the main activities performed are indicated here under:
- Load Flow Study and Load Balance
- Short Circuit Study
- Harmonic Analysis Study
- Motors Starting Study
- Transient Stability Study
- Relay Coordination Study
- Grounding Grid Dimensioning
- Current Transformer Sizing
- Arc Flash Analysis
- CT and VT Verification
- Electrical procedures
- Technical specifications
- Conceptual design
- Data sheets
- Purchase requisitions
All studies are performed according to IEC, IEEE/ANSI Standards.
Setting of relay protections in accordance with relay coordination study, verification through voltage and/or current secondary injection together with tripping time record. For all protection a test form will be released with all the setting and test details.
The activities above described are at present performed for the following relay manufacturers: Vatech-Reyrolle, Beckwith, GE, ABB, Areva, SEL, CEE, Thythronic and Siemens. If proper documentation is supplied, it is possible to operate also on other relay protection manufacturers.
Together with the relay protection setting and testing further assistance is given concerning the electrical system to them related.
Current transformers and voltage transformers verification. Ratio test through primary injections, polarity check to determine primary and secondary correspondence, magnetizing curves with saturation voltage determination.
Loop check test for auxiliary circuit. Closing and opening test for LV, MV and HV circuit breaker with all the related interlocks. Testing for special logics as automatic transfer and emergency generator operation.
Transformers, motors and generators start up. With particular concern to generator start-up, conduction of all real electrical tests. Short circuit and voltage test for protection real trip as well as ground fault test for earth fault protection verification. Test procedure for synchronization alignment with both manual and automatic mode.