Amvac tm vacuum circuit breaker with magnetic actuator mechanism.
A am mv va ac c universal applications: • medium voltage motor starting applications • capacitor switching • retrofit applications to replace existing circuit breakers in repetitive duty applications • mining applications where high reliability and resistance to dust and humidity are critical amvac ...
3 amvac. The circuit breaker. Although many refinements have been made throughout the 80-90 year history of the medium voltage circuit breaker, there have been only four generations of circuit breaker design. Early circuit breakers were spring charged units with separate close and trip springs. Thes...
4 a am mv va ac c summary of benefits: • simple mechanical operation • fewer than 10 moving parts • manual opening capability • capable of open-close-open after loss of control power • high reliability emergency manual breaking mechanism electronic controller magnetic actuator electrical energy stor...
5 amvac. Qualities that convince. Maintenance free vacuum interrupter and current carrying parts in one embedded assembly. 5 kv 15 kv 27 kv innovation extends to the vacuum interrupter assembly, as well. For the first time in any vacuum circuit breaker, the interrupter and the current carrying parts...
6 amvac. Low maintenance permanent magnet technology. Instantaneous representation of magnetic flux density distribution magnetic latching in a limit position. Magnetic latching plus current build up in one coil. Armature reaching the opposite limit position. Following the advance of vacuum interrup...
7 the electronic controller uses robust components and circuit board con- forming coatings to prolong the life of the device. The electronic con- troller will operate on ac or dc control power because it utilizes an ac to dc converter internally. Instead of selecting from a long list of con- trol po...
Amvac. Technical data. Breaker nominal rated rated short short close and impulse type voltage voltage circuit time latch level class kv current ka current ka peak (bil) kv sym. (k=1) (2 secs.) crest 5amv25 5 4.76 25.0 25.0 65 60 5amv31 5 4.76 31.5 31.5 82 60 5amv40 5 4.76 40.0 40.0 104 60 15amv25 15...
Amvac. The modern circuit breaker. 1. Upper primary terminal 2. Vacuum interrupter 3. Epoxy potting compound 4. Lower primary terminal 5. Flexible connector 6. Wipe springs 7. Insulated pushrod 8. Jackshaft 9. Stroke adjustment 10. Position sensors 11. Close coil 12. Permanent magnets 13. Armature 1...
10 general the circuit breaker shall be an abb amvac or approved equal, three-pole, drawout (or stationary) type, electrically operated with stored energy magnetic actuator operating mechanism. The circuit breaker is intended for use as a general purpose device in accordance with the latest revision...
11 on drawout circuit breakers, a self-aligning, fully automatic secondary coupling system shall be used to connect and disconnect all control wiring during circuit breaker insertion and withdrawal. The secondary disconnect shall require no manual intervention to attain proper position when the brea...
Tg-ibam-01 april 2002 rev a abb inc. 655 century point lake mary, fl 32746 u.S.A. For sales & marketing contact your local representative or: tel: +1-407-732-2000 1-800-929-7947 fax: +1-407-732-2161 www.Abb.Com/mediumvoltage.
