Showing results: 76 - 84 of 84 items found.
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TWA Advanced Series -
Amperis sl
The TWA advanced series instruments are designed for six-winding resistance measurement and simultaneous three phase on-load tap changer analysis of both the primary and the secondary transformer windings. This is performed with a one singlestep cable setup, with test currents of up to 40A. Each transformer configuration has a special measurement algorithm which is optimized for the fast stabilization of test results. The TWA instruments generate a true DC ripple-free current. Both the injection of the current and the discharge of energy from the magnetic circuit are automatically regulated.
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TWA Standard Series -
Amperis sl
The TWA standard series instruments are designed to measure the resistance of six coils and simultaneously analyze the three-phase tap changer on load of the primary and secondary transformer coils (provided by model TWA40). This is done in a single cable configuration, with test currents up to 40A. Each transformer configuration has a special measurement algorithm that is optimized for rapid stabilization of test results. The TWA instruments generate a true DC current without ripple. Both current injection and magnetic circuit energy discharge are automatically regulated.
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R.R.Transformers & Equipments
Relay testing equipment is a portable apparatus designed for checking the operating characteristics of protective relays on site. Rr Relay Testing Equipments are designed to facilitate routine test or periodic maintenance test of relays by simulating (as early as possible) fault conditions under which the protective relays are required to function. There are several approaches to the method of testing relays on site. The Relay Testing Equipments are secondary injection type and are intended to be used to test the relays after isolating them from live systems, either physically or electrically.
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IIB-3910-VXI -
Western Avionics Ltd.
The IIB-3910-VXI is message based intelligent interface card for dual redundant 3910 and 3838 applications. It gives full 3910 and 3838 test, simulation and bus analysis capability on the VXI bus, providing 3910, 3838 1553A, and 1553B variants in a single card. Each channel supports concurrent Bus Controller (BC) and up to 31 Remote Terminals (RT) with passive Bus Monitor, and an independent Chronological Bus Monitor (CBM). Full error injection capability is provided in BC and RT modes, with full error detection in BC, RT, BM and CBM modes. The unit provides dual redundant prEN3715 compatible 3910 interface, with variable amplitude dual redundant 3838 interfaces. External trigger-in and trigger-out are provided, with both Primary and secondary bus coupling for direct and stub bus, with access to internal 1553 bus, on the front panel.
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DEM60C -
IBEKO Power AB
After a DC current test, such as winding resistance measurement, the magnetic core of a power or instrument transformer may be magnetized (remnant magnetism). It can cause various problems such as wrong diagnostics, inaccurate measurements on a transformer, inrush current at the start-up of a power transformer, or incorrect operation of protective relays due to magnetized CT cores. The best way to eliminate this source of potential problems is to use demagnetizer on the power or instrument transformer.The DEM60C is a fully automatic test instrument which performs three-phase transformer demagnetization. Transformer magnetic core demagnetization requires the application of AC current with magnitude decreasing to zero. DEM60C provides this AC current by internally changing the polarity of a controlled DC current. During the demagnetization process, the instrument supplies the current at decreasing magnitude for each step, following a proprietary algorithm. It can demagnetize single-phase and three-phase power transformers.The instrument can be connected to all three phases of a power transformer to be demagnetized, on either the primary or the secondary side. If a user selects specific vector diagrams for different types of transformers, DEM60C will run a specific demagnetization procedure for each transformer type (i.e., single phase, delta, wye/star, zig-zag.) without switching the test leads.DEM60C enables safe and efficient power transformer demagnetization. The instrument automatically regulates the injection of current and discharging energy from the inductance. During and after the operation, an intrinsically safe discharge circuit with an indicator rapidly dissipates the stored magnetic energy. The discharging circuit is independent of the power supply, which improves its reliability in case of loss of power.Test currents of up to 60 A DC enable efficient demagnetization of even the largest power transformers. Using a DV Win software, it is possible to control DEM60C externally.
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EUROSMC, S.A.
Portable equipment to test all types of protective relays and power system protection schemes. Automatic relay testing software, Comtrade transient playback and test reporting.
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PW466i -
Ponovo Power Co., Ltd.
PW466i (6×20A, 6×150V) 6-phase relay tester is a powerful secondary injection protective relay testing kit with 6-currents and 6-voltages sources.
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Technology Products
Primary current injection kits are used to test and commission Circuit Breakers, Bus Bars, CTs, Relays, MCCs, PCCs etc. These are also used for high current injection and simultaneously measuring voltage drops and hot spots in bus-bar joints, Circuit Breaker Contacts etc.