Over 20 years of experience in power sector! Technical expertise & refurbishing offered to hundreds of large power transformers and primary equipment of 110-750 kV! NOVA INDUSTRIAL S.A. was the official consultant of CNTEE Transelectrica, for the period 2015-2018, in the field of “Power Stations”, for the second consecutive time after the period 2011 – 2014! Our know-how, for your safety !


Equipment for on-line monitoring of high voltage circuit breakers

The NOVA EMCSIT – I equipment is intended for on-line monitoring of high voltage circuit breakers, providing on-line information about the operating parameters and the status of the monitored device, namely:

  • the technical condition of the circuit breaker,
  • closed / open operating status,
  • operating times,
  • non-simultaneity of operation between poles,
  • arc times,
  • contact speed,
  • reignition,
  • number of employees,
  • contact wear,
  • insulating fluid pressure,
  • ambient temperature,
  • operating state of the drive mechanism (motor current, operating times), etc.


– 13 analogic inputs:

  • 5 entries with sampling rate of 10 kS/s/ channel:1 x current through the trip coil;
  • 1 x the current through the trip coil ; 1/3 x phase current ;
  • 8 entries with sampling rate 1 kS/s/ channel: 1 x battery voltage ; 1/3 x insulation fluid pressure;
  • 1 x current through the drive motor; 1 x ambient temperature; 1 x internal temperature of the drive mechanism;
  • 1 x reserve entry.
    • improving information support for management, for real-time decision making;
    • achieving the detection of defects in their incipient phase and thus preventing serious damage to equipment and related material losses;
    • increasing the reliability and availability of the system, thus reducing the number and duration of accidental interruptions, so losses due to undelivered energy;
    • increasing the speed of intervention and the quality of services provided by maintenance teams, in case of incidents / damages;
    • increasing the safety of operating personnel;
    • increasing the efficiency of maintenance works: the costs necessary for inspections and technical revisions of equipment are reduced; costs for repairing or replacing defective equipment; the cost of assembly and commissioning works;
    • increasing the efficiency of maintenance technologies;
    • achieving long-term data acquisition, thus improving information about the characteristics and operating conditions of the equipment;
    • obtaining a history of the actual technical condition of the equipment at a better level than can be obtained using traditional diagnostic methods;
    • ensuring better protection of the environment.

– 10 digital inputs: 1 x ignition contact; 1 x trigger contact; 1 x CSA contact; 1 x auxiliary contact A (optional);

– 1 x auxiliary contact B (optional); 1 x trigger initiation contact (optional); 1 x trigger initiation contact (optional);

– 3 x reserve entry.

Digital resolution: maximum 100 µs. Number of bits / sample: 13 bits for analog channels with read at 10kS/s and 10 bits for analog channels with read at 1 kS/s.


– 4 contact relay NO (dry / without potential contact): 1 x alarm relay contacts low value of control switch actuator voltage; 1 x improper pressure alarm relay contacts isolation fluid (optional); 2 x relay contacts available.

IED COMMUNICATION / CLIENT ( port / protocol / connection / client): RS232/485 Asynchronous protocol / USB connection (convertor) local / laptop; Ethernet 10/100/1000 (TCP/UDP) / CAT5/CAT6 cable, fiber optic plus media converter) / IED, command room server or regional center; Wireless / IED, control room server (optional).

The equipment can be integrated in the SCADA system.

SOFTWARE: Specialized computer system NOVA EMCSIT – I.

The NOVA EMCSIT – I can be used independently or in an integrated on-line monitoring system of primary equipment in high voltage power stations – Smart Grids.

The NOVA EMCSIT – I equipment can be used for any type of circuit breaker in electric power installations (regardless of the construction type or the condition of the new / old circuit breaker in operation), it can be easily parameterized according to the specific characteristics of the monitored circuit breaker; can be easily developed / upgraded according to new technical requirements.

The use of NOVA EMCSIT – I equipment provides the necessary conditions for: