Understand the Reasons Behind the Safety of TTA and PTTA Electrical Panels
Electrical switchboards, also known as electrical panels in some contexts, play a vital role in the control and management of electrical installations in industries and commercial establishments. Among their main functions are ensuring the safety of people, protecting property, and effectively supervising electrical operations. In this context, TTA (an acronym derived from the English "Type Tested Assembly") and PTTA switchboards stand out due to their particular characteristics.
The TTA electrical panel is composed of a series of assemblies designed based on standard electrical and mechanical norms. Its reliability is confirmed through rigorous testing performed individually on all components, such as busbars, inputs, outputs, feeders, and starting devices.
On the other hand, PTTA (Partially Type Tested Assembly) electrical panels are subjected to partial tests according to a specific list of requirements. However, short-circuit and temperature rise tests can be extrapolated through calculations based on similar assemblies.
TTA and PTTA Electrical Panels in Relation to Safety
The tests mentioned above are performed considering the worst-case scenarios to which the electrical panels will be subjected. The NBRIEC 60439-1 standard defines both TTA and PTTA electrical panels, establishing the mandatory tests that prototypes must undergo. These tests cover verification of temperature rise limits, analysis of electrical properties, evaluation of the maximum withstandable short-circuit current, and the effectiveness of protection systems. Furthermore, they include verification of insulation distances and insulation, as well as analysis of mechanical operation and the degree of protection.
Equipment Subjected to Extensive Testing
By choosing TTA and PTTA electrical panels, you are guaranteed to acquire equipment that has been extensively tested and designed with high-quality metal enclosures. This includes the structure, busbars, cables, and the specification of the feeder circuit breakers.
Overload and Overvoltage Tests
The purpose of the tests is to determine if the TTA and PTTA electrical panels are capable of withstanding the extreme conditions and loads for which they were designed. These devices are subjected to overloads and overvoltages to ensure that there is no damage to the electrical installation or risk to the safety of operators or nearby people, even in extreme situations.
In addition to type tests, TTA and PTTA electrical switchgear also undergo so-called routine tests, as defined by the NBR IEC 60439-1 standard. This includes inspection of the assembly (encompassing electrical installations and electrical operation), verification of conductor connections, and analysis of protection measures.
Protection that Prevents Losses
These tests ensure the integrity of other panels operating in close proximity to the TTA and PTTA switchboards. This is crucial because if an electrical panel cannot withstand the thermal and dynamic demands, it can deteriorate or even cause serious harm to nearby people and property.
By opting for a TTA or PTTA electrical panel, you are enhancing the protection of the electrical circuit components that depend on these panels, thus preventing an overload from causing irreparable damage and potentially paralyzing production, which can be devastating in a highly competitive market.
Furthermore, it's important to mention that CSW manufactures these types of panels. If you are interested in this content and would like more information about TTA and PTTA electrical panels, please do not hesitate to contact us. We are available to assist you and answer any questions you may have.
You can contact us through the following channels:
(19) 3296-2021
(19) 9.8354-0018