Product advantages and features:
·Strong short-term overload capacity, suitable for complex working conditions
·High short-circuit resistance and guaranteed safe operation
·Efficient electrostatic shielding ensures power quality
·Low noise and quietness, optimizing the on-site environment
High reliability, maintenance free, suitable for harsh scenarios.
1. Technical characteristics of excitation transformer:
·High electrical isolation performance: The insulation isolation strength of high and low voltage windings is high, effectively blocking harmonics and surge impacts in the main circuit of the generator, and protecting precision weak current components such as excitation thyristors and regulators;
·Strong impact resistance and short-circuit resistance: The winding is cast with epoxy resin as a whole, with a large margin for short-circuit dynamic and thermal stability, which can withstand short-term fault impact of the excitation system without damage;
·Low partial discharge, reliable insulation: vacuum casting process, extremely low partial discharge, long-term operation insulation does not age, suitable for continuous 24-hour operation of power plants;
·Harmonic Adaptation Design: Specially optimized winding structure for harmonic losses in the rectifier load of the excitation cabinet, ensuring smooth temperature rise control and avoiding harmonic overheating;
·High oil-free fire safety: dry pouring structure, no flammable insulating oil, can be arranged nearby in power plant rooms and buildings to reduce fire risks;
·Complete temperature control monitoring: equipped with winding temperature measuring components, can be connected to the central control system of the unit, real-time monitoring of winding temperature, and over temperature alarm protection;
·Low noise: The iron core design has low magnetic density, optimized magnetostrictive control, and low operating noise, making it suitable for the main control building of power plants;
2. Product features:
2.1 Design standards: GB, IEC
2.2 Capacity (MVA): 0.1 to 4
2.3 Voltage (KV): 0.1-35
2.4 Cooling method: AN/AF
2.5 Installation location: Generator plant, power station distribution room, indoor distribution area next to excitation cabinet, distribution room on the turbine floor
2.6 Application Scenarios: Hydroelectric power plant hydro generator sets, thermal power plant steam turbine generator sets, biomass/waste power plants, pumped storage units, small and medium-sized diesel synchronous generator sets, wind power synchronous phase-shifting machines, industrial self provided synchronous generators.
2.7 Insulation level: F/H level
2.8 Operating environment:
·Environmental temperature: maximum+40 ℃, minimum -35 ℃;
·Altitude: ≤ 1000m, customized insulation design can be strengthened for high-altitude power stations;
·Atmospheric conditions: no strong corrosive gases, no large amount of conductive dust, relative humidity ≤ 95% (no condensation at 25 ℃);
·Installation conditions: The computer room is well ventilated, away from water vapor and oil mist, and can be equipped with IP20/IP23 protective shell to prevent debris.
2.9 Types:
·According to insulation structure: epoxy resin cast dry-type excitation transformer, non encapsulated impregnated excitation transformer (large thermal power);
·According to the number of output phases: single-phase excitation transformer, three-phase excitation transformer;
·By unit type: excitation transformer for hydro generator, excitation transformer for steam turbine generator, excitation transformer for pumped storage unit, excitation transformer for biomass/diesel self provided generator;
·According to protection level: IP00 open type, IP20 closed type protection;
·According to load conditions: conventional excitation type, strong excitation special type (with enhanced short-term overload capacity).
