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Motion test with EGIL200
Learn how to set up the EGIL200 for testing a motion measurement. This application note includes transducer example for relative measurement with common mechanism, with both analogue and digital types.
Zveřejněno 15 června 2023
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Minimum pick up voltage test with EGIL200
Learn how to set up EGIL200 for test with minimum pick up voltage. The minimum pickup voltage test is made to check at what minimum voltage the circuit breaker operates.
Zveřejněno 15 června 2023
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MOM2 Test cables and output current
This application note informs about how to select a suitable test cable when doing tests with MOM2.
Zveřejněno 1 června 2023
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Contact resistance measurement of a circuit breaker with Mjölner 200-600, both sides grounded
This application note informs about how to perform a micro-ohmmeter test of breakers with both sides grounded. Valid for both Mjölner 200 and Mjölner 600
Zveřejněno 1 června 2023
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Micro-ohmmeter testing with MOM2 / DLRO-H200 and inductive loads
Testing on circuit breakers having a current transformer in the loop
Zveřejněno 19 května 2023
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Directional earth-fault protection - SVERKER 900
The fault current is set to 80mA tosimulatethe high current generated at the intermittent earth fault. The zero voltage is set to 20V;theconfiguration ismade in13 states.The fault states and the first two memory states are set to 20ms. The memory states havetimesselected togetthetrip as close to set time 1,2s as possible. In generator configuration,set U4gen to aux voltage DC.Set “Advanced mode” in SVERKER configuration.
Zveřejněno 28 dubna 2022
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Monitoring částečných výbojů pro včasnou diagnostiku elektrických zařízení
Monitoring částečných výbojů je zásadní pro bezpečný a spolehlivý provoz energetických zařízení, jako jsou transformátory, kabely, zapouzdřené rozvodny, generátory, motory a další elektrická zařízení. Aktivita částečných výbojů v čase může způsobit postupnou erozi izolačního materiálu, kdy náklady na odstranění následných nečekaných poruch mohou být fatální.
Zveřejněno 7 února 2022
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Measuring cable impedance with SVERKER900
This is an easy solution to measure the impedance values for cables, the values are used for calculation of compensation factor in distance protection.The compensation factor is first theoretically calculated and these values can now be compared with the measured values.
Zveřejněno 14 prosince 2020
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Preventive maintenance of rolling stock
The test and maintenance of electrical components on rolling stock is not an easy job to do. Some maintainers dismount some of the parts and bring them to a central location for revision and maintenance. This is a cumbersome and time consuming exercise. In many cases, the electrical parts are replaced only when they break down and are not subject to periodical testing. This of course holds a risk as some parts, e.g. circuit breakers, are crucial for safety reasons.
Zveřejněno 3 listopadu 2020
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TTRU3 Factory ratio testing of power transformer
Transformer equipment manufacturers (OEMs) have a critical need to measure true ratio, as they must confirm proper manufacture of their transformers during construction and final assembly. Improper construction has consequences of higher cost, late delivery, and poor quality. The ability of a ratio instrument to be used for all steps involved makes it a practical valueto OEMs because only one instrument is purchased and used throughout each stage. Only the most reliable and accurate instruments make it to the factory floor. Winding stack under constructionre used: Art Mandigo Winding Service.
Zveřejněno 3 srpna 2020
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