known as the Global Positioning System (GPS).