Archive - Electricity 2017 Archive - Electricity
TAM seat 3
Tests and measurements - Testing and Measurement
Thursday | 9.11.2017 | 9:00
TAM 3.1
Testing a low voltage photovoltaic device

Yosef Shahbari
Shahbari Engineering
Israel
Holds a BSc degree in Electrical Engineering.
Graduate of the Faculty of Electrical Engineering at the Technion 1988.
Since then he has been involved in the field of electricity. At first he was a construction engineer at a contracting company for electrical work, then he moved to an inspection office that offered supervision of electrical work and for nearly 20 years served as an electrical engineer inspecting facilities.
Summary
The lecture will discuss the test format of a photovoltaic system, which is connected to a low-voltage supply system.
The lecturer will present the main lessons from the experience of testing many systems and will discuss issues that require the series. In photovoltaic facilities there are no guidelines for electrical tests and each tester performs his tests differently and therefore:
The basic things that the examiner must check must be arranged and they must be recorded in his examination report.
There are problems that require the series, including determining whether or not to test their solution is the responsibility of the electrical tester.
The lecture will include two main parts:
Introducing the process of testing a photovoltaic facility including reference to panels, converters, cables, electrical panels, depreciation relays and the grounding method.
Problems encountered by the electricity tester in the field while testing a photovoltaic facility.
TAM 3.2
Main steps in testing a high voltage photovoltaic electrical installation

Aharon Eframov
Independent Test Engineer
Israel
Aharon Yaframov, electrical engineer, with a master's degree from 1993, with a "type 3 electrician's license".
Until 2015, he worked for the companies "Delekia", "Elco", "Belectric Israel" in a variety of positions as electrical engineer and project manager.
Since 2015 - independent electrical engineer. Main areas of practice: testing, consulting and supervision of the design and execution of electrical installations.
Summary
Medium-sized photovoltaic systems (with a capacity exceeding 50 kW), connected to the high-voltage power supply system, are complex systems whose testing is based mainly on IEC guidelines, IEC procedures, requirements of appropriate international standards and experience gained from testing systems. This.
The lecture will provide an overview of the main steps in examining the said systems:
Examining the facility plans and adapting the equipment to the relevant standards.
Checking the conformity of the PV facility with the requirements of standard IEC 60364-7-712 and the guidelines of the Director of Electricity at the Electricity Authority.
Separation test on the MN side.
Grounding quality test.
Testing transformers and their compliance with the 60076.IEC standard
Test cables mg according to IEC standard 60502-4
Checking the order of mg and mn in the main electrical room includes checking the conformity of the electrical room to the HHI guidelines for the construction of internal and external intercepts.
Examination of defenses in the main order MG.
Operation of the facility and electrical inspections of the station services.
Examination of the function of the defenses in coordination with the district inspectorate of HHI, including an examination of the function of the circuit breakers in remote control.
TAM 3.3
Complexity and professionalism Testing the electrical installation in the new era in the IEC

Lior Bercovitz
IEC
Israel
Director of the Consumer Technical Department in the Jerusalem District IEC, electrical engineer and type 3 tester.
Summary
Electricity is a basic and necessary commodity and serves as a basis for activity in the sectors of the economy and in every home in Israel. The IEC performs an inspection of the electrical installation before its first operation, after a fundamental change in the installation, in electrical cases and the like. The purpose of the tests is to verify the integrity of the facility and the safety of its user, to prevent a safety hazard, to provide reliable and regular electricity and to prevent interruptions to other customers who are fed from the network. Improper installation can be life threatening!
The IEC's facility inspectors perform inspections in accordance with the Electricity Law and its regulations, the IEC's rules and procedures, criteria, laws and other regulations that affect the electrical facilities. Well-being, technological advancement and the rapid pace of changes and developments in the field of electricity and its products have led to larger, more complex and sophisticated electrical facilities, requiring smarter facility inspectors, with a high sense of service, extensive knowledge and rapid learning ability. In the recent past most home and commercial electrical installations were relatively simple, however today houses are larger and more complex, forcing the tester to test more circuits with a wide variety of electrical equipment such as air conditioners, underfloor heating systems, saunas, hot tubs and even their swimming pools More complex regulations and rules. The public electricity installation, which in the past included a single number of finite circuits, has become large and complex, especially in tall buildings and high-rise buildings. These facilities contain many electrical systems, with a unique cost that requires a special and different inspection process subject to regulations and rules, such as elevators, alternative supply generator, water pressure boosting pumps, orientation lighting, electrical rooms, essential board, protection against electricity and so on. Smart homes with many electrical and command systems.
Recently thousands of houses and various electrical installations have become electricity producers using renewable energies and especially PV, the electrical installation has changed substantially, on the roofs of the houses were built mini-production stations, which combine DC electricity with AC electricity, have protection and synchronization systems that require different professional testing. High voltage connection tests in the absence of proper reference in the electrical regulations.
The use of accurate and sophisticated test equipment and instruments, the launch of advanced reporting systems and test protocols, the manner in which test records are maintained, all require an orderly and uniform doctrine for all examiners, stemming from staff work combined with many years of field experience.
The lesson from experience is the source of wisdom and wisdom is the ability to pass on the degree of wisdom stored between examiners, with the client at the forefront of our minds.
In the presentation I will review some of these processes.
