Originated in Germany, VEP-12 indoor medium-voltage embedded vacuum circuit breaker is the first complete series of medium-voltage embedded vacuum breaker around the globe jointly developed by R&D team under the leadership of senior vacuum breaker experts of China and Germany. To meet the demand of grid and industrial mine users for automatic operation and condition maintenance of the breaker, Xiamen Huadian has separately developed VEP motor-operated breaker and VEP intelligent breaker based on VEP medium-voltage vacuum breaker, which have been put into domestic and overseas market; they improve automatic level of the breaker and realize condition maintenance, thus largely reducing breaker maintenance workload for users and saving maintenance cost.
- VEP-12 circuit breaker is the third generation of indoor medium-voltage embedded vacuum circuit breaker with the most complete series of product specification in the world.
- Embedded pole of VEP-12 circuit breaker seals vacuum arc extinguish chamber of ultra low resistance and dominant electrical parts of primary circuit in epoxy resin, suitable for hostile work environment.
- Application of buffer layer in enclosed electrode pole of VEP-12 circuit breaker assures its operation reliability in all kinds of operation environment.
- Solid insulation of enclosed electrode pole of VEP-12 circuit breaker substitutes requirement of SF6 as external insulation to a certain extent, more environment friendly.
- Application of vacuum arc extinguish chamber of ultra low resistance in VEP-12 circuit breaker fundamentally satisfies the demand of high current VEP-12 for temperature rise and reduces the loss of electric energy.
- Adoption of modular spring actuating mechanism in VEP-12 circuit breaker renders high reliability and convenient maintenance.
- Remote control of motor-operated chassis vehicle through SCADA system of substation, automatic draw-in and draw-out of circuit breaker and unattended substation are realized in VEP-12 circuit breaker.
- VEP-12 circuit breaker is equipped with coil current sensor, available for online monitoring on wave form of closing and opening coil in circuit breaker.
- VEP-12 circuit breaker is equipped with motor circuit current sensor, available for online monitoring on wave form of circuit current of energy-stored motor and motor-operated chassis vehicle in circuit breaker.
- VEP-12 circuit breaker is equipped with operation circuit voltage sensor,available for online monitoring on operation voltage value of operation circuit in circuit breaker.
- VEP-12 circuit breaker is equipped with angular displacement sensor, available for online monitoring on position-time behavior of closing and opening circuit breaker.
- VEP-12 circuit breaker is equipped with spring tension sensor, available for online monitoring on spring tension property of closing circuit breaker.
VEP-12-M circuit breaker, based on superior motor-operated technology of chassis vehicle in circuit breaker developed by Xiamen Huadian, possesses such functions as mechanical overload protection, manual priority and extended function as door interlocking, which prominently improves transmission efficiency and service life of motor-operated chassis vehicle when assuring operation reliability.
VEP-12-I is based on VEP medium-voltage vacuum circuit breaker and sensor technology as well as products of brand new intelligent unit AP332. Integration of sensor and circuit breaker can realize online condition monitoring on coil current of closing and opening circuit breaker,closing spring tension property, closing and opening position-time curve, circuit current and voltage of energy-stored motor and motor of motor-operated chassis vehicle etc, thus laying foundation for condition maintenance of circuit breaker; with such functions as measurement, control, protection, communication and condition monitoring etc and supporting IEC61850 GOOSE and MMS communication protocol, AP332 is an ideal intelligent terminal product as intelligent medium-voltage switchgeart in smart substation.