Electronic Specialties 191 Relay Buddy Pro Test Kit

Product Information

The following table outlines exactly what each part of the SVERKER650 is capable of. The following image includes reference codes which are also in the table below.

To achieve a high degree of automation in protection testing, you need both adaptable test templates for protection relays from different manufacturers and the possibility to flexibly combine individual test modules in test plans. Efficiency can be raised further by defining uniform standards for testing protection relays. Fully automated documentation of the test results is also a basic requirement as this involves considerable effort when performed manually. Our Protection Testing Library (PTL) and the OMICRON Control Center (OCC) allow you to use test procedures that are individually customized to suit your needs, which can be carried out almost fully automatically. Compared to manual protection testing, the testing effort can be reduced by up to 80 percent. Megger developed the first software-driven protective relay test system in 1984, and we continue to provide models ranging from computer-controlled (with comprehensive yet simple, built-in, touch screen user interfaces) to manually operated test sets in portable and laboratory styles for every relay testing need. Relay test solutions may be expensive propositions when software is charged separately but with Megger solutions, the software required to test most relays is included with the test set so you don’t incur additional expenses. It is planned that the work being carried out by this group will be coordinated with the existing IEC 60255- 1xx series functional standards that consider voltage, current, temperature, etc. inputs in analog form, plus binary inputs and outputs. Future editions of the existing functional standard, as well as the new one, will take into account the voltage, current, temperature, etc. inputs in analog form and digital form in accordance with IEC 61850, as well as binary inputs and outputs and IEC 61850 GOOSE messages. It is worth mentioning that the standards do not specifically detail commissioning or routine tests for protection functions. Nevertheless, several clauses can be applied to these tests and doing so will help to minimise the risk of misunderstandings about validation in the field compared with the performance declared by the relay manufacturer or requested by the user, as previously explained. Also, manufacturers of relay test equipment are expected to implement the definitions and test methodologies detailed in the standards, in relation to both commissioning and maintenance tests. A distinction can be made between the parameter-based approach for protection relay testing (currently the dominant approach), and the innovative system-based approach. Furthermore, a differentiation can be made between manual and automated execution.

Provides 20-220V DC in two ranges. Equipped with overload protection and separate from the other outputs. Used frequently to supply the object being tested. Provides 0-250A AC, 0-250V AC or 0-300V D, depending on the ouput being used. Setting are made using the main knob. The readings of current, voltage and other entities appear on the display. The start switch is used to turn the current source on and off. When time is being measured, this is done in synchronisation with the timer. when the relay isn't energized; thus, there is an extremely high impedance between the 2 terminals. Chair of IEC TC 38 and CENELEC TC 38 “Instrument transformers” and member of IECTC 38 WG 37 and WG 47.

Need to make a log of your results? No problem with the SVERKER780 - hook the relay tester up to your PC via the built-in serial connection to export your results into Excel documents or use Megger's SVERKER Win software (sold separately) to create fully customisable reports and log data in real-time. Megger SVERKER780 Feature/Benefit Breakdown Leitloff, Volker, Hao Chen, Dehui Chen, Andrea Bonetti, Lei Xu, and Ahmed Mohamed. “Standardisation Challenges for Digital Inputs and Outputs of Protection Functions in IEC 60255 Series”. In ResearchGate. Glasgow, UK, 2019. https://www.researchgate.net/publication/334050781_Standardisation_Challenges_for_Digital_Inputs_and_Outputs_of_Protection_Functions_in_IEC_60255_series About the authors COM terminal when the relay isn't energized; thus, there is almost 0Ω resistance between the 2 terminals.

Halfords Advanced Circuit Tester

While IEC 60255-1 and IEC 60255-26 are still under revision, the new IEC 60255-181 Standard for Frequency and ROCOF protection functions was published in February 2019. Moreover, the IEC 60255-181 standard has been adopted relatively recently (autumn 2019) as the European standard EN IEC 60255-181, to be used without modifications in 34 countries in Europe. Another example relates to the IEC 60255-181:2019 standard for frequency and frequency-related protection functions [2]. This standard specifies a particular frequency ramp, the formula for which can be found in normative annex A of IEC 60255-181. Testing frequency relays with a different frequency ramp may result in unexpected results, depending on the relay algorithms and, once again, this can lead to unnecessary discussions if the test result is declared as failed. Since no test engineer nor any end-user wants to have doubts about the protection relay’s behavior during commissioning, it is best to always use the same standardised frequency ramp. may be 320Ω, 900Ω, or any of the various resistances. This will come specified with each specific relay used, along with the OFF function turns of the current source, wherupon generation is interrupted. ON function turns on the current source in the generating state.

Made for use in both high voltage substations and industrial conditions, the SVERKER650 includes a built-in capacitor to provide phase shift when testing directional protective relays and also has built-in resistors to divide voltages as and when needed. Since the AC voltage source is separated from other outputs, it is set independently of the current source. The AC voltage source is intended primarily for the relay protection equipment's voltage inputShows time, current, voltage and other parameters. Also used to make settings (access setting mode by pressing MODE button)

correctly. If you read a very low resistance and very high resistance, the coil is either shorted or Specifications are valid at nominal input voltage and an ambient temperature of +25°C (77°F). Specifications are subject to change without notice. Environment place the probe leads of the multimeter on the 2 terminals of the relay's coil. It doesn't matter which probe is placed on whichAs a result, it is strongly recommended that relay manufacturers, relay test equipment manufacturers, and relay commissioning and maintenance engineers should be aware of functional standards and that endusers should be equally aware! End-users are expected to create user profiles which include acceptance criteria and requirements relating to their specific applications. However, when creating these profiles, the users will be guided by the information and definitions contained in the standards [1] and [2]. Additionally, users could adopt a subset of the standardised tests described in the IEC 60255-1xx series as the basis for formulating their acceptance tests. In fact, it is not uncommon to see factory acceptance tests directly referring to, or at least inspired by, IEC 60255-1xx series standards.