We develop protection studies for autotransformers, reactors, step-down and step-up transformers, involving complete primary and secondary protection for all types of faults. For concessionaires, industries and the national interconnected system.



- We specialize in the following protection relays for Transformers and Reactors:

the ABB®: RET615, RET620 and RET630;

the Beckwith Electric®: M-3311A;

o General Electric®: Multilin T60, 845, 345, T35. MiCOM P642/3/5 Agile, P50 Agile P652;

o Pextron®: UCPT 3, PCPT 3/7/4 (Dry transformer) and URPE 7104;

the Schneider Electric®: Easergy MiCOM P63x and P64x;

the Schweitzer Engineering®: SEL-487E, SEL-787, SEL-387E, and SEL-387A;

o Siemens®: SIPROTEC® 4: 7UT613, 7UT63 and 7UT612. SIPROTEC® 5: 7UT82/85/86/87



In the development of studies, we adopted the most current technical standards and regulations of the electricity sector, involving:



- National System Operator (ONS) – RE 3/200/2012 – PHILOSOPHIES OF PROTECTION OF TRANSFORMERS AND AUTOTRANSFORMERS OF THE ONS OPERATION NETWORK.

- IEEE Guide for Protecting Power Transformers,` IEEE Std C37.91-2021 (Revision of IEEE Std C37.91-2008).

- IEEE Guide for Liquid-Immersed Transformers Through-Fault-Current Duration,` IEEE Std C57.109-2018.

[+] Electric Motor Protection

We develop protection studies for motors covering all types of faults for use in installations on an industrial and commercial scale.



We specialize in the following motor protection relays:



the ABB®: REM601, REM611 and REM615;

o General Electric®: MiCOM P241/2/3 Agile, P40 Agile P24xM, P50 Agile P253, Multilin M60/869/859/339/MM200/MM2/RMIO/RRTD;

o Pextron®: URP 6402, URPM 6302, PCPU 8, PCPM 6, NCPM 5 and PST;

the Schneider Electric®: MiCOM P22x and P24x;

the Schweitzer Engineering®: SEL-710-5, SEL-701, SEL-749M, and SEL-849;

o Siemens®: SIPROTEC® 4: 7SJ64/66/61/62/63. SIPROTEC® 5: 7SX800, 7SK82/85.